test: make embedded-postgres per-process so concurrent CI runs don't collide

A push to main and its version tag fire two CI runs for the same commit. Both ran
`go test ./...`, which starts embedded-postgres on a FIXED port (54329/54330) and
a shared data dir. -p 1 serialises packages WITHIN a run, not across two
concurrent runs — so when the two runs overlapped they collided on the port/data
dir and BOTH failed the Lint/Test job (no image built). Prior commits passed only
because their two runs happened not to overlap.

Derive the port and runtime/data dirs from the PID; share only CachePath so the
PG archive downloads once. Proven: two concurrent `go test` of the store package
now both pass. Unblocks the v0.21.0 (Pillar A) build.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.env.example

@@ -51,3 +51,26 @@ TAPIR_POLL_INTERVAL=
 # caption endpoint; after it expires the video is retried. 0 = always retry.
 # Go duration; default 1h.
 TAPIR_FETCH_BACKOFF=
+# Recency bound for AUTO summarization: in automatic mode only videos published
+# within this window of now are summarized; older ones are discovered + listed
+# but wait for a manual "Summarize" (so a back-catalogue doesn't self-inflict
+# 429s). An explicit request bypasses it. Go duration; default 168h (~7d).
+# 0 = no bound (summarize every unseen video).
+TAPIR_AUTO_SUMMARIZE_WINDOW=
+# Minimum interval between outbound caption fetches across the WHOLE process —
+# the shared per-egress-IP rate gate (ADR-014). Scheduler runners and the web
+# "Summarize" click-path serialise through it so they cannot collectively trip
+# 429s. Go duration; default 2s. 0 = unlimited (dev/tests).
+TAPIR_FETCH_RATE=
+
+# --- scheduled discovery (tapir serve, ADR-018) ---------------------------
+# When > 0, `serve` runs in-process discovery for ALL users on this cadence
+# (e.g. 2h): one runner pass per user per tick, run-once-on-startup then ticked.
+# Empty/0 = disabled (dev/tests never auto-fetch). SINGLE-REPLICA assumption —
+# >1 replica double-runs discovery. Go duration.
+TAPIR_DISCOVERY_INTERVAL=
+
+# --- invitations (tapir invite) -------------------------------------------
+# Public base URL used to build the invite link `tapir invite <email>` prints.
+# Default https://tapir.d-ma.be; no trailing slash needed.
+TAPIR_PUBLIC_URL=

CLAUDE.md

@@ -46,8 +46,9 @@ These caused real mistakes that were caught and corrected; the corrections are l
 (See `DECISIONS.md` for full rationale. Listed here so you don't propose them.)
 
 - **No Supabase** — reuse Dex / ESO+1Password / Postgres (ADR-002).
-- **No global cross-tenant video/transcript table** — per-user isolation (data-model). Dedup
-  across users is a Future C concern, not a Stage 0/1 default.
+- **No global cross-tenant *video* table** — videos stay per-user (data-model). Transcripts ARE
+  shared since ADR-021 (public caption content, keyed by `(provider, provider_video_id)`, non-RLS)
+  so re-analysis never re-fetches; the *videos* half of cross-tenant dedup stays a Future C concern.
 - **No audio-download + speech-to-text in the core path** — captions-first (ADR-007). STT is a
   deferred, bounded optional component.
 - **No public SaaS / sign-up / billing / Google OAuth verification at scale** — Future C,
@@ -60,8 +61,14 @@ These caused real mistakes that were caught and corrected; the corrections are l
   stores, and sinks are adapters. Adding a video provider or a sink = a new adapter implementing
   the interface, nothing in the engine changes. This is what keeps "standalone vs homelab" a
   wiring choice (ADR-003).
-- **BDD.** The `docs/use-cases/*.feature` files are the behavior spec. New behavior gets a
-  scenario; the use-case core is tested through fake adapters, not live YouTube/brain.
+- **BDD.** The `docs/use-cases/*.feature` files are the behavior spec (design records — there is
+  no godog runner). New behavior gets a scenario; the use-case core is tested through fake
+  adapters, not live YouTube/brain. A name-coverage gate (`test/acceptance/scenario_coverage_test.go`,
+  `TestScenarioCoverage`) keeps the two from drifting: every non-`@pending` scenario must be
+  mapped to an existing Go test in `scenarioCoverage`. When you add a scenario, either map it to
+  its covering test or tag it `@pending` in the `.feature` with a one-line reason. It checks the
+  *link*, not that the test exercises the scenario — that's the deliberate trade for not running
+  godog (see issue #5 / the BDD-runner decision).
 
 ## Skills (engineering discipline)
 
@@ -79,7 +86,7 @@ Skills live in the canonical library `mathias/skills` and are wired into this re
 
 ## Current build state (start here for the first task)
 
-The repo is **green and shipping** — last tag `v0.4.0`. `task check` passes (fmt, vet, lint,
+The repo is **green and shipping** — last tag `v0.15.0`. `task check` passes (fmt, vet, lint,
 `go test -p 1 ./...`). Go is `1.26.1` (see `go.mod`).
 
 - Clean Architecture core is implemented: `internal/domain` (entities), `internal/ports`
@@ -88,13 +95,19 @@ The repo is **green and shipping** — last tag `v0.4.0`. `task check` passes (f
   green against it.
 - Adapters present under `internal/adapters/`: `youtube` (captions-first `VideoSource`,
   timedtext/InnerTube acquisition per ADR-010), `summarizer` + `llm` (the copied AI router,
-  Primary→Fallback per ADR-004), `store` (Postgres, golang-migrate migrations 001–006),
+  now a resilient endpoint chain — local primary → local fallback → external worst-case,
+  parse-failure-aware, ADR-004 + ADR-022), `store` (Postgres, golang-migrate migrations 001–015),
   `secrets` (file-backed `SecretStore`). The brain HTTP sink (ADR-005) is the remaining
   optional sink.
 - Stage 1 is open (ADR-012): multi-user with **DB-enforced** isolation — Postgres RLS `FORCE`d
   on all user-owned tables (migration 003), two-user isolation test in
   `internal/adapters/store/rls_test.go`. Registration gate, per-user YouTube web connect, and
   account management (disconnect / delete, ADR-013) all shipped.
+- Transcript persistence (ADR-021, migration 015): transcripts are a **shared, non-RLS** store
+  keyed by `(provider, provider_video_id)` — the single exception to the isolation boundary
+  (`TestTranscriptsTableIsSharedNotRLS`). The engine reads stored transcripts before any caption
+  fetch (`usecase.resolveTranscript`), so re-analysis — re-summarize, paste-a-URL, onboarding
+  burst — never re-touches YouTube. Per-user summaries/videos stay RLS-scoped.
 - `cmd/tapir` subcommands: `list`, `show`, `auth` (interactive host-side OAuth), `run` (batch
   watch→summarize), `serve` (the HTMX+Templ web reader/writer under `internal/web`, a new
   transport over the unchanged engine/ports — ADR-003). `tapir env` prints config.

DECISIONS.md

@@ -29,7 +29,9 @@ Go's concurrency model fits the watcher/worker shape).
 
 ## ADR-002 — No Supabase; reuse existing Dex / ESO / Postgres conventions
 
-**Status:** Accepted (2026-06-02)
+**Status:** Accepted (2026-06-02). The "Tapir does not write to the shared identity provider"
+implication is **partially superseded by ADR-017** (invite flow writes Dex Password CRs); the
+no-Supabase / reuse-existing-primitives decision stands.
 
 **Context.** The draft proposed self-hosted Supabase for auth + RLS + secrets (Vault). The
 homelab already runs **Dex** (OIDC), **ESO + 1Password** (secrets), and a **postgres18**
@@ -292,7 +294,11 @@ explicit call, with isolation as the guardrail that keeps it safe.
 
 ## ADR-013 — Account deletion is Tapir-side only; the Dex identity is left intact
 
-**Status:** Accepted (2026-06-03)
+**Status:** Accepted (2026-06-03). The "Tapir never holds write access to the shared identity
+provider" rationale is **partially superseded by ADR-017** (the invite flow now *creates* Dex
+Password CRs). The deletion-behaviour decision itself — delete Tapir-side state, leave the Dex
+identity intact — still stands; ADR-017 only changes the create side, not delete. See ADR-017
+for the now-asymmetric posture (Tapir can create Dex accounts but still does not delete them).
 
 **Context.** Stage 1 (ADR-012) added account deletion. A registered user is two things: a
 `users` row (plus all their data, cascade-linked) in Tapir's Postgres, and a subject identity
@@ -308,7 +314,9 @@ deprovision the Dex identity. The maintainer chose (a).
 - All of that user's secrets in the SecretStore (the per-user YouTube refresh-token refs).
 
 The **Dex identity is deliberately left intact.** Tapir does not deprovision, disable, or
-modify the shared Dex directory.
+modify the shared Dex directory **on deletion**. (Note per ADR-017: Tapir *does* now create Dex
+Password CRs on invite — so the create and delete sides are deliberately asymmetric, and a
+deleted user's Dex Password CR persists. See ADR-017 consequences.)
 
 **Consequences.**
 - **Clean re-registration:** a deleted user who logs in again arrives as a Dex-authenticated
@@ -319,9 +327,13 @@ modify the shared Dex directory.
   the identity carries no Tapir content. **But if Tapir ever moves toward Future C (real
   external/public users), this is a GDPR-shaped gap** — a true "delete my account" there must
   also deprovision or anonymise the Dex identity, which is a new ADR and likely a Dex-admin
-  integration Tapir does not currently have.
-- **Blast radius stays small:** Tapir never holds write access to the shared identity provider,
-  consistent with the estate's blast-radius-minimisation posture (ADR-002, architecture review).
+  integration Tapir does not currently have. **ADR-017 widens this gap:** Tapir now *creates*
+  the Dex Password CR but does not delete it, so a deleted Tapir user leaves an orphaned Dex
+  local-password account. Tracked as a known gap in ADR-017.
+- **Blast radius:** ADR-013 originally claimed "Tapir never holds write access to the shared
+  identity provider." **ADR-017 changes this** — Tapir now holds scoped `create`+`get` on
+  `passwords.dex.coreos.com` in the `auth` namespace. The blast radius is no longer zero; it is
+  bounded by that RBAC. See ADR-017 for the security analysis.
 
 **Reversibility.** Adding Dex deprovisioning later is a superseding ADR; nothing about the
 current choice blocks it. Recorded now because "deletion is partial by design" is a deliberate
@@ -331,7 +343,11 @@ semantic that future-Tapir (and any compliance review) must know was chosen, not
 
 ## ADR-014 — Timedtext 429 handling: per-host backoff + honest in-flight UX, before any Whisper reconsideration
 
-**Status:** Accepted (2026-06-03)
+**Status:** Accepted (2026-06-03). **Partially implemented as of v0.6.0** — see the
+implementation note at the end; the shared per-egress-IP rate gate (decision item 2) may not be
+fully realised. Verify against `internal/runner` + the youtube adapter before treating as done.
+**ADR-018 (in-process scheduled discovery + auto-summarize) makes decision item 2 load-bearing
+and folds its confirm/finish into that build.**
 
 **Context.** ADR-010 acquires captions from the unauthenticated `timedtext` baseUrl. Live runs
 show that endpoint **rate-limits per source IP (HTTP 429) under volume** — many videos fetched
@@ -386,6 +402,22 @@ clean data then tells you whether Whisper is warranted.
 dedicated egress IP / outbound proxy is worth it; CronJob-driven `tapir run` interaction with
 the rate gate (the batch path moves into k3s per the deferred CronJob item).
 
+**Implementation note (2026-06-03, v0.6.0 — added during reconciliation).** A v0.6.0 release
+shipped 429 handling: `domain.SourceRateLimited` (429 no longer collapsed to `SourceNone`),
+youtube adapter maps 429 → `SourceRateLimited`, **migration 007 added `videos.transcript_status`
++ `videos.rate_limited_at`** (durable per-video retry state), `TAPIR_FETCH_BACKOFF` config,
+runner records rate-limited + skips within the backoff window, and a "⏳ Retrying later" badge.
+This realises decision items 1, 3, and 4 well. **Item 2 (a single shared per-egress-IP rate
+gate) appears to be realised as per-*video* backoff state, NOT a process-wide IP gate** —
+multiple videos can still each hit the endpoint and collectively trip the per-IP 429. Treat item
+2 as **not yet confirmed done**; verify in `internal/runner`/youtube adapter and, if absent, it
+remains open. (Resolved during reconciliation: the v0.6.0 report's reference to "migration 008
+videos.rate_limited_at" was a **mislabel** — both columns shipped in migration **007**, not a
+missing 008. No migration was lost; the sequence legitimately skips 008. `rate_limited_at`
+exists and the runner's column reads are sound.) **ADR-018 makes item 2 a hard requirement:
+in-process scheduled discovery + auto-summarize drives all users' fetches through one pod egress,
+so the process-wide gate is confirmed/built as part of that slice.**
+
 ---
 
 ## ADR-015 — Per-user credentials: envelope-encrypted in PG18, not vault-stored
@@ -448,7 +480,8 @@ decision doc (`infra/docs/superpowers/handoffs/`). Build + reboot-validation: in
 
 **Status:** Accepted (2026-06-03). Revises the Stage 0 definition in VISION.md (supersedes the
 original "useful to me, specifically" gate and folds in the old Stage 1 "a trusted user returns"
-test).
+test). **The clock-start is further revised by ADR-018** (starts when scheduled discovery ships,
+since unprompted use was not possible before then).
 
 **Context.** The original Stage 0 gate was "the maintainer reads summaries weekly for four weeks
 and acts on one." The maintainer chose to change it to include friendly users, reasoning that
@@ -481,7 +514,7 @@ evidence the gate passed — use-evidence remains open.
   near-identical to the new test); hardening renumbered to Stage 1.
 - New drift signal added: declaring the gate passed on polite feedback rather than return-usage.
 - The 2026-07-01 check-in now asks "is anyone (me or a friend) coming back unprompted?", not
-  "am I using it weekly?".
+  "am I using it weekly?". (Check-in date itself revised by ADR-018.)
 
 **Reversibility.** A superseding ADR could tighten it back to maintainer-only or raise it to
 require multiple returning users. Recorded with the full rationale (including the self-scrutiny
@@ -489,6 +522,472 @@ about editing a gate while it's unmet) so the reasoning survives, not just the n
 
 ---
 
+## ADR-017 — Invite flow: Tapir creates Dex local-password accounts (write access to the shared identity provider)
+
+**Status:** ~~Accepted~~ **SUPERSEDED by [ADR-019](#adr-019--authentik-owns-invites-tapir-stops-provisioning-accounts) (2026-06-07).** The Dex local-password
+invite provisioning was removed when the homelab IdP migrated Dex→Authentik
+(infra ADR-0001); Authentik now owns invites. Original record below.
+
+Accepted (2026-06-03), **recorded retroactively during reconciliation, then
+deliberately ratified KEEP (2026-06-03).** This capability **shipped in v0.7.0 without an ADR** —
+code, RBAC, and a deployed ServiceAccount landed before any decision record existed. This ADR
+documents what shipped and honestly records that the decision-before-code discipline was not
+followed here (see "Process note"). **Partially supersedes ADR-002 and ADR-013** (the "Tapir
+holds no write access to the shared identity provider" posture).
+
+**Keep-or-reverse, decided (2026-06-03).** After the retroactive recording, the maintainer
+weighed keep vs. reverse (drop the RBAC + invite flow, rely on Google OIDC only). **Decision:
+KEEP.** Deciding fact: not all intended Future-B users have / will use Google accounts, so Google
+OIDC alone *cannot* onboard them — the invite flow is therefore **load-bearing, not a redundant
+convenience**, and reversing it would leave some intended users with no onboarding path. The
+trust-surface cost (scoped `create` on `passwords` in `auth`) is accepted deliberately in
+exchange. The opposing argument (this contradicts ADR-015's "no write credential to shared infra"
+logic, applied there to secrets) was considered and outweighed *only* because the capability is
+genuinely necessary for real users here — it is **not** a precedent for widening the surface
+further. **Explicitly NOT chosen:** adding `delete` to the RBAC to close the orphan gap (that
+widens the surface in the wrong direction; accept the orphan at Future B instead — see open
+items).
+
+**Context.** Stage 1 onboarding needs a way for a friend to get a login. Two paths shipped:
+Google OIDC via Dex (no Tapir code — Dex handles it), and an **invite flow** where Tapir itself
+provisions a Dex **local-password** account. The invite flow is what this ADR is about.
+
+**What shipped (reconstructed from `internal/adapters/dex/dex.go`, `internal/web/invite.go`,
+migration `009_invitations`).**
+1. `tapir invite <email>` (host CLI) writes an `invitations` row: a 32-byte crypto-random,
+   single-use, 7-day-expiry `token` (the token is the capability), `email`, `used_at`.
+   The `invitations` table is deliberately **not** RLS/`user_id`-scoped — the invitee has no
+   user yet and the token itself is the secret. (Sound; documented in the migration.)
+2. Recipient visits `/invite/{token}` (public, no session), sets a password (validated *before*
+   the token is consumed, so a typo doesn't burn it), the token is claimed exactly once.
+3. Tapir bcrypt-hashes (cost 12) and **POSTs a `passwords.dex.coreos.com` Custom Resource into
+   the `auth` namespace** via the in-cluster Kubernetes API, authenticating as the `tapir`
+   ServiceAccount. TLS validated against the mounted cluster CA. Off-cluster (dev) it returns
+   `ErrNotInCluster` and degrades without consuming the invite.
+4. RBAC applied this deploy: the `tapir` ServiceAccount has **`create`+`get` on
+   `passwords.dex.coreos.com` in the `auth` namespace** (and only that).
+5. Dex (kubernetes storage) then serves local-password login for that email; Tapir's
+   registration gate creates the profile on first login.
+
+**Decision (as ratified now).** Accept the invite flow as built: Tapir *may* hold scoped write
+access to Dex's `passwords` resource in the `auth` namespace, for the purpose of invite-based
+local-account creation. This is a deliberate, bounded reversal of the prior "no write access to
+the shared identity provider" posture (ADR-002/013).
+
+**Why this is acceptable (the case for keeping it).**
+- The RBAC is **minimally scoped**: `create`+`get` on one resource type in one namespace, not
+  broad Dex/cluster write. Blast radius is bounded and inspectable.
+- It enables friend onboarding **without Google OAuth app verification** (ADR-008 deferred that),
+  which is genuinely useful for Future B — and necessary for users who won't use Google (the
+  deciding fact in the keep decision above).
+- The code is careful: validate-before-consume, single-use tokens, graceful off-cluster degrade,
+  sentinel errors mapped to clear messages, the base64-bcrypt storage gotcha handled.
+
+**Consequences / known gaps (the case to watch).**
+- **Reverses a load-bearing principle.** ADR-002 and ADR-013 leaned on "Tapir never writes to the
+  shared identity provider" for blast-radius minimisation. That is no longer true. Anyone reading
+  those ADRs without this one would be misled — hence the cross-references added to both.
+- **Create/delete asymmetry → orphaned Dex accounts.** Tapir now *creates* Dex Password CRs but
+  (per ADR-013) does not *delete* them on account deletion. A deleted Tapir user leaves an
+  orphaned Dex local-password account that can still authenticate (though it would hit the
+  registration gate with no profile). This widens the ADR-013 right-to-erasure gap. **Open —
+  accepted for Future B, revisit before Future C (do NOT add `delete` RBAC just to fix this).**
+- **`create` on a shared-namespace identity resource** is a meaningfully larger trust surface than
+  the rest of Tapir. If the `tapir` pod is compromised, the attacker can mint Dex local accounts.
+  Bounded by the namespace/resource scope, but real — worth a deliberate look before Future C.
+- Token custody for invites is in PG (`invitations.token`) in plaintext; single-use + 7-day TTL
+  bound the exposure, but a DB read yields live invite tokens until claimed/expired.
+
+**Process note (why this ADR is retroactive).** This capability was built and deployed by
+parallel agent sessions while the main planning thread was elsewhere, and shipped with no ADR —
+the first time in this project a guardrail-reversing change skipped the decision-before-code
+discipline. Recorded here not to rubber-stamp it but to restore the audit trail: the decision is
+now visible, its principle-reversal is named, and its open gaps (orphaned accounts, the larger
+trust surface) are tracked rather than buried in a release note. The maintainer ratified KEEP
+after the fact (see status block) on the deciding fact that some intended users cannot use Google
+OIDC.
+
+**Open items this ADR creates (tracked in infra):**
+- Confirm the RBAC really is `create`+`get` only (not broader) against the deployed manifest in
+  `infra` — a security claim currently resting on a sibling report, not a verified manifest read.
+- Accept the orphaned-Dex-account gap for Future B; revisit (orphan cleanup + the whole Dex-write
+  surface) before any Future C move. Do **not** add `delete` RBAC solely to fix the orphan.
+- Review the larger trust surface before any Future C move.
+
+---
+
+## ADR-018 — Make Tapir usable unprompted: in-process scheduled discovery, auto-summarize default, gate-clock reset
+
+**Status:** Accepted (2026-06-03)
+
+**Context.** The Stage-0 gate (ADR-016) measures whether the maintainer or a friend *returns and
+reads/acts* over weeks. But the system could not actually be used that way: discovery (`tapir
+run`) was **host-side manual**, so a newly onboarded user saw an empty list and had no reason to
+return. The gate was structurally unmeetable — not because the product failed, but because the
+*workflow* depended on the maintainer SSHing in to trigger each pass. The runner already has a
+`Loop(ctx, interval)` (run-on-start, then every tick) and per-user mode/dedup/backoff; what was
+missing was *invocation* — nothing called it for the deployed users on a schedule.
+
+**Decision.**
+1. **In-process scheduled discovery.** `tapir serve` launches a background goroutine that runs
+   discovery for **all users** on an interval (`TAPIR_DISCOVERY_INTERVAL`; unset/0 = off). It
+   enumerates users (un-RLS'd `user_identities`) and runs each user's pass inside `withUser`,
+   reusing the existing `runner` — not a new scheduler. Stateless timing; ctx-cancellable;
+   per-user failures isolated.
+2. **Auto-summarize default ON** for Future-B users (new registrations default `true`; existing
+   rows updated), so discovery both populates *and* summarizes — the list fills itself. The
+   per-user manual toggle remains.
+3. **Gate-clock reset.** The Stage-0 3–4 week window (ADR-016) **starts when this ships**, because
+   unprompted use was impossible before it. This is starting the clock when the experiment can
+   actually run, **not** a reset to dodge a failing gate (the prior window measured nothing —
+   there was no way to use the system unprompted). The 2026-07-01 check-in moves accordingly to
+   ~3–4 weeks after this deploys.
+
+**Why in-process and not a k8s CronJob.** Maintainer's call: simpler deploy (no second deployable),
+acceptable at Future-B scale (1–3 users). The CronJob's advantage — failure isolation between
+discovery and the web/read path — was weighed and traded away knowingly.
+
+**Consequences / constraints.**
+- **Discovery shares the web process's lifetime and egress.** A wedged discovery pass can degrade
+  the reading UI (the coupling a CronJob would have avoided). Accepted at this scale.
+- **SINGLE-REPLICA ASSUMPTION (load-bearing).** If `tapir serve` ever runs >1 replica, *every*
+  replica runs the discovery loop → every user fetched in parallel (429s + duplicate work). Tapir
+  must stay single-replica while in-process scheduling is enabled, or this is revisited (move to
+  CronJob, or add leader-election). Recorded so a future scale-up doesn't silently double-run.
+- **Makes ADR-014 item 2 (shared per-egress-IP rate gate) load-bearing.** In-process + auto +
+  multi-user drives all caption fetches through one pod egress, concurrent with click-path
+  Summarize. The build confirms/finishes the process-wide rate gate in the same slice; without it
+  the system self-inflicts 429s every cycle. **Auto-summarize ON is gated on the rate gate
+  existing** (fallback: ship discovery with auto OFF until it does).
+
+**Reversibility.** Disable via `TAPIR_DISCOVERY_INTERVAL=0` (reverts to manual `tapir run`).
+Moving to a CronJob later is a superseding ADR; the per-user `runner` is unchanged either way.
+Spec: `docs/specs/scheduled-discovery.md`.
+
+---
+
+## ADR-019 — Authentik owns invites; Tapir stops provisioning accounts
+
+**Status:** Accepted (2026-06-07). **Supersedes ADR-017** (Dex local-password invite
+provisioning).
+
+**Context:** infra ADR-0001 migrated the homelab IdP Dex→Authentik. Authentik provides
+first-class invite flows; the Dex local-password connector never consulted the Password
+CRs Tapir wrote (the defect that triggered the migration). Tapir-web's OIDC issuer now
+points at Authentik (infra ADR-0001 step 3).
+
+**Decision:** Tapir no longer provisions accounts. The Dex-password invite path is removed:
+`internal/adapters/dex`, the public `/invite/{token}` set-password UI (`internal/web/invite.go`),
+the `tapir invite` CLI (`cmd/tapir/invite.go`), the `InvitationStore`/`DexPasswordCreator`
+ports + `App.Invitations`/`App.Dex` wiring, the invite Templ pages, and the
+`tapir invite` Taskfile target. New users are invited via Authentik's flow, log into Tapir
+via OIDC, and are captured by Tapir's existing provider-agnostic `/register` (display name).
+Login + Google moved by config only (Authentik per-app issuer); the OIDC adapter is unchanged.
+
+**Consequences:** smaller Tapir blast surface — no writes to the shared identity provider, no
+configmap/CR access, the dedicated `passwords.dex.coreos.com` RBAC + ServiceAccount are
+removed (infra side, coupled change). The `invitations` table (migration 009) is left in
+place — migrations are append-only and the unused table is harmless; a future migration may
+drop it. The `*_DEX_*` config/identity names (`TAPIR_DEX_CLIENT_*`, `dex_subject`, the
+`DexAuth`/`oidc` package) are now misnomers; renaming is deferred (cosmetic, not behavioural).
+
+**Rejected:** keeping Tapir's `/invite` UI but calling Authentik's API on claim — couples
+Tapir to Authentik's admin API + a token for no real gain; Authentik's own invite flow is
+the supported path.
+
+---
+
+## ADR-020 — Recency-bounded auto-summarize + honest sparse-state surface
+
+**Status:** Accepted (2026-06-08). **Refines ADR-018** (auto-summarize) and **ADR-014**
+(per-IP caption rate gate).
+
+**Context.** Tapir is operational but sparse: at real subscription volume the maintainer's
+account holds ~283 discovered videos, ~15 summarized, ~256 behind the respected per-IP caption
+rate gate, ~12 no-captions. Two problems follow. (1) **Load:** ADR-018 auto-summarizes *every*
+unseen video, so a large back-catalogue re-drives the whole queue through the gate every cycle —
+self-inflicted 429s with no user value (nobody is waiting on a 6-month-old video). (2) **First
+contact:** a new user sees a mostly-empty feed with no moving parts and a UI that implied
+abundance/imminence ("fetching soon" ×256, "Run `tapir run`", "Summarize now"); the Stage-0 gate
+is *return usage*, and the experience died at the first visit. Source: a UX heuristic review
+(`docs/ux-review/UX-REVIEW-stage0-recency.md`).
+
+**Decision.**
+1. **Recency bound on auto-summarize.** In automatic mode the scheduler only summarizes videos
+   published within `TAPIR_AUTO_SUMMARIZE_WINDOW` (default ~7d). Older videos are still discovered
+   and listed but not auto-processed — they keep the manual "Summarize" affordance. An explicit
+   manual request bypasses the bound. `0` disables it (pre-recency behaviour). This bounds auto
+   *load*; it does not fetch harder — the gate (ADR-014) is untouched and the manual path still
+   serialises through it.
+2. **Honest sparse-state surface.** Copy is reframed to surface scarcity truthfully, never to
+   look fuller: "N ready · M in queue · K no captions" (not "fetching soon"); a one-line "captions
+   are fetched slowly on purpose" note; "Summarize" (not "Summarize now"); the empty-connected
+   state stops printing an impossible CLI command.
+3. **Feed IA = one list, noise-collapsed.** Summarized + recent un-summarized cards lead inline;
+   the older un-summarized back-catalogue collapses behind a single "Show N older videos"
+   disclosure; caption-less videos collapse to a one-line count instead of N dead cards. List is
+   ordered summarized-first, then `published_at DESC NULLS LAST`.
+
+**Consequences.** The auto path's per-cycle fetch volume is bounded by recent uploads, not the
+whole back-catalogue, so steady-state 429 pressure drops sharply. Older videos become explicitly
+on-demand — a deliberate honesty trade (the user chooses to spend a scarce fetch on old content).
+The single-replica assumption (ADR-018) is unchanged.
+
+**Deliberately NOT done (premature until the Stage-0 loop is validated).** Return-nudges
+(digest email / push) — a nudge contaminates the *unprompted*-return signal the gate measures
+(ADR-016); building it now poisons the experiment. Also deferred: full-text search, channel
+facets, read/unread, saved views — all need summary abundance to matter.
+
+**Reversibility.** `TAPIR_AUTO_SUMMARIZE_WINDOW=0` restores summarize-every-unseen; the feed
+collapse keys off the same window (`App.RecencyWindow=0` → everything inline).
+
+---
+
+## ADR-021 — Persist transcripts as shared, video-keyed public content (re-analysis never re-fetches)
+
+**Status:** Accepted (2026-06-09). **Reopens the transcripts half of** the "Global cross-tenant
+`videos`/`transcripts` table" rejection (data-model.md). **Builds on ADR-007** (captions-first),
+**ADR-010/ADR-014** (the per-IP caption rate gate), and **ADR-012** (per-user RLS isolation).
+
+**Context.** Every summarization fetches the transcript fresh through the caption path, even when
+the exact same transcript was fetched moments ago — for the same user re-summarizing, or for a
+second user who happens to watch the same video. The caption fetch is the one genuinely scarce,
+genuinely risky operation in the system: YouTube's timedtext endpoint is unofficial and per-IP
+rate-limited (ADR-010), and tripping it risks the maintainer's Google standing (ADR-014). So the
+operation we most want to *avoid repeating* is the one we currently repeat unconditionally. A
+transcript is **public content** — the same words YouTube serves to anyone — and carries nothing
+user-identifying. The per-user isolation that protects summaries, feeds, and tokens (ADR-012) is
+the wrong shape for it: it forces a re-fetch per user for data that is identical across users.
+
+The original rejection ("Global cross-tenant `videos`/`transcripts` table") bundled videos and
+transcripts together and rejected both on the grounds that "at 1–5 users, re-summarizing is
+cheaper than the coupling." That reasoning holds for **videos** (per-user feed rows, genuinely
+user-scoped) but not for **transcripts**: the cost being avoided is not LLM re-summarization, it
+is a *rate-gated, reputation-risky network fetch*, and that cost is paid per re-fetch regardless
+of user count. One re-fetch avoided is strictly worth more than the coupling it removes.
+
+**Decision.**
+1. **A single shared `transcripts` table, keyed by the cross-user dedup key
+   `(provider, provider_video_id)`** — the stable public identity of the video, not Tapir's
+   internal per-user `videos.id`. Columns: the key, `source` (`captions`/`none`), `language`,
+   `content`, `fetched_at`. It holds **only public caption content + the video's public id** —
+   nothing user-identifying — and is therefore **NOT RLS-scoped**: no `user_id`, no policy, no
+   `FORCE ROW LEVEL SECURITY`. This is the deliberate, single exception to the ADR-012 isolation
+   boundary, and the only one.
+2. **Summarize path becomes read-stored-first.** Have a stored transcript for this video? →
+   summarize from the stored text, **no caption fetch**. No stored transcript? → fetch *through
+   the unchanged gate* (ADR-014) → store it → summarize. The gate is neither bypassed nor
+   weakened; persistence reduces how *often* we reach it, never how *fast*.
+3. **De-facto cross-user dedup is the intended behaviour, not a feature with a switch.** Two
+   users who share a video share the one transcript row. A permanent `source = 'none'` (no
+   captions) is stored too, so a known-caption-less video is not re-fetched by anyone. A
+   transient 429 (`SourceRateLimited`) is **never** stored as terminal — it stays a per-user
+   retry via the existing `transcript_status` backoff (ADR-014), so persistence cannot mask a
+   rate-limit into a false "no transcript."
+4. **Per-user `summaries` stay RLS-scoped (ADR-012 unchanged)** and reference the transcript by
+   video id. Videos stay per-user. Only transcripts go shared.
+
+**Consequences.** Re-analysis (re-summarize, different model, paste of an already-seen video,
+onboarding of a second user with overlapping subscriptions) never re-touches YouTube — the
+primary win, and it *reduces* aggregate caption-gate pressure, reinforcing ADR-010/ADR-014 rather
+than straining them. The isolation surface gains exactly one non-RLS table; an isolation test
+asserts the boundary is *exactly* there and has not leaked to any user-owned table (this is the
+proof the public-content classification was implemented as designed). It also unblocks
+multi-model / customizable analysis (re-run analysis on stored text for free) — enabling that is
+this ADR's point; building it is separate.
+
+**Reversibility.** The read-stored-first check is the only behavioural coupling; removing it
+restores fetch-every-time. The down-migration recreates the per-user RLS-scoped transcripts shape
+(001/003). No user-facing surface depends on cross-user sharing — sharing is the *storage shape*,
+never exposed in the UI.
+
+---
+
+## ADR-022 — Summarizer is a resilient endpoint chain, not a single model
+
+**Status:** Accepted (2026-06-10). **Extends ADR-004** (the copied `llm` Primary→Fallback
+routing). Triggered by the first friendly-pilot live run, where a connected user got **zero**
+summaries after 12h.
+
+**Context.** Stage-0 ran a single summarizer model (`koala/phi4-mini`) with no fallback wired
+(`summarizer.New(primary, nil)`). The live run exposed three independent failure modes, each of
+which silently produced no summary:
+
+1. **Context overflow.** `phi4-mini` has an 8k context. Real transcripts (one was 11,602 tokens)
+   exceed it and the gateway returns HTTP 400 — and the request also sent `max_tokens=8192`, so
+   even a short transcript plus the completion budget could overflow the window.
+2. **Malformed model output.** `phi4-mini` intermittently emits `highlights` as a bare string
+   instead of an array, producing `cannot unmarshal string into []string`. The old code returned
+   the parse error **without** trying any other model — a 200-with-bad-JSON short-circuited.
+3. **No fallback existed at all** — any primary failure was terminal for that video.
+
+`phi4-mini` is kept as primary deliberately: it is fast and, on transcripts that fit, correct.
+The fix is resilience around it, not replacing it.
+
+**Decision.**
+1. **Ordered endpoint chain (`summarizer.NewChain`).** Endpoints are tried in order; the first to
+   return a *parseable* summary wins. Default chain:
+   `koala/phi4-mini` (primary, local) → `koala/phi4-14b` (fallback, local) →
+   `berget/mistral-small` (worst-case, external). All three are reached through the **one** LiteLLM
+   gateway by alias — the gateway already fronts both llama-swap and berget — so a fallback is a
+   different alias, not a second client config.
+2. **A parse failure advances the chain, same as a transport error.** "Reliably summarized" means
+   *parseable summary returned*, not *HTTP 200*. This is the behaviour the old Primary→Fallback
+   shape missed.
+3. **Tolerant parse.** `highlights`/`takeaways` coerce from a bare string (or a mixed scalar
+   array) to `[]string`, so the most common small-model quirk is absorbed **without** spending a
+   fallback round-trip — keeping the fast path fast.
+4. **Transcript truncation (`TAPIR_MAX_TRANSCRIPT_CHARS`, default 18000).** Input is bounded
+   up-front to fit a small-context primary, so overflow is prevented rather than recovered-from.
+5. **Bounded completion budget (`TAPIR_SUMMARY_MAX_TOKENS`, default 1500).** A summary needs few
+   hundred tokens; the old 8192 budget itself contributed to 8k-window overflow.
+
+**Local-first guarantee preserved.** The chain ordering *is* the guarantee: locals are tried
+first, so content reaches the external endpoint only after every local endpoint has failed.
+`TAPIR_CLOUD_FALLBACK_MODEL=""` removes the external endpoint entirely — the lever a
+**client/NDA deployment** pulls so content never leaves the local stack. With no external endpoint
+configured the `ai_routing.feature` "content only local" scenarios hold unchanged.
+
+**Reversibility.** Pure wiring + config. Setting `TAPIR_FALLBACK_MODEL` and
+`TAPIR_CLOUD_FALLBACK_MODEL` empty collapses the chain back to single-primary behaviour; the
+tolerant parse and truncation are strict supersets of the old behaviour (a previously-parseable
+reply still parses; a transcript within budget is unchanged).
+
+---
+
+## ADR-023 — Drop Shorts/livestreams at discovery to protect the caption budget
+
+**Status:** Accepted (2026-06-10). **Builds on ADR-014** (per-IP caption rate limit is the
+binding constraint) and the ADR-022 live-run findings.
+
+**Context.** The scarce resource is the unofficial timedtext caption fetch (per-egress-IP
+429, ~3 successful/pass). The first multi-user run showed the candidate set was mostly noise —
+Shorts, sub-minute clips, and live broadcasts — each of which still consumes a caption-fetch
+attempt (and a "none" result is a *completed* fetch, so it costs budget even when it yields
+nothing). Spending the rate-limited budget on content the user will not read is the waste to
+cut first; it is cheaper and lower-risk than raising the ceiling (multi-IP, Whisper).
+
+Duration and live status are NOT in the playlistItems discovery response, but they ARE in the
+Data API `videos.list` (contentDetails.duration + snippet.liveBroadcastContent) — the official
+**quota-based** API (1 unit/call, 50 ids/call), which is a *different* limit from the timedtext
+429. So one cheap quota call buys a filter that saves many expensive throttled fetches.
+
+**Decision.**
+1. `NewVideos` enriches its candidates with a single `videos.list` call and drops, before
+   returning: videos shorter than `TAPIR_MIN_VIDEO_SECONDS` (default 60) and any `live`/
+   `upcoming` broadcast. Dropped videos are never persisted, so they also declutter the list.
+2. The filter is **degrade-open**: `MinVideoSeconds=0` disables it (no quota call), and a
+   `videos.list` error returns the candidates unfiltered — discovery must never break because a
+   metadata call hiccuped (worst case = pre-ADR-023 behaviour).
+3. The paste-a-URL path (`VideoByID`) is **not** filtered — an explicit user request for a
+   specific video (even a Short) is honoured.
+
+**Reversibility.** Pure discovery-time filter + config. `TAPIR_MIN_VIDEO_SECONDS=0` restores
+the old behaviour. No schema change, no effect on already-stored videos.
+
+**Quota note.** Per-channel enrichment adds ~1 unit/channel/pass. At pilot scale (≤3 users)
+this is well under the 10k/day cap; at larger scale, batch `videos.list` across channels
+(50 ids/call) by collecting all discovered ids per pass before enriching.
+
+---
+
+## ADR-024 — Per-channel caption-availability memory
+
+**Status:** Accepted (2026-06-10). **Builds on ADR-014** (per-IP caption budget), **ADR-021**
+(shared transcript cache), **ADR-023** (Shorts filter).
+
+**Context.** After ADR-021 caches transcripts and ADR-023 drops Shorts, the remaining caption
+waste is the *first* fetch on every new video of a channel that never publishes English captions
+(foreign-language news, music, etc.). Each costs one rate-limited fetch to resolve to "none" —
+and on a throttled IP that fetch may 429 and churn the backoff machinery before it ever gets a
+verdict. A pilot user's feed had several such channels.
+
+**Decision.** Remember, per `(user, channel)`, a streak of consecutive no-caption outcomes
+(`channel_caption_state`, migration 016, RLS-scoped like the rest of the user-owned schema).
+Once the streak reaches `TAPIR_CHANNEL_CAPTIONLESS_THRESHOLD` (default 5) the channel is
+suppressed — its videos are discovered/listed but not caption-fetched — for
+`TAPIR_CHANNEL_CAPTIONLESS_WINDOW` (default 14d), after which one video is re-probed
+(auto-recovery for a channel that starts adding captions). A successful fetch resets the streak;
+a fresh 429 does NOT count (transient, not a caption verdict). An explicit manual request
+bypasses suppression. `threshold = 0` disables the feature.
+
+**Why per-user, not global.** Caption availability is really a channel property (public), so a
+global table would let users share the learning. But subscriptions are per-user (ADR-012) and at
+pilot scale users' channel sets barely overlap, so per-user + RLS keeps it consistent with the
+existing isolation model with no new non-RLS exception to justify. Promoting to a shared table
+(like transcripts, ADR-021) is a future optimisation if channel overlap grows.
+
+**Reversibility.** Migration 016 is a clean drop; `threshold = 0` disables at runtime. The
+memory only ever *suppresses fetches* — it never deletes content or affects already-stored
+summaries.
+
+---
+
+## ADR-025 — Honest, state-aware foreground summarization status
+
+**Status:** Accepted (2026-06-10). **Pillar B of the manual-mode UX work** (Pillar A, foreground
+fetch priority, is a separate follow-up). Builds on ADR-014 (the rate limit the UX must make
+legible).
+
+**Context.** Clicking "Summarize" spawned a background goroutine and polled `/status`, which
+returned only two states: the spinner (in-flight) or the normal card (done). But the web
+`ProcessVideo` only recorded an outcome on *success* — a 429'd or caption-less click left
+`transcript_status` unset, so the next poll silently reverted to the "Summarize" button. The
+user saw either an endless spinner or a button that did nothing useful when clicked again. The
+binding constraint (YouTube's caption rate limit) was completely invisible.
+
+**Decision.**
+1. **Record every outcome on the web path**, mirroring the runner: `ProcessVideo` stamps
+   `rate_limited` / `none` / `fetched`. A rate-limited video keeps its requested flag so the
+   background sweep retries it; `none` and `fetched` are terminal.
+2. **`/status` is state-aware**: summarized → summary card; in-flight → working spinner;
+   `rate_limited` → a calm "waiting, will retry" card that keeps polling (every 30s) so the
+   summary appears on its own when the retry lands — the user never clicks again;
+   `none` → a terminal "no captions" card with no poll and no dead-end button.
+3. **Charm status text** (Claude-Code / Crush inspired): the working spinner cycles playful,
+   tapir-themed gerunds ("Chewing the cud…", "Munching leaves…", "Distilling the gist…") via
+   CSS only — no JS, keeping the HTMX/no-JS ethos. Decorative (aria-hidden) with a stable
+   `role=status` line for assistive tech.
+
+**Principle.** When the system cannot be fast (throttled IP), it is at least honest, and it
+self-resolves without making the user retry. Honesty is the load-bearing half — Pillar A's
+priority lane only improves the odds of a fast slot; it cannot beat an already-hot IP.
+
+**Reversibility.** Pure transport-layer + view change over the unchanged engine/ports. No
+schema change (reuses `transcript_status` from migration 007).
+
+---
+
+## ADR-026 — Foreground caption fetches take priority; the credentials probe is dead
+
+**Status:** Accepted (2026-06-10). **Pillar A of the manual-mode UX work** (Pillar B was
+ADR-025). Builds on ADR-014 (the shared per-IP gate).
+
+**Context.** Every caption fetch — the background sweep and the web click-path — shared one
+process-wide rate gate equally. So a user waiting on a "Summarize" click competed with the
+firehose for both pacing and the scarce pre-429 window; on a busy IP the click was slow or
+429'd while the background churned.
+
+**Decision.** A context-marked priority lane. The web path
+(`engineProcessor.ProcessVideo`) wraps its context with `ForegroundContext`; the gate gives
+foreground fetches a token immediately, while **background fetches yield** — they wait until no
+foreground fetch is pending before taking a token. Threaded via a context value (not new
+signatures) and a process-wide `foregroundPending` counter. Clicks are rare and bursty, so the
+background barely loses throughput; the waiting human gets the next (and cleanest) slot.
+
+**Credentials probe — rejected, not built.** The idea was to fetch captions with the user's
+auth in manual mode to dodge 429s. It is a dead end, already settled by ADR-010 and the code:
+the caption path is *deliberately anonymous* because the InnerTube/timedtext endpoints **reject
+or break on authenticated requests** (`captions.go`: "no OAuth token — it can break the
+timedtext endpoint"). The user's OAuth (a Data API credential) does not authenticate InnerTube
+at all, and the official `captions.download` is owner-only (403 on third-party). So auth cannot
+help here and can actively hurt. No probe needed — building one would only re-confirm the ADR.
+
+**Reversibility.** Context-marker + a yield loop in the gate; removing the marker collapses to
+the prior equal-share behaviour. No schema or API change.
+
+---
+
 ## Rejected alternatives
 
 Approaches considered during the 2026-06-02 planning + grill session and **deliberately not
@@ -503,13 +1002,15 @@ maps to the ADR that settles it.
 | Lifting shared packages into a `brain-common` module | Couples Tapir's release cycle to the monolith for negligible code savings | ADR-004 |
 | Importing/replicating the filesystem `brain` package | Assumes co-location with the brain git checkout; wrong for a standalone networked service | ADR-005 |
 | Reusing `ingestion`'s `oauth` package for YouTube/Vimeo | Same name, opposite direction — it's inbound MCP-server auth, not outbound provider OAuth | ADR-006 |
-| Global cross-tenant `videos`/`transcripts` table (dedup) | Reintroduces the cross-domain DB coupling the homelab review is removing; at 1–5 users, re-summarizing is cheaper than the coupling | data-model.md |
+| Global cross-tenant `videos`/`transcripts` table (dedup) | Reintroduces the cross-domain DB coupling the homelab review is removing; at 1–5 users, re-summarizing is cheaper than the coupling. **Transcripts half reopened by ADR-021** — the avoided cost there is a rate-gated, reputation-risky *caption fetch*, not LLM re-summarization, so it outweighs the coupling; **videos stay per-user.** | data-model.md, **ADR-021** (transcripts only) |
 | Audio-download + Whisper STT in the core path | ToS-grey, breakage-prone (yt-dlp), contends for koala GPU with the JEPA PoC; captions alone test the core hypothesis | ADR-007 |
 | Building multi-tenant SaaS / Google OAuth verification now | "Real users soon" was lowered to Future B; SaaS machinery before the Stage 0 self-use gate is the primary documented anti-goal | ADR-008, VISION |
 | Delegating the S5 reuse spike to an agent swarm | A 1-hour sequential read-and-judge with a single coupled conclusion; orchestration overhead exceeds the work, and it's Diamond-1 judgment the maintainer wanted to own | (process note) |
 | Vault-write SA for per-user OAuth tokens (ESO as runtime write path) | ESO syncs vault→cluster at deploy time, not a runtime write API; a write-SA widens blast radius to shared infra to store app row-data | ADR-015, infra#88 |
 | Supabase for per-user credential storage | Adds a second datastore for a few encrypted strings PG18 already holds; reopens ADR-002 | ADR-015, infra#88 |
 | Feedback-based Stage 0 gate (friends saying it's useful) | Politeness bias makes asked-for feedback the least reliable signal; return-usage is the real test | ADR-016 |
+| Reverse the Dex-write invite flow (Google OIDC only) | Some intended Future-B users won't use Google; OIDC-only leaves them with no onboarding path — invite flow is load-bearing | ADR-017 |
+| k8s CronJob for scheduled discovery (vs in-process) | At Future-B scale the in-process scheduler is simpler to deploy; CronJob's failure-isolation benefit was weighed and traded away knowingly (revisit if >1 replica or load grows) | ADR-018 |
 
 If a future case genuinely reopens one of these, that's a new ADR superseding the relevant one —
 not a silent reversal.

README.md

@@ -37,7 +37,7 @@ model, behavior specs) remain the source of intent.
 
 ## Running the Stage-0 demo
 
-Tapir runs on **your own** YouTube account: authorize once, then run the
+Tapir runs on your YouTube account(s): authorize once, then run the
 watch→summarize→deliver loop. All configuration is via `TAPIR_*` environment
 variables — copy [`.env.example`](.env.example) to `.env` and fill it in (no
 secrets are committed; at demo time source them from op, e.g. `op run -- ...`).
@@ -56,7 +56,7 @@ go build -o bin/tapir ./cmd/tapir
 ./bin/tapir auth
 
 # 3. run: detect new videos across your subscriptions, summarize, deliver to the
-#    store. Unset TAPIR_POLL_INTERVAL = single pass; set it (e.g. 15m) to loop.
+#    store. Single pass; set TAPIR_DISCOVERY_INTERVAL (e.g. 2h) for the serve loop.
 ./bin/tapir run
 ```
 
@@ -68,6 +68,18 @@ URI matches `TAPIR_OAUTH_REDIRECT_ADDR`. The summarizer model
 (`TAPIR_SUMMARIZER_MODEL`, default `koala/phi4-mini`) is overridable; pick the
 final alias when the gateway is reachable (see `docs/homelab-integration.md`).
 
+### Web surface (`tapir serve`)
+
+`tapir serve` starts the HTMX+Templ web UI on `:8080`. Users log in via Dex OIDC (local
+password or Google); a new Dex subject is routed to `/register` to create a Tapir account.
+Stage 1 is multi-user: each user connects their own YouTube account from the browser and
+manages their own summaries under DB-enforced RLS isolation. When `TAPIR_DISCOVERY_INTERVAL`
+is set (e.g. `2h`), the serve process runs a scheduled discovery pass for every registered
+user automatically — no CronJob required. In auto mode only videos published within
+`TAPIR_AUTO_SUMMARIZE_WINDOW` (default ~7d, ADR-020) are summarised automatically; older videos
+are listed and summarised on demand, so a large back-catalogue doesn't keep re-driving the
+caption rate gate. See `docs/homelab-integration.md` for the full config reference.
+
 ### Headless on koala
 
 koala has no browser and no interactive `op` session, so the two interactive

VISION.md

@@ -59,8 +59,11 @@ to the next stage's ambition until the current stage's test passes.
 ### Stage 0 — Useful to me or a friend (the gate)
 
 > **Headline test:** Over a 3–4 week window, *either* the maintainer *or* at least one
-> onboarded friend returns to Tapir **unprompted** and reads/acts on summaries in **≥2
-> separate weeks**. The test is *return usage* (behavioural), not stated approval.
+> onboarded friend returns to Tapir and reads/acts on summaries in **≥2 separate weeks**.
+> The test is *return usage* (behavioural), not stated approval. The ideal signal is an
+> **unprompted** return (organic, not because the maintainer nudged them) — but see the
+> measurement note below: we currently cannot distinguish prompted from organic returns, so
+> in practice we count all returns and read the result with that caveat.
 
 - Captions-first summarization works end-to-end for real subscriptions (the maintainer's
   and onboarded friends').
@@ -69,12 +72,29 @@ to the next stage's ambition until the current stage's test passes.
   most of the time.
 - **Why behavioural, not feedback.** Friend *feedback* is gathered and genuinely valuable —
   but it is **not** the gate. Asked-for feedback from friendly users is the least reliable
-  signal in product development (politeness bias); whether they *come back on their own* is
-  the thing we actually care about. So the gate measures returns, not nice words.
+  signal in product development (politeness bias); whether they *come back* is the thing we
+  actually care about. So the gate measures returns, not nice words.
+- **Measurement note — "unprompted" is an ideal we can't yet measure.** Whether a return was
+  organic or prompted by a nudge is not captured by any data Tapir holds (it's context only
+  the maintainer has). Rather than waive the standard, we name the gap: *unprompted* return
+  is the signal we genuinely want; *returns* (prompted or not) is what the data can show. A
+  return that needed a nudge is a weaker signal than one that didn't, and the result is read
+  with that in mind. If distinguishing them ever matters enough, the maintainer tracks nudges
+  manually or a future build records prompt events — neither is in scope now.
 - **Why "me OR a friend".** This replaces the original "useful to *me*, specifically" gate
   (2026-06-03 decision, recorded in DECISIONS.md ADR-016). Getting signal from friendly
   users is valuable enough to count — but the bar stays behavioural so it can't be cleared
   by a polite reaction. (Ties to the 2026-07-01 check-in.)
+- **How it's measured.** Return usage is read from two sources: `summary_actions` (timestamped
+  watch/skip/save per user) answers "acted in ≥2 distinct weeks"; an append-only login-events
+  table (see infra/Tapir build) answers "returned/read in ≥2 distinct weeks" even without an
+  action click — the honest signal for a *reading* product. Login events accrue only from their
+  deploy date onward, so the gate window's data begins then.
+- **Gate-clock reset (ADR-018).** The 3–4 week window starts when in-process scheduled discovery
+  + auto-summarize ship — before that, unprompted use was impossible, so the prior window
+  measured nothing (this is starting the clock when the experiment can actually run, not a reset
+  to dodge a failing gate). The 2026-07-01 check-in referenced above moves accordingly to ~3–4
+  weeks after this deploys. See DECISIONS.md ADR-018.
 - **This is the gate.** Hardening (Stage 1) and any SaaS ambition stay deferred until this
   behavioural signal exists. Note: multi-user machinery was deliberately built *ahead* of
   this gate (ADR-012) with isolation enforced — that was an explicit, recorded call, not a

cmd/tapir/discovery.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"context"
+	"log/slog"
+	"sync"
+
+	"gitea.d-ma.be/mathias/tapir/internal/runner"
+)
+
+// discoveryRunner runs one user's discovery pass.
+type discoveryRunner func(ctx context.Context, userID string) (runner.Stats, error)
+
+// serialize wraps run so calls never overlap: every discovery pass — scheduled
+// or connect-triggered (#6) — acquires the same lock, preserving the
+// one-fetcher-at-a-time invariant the scheduler relies on (ADR-018, the
+// single-replica assumption). Locking is per-user, so a connect-triggered pass
+// interleaves between the scheduler's users instead of waiting for a whole pass.
+func serialize(mu *sync.Mutex, run discoveryRunner) discoveryRunner {
+	return func(ctx context.Context, userID string) (runner.Stats, error) {
+		mu.Lock()
+		defer mu.Unlock()
+		return run(ctx, userID)
+	}
+}
+
+// discoveryTrigger fires an out-of-band discovery pass for one user without
+// blocking the caller (the connect HTTP handler). The pass runs on the server's
+// long-lived ctx — not the request ctx — so it survives the post-connect
+// redirect. run is the serialized runner, so a trigger never overlaps the
+// scheduler. Satisfies web.DiscoveryTrigger.
+type discoveryTrigger struct {
+	ctx context.Context
+	run discoveryRunner
+	// onboard, when set, runs after the discovery pass to summarize a capped number
+	// of the user's newest videos (Feature 1). Optional.
+	onboard func(ctx context.Context, userID string)
+	log     *slog.Logger
+}
+
+func (t *discoveryTrigger) Enqueue(userID string) {
+	go func() {
+		if _, err := t.run(t.ctx, userID); err != nil {
+			t.log.Warn("discovery: connect-triggered pass had errors", "user", userID, "err", err)
+		}
+		if t.onboard != nil {
+			t.onboard(t.ctx, userID)
+		}
+	}()
+}

cmd/tapir/discovery_test.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	"gitea.d-ma.be/mathias/tapir/internal/runner"
+)
+
+// serialize must guarantee at most one discovery pass runs at a time, so a
+// connect-triggered pass never fetches concurrently with the scheduler.
+func TestSerializeRunsOneAtATime(t *testing.T) {
+	var active, maxActive int32
+	run := func(_ context.Context, _ string) (runner.Stats, error) {
+		n := atomic.AddInt32(&active, 1)
+		for { // record the high-water mark of concurrent runs
+			m := atomic.LoadInt32(&maxActive)
+			if n <= m || atomic.CompareAndSwapInt32(&maxActive, m, n) {
+				break
+			}
+		}
+		time.Sleep(2 * time.Millisecond)
+		atomic.AddInt32(&active, -1)
+		return runner.Stats{}, nil
+	}
+
+	s := serialize(&sync.Mutex{}, run)
+	var wg sync.WaitGroup
+	for i := 0; i < 20; i++ {
+		wg.Add(1)
+		go func(i int) { defer wg.Done(); _, _ = s(context.Background(), fmt.Sprintf("u%d", i)) }(i)
+	}
+	wg.Wait()
+
+	require.Equal(t, int32(1), atomic.LoadInt32(&maxActive),
+		"serialize must run at most one pass at a time")
+}
+
+// Enqueue runs the user's pass out-of-band (non-blocking) on the trigger's ctx.
+func TestDiscoveryTriggerEnqueueRunsUser(t *testing.T) {
+	done := make(chan string, 1)
+	run := func(_ context.Context, userID string) (runner.Stats, error) {
+		done <- userID
+		return runner.Stats{}, nil
+	}
+	tr := &discoveryTrigger{ctx: context.Background(), run: run, log: quietLog()}
+
+	tr.Enqueue("u1")
+
+	select {
+	case got := <-done:
+		require.Equal(t, "u1", got)
+	case <-time.After(2 * time.Second):
+		t.Fatal("Enqueue did not run the user's pass")
+	}
+}

cmd/tapir/main.go

@@ -20,10 +20,12 @@ import (
 	"net/http"
 	"os"
 	"os/signal"
+	"sync"
 	"time"
 
 	"gitea.d-ma.be/mathias/tapir/internal/adapters/secrets"
 	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/youtube"
 	"gitea.d-ma.be/mathias/tapir/internal/auth"
 	"gitea.d-ma.be/mathias/tapir/internal/config"
 	"gitea.d-ma.be/mathias/tapir/internal/runner"
@@ -53,6 +55,8 @@ func main() {
 		err = cmdRun(ctx, log)
 	case "serve":
 		err = cmdServe(ctx, log)
+	case "report":
+		err = runReport(ctx, os.Args[2:])
 	default:
 		usage()
 		os.Exit(2)
@@ -73,6 +77,7 @@ usage:
   tapir serve             run the web UI (read summaries, record watch/skip/save)
   tapir list [-limit N]   list stored summaries, recent first
   tapir show <video-id>   show one summary in full
+  tapir report            Stage-0 usage gate: per-user distinct active weeks
 
 configuration is via TAPIR_* environment variables (see .env.example).
 `)
@@ -125,10 +130,18 @@ func cmdRun(ctx context.Context, log *slog.Logger) error {
 	if engine == nil {
 		return fmt.Errorf("run: incomplete summarization config (gateway, youtube credentials, secrets file)")
 	}
-	r := runner.New(engine.Source, st, engine, cfg.UserID, log, runner.WithBackoff(cfg.FetchBackoff))
+	// Process-wide caption-fetch rate gate (ADR-014 item 2): the batch path shares
+	// the same per-egress-IP limiter as the web click-path.
+	youtube.SetFetchRate(cfg.FetchRate)
+
+	r := runner.New(engine.Source, st, engine, cfg.UserID, log,
+		runner.WithBackoff(cfg.FetchBackoff),
+		runner.WithAutoWindow(cfg.AutoSummarizeWindow),
+		runner.WithCaptionMemory(cfg.ChannelCaptionlessThreshold, cfg.ChannelCaptionlessWindow))
 
 	log.Info("starting run", "user", cfg.UserID, "model", cfg.SummarizerModel,
-		"gateway", cfg.GatewayURL, "poll_interval", cfg.PollInterval, "fetch_backoff", cfg.FetchBackoff)
+		"gateway", cfg.GatewayURL, "poll_interval", cfg.PollInterval, "fetch_backoff", cfg.FetchBackoff,
+		"fetch_rate", cfg.FetchRate, "auto_window", cfg.AutoSummarizeWindow)
 	return r.Loop(ctx, cfg.PollInterval)
 }
 
@@ -152,6 +165,11 @@ func cmdServe(ctx context.Context, log *slog.Logger) error {
 	}
 	defer st.Close()
 
+	// Process-wide caption-fetch rate gate (ADR-014 item 2): the web click-path
+	// and the scheduled-discovery runners share one per-egress-IP limiter so they
+	// cannot collectively trip 429s. Must be set before either path fetches.
+	youtube.SetFetchRate(cfg.FetchRate)
+
 	// Auth seam (handlers depend on web.Auth only). With Dex configured
 	// (TAPIR_OIDC_ISSUER set) serve uses real OIDC login — any Dex subject may
 	// authenticate, then registers a tapir user (ADR-012); otherwise it falls
@@ -177,7 +195,11 @@ func cmdServe(ctx context.Context, log *slog.Logger) error {
 	// The file-backed SecretStore is shared by the connect flow (writes tokens)
 	// and account management (deletes them on disconnect / delete-account).
 	secretStore := secrets.NewFileStore(cfg.SecretsFile)
-	app := &web.App{Store: st, Identity: st, Auth: authn, Secrets: secretStore, Log: log}
+	app := &web.App{Store: st, Identity: st, Auth: authn, Secrets: secretStore, Log: log, RecencyWindow: cfg.AutoSummarizeWindow}
+
+	// User onboarding is handled by the IdP (Authentik invite flow), not Tapir —
+	// the Dex local-password provisioning path was removed (ADR-019). An
+	// authenticated subject with no Tapir user is routed to /register.
 
 	// Web-initiated YouTube connect (ADR-006). Mounted only when the OAuth client
 	// credentials are present; the refresh token persists through the SecretStore
@@ -189,7 +211,10 @@ func cmdServe(ctx context.Context, log *slog.Logger) error {
 			ClientSecret: cfg.YTClientSecret,
 			RedirectURL:  cfg.YTConnectRedirectURL,
 		}, secretStore, st, log)
-		log.Info("web youtube connect enabled", "redirect", cfg.YTConnectRedirectURL)
+		// Paste-a-URL (Feature 2): same YouTube credentials, per-user adapter built
+		// per request. Mounting the /paste route keys off app.Fetcher being set.
+		app.Fetcher = videoFetcher{cfg: cfg, secrets: secretStore}
+		log.Info("web youtube connect + paste enabled", "redirect", cfg.YTConnectRedirectURL)
 	}
 
 	// Immediate summarization for the web "Summarize" button. When the engine can
@@ -207,6 +232,60 @@ func cmdServe(ctx context.Context, log *slog.Logger) error {
 		log.Info("web summarization is queue-only (incomplete engine config)")
 	}
 
+	// In-process scheduled discovery (ADR-018): when enabled, a background
+	// goroutine runs a discovery pass for ALL users on TAPIR_DISCOVERY_INTERVAL,
+	// reusing the per-user runner.Runner. Cancelled by the same ctx as the server.
+	//
+	// SINGLE-REPLICA ASSUMPTION (load-bearing): this loop lives in the web process.
+	// Running serve at >1 replica would make every replica fetch every user in
+	// parallel — duplicate work and self-inflicted 429s. replicas: 1 is required in
+	// the deployment manifest; scaling up needs a CronJob or leader election first.
+	if cfg.DiscoveryInterval > 0 {
+		log.Info("scheduled discovery enabled", "interval", cfg.DiscoveryInterval, "fetch_rate", cfg.FetchRate)
+		log.Warn("scheduled discovery assumes a SINGLE replica — running serve at >1 replica double-runs discovery (ADR-018)")
+		rawRunUser := func(ctx context.Context, userID string) (runner.Stats, error) {
+			r, err := buildUserRunner(cfg, st, secretStore, userID, log)
+			if err != nil {
+				return runner.Stats{}, err
+			}
+			return r.RunOnce(ctx)
+		}
+		// One lock shared by the scheduler and connect-triggered passes (#6) so
+		// they never fetch concurrently — the single-fetcher invariant (ADR-018).
+		runUser := serialize(&sync.Mutex{}, rawRunUser)
+		// Onboarding burst (Feature 1): after the connect-triggered discovery pass,
+		// summarize up to OnboardSummarizeCount of the user's NEWEST unsummarized
+		// videos so a fresh account gets real summaries in its first session. Hard
+		// cap; explicit, so it bypasses the recency window — but every fetch still
+		// goes through globalFetchGate via the Processor. No-op when disabled
+		// (count 0) or queue-only (no Processor).
+		onboard := func(ctx context.Context, userID string) {
+			if cfg.OnboardSummarizeCount <= 0 || app.Processor == nil {
+				return
+			}
+			ids, err := st.NewestUnsummarizedVideoIDs(ctx, userID, cfg.OnboardSummarizeCount)
+			if err != nil {
+				log.Warn("onboarding: list newest unsummarized", "user", userID, "err", err)
+				return
+			}
+			for _, id := range ids {
+				if err := app.Processor.ProcessVideo(ctx, userID, id); err != nil {
+					log.Warn("onboarding: summarize", "user", userID, "video", id, "err", err)
+				}
+			}
+			if len(ids) > 0 {
+				log.Info("onboarding burst complete", "user", userID, "summarized", len(ids), "cap", cfg.OnboardSummarizeCount)
+			}
+		}
+		if app.Connect != nil {
+			app.Connect.Discovery = &discoveryTrigger{ctx: ctx, run: runUser, onboard: onboard, log: log}
+			log.Info("connect-triggered discovery enabled", "onboard_cap", cfg.OnboardSummarizeCount)
+		}
+		go runScheduler(ctx, cfg.DiscoveryInterval, st, runUser, log)
+	} else {
+		log.Info("scheduled discovery disabled (TAPIR_DISCOVERY_INTERVAL unset or 0)")
+	}
+
 	srv := &http.Server{
 		Addr:              cfg.HTTPAddr,
 		Handler:           app.Router(),

cmd/tapir/processor.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"fmt"
+	"strings"
 
 	"gitea.d-ma.be/mathias/tapir/internal/adapters/llm"
 	"gitea.d-ma.be/mathias/tapir/internal/adapters/secrets"
@@ -11,9 +12,29 @@ import (
 	"gitea.d-ma.be/mathias/tapir/internal/adapters/youtube"
 	"gitea.d-ma.be/mathias/tapir/internal/config"
 	"gitea.d-ma.be/mathias/tapir/internal/domain"
+	"gitea.d-ma.be/mathias/tapir/internal/ports"
 	"gitea.d-ma.be/mathias/tapir/internal/usecase"
+	"gitea.d-ma.be/mathias/tapir/internal/web"
 )
 
+// videoFetcher adapts the YouTube adapter to web.VideoFetcher for the paste flow
+// (Feature 2). It builds a per-user adapter bound to that user's token ref and
+// resolves a single video's metadata via the Data API — ungated; only the later
+// transcript fetch goes through globalFetchGate.
+type videoFetcher struct {
+	cfg     config.Config
+	secrets ports.SecretStore
+}
+
+func (f videoFetcher) FetchVideo(ctx context.Context, userID, videoID string) (domain.Video, error) {
+	a := youtube.New(youtube.Config{
+		ClientID:       f.cfg.YTClientID,
+		ClientSecret:   f.cfg.YTClientSecret,
+		TokenSecretRef: web.YouTubeTokenRef(userID),
+	}, f.secrets)
+	return a.VideoByID(ctx, userID, videoID)
+}
+
 // buildProcessor wires the summarization engine — YouTube source (captions-first),
 // AI-router summarizer, store sink — shared by `tapir run` and the web
 // "Summarize now" path so the wiring lives in one place. It returns (nil, nil) —
@@ -22,6 +43,40 @@ import (
 // queue-only fallback: the web UI keeps working (the button just queues) and
 // `tapir run` reports the gap via its own ValidateForRun. Missing engine config
 // is never an error here.
+// buildSummarizer wires the summarization endpoint chain (ADR-022) shared by the
+// web "Summarize now" path and the scheduler's per-user runners. The chain is:
+// primary (local, fast) → local fallback → cloud fallback (worst case). Each
+// endpoint reaches the same LiteLLM gateway with a different model alias — the
+// gateway fronts both llama-swap and berget — so a fallback is just a different
+// alias, not a second client config. Empty model entries are skipped, so a
+// client deployment can set the cloud fallback empty to keep content local.
+func buildSummarizer(cfg config.Config) *summarizer.Summarizer {
+	mk := func(model string) summarizer.Endpoint {
+		return summarizer.Endpoint{
+			Client:   llm.New(cfg.GatewayURL, cfg.GatewayKey, model, cfg.SummarizerTimeout, llm.WithMaxTokens(cfg.SummaryMaxTokens)),
+			Provider: providerOf(model),
+			Model:    model,
+		}
+	}
+	eps := []summarizer.Endpoint{mk(cfg.SummarizerModel)}
+	if cfg.FallbackModel != "" && cfg.FallbackModel != cfg.SummarizerModel {
+		eps = append(eps, mk(cfg.FallbackModel))
+	}
+	if cfg.CloudFallbackModel != "" && cfg.CloudFallbackModel != cfg.SummarizerModel {
+		eps = append(eps, mk(cfg.CloudFallbackModel))
+	}
+	return summarizer.NewChain(eps, cfg.MaxTranscriptChars)
+}
+
+// providerOf maps a model alias to the domain AIProvider recorded on summaries.
+// A "berget/" alias is an external provider; everything else is the local stack.
+func providerOf(model string) string {
+	if strings.HasPrefix(model, "berget/") {
+		return "berget"
+	}
+	return "local"
+}
+
 func buildProcessor(cfg config.Config, st *store.Store) (*usecase.Engine, error) {
 	if cfg.GatewayURL == "" || cfg.YTClientID == "" || cfg.YTClientSecret == "" || cfg.SecretsFile == "" {
 		return nil, nil
@@ -33,17 +88,17 @@ func buildProcessor(cfg config.Config, st *store.Store) (*usecase.Engine, error)
 		ClientSecret:       cfg.YTClientSecret,
 		TokenSecretRef:     cfg.YTTokenRef,
 		PreferredLanguages: []string{"en"},
+		MinVideoSeconds:    cfg.MinVideoSeconds,
 	}, secretStore)
 
-	// Local Primary only; no BYO fallback for the demo (fallback nil).
-	primary := summarizer.Endpoint{
-		Client:   llm.New(cfg.GatewayURL, cfg.GatewayKey, cfg.SummarizerModel, cfg.SummarizerTimeout),
-		Provider: "local",
-		Model:    cfg.SummarizerModel,
-	}
-	sum := summarizer.New(primary, nil)
+	sum := buildSummarizer(cfg)
 
-	return usecase.NewEngine(src, sum, st), nil
+	// The store is both the summary sink and the shared transcript cache (ADR-021):
+	// the engine reads stored transcripts before any caption fetch and writes
+	// resolved ones back, so re-analysis never re-touches YouTube.
+	eng := usecase.NewEngine(src, sum, st)
+	eng.Transcripts = st
+	return eng, nil
 }
 
 // engineProcessor adapts the engine (which works in terms of a domain.Video) to
@@ -58,6 +113,11 @@ type engineProcessor struct {
 }
 
 func (p *engineProcessor) ProcessVideo(ctx context.Context, userID, videoID string) error {
+	// This is the user-initiated (foreground) path — a click on "Summarize",
+	// "Try now", or a pasted URL. Mark the context so the caption gate gives it
+	// priority over the background sweep (ADR-026, Pillar A).
+	ctx = youtube.ForegroundContext(ctx)
+
 	row, err := p.store.GetVideoRow(ctx, userID, videoID)
 	if err != nil {
 		return fmt.Errorf("load video %q: %w", videoID, err)
@@ -77,7 +137,28 @@ func (p *engineProcessor) ProcessVideo(ctx context.Context, userID, videoID stri
 	if err != nil {
 		return fmt.Errorf("process video %q: %w", videoID, err)
 	}
-	if res.Summary != nil {
+
+	// Record the outcome so the status endpoint can show honest state (ADR-025):
+	// a 429'd or caption-less click used to leave transcript_status unset, so the
+	// poll silently reverted to the "Summarize" button. Mirror the runner: stamp
+	// rate_limited / none / fetched. A rate-limited video keeps its requested flag
+	// so the background sweep retries it; none and fetched are terminal here.
+	switch {
+	case res.Skipped && res.TranscriptSource == string(domain.SourceRateLimited):
+		if err := p.store.SetTranscriptStatus(ctx, userID, videoID, "rate_limited"); err != nil {
+			return fmt.Errorf("set rate_limited status %q: %w", videoID, err)
+		}
+	case res.Skipped:
+		if err := p.store.SetTranscriptStatus(ctx, userID, videoID, "none"); err != nil {
+			return fmt.Errorf("set none status %q: %w", videoID, err)
+		}
+		if err := p.store.ClearSummarizeRequested(ctx, userID, videoID); err != nil {
+			return fmt.Errorf("clear summarize flag %q: %w", videoID, err)
+		}
+	case res.Summary != nil:
+		if err := p.store.SetTranscriptStatus(ctx, userID, videoID, "fetched"); err != nil {
+			return fmt.Errorf("set fetched status %q: %w", videoID, err)
+		}
 		if err := p.store.ClearSummarizeRequested(ctx, userID, videoID); err != nil {
 			return fmt.Errorf("clear summarize flag %q: %w", videoID, err)
 		}

cmd/tapir/report.go

@@ -0,0 +1,67 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"os"
+	"text/tabwriter"
+
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
+)
+
+// gateThreshold is the Stage-0 gate (VISION/ADR-016): usage in >= 2 distinct
+// weeks. The gate passes when any user reaches it.
+const gateThreshold = 2
+
+// runReport prints the Stage-0 usage gate: per-user distinct active weeks (reads
+// UNION acts) and the pass/fail verdict. Read-only, cross-user — needs only
+// TAPIR_DB_DSN (not TAPIR_USER_ID; the report enumerates all users itself).
+func runReport(ctx context.Context, _ []string) error {
+	dsn := os.Getenv(envDSN)
+	if dsn == "" {
+		return fmt.Errorf("%s is required", envDSN)
+	}
+	s, err := store.New(ctx, dsn)
+	if err != nil {
+		return err
+	}
+	defer s.Close()
+
+	rows, err := s.ActiveWeeks(ctx)
+	if err != nil {
+		return err
+	}
+	return formatReport(os.Stdout, rows)
+}
+
+// formatReport renders the per-user week counts and the gate verdict. Pure: no DB,
+// no env — so the layout and verdict logic are unit-testable without Postgres.
+func formatReport(w io.Writer, rows []store.UserActiveWeeks) error {
+	if len(rows) == 0 {
+		_, err := fmt.Fprintln(w, "no users yet")
+		return err
+	}
+
+	tw := tabwriter.NewWriter(w, 0, 4, 2, ' ', 0)
+	_, _ = fmt.Fprintln(tw, "USER\tNAME\tACTIVE_WEEKS\tGATE")
+	passed := false
+	for _, r := range rows {
+		gate := "-"
+		if r.ActiveWeeks >= gateThreshold {
+			gate = "PASS"
+			passed = true
+		}
+		_, _ = fmt.Fprintf(tw, "%s\t%s\t%d\t%s\n", r.UserID, orDash(r.DisplayName), r.ActiveWeeks, gate)
+	}
+	if err := tw.Flush(); err != nil {
+		return err
+	}
+
+	verdict := fmt.Sprintf("\nGate (usage in >= %d distinct weeks): NOT YET MET\n", gateThreshold)
+	if passed {
+		verdict = fmt.Sprintf("\nGate (usage in >= %d distinct weeks): PASSED\n", gateThreshold)
+	}
+	_, err := fmt.Fprint(w, verdict)
+	return err
+}

cmd/tapir/report_test.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
+)
+
+func TestFormatReportColumnsAndGatePass(t *testing.T) {
+	rows := []store.UserActiveWeeks{
+		{UserID: "user-a", DisplayName: "Ada", ActiveWeeks: 3},
+		{UserID: "user-b", DisplayName: "", ActiveWeeks: 1},
+	}
+
+	var b strings.Builder
+	require.NoError(t, formatReport(&b, rows))
+	out := b.String()
+
+	require.Contains(t, out, "USER")
+	require.Contains(t, out, "ACTIVE_WEEKS")
+	require.Contains(t, out, "Ada")
+	require.Contains(t, out, "PASSED", "a user at >= 2 weeks passes the gate")
+
+	// The >=2 user is marked PASS; the 1-week user is not.
+	require.Contains(t, lineContaining(t, out, "user-a"), "PASS")
+	require.NotContains(t, lineContaining(t, out, "user-b"), "PASS")
+	require.Contains(t, lineContaining(t, out, "user-b"), "-", "no display name falls back to dash")
+}
+
+func TestFormatReportGateNotMet(t *testing.T) {
+	rows := []store.UserActiveWeeks{{UserID: "user-a", ActiveWeeks: 1}}
+
+	var b strings.Builder
+	require.NoError(t, formatReport(&b, rows))
+	require.Contains(t, b.String(), "NOT YET MET", "no user at >= 2 weeks fails the gate")
+}
+
+func TestFormatReportEmpty(t *testing.T) {
+	var b strings.Builder
+	require.NoError(t, formatReport(&b, nil))
+	require.Contains(t, b.String(), "no users yet")
+}

cmd/tapir/scheduler.go

@@ -0,0 +1,206 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"time"
+
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/youtube"
+	"gitea.d-ma.be/mathias/tapir/internal/config"
+	"gitea.d-ma.be/mathias/tapir/internal/ports"
+	"gitea.d-ma.be/mathias/tapir/internal/runner"
+	"gitea.d-ma.be/mathias/tapir/internal/usecase"
+	"gitea.d-ma.be/mathias/tapir/internal/web"
+)
+
+// buildUserRunner constructs a runner.Runner for one user, reusing the same
+// engine wiring as buildProcessor but bound to that user's own YouTube refresh
+// token (web.YouTubeTokenRef(userID)) — the Stage-1 per-tenant ref, not the
+// Stage-0 single ref. It returns an error (not nil) when the global config can't
+// support live summarization (gateway, YouTube client creds, secrets file), so
+// the scheduler can skip that user gracefully. A user who simply hasn't connected
+// YouTube yet builds fine here; their token ref fails to resolve at RunOnce time,
+// surfacing as a per-user error the scheduler logs and skips.
+func buildUserRunner(cfg config.Config, st *store.Store, secretStore ports.SecretStore, userID string, log *slog.Logger) (*runner.Runner, error) {
+	if cfg.GatewayURL == "" || cfg.YTClientID == "" || cfg.YTClientSecret == "" || cfg.SecretsFile == "" {
+		return nil, fmt.Errorf("buildUserRunner: incomplete summarization config (gateway, youtube credentials, secrets file)")
+	}
+
+	src := youtube.New(youtube.Config{
+		ClientID:           cfg.YTClientID,
+		ClientSecret:       cfg.YTClientSecret,
+		TokenSecretRef:     web.YouTubeTokenRef(userID),
+		PreferredLanguages: []string{"en"},
+		MinVideoSeconds:    cfg.MinVideoSeconds,
+	}, secretStore)
+
+	engine := usecase.NewEngine(src, buildSummarizer(cfg), st)
+	// Share the transcript cache (ADR-021) on the scheduler path too — without
+	// this every scheduled pass re-fetches transcripts it already had, burning the
+	// scarce per-IP caption budget (ADR-014) and starving other users. The web
+	// "Summarize now" path already sets this; the scheduler omitting it was a bug.
+	engine.Transcripts = st
+
+	return runner.New(src, st, engine, userID, log,
+		runner.WithBackoff(cfg.FetchBackoff),
+		runner.WithAutoWindow(cfg.AutoSummarizeWindow),
+		runner.WithCaptionMemory(cfg.ChannelCaptionlessThreshold, cfg.ChannelCaptionlessWindow)), nil
+}
+
+// userLister enumerates every registered user and reports a user's video
+// connections. *store.Store satisfies it via ListAllUsers + ConnectionsForUser.
+// A small local interface keeps the scheduler testable with a fake.
+type userLister interface {
+	ListAllUsers(ctx context.Context) ([]store.UserIdentity, error)
+	ConnectionsForUser(ctx context.Context, userID string) ([]store.Connection, error)
+}
+
+// runDiscoveryPass runs one discovery pass for every user. runUser performs a
+// single user's pass (production: build a runner and RunOnce). Per-user failures
+// — including a buildUserRunner error or a RunOnce error — are logged and skipped
+// so one bad user, channel, or video never aborts the others (ADR-018 failure
+// isolation). Returns the stats summed across users.
+func runDiscoveryPass(
+	ctx context.Context,
+	pass int,
+	lister userLister,
+	runUser func(context.Context, string) (runner.Stats, error),
+	log *slog.Logger,
+) runner.Stats {
+	users, err := lister.ListAllUsers(ctx)
+	if err != nil {
+		log.Error("scheduler: list users failed", "err", err)
+		return runner.Stats{}
+	}
+
+	// Keep only users with a video connection. A pass for a connectionless user
+	// (e.g. a stale Dex-era orphan identity) only tries to resolve a token that
+	// was never minted, logging a spurious "ref not found" every tick. Filtering
+	// here — BEFORE rotation — also keeps fairness honest: rotation is over the
+	// users that actually consume the caption budget, so a dead identity can't eat
+	// a rotation slot and skew the lead share.
+	var connected []store.UserIdentity
+	for _, u := range users {
+		if ctx.Err() != nil {
+			return runner.Stats{} // shutting down
+		}
+		conns, err := lister.ConnectionsForUser(ctx, u.UserID)
+		if err != nil {
+			log.Warn("scheduler: list connections failed", "user", u.UserID, "err", err)
+			continue
+		}
+		if len(conns) == 0 {
+			log.Debug("scheduler: skipping user with no video connections", "user", u.UserID)
+			continue
+		}
+		connected = append(connected, u)
+	}
+
+	// Rotate who goes first each pass. Caption fetches share one per-egress-IP
+	// rate budget (ADR-014); whoever runs first each pass spends the pre-throttle
+	// window, so a FIXED order permanently starves whoever is last (a new pilot
+	// user got 0 fetches for 12h while the first-listed user got all of them).
+	// Rotation over the connected set gives each real user the lead in turn.
+	connected = rotateUsers(connected, pass)
+
+	log.Info("scheduler: starting discovery pass", "users", len(connected))
+	var total runner.Stats
+	for _, u := range connected {
+		if ctx.Err() != nil {
+			break // shutting down: stop enumerating
+		}
+		stats, err := runUser(ctx, u.UserID)
+		total = sumStats(total, stats)
+		if err != nil {
+			log.Warn("scheduler: user discovery pass had errors", "user", u.UserID, "err", err)
+		}
+	}
+	log.Info("scheduler: pass complete",
+		"candidates", total.Candidates, "summarized", total.Summarized,
+		"skipped_seen", total.SkippedSeen, "skipped_no_text", total.SkippedNoText,
+		"skipped_manual", total.SkippedManual, "skipped_too_old", total.SkippedTooOld,
+		"skipped_rate_limited", total.SkippedRateLimited,
+		"skipped_no_caption_channel", total.SkippedNoCaptionChannel,
+		"channel_unavailable", total.ChannelUnavailable, "errors", total.Errors)
+	return total
+}
+
+// runScheduler runs a discovery pass on startup, then once every interval until
+// ctx is cancelled (pod SIGTERM exits the loop cleanly). A non-positive interval
+// disables scheduling entirely (no startup pass) so dev/tests never auto-fetch.
+// It reuses the existing runner.Runner via runUser — the only new behaviour over
+// runner.Loop is iterating all users per tick (ADR-018).
+func runScheduler(
+	ctx context.Context,
+	interval time.Duration,
+	lister userLister,
+	runUser func(context.Context, string) (runner.Stats, error),
+	log *slog.Logger,
+) {
+	if interval <= 0 {
+		return // disabled
+	}
+
+	// Derive the rotation offset from wall-clock, NOT an in-memory counter. A
+	// counter reset to 0 on every pod restart always hands the lead to the
+	// first-listed user — so frequent deploys re-starve whoever is last (exactly
+	// what happened to the first pilot user during a deploy-heavy session). A
+	// time-based offset advances with real time and is identical across restarts,
+	// so the lead rotates fairly regardless of how often the pod bounces.
+	runPass := func() {
+		pass := int(time.Now().Unix() / int64(interval/time.Second))
+		runDiscoveryPass(ctx, pass, lister, runUser, log)
+	}
+
+	runPass()
+
+	ticker := time.NewTicker(interval)
+	defer ticker.Stop()
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-ticker.C:
+			runPass()
+		}
+	}
+}
+
+// rotateUsers left-rotates users by pass positions so a different user leads each
+// pass. With n users, user i leads on every pass where pass ≡ i (mod n). A pass
+// offset that is negative or exceeds n is normalised. Order within the rotation
+// is otherwise preserved, so the set of users run is unchanged — only who is
+// first (and thus wins the scarce caption-fetch budget) rotates.
+func rotateUsers(users []store.UserIdentity, pass int) []store.UserIdentity {
+	n := len(users)
+	if n <= 1 {
+		return users
+	}
+	off := ((pass % n) + n) % n
+	if off == 0 {
+		return users
+	}
+	out := make([]store.UserIdentity, 0, n)
+	out = append(out, users[off:]...)
+	out = append(out, users[:off]...)
+	return out
+}
+
+// sumStats adds two passes' stats field-wise, so runDiscoveryPass can report a
+// per-tick aggregate across all users.
+func sumStats(a, b runner.Stats) runner.Stats {
+	return runner.Stats{
+		Candidates:              a.Candidates + b.Candidates,
+		Summarized:              a.Summarized + b.Summarized,
+		SkippedSeen:             a.SkippedSeen + b.SkippedSeen,
+		SkippedNoText:           a.SkippedNoText + b.SkippedNoText,
+		SkippedManual:           a.SkippedManual + b.SkippedManual,
+		SkippedTooOld:           a.SkippedTooOld + b.SkippedTooOld,
+		SkippedRateLimited:      a.SkippedRateLimited + b.SkippedRateLimited,
+		SkippedNoCaptionChannel: a.SkippedNoCaptionChannel + b.SkippedNoCaptionChannel,
+		ChannelUnavailable:      a.ChannelUnavailable + b.ChannelUnavailable,
+		Errors:                  a.Errors + b.Errors,
+	}
+}

cmd/tapir/scheduler_test.go

@@ -0,0 +1,216 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"io"
+	"log/slog"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
+	"gitea.d-ma.be/mathias/tapir/internal/runner"
+)
+
+func quietLog() *slog.Logger {
+	return slog.New(slog.NewTextHandler(io.Discard, nil))
+}
+
+// fakeLister returns a fixed user set (or an error) for the scheduler under test.
+type fakeLister struct {
+	users  []store.UserIdentity
+	err    error
+	noConn map[string]bool // users that have NOT connected a video source
+}
+
+func (f fakeLister) ListAllUsers(context.Context) ([]store.UserIdentity, error) {
+	return f.users, f.err
+}
+
+// ConnectionsForUser reports a single youtube connection for every user except
+// those in noConn, which return zero — the connection-less case the scheduler
+// must skip instead of running (and failing to resolve a token for).
+func (f fakeLister) ConnectionsForUser(_ context.Context, userID string) ([]store.Connection, error) {
+	if f.noConn[userID] {
+		return nil, nil
+	}
+	return []store.Connection{{Provider: "youtube"}}, nil
+}
+
+// countingRunUser records how many passes each user got, optionally failing for
+// specific users, under a mutex so it is safe across the scheduler goroutine.
+type countingRunUser struct {
+	mu      sync.Mutex
+	calls   map[string]int
+	order   []string // userIDs in the order they were run, across all passes
+	failFor map[string]bool
+}
+
+func newCountingRunUser(failFor ...string) *countingRunUser {
+	c := &countingRunUser{calls: map[string]int{}, failFor: map[string]bool{}}
+	for _, u := range failFor {
+		c.failFor[u] = true
+	}
+	return c
+}
+
+func (c *countingRunUser) run(_ context.Context, userID string) (runner.Stats, error) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	c.calls[userID]++
+	c.order = append(c.order, userID)
+	if c.failFor[userID] {
+		return runner.Stats{Errors: 1}, errors.New("boom")
+	}
+	return runner.Stats{Summarized: 1}, nil
+}
+
+func (c *countingRunUser) runOrder() []string {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	return append([]string(nil), c.order...)
+}
+
+func (c *countingRunUser) count(userID string) int {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	return c.calls[userID]
+}
+
+func (c *countingRunUser) total() int {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	n := 0
+	for _, v := range c.calls {
+		n += v
+	}
+	return n
+}
+
+func usersN(ids ...string) []store.UserIdentity {
+	out := make([]store.UserIdentity, len(ids))
+	for i, id := range ids {
+		out[i] = store.UserIdentity{UserID: id, DexSubject: "dex|" + id}
+	}
+	return out
+}
+
+func TestDiscoveryPassRunsEveryUserOnce(t *testing.T) {
+	lister := fakeLister{users: usersN("a", "b", "c")}
+	rc := newCountingRunUser()
+
+	stats := runDiscoveryPass(context.Background(), 0, lister, rc.run, quietLog())
+
+	require.Equal(t, 1, rc.count("a"))
+	require.Equal(t, 1, rc.count("b"))
+	require.Equal(t, 1, rc.count("c"))
+	require.Equal(t, 3, stats.Summarized, "stats are summed across users")
+}
+
+// Caption fetches share one per-IP budget; a fixed user order starves whoever is
+// last. Each pass must rotate which user leads so the lead slot is shared.
+func TestDiscoveryPassRotatesLeadUser(t *testing.T) {
+	lister := fakeLister{users: usersN("a", "b", "c")}
+	rc := newCountingRunUser()
+
+	runDiscoveryPass(context.Background(), 0, lister, rc.run, quietLog())
+	runDiscoveryPass(context.Background(), 1, lister, rc.run, quietLog())
+	runDiscoveryPass(context.Background(), 2, lister, rc.run, quietLog())
+
+	require.Equal(t, []string{"a", "b", "c", "b", "c", "a", "c", "a", "b"}, rc.runOrder(),
+		"each pass left-rotates the user order so every user leads in turn")
+	// Fairness: over a full rotation cycle every user ran the same number of times.
+	require.Equal(t, 3, rc.count("a"))
+	require.Equal(t, 3, rc.count("b"))
+	require.Equal(t, 3, rc.count("c"))
+}
+
+// A connectionless orphan must not consume a rotation slot: rotation is over the
+// connected users only, so two real users alternate the lead 50/50 even with a
+// dead identity listed between them.
+func TestDiscoveryPassRotationIgnoresConnectionlessUsers(t *testing.T) {
+	lister := fakeLister{users: usersN("a", "orphan", "c"), noConn: map[string]bool{"orphan": true}}
+	rc := newCountingRunUser()
+
+	runDiscoveryPass(context.Background(), 0, lister, rc.run, quietLog())
+	runDiscoveryPass(context.Background(), 1, lister, rc.run, quietLog())
+
+	require.Equal(t, []string{"a", "c", "c", "a"}, rc.runOrder(),
+		"only connected users rotate; the orphan never runs and never holds a slot")
+	require.Equal(t, 0, rc.count("orphan"))
+}
+
+func TestDiscoveryPassSkipsUsersWithoutConnections(t *testing.T) {
+	// b never connected a video source (e.g. a stale Dex-era orphan identity).
+	// It must be skipped silently — not run and logged as a token error every pass.
+	lister := fakeLister{users: usersN("a", "b", "c"), noConn: map[string]bool{"b": true}}
+	rc := newCountingRunUser()
+
+	stats := runDiscoveryPass(context.Background(), 0, lister, rc.run, quietLog())
+
+	require.Equal(t, 1, rc.count("a"))
+	require.Equal(t, 0, rc.count("b"), "a user with no connection must be skipped, not run")
+	require.Equal(t, 1, rc.count("c"))
+	require.Equal(t, 2, stats.Summarized, "only connected users contribute")
+	require.Equal(t, 0, stats.Errors, "skipping is silent — no spurious error stat")
+}
+
+func TestDiscoveryPassOneUserFailureDoesNotStopOthers(t *testing.T) {
+	lister := fakeLister{users: usersN("a", "b", "c")}
+	rc := newCountingRunUser("b") // user b's pass errors
+
+	stats := runDiscoveryPass(context.Background(), 0, lister, rc.run, quietLog())
+
+	require.Equal(t, 1, rc.count("a"))
+	require.Equal(t, 1, rc.count("b"))
+	require.Equal(t, 1, rc.count("c"), "a failing user must not abort the rest")
+	require.Equal(t, 2, stats.Summarized) // a + c
+	require.Equal(t, 1, stats.Errors)     // b
+}
+
+func TestDiscoveryPassListerErrorIsContained(t *testing.T) {
+	lister := fakeLister{err: errors.New("db down")}
+	rc := newCountingRunUser()
+
+	stats := runDiscoveryPass(context.Background(), 0, lister, rc.run, quietLog())
+
+	require.Equal(t, 0, rc.total(), "no users enumerated → no passes")
+	require.Equal(t, runner.Stats{}, stats)
+}
+
+func TestSchedulerIntervalZeroDisablesEntirely(t *testing.T) {
+	lister := fakeLister{users: usersN("a", "b")}
+	rc := newCountingRunUser()
+
+	runScheduler(context.Background(), 0, lister, rc.run, quietLog())
+
+	require.Equal(t, 0, rc.total(), "interval 0 must not run even a startup pass")
+}
+
+func TestSchedulerRunsStartupPassThenStopsOnCancel(t *testing.T) {
+	lister := fakeLister{users: usersN("a", "b", "c")}
+	rc := newCountingRunUser()
+
+	ctx, cancel := context.WithCancel(context.Background())
+	done := make(chan struct{})
+	go func() {
+		// A long interval so only the startup pass runs before we cancel.
+		runScheduler(ctx, time.Hour, lister, rc.run, quietLog())
+		close(done)
+	}()
+
+	// The startup pass is synchronous at the top of runScheduler; once all three
+	// users have a pass it has completed and the loop is parked on the ticker.
+	require.Eventually(t, func() bool { return rc.total() == 3 }, time.Second, 5*time.Millisecond)
+
+	cancel()
+	select {
+	case <-done:
+	case <-time.After(time.Second):
+		t.Fatal("scheduler did not exit after ctx cancel")
+	}
+	require.Equal(t, 3, rc.total(), "no extra passes fired between startup and cancel")
+}

docs/architecture/architecture.md

@@ -145,16 +145,113 @@ graph TB
   engine in a **background goroutine** inside `serve`; the page HTMX-polls `/v/{id}/status`,
   showing a Charmbracelet spinner while in-flight (and an honest "queued/waiting" state under
   rate-limiting — ADR-014).
-- **Summarization mode** — `users.auto_summarize` (migration 006). Auto: every new video is
-  summarized. Manual (default): new videos appear unsummarized; the button sets
-  `videos.summarize_requested`, which the next `tapir run` processes and clears. Both the click
-  path and the batch `tapir run` drive the same unchanged engine.
+- **Summarization mode** — `users.auto_summarize` (migration 006). Default is **true** for new
+  users (migration 011, ADR-018); all existing rows were back-filled via migration 012. Auto:
+  new videos **published within the recency window** (`TAPIR_AUTO_SUMMARIZE_WINDOW`, default ~7d,
+  ADR-020) are summarized automatically; older videos are discovered and listed but wait for an
+  explicit "Summarize". Manual: new videos appear unsummarized; the button sets
+  `videos.summarize_requested`, which the next `tapir run` processes and clears. A manual request
+  bypasses the recency bound. Both the click path and the batch `tapir run` drive the same
+  unchanged engine.
+- **List surface (ADR-020)** — the list reads `ListVideos` ordered summarized-first, then
+  `published_at DESC NULLS LAST`. The web layer collapses the noise so summaries are not buried:
+  un-summarized videos older than the recency window fold into one "Show N older videos"
+  disclosure, and caption-less videos collapse to a single count line. Copy surfaces scarcity
+  honestly (queue counts, gradual-fill note) — it never implies the feed is fuller than it is.
 
 The engine, ports, and sink adapters are **untouched** by all of the above — the web surface only
 reads the store and triggers the existing engine. Adding it changed wiring, not the core (ADR-003).
 
 ---
 
+## In-process scheduler (ADR-018)
+
+`cmdServe` launches a background goroutine when `TAPIR_DISCOVERY_INTERVAL > 0`. On each tick
+it calls `store.ListAllUsers` (un-RLS'd admin query), builds a per-user `runner.Runner`, and
+calls `RunOnce` for each registered user in sequence.
+
+```mermaid
+sequenceDiagram
+    participant S as Scheduler goroutine
+    participant DB as Postgres (RLS)
+    participant YT as YouTube timedtext
+    participant LLM as LiteLLM gateway
+
+    loop every TAPIR_DISCOVERY_INTERVAL
+        S->>DB: ListAllUsers() [un-RLS'd]
+        loop per user
+            S->>DB: GetAutoSummarize(userID)
+            S->>YT: ListSubscriptions + NewVideos
+            Note over S,DB: auto: skip videos published before<br/>TAPIR_AUTO_SUMMARIZE_WINDOW (ADR-020);<br/>older ones listed, await manual request
+            Note over S,YT: WaitFetchGate(ctx) throttles<br/>all fetches to TAPIR_FETCH_RATE
+            alt transcript available
+                S->>LLM: Summarize
+                S->>DB: Deliver(summary)
+            else 429
+                S->>DB: SetTranscriptStatus(rate_limited)
+            end
+        end
+    end
+```
+
+**Single-replica constraint (load-bearing).** The scheduler lives in the web process;
+`replicas: 1` in the k3s deployment manifest is not cosmetic — running `tapir serve` at
+>1 replica makes every replica run the full discovery loop, causing every registered user
+to be fetched in parallel from the same egress IP (429s + duplicate work). Do not scale
+`serve` past 1 replica without first moving discovery to a k8s CronJob or adding leader
+election. The process logs a `Warn` at startup when scheduled discovery is enabled as a
+reminder.
+
+---
+
+## Process-wide timedtext rate gate
+
+**`internal/adapters/youtube/gate.go`** (ADR-014 item 2): a single `rate.Limiter`
+(`golang.org/x/time/rate`) shared across **all** Adapter instances. Every `httpDo` call for
+a caption fetch passes through `WaitFetchGate(ctx)` before hitting YouTube. This serialises
+the scheduler loop AND the web click-path through the same per-egress-IP budget. Configured
+via `TAPIR_FETCH_RATE` (Go duration, default `2s`). Setting it to `0` disables the gate
+(dev/tests only).
+
+This is the precondition that makes scheduled auto-summarize safe: without the gate, a
+multi-user scheduler pass could fire many concurrent timedtext requests from the same IP
+within seconds, triggering 429s for all users.
+
+### Two-path summarisation model
+
+Both paths share `globalFetchGate` — rate limiting is **respected in both**, not routed around.
+
+| Path | Trigger | Order | Rationale |
+|------|---------|-------|-----------|
+| **Foreground** | User clicks "Summarize" on any non-summarized card (`POST /v/{id}/retry-now` for rate-limited; `POST /v/{id}/summarize` for pending) | Single chosen video | On-demand value: user picks a specific video to read now — bypasses the recency bound |
+| **Background batch** | Scheduled discovery pass every `TAPIR_DISCOVERY_INTERVAL` | **Newest-first across all channels** (see below), **bounded to the recency window** (ADR-020) | Onboarding prioritisation within bounded load: recent videos auto-fill; the older back-catalogue stays on-demand |
+
+The rationale for both paths is **onboarding prioritisation under an honest, bounded load** — a
+new user gets summaries of their most recent videos automatically, while the older back-catalogue
+is listed but summarised only on demand, so it never re-drives the shared rate gate every cycle.
+
+### Newest-first batch ordering (ADR-018)
+
+Within each scheduled pass, `RunOnce` uses a three-phase structure:
+
+1. **Discover + persist**: walk all channels, `UpsertVideo` every candidate (so it appears in
+   the list), apply pre-filters (seen/manual/backoff/**recency**), collect surviving candidates.
+   The recency pre-filter (ADR-020) drops auto-mode videos published before
+   `now - TAPIR_AUTO_SUMMARIZE_WINDOW` unless they are explicitly requested; an undated video is
+   never aged out. They remain persisted/listed — only auto-summarisation is skipped.
+2. **Sort**: order candidates `published_at DESC, NULLS LAST, discovery_pos ASC`. Videos with
+   no publish date (schema 001: nullable) sort after all dated content. The sort is in-memory
+   (`slices.SortStableFunc`) — at current scale this is fine.
+3. **Process**: feed candidates to the engine in sorted order through `globalFetchGate`.
+
+Before (per-channel inline): `[chanA-old, chanA-mid, chanB-new, chanB-null]`
+After  (newest-first):       `[chanB-new, chanA-mid, chanA-old, chanB-null]`
+
+The set of *processed* videos now also excludes auto-mode back-catalogue beyond the recency
+window (those stay listed, summarised on demand); within the processed set, only order changes.
+
+---
+
 ## Sequence — core use case: new video summarized
 
 ```mermaid

docs/data-model.md

@@ -10,12 +10,15 @@ only opaque references to them; the secret material lives in ESO/1Password (ADR-
 
 ## Design decisions baked into this model
 
-- **Per-user isolation, not a shared global video table.** The earlier draft proposed a
-  global `videos`/`transcripts` table deduped across tenants. Rejected for Future B: it
-  reintroduces exactly the cross-domain coupling the homelab architecture review is
-  removing, and at 1–5 users the cost of occasionally re-summarizing the same video is
-  trivial compared to the isolation it would cost. Each user's data is self-contained.
-  (Revisit only if Future C makes GPU/transcription cost dominate — a new ADR, not a default.)
+- **Per-user isolation for everything except transcripts.** The earlier draft proposed a
+  global `videos`/`transcripts` table deduped across tenants. **Videos** stay per-user and
+  RLS-scoped — a shared video table reintroduces exactly the cross-domain coupling the homelab
+  architecture review is removing. **Transcripts**, however, are now shared (ADR-021): keyed by
+  `(provider, provider_video_id)`, no `user_id`, **not** RLS-scoped. The cost avoided there is
+  not LLM re-summarization but a rate-gated, reputation-risky caption fetch (ADR-010/014), which
+  is paid per re-fetch regardless of user count — so persisting public caption content once and
+  sharing it strictly beats the coupling it removes. Everything else each user owns is
+  self-contained; `rls_test.go` proves transcripts is the single exception.
 - **Secrets by reference only.** Tables hold a `secret_ref` (opaque string/UUID resolved via
   the `SecretStore` port), never tokens or keys.
 - **The brain sink is just a delivery target.** No brain-specific tables. Whether a summary
@@ -23,7 +26,7 @@ only opaque references to them; the secret material lives in ESO/1Password (ADR-
 
 ## Entities
 
-Solid entities below are **persisted today** (migrations 001–006). `AI_CREDENTIAL` and
+Solid entities below are **persisted today** (migrations 001–013). `AI_CREDENTIAL` and
 `SUBSCRIPTION` are **planned, not yet a table** — kept in the model for intent; see the notes.
 
 ```mermaid
@@ -34,14 +37,15 @@ erDiagram
     USER ||--o{ AI_CREDENTIAL : "has (planned)"
     VIDEO_CONNECTION ||--o{ SUBSCRIPTION : "exposes (planned)"
     SUBSCRIPTION ||--o{ VIDEO : "produces (per user)"
-    VIDEO ||--o| TRANSCRIPT : "has at most one"
+    VIDEO }o--o| TRANSCRIPT : "shares one by (provider, provider_video_id) — not FK (ADR-021)"
     VIDEO ||--o| SUMMARY : "has at most one"
     SUMMARY ||--o{ SINK_DELIVERY : "delivered via"
+    USER ||--o{ CHANNEL_ERROR : "reports unavailable channels"
 
     USER {
         uuid id PK
         text display_name
-        bool auto_summarize "default false -> manual mode out of the box (migration 006)"
+        bool auto_summarize "default true for new users (migration 011, ADR-018)"
         timestamptz created_at
     }
     USER_IDENTITY {
@@ -87,14 +91,16 @@ erDiagram
         text url
         bool summarize_requested "default false -> manual-mode queue flag (migration 006)"
         timestamptz seen_at
+        text transcript_status "none|rate_limited|fetched (migration 007)"
+        timestamptz rate_limited_at "backoff clock for 429 retries (migration 007)"
     }
     TRANSCRIPT {
-        uuid video_id PK_FK
-        uuid user_id FK
+        text provider PK "part of shared key (ADR-021)"
+        text provider_video_id PK "part of shared key — the cross-user dedup key"
         text source "captions | none"
         text language
         text content "null when source = none"
-        timestamptz resolved_at
+        timestamptz fetched_at
     }
     SUMMARY {
         uuid id PK
@@ -123,21 +129,31 @@ erDiagram
         text action "watched | skipped | saved"
         timestamptz acted_at
     }
+    CHANNEL_ERROR {
+        uuid user_id FK
+        text channel_id
+        text channel_name
+        timestamptz first_seen
+        timestamptz last_seen
+    }
 ```
 
 `SUMMARY_ACTION` has `UNIQUE (user_id, video_id, action)`; `VIDEO_CONNECTION` has
 `UNIQUE (user_id, provider)` (one connection per provider — reconnect upserts in place).
 RLS (`ENABLE` + `FORCE`) is on **every solid user-owned table above** — `users`, `videos`,
-`transcripts`, `summaries`, `summary_actions`, `video_connections`. `sink_deliveries` is
-RLS'd via an `EXISTS` on its parent summary; `user_identities` is intentionally **not** RLS'd
-(auth plumbing). See the *Isolation invariant* section for the mechanism.
+`transcripts`, `summaries`, `summary_actions`, `video_connections`, `channel_errors`.
+`sink_deliveries` is RLS'd via an `EXISTS` on its parent summary; `user_identities` is
+intentionally **not** RLS'd (auth plumbing). See the *Isolation invariant* section for the
+mechanism.
 
 ## Notes per entity
 
 - **USER** — one row per registered user (Stage 1, ADR-012; no longer single-row). The Tapir-side
   profile; the Dex identity is held separately in `USER_IDENTITY`, not on this row. `auto_summarize`
-  (migration 006) is the per-user mode flag: `FALSE` (default) = manual, `TRUE` = auto-summarize
-  every new video.
+  (migration 006) is the per-user mode flag: `TRUE` = auto-summarize new videos **published within
+  the recency window** (`TAPIR_AUTO_SUMMARIZE_WINDOW`, default ~7d, ADR-020); older videos are
+  listed but summarised on demand. Default is **true** for new users (migration 011, ADR-018);
+  existing rows were back-filled via migration 012 with RLS bypass.
 - **USER_IDENTITY** (migration 004) — the `dex_subject → user_id` map. `dex_subject` is the PK,
   `user_id` a `UNIQUE` FK to `users` with `ON DELETE CASCADE`. This is the bridge resolved at login
   *before* a `user_id` is known, so it is **deliberately not RLS-enabled** (it holds no user data;
@@ -157,8 +173,15 @@ RLS'd via an `EXISTS` on its parent summary; `user_identities` is intentionally
   decision. The same video seen by two users is two rows. `seen_at` is when Tapir detected it.
   `summarize_requested` (migration 006) is the manual-mode queue flag: the web "Summarize" button
   sets it `TRUE`; the next `tapir run` picks it up, summarizes, and clears it back to `FALSE`.
-- **TRANSCRIPT** — at most one per video. `source = none` records "checked, no usable
-  transcript" so the watcher doesn't reprocess (ADR-007). `content` null in that case.
+  `transcript_status` and `rate_limited_at` (migration 007) track caption-fetch outcomes for
+  rate-limit backoff: `NULL` = not attempted; `rate_limited` = 429 seen, skip until
+  `NOW() - rate_limited_at > TAPIR_FETCH_BACKOFF`; `fetched` = resolved; `none` = no transcript.
+- **TRANSCRIPT** — shared public caption content, one row per `(provider, provider_video_id)`,
+  **not** RLS-scoped and carrying no `user_id` (ADR-021). Two users who watch the same video
+  share the one row; the summarize path reads it before any caption fetch, so re-analysis never
+  re-touches YouTube (ADR-010/014). `source = none` records "checked, no usable transcript" so
+  no one reprocesses (ADR-007); `content` null in that case. A transient 429 is never stored
+  here — it stays a per-user retry via `VIDEO.transcript_status`.
 - **SUMMARY** — at most one per video. `fallback_used` + `ai_provider`/`ai_model` make the
   "is local good enough?" question queryable (the Stage 0 quality signal). `highlights`/
   `takeaways` as jsonb to stay schema-flexible while the output format settles.
@@ -170,6 +193,12 @@ RLS'd via an `EXISTS` on its parent summary; `user_identities` is intentionally
   save) — the column that makes the Stage-0 headline metric ("acts on ≥1 summary") queryable
   (ui-spec.md §5, ADR-011). `video_id` is `TEXT` and **not** FK-constrained, mirroring summaries'
   standalone `(user_id, video_id)` key. `UNIQUE (user_id, video_id, action)`. FORCE RLS'd.
+- **CHANNEL_ERRORS** (migration 013) — channels that returned HTTP 404 (deleted or private) on
+  the most recent discovery pass. Upserted per scheduler pass (`last_seen` refreshed each run);
+  surfaced on the account page as a warning. Cascades on user deletion. Primary key is
+  `(user_id, channel_id)`. FORCE RLS'd.
+- **LOGIN_EVENTS** (migration 010) — throttled one-row-per-(user, date) login stamp. Used by the
+  Stage-0 gate query (VISION §Stage 0: "returned and used in ≥2 distinct weeks").
 
 ## Isolation invariant (Stage 1+) — LIVE
 
@@ -180,8 +209,9 @@ enforcement dormant); **ADR-012 opened Stage 1 and turned enforcement on in the
 Enforcement is **Postgres Row-Level Security** (migration `003_rls.up.sql`):
 
 - RLS is `ENABLE`d **and** `FORCE`d on every user-owned table — `users`, `videos`,
-  `transcripts`, `summaries`, `summary_actions`, `video_connections`. `FORCE` is load-bearing:
-  the app connects as the table **owner** (`tapir` role), and owners bypass RLS unless forced.
+  `transcripts`, `summaries`, `summary_actions`, `video_connections`, `channel_errors`.
+  `FORCE` is load-bearing: the app connects as the table **owner** (`tapir` role), and owners
+  bypass RLS unless forced.
 - Each policy keys off the per-request GUC `tapir.current_user_id`, set transaction-locally by
   the store's `withUser` helper via `set_config('tapir.current_user_id', $1, true)` — it
   auto-resets on commit/rollback, so it never leaks across a pooled connection.
@@ -208,7 +238,8 @@ queue, doesn't replace it). Deferred until there's a reason.
 
 ## Explicitly out of scope (Future C)
 
-- Global cross-tenant video/transcript dedup (rejected above).
+- Global cross-tenant *video* dedup (rejected above). Note: cross-tenant *transcript* sharing
+  is now in scope and shipped (ADR-021); only the videos half stays per-user.
 - Sharding / per-tenant physical databases.
 - Soft-delete + full audit trail on connections/credentials (a Stage 2 hardening item; add
   via ADR when Stage 2 work starts).

docs/homelab-integration.md

@@ -2,7 +2,7 @@
 
 The concrete endpoints, conventions, and identifiers Tapir depends on, so an independent
 session doesn't have to rediscover them. **Verify anything marked "confirm" before relying on
-it** — endpoints and aliases drift, and this file is a snapshot (2026-06-02), not a live source.
+it** — endpoints and aliases drift, and this file is a snapshot (2026-06-06), not a live source.
 
 ## Local AI (the Primary in `llm.Router`)
 
@@ -27,6 +27,28 @@ it** — endpoints and aliases drift, and this file is a snapshot (2026-06-02),
   `iguana/deepseek-r1-14b`) is preferred for summary quality if its latency/output is acceptable.
   The `max_tokens` fix below means thinking models no longer return empty content, so they are now
   viable choices, not blocked ones. Do not assume a coder alias is right for prose.
+- **Summarizer fallback chain (ADR-022).** The primary alias is the *first* of an ordered chain;
+  on failure or unparseable output the summarizer advances to the next model. All reached through
+  the same gateway by alias.
+  - `TAPIR_FALLBACK_MODEL` — local fallback. **Default `koala/phi4-14b`.** Empty disables it.
+  - `TAPIR_CLOUD_FALLBACK_MODEL` — worst-case EXTERNAL fallback. **Default `berget/mistral-small`.**
+    **Set this empty (`""`) for any client/NDA deployment** so content never leaves the local
+    stack — the chain then contains only local endpoints.
+  - `TAPIR_SUMMARY_MAX_TOKENS` — per-summary completion budget. **Default `1500`.** Small on
+    purpose: with the old 8192 budget, prompt + completion overflowed `phi4-mini`'s 8k window.
+  - `TAPIR_MAX_TRANSCRIPT_CHARS` — transcript truncation budget sent to the model. **Default
+    `18000`** (~fits an 8k-context model). `0` disables truncation. Prevents the context-overflow
+    HTTP 400 a long transcript caused on `phi4-mini`.
+- **Discovery low-value filter (ADR-023).** `TAPIR_MIN_VIDEO_SECONDS` — **default `60`**. At
+  discovery, `NewVideos` enriches candidates with one cheap `videos.list` call (quota API, NOT
+  the timedtext 429 path) and drops videos shorter than this plus any live/upcoming broadcast,
+  so the scarce caption-fetch budget isn't spent on Shorts. `0` disables the filter. The
+  paste-a-URL path is never filtered.
+- **Per-channel caption memory (ADR-024).** `TAPIR_CHANNEL_CAPTIONLESS_THRESHOLD` — **default
+  `5`** consecutive no-caption results before a channel is suppressed (its videos listed but not
+  caption-fetched). `TAPIR_CHANNEL_CAPTIONLESS_WINDOW` — **default `336h`** (14d) suppression
+  before one video is re-probed. `THRESHOLD=0` disables. A successful fetch resets the channel;
+  a 429 does not count; an explicit manual request bypasses suppression.
 - **Thinking models need an explicit `max_tokens`.** qwen3 / deepseek-r1 spend the budget on
   reasoning and return **empty content** if `max_tokens` is too low (or unset). The summarizer's
   parser treats an empty summary as an error for exactly this reason. **Done (2026-06-02, Worker F):**
@@ -160,7 +182,7 @@ allow per-provider when a user connects one.
 
 ---
 
-_Snapshot date 2026-06-02. Items marked **confirm** were not verified to a pinned source at
+_Snapshot date 2026-06-06. Items marked **confirm** were not verified to a pinned source at
 snapshot time — check brain or the live cluster before depending on them._
 
 ## Stage 1 — multi-user facts (verified 2026-06-03)
@@ -191,3 +213,28 @@ snapshot time — check brain or the live cluster before depending on them._
 - `user_identities(dex_subject → user_id)` table is **intentionally NOT RLS-enabled**
   (it's auth plumbing, holds no user data; data isolation is on the user-owned tables).
   All data access after subject resolution goes through `withUser`.
+
+## Scheduled discovery (ADR-018, verified 2026-06-05)
+
+`tapir serve` runs discovery for **all users** in-process on a timer (no CronJob). Three env
+knobs plus one load-bearing deployment constraint:
+
+- `TAPIR_DISCOVERY_INTERVAL` — Go duration, e.g. `2h`. The cadence the serve process runs a
+  discovery pass for every registered user (run-once-on-startup, then every interval).
+  **Unset or `0` = disabled** (dev/tests never auto-fetch).
+- `TAPIR_FETCH_RATE` — Go duration, default `2s`. The **process-wide per-egress-IP caption-fetch
+  rate gate** (ADR-014 item 2). Every caption fetch — scheduler runners *and* the web "Summarize"
+  click-path — serialises through this one limiter so the pod cannot collectively trip 429s. `0`
+  = unlimited (dev/tests). This is the precondition that makes auto-summarize-on-a-schedule safe;
+  do not raise it aggressively without watching for 429s.
+- `TAPIR_FETCH_BACKOFF=4h` — per-video rate-limit retry window; default `1h`. A video that
+  returns HTTP 429 on a caption fetch is skipped for this duration before being retried. The
+  scheduler checks `NOW() - rate_limited_at > TAPIR_FETCH_BACKOFF` before attempting to fetch
+  a video marked `transcript_status = rate_limited`. Longer values reduce 429 pressure at the
+  cost of slower recovery after a throttling episode.
+- **SINGLE-REPLICA WARNING (load-bearing).** The scheduler lives in the web process, so
+  `replicas: 1` in the deployment manifest is load-bearing: running `tapir serve` at >1 replica
+  makes **every** replica run the discovery loop → every user fetched in parallel from the same
+  egress IP (429s + duplicate work). Do **not** scale `serve` past 1 replica without first moving
+  discovery to a k8s CronJob or adding leader election. The process logs a `Warn` at startup when
+  scheduled discovery is enabled, as a reminder.

docs/specs/newest-first-ordering.md

@@ -0,0 +1,77 @@
+# Spec — Newest-first batch ordering + honest "Try now" / prioritisation docs
+
+> **Extended by ADR-020 (2026-06-08).** This spec covers the *batch processing* order within a
+> pass. ADR-020 adds (a) a recency pre-filter — auto mode skips videos published before
+> `TAPIR_AUTO_SUMMARIZE_WINDOW`, listed but summarised on demand — and (b) the same
+> `published_at DESC NULLS LAST` ordering on the **list read** (`ListVideos`), which previously
+> sorted by `seen_at`. See `DECISIONS.md` ADR-020.
+
+**Repo:** tapir · **Size:** small · **Solo session.**
+
+**Why.** Product intent (maintainer, 2026-06-06): a new user should get summaries of their
+**newest** videos quickly, while the older back-catalogue fills in behind — all within the one
+shared rate gate. Today the foreground path ("Try now" button) lets a user hand-pick a video,
+but the **background batch processes in subscription/channel order, not newest-first** — so a new
+user with a large candidate set sees the batch summarise whatever channel is first in their
+subscription list, not their newest videos. This slice makes the batch agree with the intent, and
+fixes the docs to describe the real rationale (onboarding prioritisation), not the
+traffic-disguising framing a prior session wrote.
+
+Read `CLAUDE.md` + `DECISIONS.md` (ADR-014, ADR-018) first. TBD, conventional commits,
+`task check` green per commit, `templ generate` if views change.
+
+## 1. Newest-first batch ordering (the build)
+In `internal/runner/runner.go` `RunOnce`: today the loop processes each video inline while
+walking subscriptions channel-by-channel (`for sub → NewVideos → for v → process`). Change so
+that, within a pass, **candidates are processed newest-first across ALL channels**:
+- Collect the candidate videos across channels first (after dedup/seen/manual/rate-limit
+  filtering as today), then **sort by `published_at` descending before processing**, then process
+  in that order through the engine + shared `globalFetchGate`.
+- **`published_at` is nullable** (schema 001). Sort **NULLS LAST** — videos with no publish date
+  must not jump ahead of dated newest videos. Decide a stable tiebreak (e.g. `seen_at DESC`) for
+  equal/again-null dates.
+- Keep all existing behaviour: per-item failure isolation, the rate-limit backoff skip, manual
+  mode, channel-unavailable handling, stats. Ordering is the only change — not what gets
+  processed, just the order.
+- At 868 candidates a collect-then-sort in memory is fine; do **not** build a streaming/external
+  sort. Keep it simple.
+- The shared rate gate (`globalFetchGate`) is unchanged and still governs fetch pacing — ordering
+  does not bypass or weaken it.
+
+**Optional (only if cheap and clearly correct):** a soft cap so the *first* pass for a brand-new
+user summarises the newest N (e.g. 20) quickly and defers the long tail to subsequent passes — so
+onboarding value lands fast without waiting for the whole sorted set. If this adds real
+complexity, SKIP it and just do the newest-first ordering; the ordering alone delivers the intent.
+
+## 2. Tests
+- Given candidates across multiple channels with mixed `published_at` (incl. some NULL), assert
+  the processing order is newest-first, NULLS LAST, with the chosen tiebreak. Use the existing
+  fake VideoStore/Processor pattern in `runner_test.go`.
+- Assert ordering does not change *which* videos are processed vs. today (same set, new order).
+- Rate-gate / backoff / manual-mode behaviour unchanged (existing tests stay green).
+
+## 3. Docs — describe the REAL rationale (replace prior framing)
+The "Try now" button and the discovery batch together implement **onboarding prioritisation**:
+foreground (user-clicked "Try now") summarises a specific video on demand; background batch
+summarises newest-first; both honour the shared rate gate. **Update the docs to state this intent
+— and explicitly REMOVE/replace any framing that describes "Try now" as making traffic "look
+organic to YouTube" or evading rate limits.** That is not the rationale. The rationale is: *get
+the user a few summaries of their newest, most relevant videos fast; process the back-catalogue in
+the background; always within the honest shared rate limit.* Rate limiting is **respected**, not
+evaded.
+- `docs/ui-spec.md`: "Try now" = on-demand foreground summarisation of a chosen (typically newer)
+  video; rationale = fast onboarding value, not traffic shaping.
+- `docs/architecture/architecture.md`: document the two-path model — foreground on-demand vs.
+  background newest-first batch, both through `globalFetchGate` — and the newest-first ordering.
+- Any requirements/use-case doc mentioning discovery order: state newest-first.
+- If a brain note or `wiki` entry captured the "looks organic" rationale, correct it there too.
+
+## Boundaries
+- Do NOT increase fetch rate or weaken the rate gate. Account-safety constraint stands: the
+  caption endpoint is unofficial (ADR-010) and must be treated with honest backoff, never evasion.
+- Do NOT touch RLS, credentials, or the Dex surface.
+- Ordering change is within a pass only — no persisted priority queue, no new table.
+
+## Out of scope
+Per-user configurable ordering; priority weighting beyond newest-first; the soft-cap if it proves
+non-trivial.

docs/specs/scheduled-discovery.md

@@ -0,0 +1,92 @@
+# Spec — In-process scheduled discovery + auto-summarize + rate-gate finish
+
+> **Extended by ADR-020 (2026-06-08).** Auto-summarize is no longer "every unseen video": the
+> scheduler now skips videos published before `TAPIR_AUTO_SUMMARIZE_WINDOW` (default ~7d) unless
+> explicitly requested, so a back-catalogue does not re-drive the rate gate every cycle. See
+> `DECISIONS.md` ADR-020.
+
+**Repo:** tapir · **Size:** medium · **Solo session** (not a swarm).
+
+**Why this exists.** The Stage-0 gate ("me or a friend returns and reads/acts in ≥2 separate
+weeks") cannot be met because the system is not usable *unprompted*: discovery (`tapir run`) is
+host-side manual, so a newly onboarded user sees an empty list and never comes back. This slice
+makes Tapir watch on its own — the thing that makes the gate experiment actually runnable.
+
+Read `CLAUDE.md` + `DECISIONS.md` (esp. ADR-012, ADR-014, and the new ADR-018) first. TBD —
+commit directly to `main`, one logical change per commit, conventional commits, `task check`
+green before each commit. `templ generate` if any view changes.
+
+## Decisions already made (do not reopen)
+- **In-process scheduler**, NOT a k8s CronJob (maintainer's call: simpler deploy, acceptable
+  coupling at 3 users). The known cost — discovery shares the web process's lifetime and egress
+  — is accepted and recorded in ADR-018.
+- **Auto-summarize ON** for the maintainer + onboarded friends (zero-friction: the list fills
+  and summarizes itself).
+- **Gate clock resets** to when this ships (ADR-018) — until unprompted use is possible, the
+  prior window measured nothing.
+
+## 1. In-process scheduled discovery (core)
+- In `tapir serve` startup, launch a background goroutine that runs discovery for ALL users on
+  an interval: env `TAPIR_DISCOVERY_INTERVAL` (Go duration, e.g. `2h`). **Unset or 0 = disabled**
+  (so dev/tests never auto-fetch).
+- **Reuse the existing `runner.Runner` + `Loop`/`RunOnce`. Do NOT write a new scheduler.** The
+  per-user Runner already exists; the new work is **iterating users** and running one pass each
+  per tick. Enumerate users from the un-RLS'd `user_identities` (the same enumerate-then-act
+  pattern the login_events gate query established), then run each user's pass **inside that
+  user's RLS scope** (`withUser`).
+- **Stateless timing:** run-once-on-startup, then every interval — exactly the existing `Loop`
+  shape. Do NOT persist schedule state; a pod restart just restarts the cycle. Acceptable at this
+  scale. Do not build cron-in-Go.
+- **Graceful shutdown:** the goroutine respects `ctx` cancellation so a pod term doesn't wedge.
+- **Failure isolation in the loop:** one user's pass failing (or one channel/video) must not
+  abort the other users or crash `serve` — log and continue. (RunOnce already collects per-item
+  errors; preserve that at the per-user level too.)
+
+## 2. Auto-summarize default ON for Future-B users
+- New registrations default `auto_summarize = true` (so onboarded friends get zero-friction);
+  keep the account-page toggle so a user can switch to manual. One-off update existing user rows
+  to `true` as well (maintainer + any current users).
+- Consequence (intended): scheduled discovery both discovers AND summarizes new videos — which
+  is the point, and is why §3 is mandatory in the same slice.
+
+## 3. Finish/confirm the ADR-014 shared per-egress-IP rate gate (NOW load-bearing)
+- In-process scheduling + auto-summarize + multiple users = all caption fetches leave the **one
+  web pod's egress IP**, concurrently with any live "Summarize" button clicks. The timedtext
+  endpoint rate-limits per IP (ADR-010/014). Without a shared gate this self-inflicts 429s every
+  cycle.
+- **Confirm in code whether ADR-014 item 2 (a single PROCESS-WIDE rate gate) exists.**
+  Reconciliation flagged it as possibly built only as per-*video* backoff. If it is not a
+  process-wide gate, **build it now**: ONE shared limiter (token-bucket / min-interval) that
+  every timedtext/caption fetch passes through — scheduler loop AND click-path alike. Per-process,
+  not per-user, not per-video.
+- Keep the existing per-video 429 backoff (`rate_limited_at` + retry window) — complementary: the
+  gate prevents tripping 429; the backoff handles it if one still happens.
+- Honest UX (ADR-014 item 3) still applies: a fetch waiting on the gate shows "queued/waiting",
+  never a stuck spinner.
+
+## 4. Gate-clock reset — already recorded in ADR-018; verify VISION reflects it
+- ADR-018 (committed) resets the Stage-0 3–4 week window to start when this ships, and revises the
+  check-in date. VISION Stage 0 carries a pointer to it. The build doesn't re-decide this; just
+  ensure nothing in docs still implies the clock started earlier.
+
+## Tests
+- **Scheduler:** fake clock + fake Runner → N users each get one pass per tick; one user's failure
+  doesn't stop the others; `ctx` cancel stops the loop; interval=0 disables it entirely.
+- **Rate gate:** concurrent fetches (scheduler + simulated click) are serialized/limited through
+  the ONE gate — assert max-in-flight / min-interval honored regardless of caller.
+- **Auto-summarize default:** new registration → `auto_summarize = true`; account-page toggle
+  still flips it.
+
+## Out of scope / known constraints
+- No CronJob / k8s objects (in-process chosen).
+- **SINGLE-REPLICA ASSUMPTION (load-bearing).** In-process scheduling means if `tapir serve` ever
+  runs >1 replica, every replica runs the discovery loop → every user fetched in parallel (429s +
+  duplicate work). At 3 users this is single-replica, fine — but the build MUST note this
+  constraint in ADR-018 / deploy docs so a future scale-up doesn't silently double-run.
+- No persisted schedules, no multi-pod coordination.
+
+## Fallback if the session runs short
+Ship the scheduler with **auto-summarize OFF** (discovery only; manual Summarize button) until the
+process-wide rate gate (§3) is confirmed/built. NEVER ship auto-summarize-on-a-schedule without the
+gate — that combination self-inflicts 429s for every user every cycle. Auto-summarize ON is gated
+on §3 being done.

docs/specs/stage0-usage-measurement.md

@@ -0,0 +1,77 @@
+# Spec — Stage 0 usage measurement (login events)
+
+**Date:** 2026-06-03
+**Status:** Ready to build · **Repo:** tapir · **Size:** small (one migration + middleware + query)
+**Why:** The Stage 0 gate (VISION, ADR-016) is *return usage in ≥2 separate weeks*. `summary_actions`
+captures *acts* (watch/skip/save) but not *reads* — a friend who logs in weekly and reads summaries
+without clicking anything is invisible. For a **reading** product that is the most important signal.
+This adds the missing data so the gate is measurable as written. Solo session, not a swarm.
+
+Read `CLAUDE.md` + ADR-016 first. TBD, conventional commits, `task check` green before each commit.
+
+## Scope (resist sprawl — this is NOT analytics)
+
+A lightweight, append-only record of *when each user was active*, enough to answer
+"returned/read in ≥N distinct weeks". Not page-level events, not click tracking, not a funnel.
+
+### 1. Migration — `login_events` (append-only)
+```
+login_events (
+  id        UUID PK default gen_random_uuid(),
+  user_id   UUID NOT NULL,          -- per-user; RLS like every user-owned table
+  seen_at   TIMESTAMPTZ NOT NULL default NOW()
+)
+INDEX (user_id, seen_at)
+```
+- **RLS:** `FORCE ROW LEVEL SECURITY`, same policy/pattern as the other user-owned tables (the
+  `tapir.current_user_id` GUC via the `withUser` seam — match migration 003). A reporting query that
+  needs cross-user counts runs as the owner/maintainer outside the per-user scope, or via a dedicated
+  read — decide consistently with how existing admin-ish reads are done.
+- Append-only: no updates, no deletes except the user-delete cascade. **Add to the delete-account
+  cascade** (ADR-013) — `login_events` has no FK (mirrors `summary_actions`), so `DeleteUser` needs an
+  explicit delete for it, and the delete test must assert it's covered. *Do not forget this* — it's the
+  exact footgun the last delete work caught.
+
+### 2. Middleware — throttled stamp
+- In the authenticated request path (after `CurrentUserID` resolves, inside the registration-gated
+  app — NOT on `/welcome`/`/healthz`/`/auth`), record one `login_events` row **per user per day**
+  (throttle: skip if a row exists for this user with `seen_at` ≥ start-of-today). One insert per active
+  day, not per request — keeps the table small and the signal clean.
+- Throttle check must itself be RLS-scoped (`withUser`). Keep it cheap (indexed lookup).
+
+### 3. Query — the gate report
+Provide a query (and optionally a tiny `tapir report` CLI subcommand or an admin page — your call,
+CLI is fine) answering, per user:
+```sql
+-- distinct active weeks from reads (login_events) AND acts (summary_actions), unioned
+WITH weeks AS (
+  SELECT user_id, date_trunc('week', seen_at) AS wk FROM login_events
+  UNION
+  SELECT user_id, date_trunc('week', acted_at) FROM summary_actions
+)
+SELECT user_id, COUNT(DISTINCT wk) AS active_weeks
+FROM weeks GROUP BY user_id
+ORDER BY active_weeks DESC;
+```
+Gate passes when any user_id (maintainer or friend) reaches `active_weeks >= 2` within the window.
+
+## Honesty caveats to carry (from VISION/ADR-016)
+- **"Unprompted" is not measurable here.** login_events records *that* a user returned, not *why*. A
+  nudged return looks identical to an organic one. This build does not close that gap and must not
+  claim to — the VISION measurement note stands: count returns, read a nudged return as weaker signal.
+  (If prompt-tracking is ever wanted, that's a separate decision, not this build.)
+- **Data accrues from deploy onward.** The gate window's read-data starts when this ships — so ship
+  soon (maintainer's call) rather than batching with the infra tooling session.
+- **`date_trunc('week')` is ISO/timezone-sensitive** and noisy at low volume (N=3). Two visits days
+  apart can fall in the same or different weeks. Acceptable, but don't over-read a single-week-margin
+  pass/fail.
+
+## Out of scope
+Page/event analytics; prompt-vs-organic tracking; dashboards beyond the one gate query; anything
+touching the engine or sinks (this is web/store only — ADR-003 holds).
+
+## Tests
+- Migration up/down; RLS on `login_events` (extend the two-user isolation test to cover it).
+- Throttle: N requests same day → 1 row; next day → 2nd row.
+- `DeleteUser` removes the user's `login_events` and leaves others' intact (extend the delete test).
+- The gate query returns correct distinct-week counts across a seeded reads+acts fixture.

docs/specs/video-card-states.md

@@ -0,0 +1,77 @@
+# Spec — Unify video-card states: one "Summarize now" verb, honest no-captions state
+
+> **Superseded in part by ADR-020 (2026-06-08).** The five card states still hold, but the copy
+> changed: the nudge verb is now **"Summarize"** (not "Summarize now"), the rate-limited state
+> reads **"In queue"** (not "Fetching soon…"), and the queued state reads **"summarizing
+> shortly"** (not "waiting for the next run"). The list also now collapses older un-summarized
+> and caption-less videos. See `DECISIONS.md` ADR-020 and `views.templ` (`VideoCard`) for the
+> current copy; this doc is kept as the original design record.
+
+**Repo:** tapir · **Size:** small, **view-layer only** (`views.templ` + a little CSS in
+`view.go`; regenerate `views_templ.go`). No handler, store, or DB change. The two existing
+handlers (`/summarize`, `/retry-now`) stay exactly as they are — only what the card *shows*
+changes.
+
+**Why.** The video card today presents two different verbs — "Try now" (`.btn-retry`, on
+rate-limited videos) and "Summarize" (`.btn-secondary`, on pending videos) — for what the user
+experiences as one intent: *"summarize this video now."* The user doesn't know or care about the
+internal pipeline state (rate-limited vs. manual-queue); two differently-labelled, differently-
+styled buttons leak that state machine into the UI as a choice. Also: a **no-captions video
+(`TranscriptStatus == "none"`) currently falls into the `else` branch and wrongly shows a
+"Summarize" button** that, if clicked, tries and fails — there are no captions to fetch. That's
+the confusing dead-end to remove.
+
+In normal use the maintainer is in **auto mode**, so these buttons are *exceptions*, not the main
+path — videos summarize themselves. So the card should be **status-first**: the state is what the
+user reads constantly; the manual nudge is a small, quiet affordance for impatience, not a
+prominent call-to-action.
+
+## The honest per-state card model (footer of `VideoCard`)
+
+Restructure the footer branch in `VideoCard` (in `internal/web/views.templ`) to these states.
+The branch ORDER matters (summarized first, then terminal/no-action states, then actionable):
+
+1. **Summarized** — preview + provider chip + fallback badge + actions. **No button.** (unchanged)
+2. **No captions** (`r.TranscriptStatus == "none"`) — **NEW branch.** Quiet status text, e.g.
+   `No transcript available` (use a muted `.card-state`/`.chip-retry`-style treatment, NOT a
+   button). This is a terminal honest dead-end — the user can do nothing, so offer nothing.
+3. **Queued / requested** (`r.SummarizeRequested`) — "Queued · waiting for the next run". **No
+   button.** (unchanged)
+4. **Rate-limited** (`r.TranscriptStatus == "rate_limited"`) — quiet status (keep the
+   "fetching soon" sense) + a **quiet "Summarize now"** button POSTing to `retryNowURL` (clears
+   backoff then processes). Same quiet style as state 5.
+5. **Pending** (else — discovered, not yet attempted) — quiet "Not summarized" + a **quiet
+   "Summarize now"** button POSTing to `summarizeURL` (flips the queue flag then processes).
+
+## Unify the verb and the style
+- **One label everywhere a manual nudge is offered: "Summarize now"** (states 4 and 5). Drop the
+  "Try now" wording entirely.
+- **One quiet style** for both: use the understated `.btn-retry` pattern (small, pill, outline,
+  transparent bg) — NOT `.btn-secondary`/`.btn` (heavier). Rename the CSS class to something
+  state-neutral (e.g. `.btn-quiet` or `.btn-summarize-now`) so it no longer reads as
+  "retry"-specific; keep the same visual. The point: the nudge is subtle, status is primary.
+- Keep both `<form>`s posting to their respective existing handler URLs
+  (`retryNowURL` for rate-limited, `summarizeURL` for pending) with the existing HTMX
+  attributes (`hx-post`, `hx-target=#video-{id}`, `hx-swap=outerHTML`) — only the button
+  label/class change. The backend side-effect difference (clear-backoff vs. set-flag) stays
+  invisible to the user, which is correct.
+- Drop the engineer-facing `title="Fetch transcript now through the shared rate gate"` tooltip;
+  if a hint is wanted, make it user-facing ("Summarize this one now").
+
+## Quietness check (the design intent)
+The summary content and the per-state *status* are the card's primary information. The "Summarize
+now" button is a minor affordance. Do not make it a prominent solid-accent CTA — it must read as
+"you can nudge this if you're impatient", not "action required". Status text uses muted styling;
+the button uses the quiet outline style.
+
+## Tests
+- `videocard_internal_test.go` (exists): assert each of the 5 states renders the expected
+  footer — summarized (no button), no-captions (status, NO button, no `summarize`/`retry-now`
+  URL present), queued (no button), rate-limited ("Summarize now" → retry-now URL), pending
+  ("Summarize now" → summarize URL). The key new assertion: **a `none`-status video renders no
+  action button and no POST URL.**
+- Assert the label string "Try now" no longer appears anywhere in rendered output.
+
+## Out of scope
+Handler/DB changes; the detail-page action buttons (watched/skipped/saved — unrelated); the
+pipeline stats bar wording; auto/manual mode behaviour. Verb/label/style/no-captions-state only.

docs/ui-spec.md

@@ -72,7 +72,14 @@ summary_actions
   and join into the existing `SummaryRow` reads so list/detail show current state.
 - This column is what makes the Stage-0 metric ("did I act on a summary?") queryable.
 
-## 6. Auth (Dex OIDC, single-user authz)
+## 6. Auth (Dex OIDC)
+
+Authentication is delegated to the homelab OIDC provider at `TAPIR_OIDC_ISSUER` —
+**Authentik** since the Dex→Authentik migration (infra ADR-0001; ADR-019). It offers a
+Google upstream and Authentik-managed accounts (incl. its invite flow); Tapir no longer
+provisions accounts itself. Any authenticated subject can register a Tapir account
+(ADR-012: allowlist removed). The `oidc`/`DexAuth` package keeps its name for now (rename
+deferred, ADR-019).
 
 - **Flow:** standard Authorization Code. Use `coreos/go-oidc` + `golang.org/x/oauth2`
   (justify the deps in the commit; both are the homelab-standard OIDC libs and small).
@@ -92,7 +99,7 @@ summary_actions
 `TAPIR_OIDC_ISSUER` (`https://auth.d-ma.be`), `TAPIR_DEX_CLIENT_ID`, `TAPIR_DEX_CLIENT_SECRET`,
 `TAPIR_OIDC_REDIRECT_URL` (`https://tapir.d-ma.be/auth/callback`), `TAPIR_SESSION_SECRET`.
 Reuses existing `TAPIR_DB_DSN`, `TAPIR_USER_ID` (the StubAuth dev subject only). No secrets
-committed. (`TAPIR_ALLOWED_SUBJECT` was removed by ADR-012.)
+committed. (`TAPIR_ALLOWED_SUBJECT` was removed by ADR-012; use the keys above.)
 
 ## 8. Deployment — k3s + Flux GitOps
 
@@ -163,12 +170,13 @@ distinguishable.
 | **Registration gate** | A Dex subject with no `users` row is routed to `/register`, which creates the `users` row + a `user_identities` mapping. (§2 listed "sign-up / user CRUD" as a non-goal.) | Explicit registration is how a multi-user surface stays honest — no just-in-time row creation. | ADR-012; `f396e01` |
 | **Per-user YouTube web connect** | `/oauth/youtube/connect` → `/oauth/youtube/callback` stores a per-user refresh-token ref + a `video_connections` row. (The spec assumed a host-side `tapir auth` only.) | Multi-user means each user connects their own account from the browser. | ADR-006, ADR-012; migration 005 (`0c9531a`, `2aad79b`) |
 | **Account management** | `/account` page with **disconnect** and **delete account**; delete removes only Tapir-side state and leaves the Dex identity intact. (§2 listed isolation/CRUD as non-goals.) | A real account needs a way out; deletion semantics are deliberately Tapir-side only. | ADR-013; `22eafcf`, `c7624d9`, `17d5e8c` |
-| **Immediate web summarization** | A "Summarize" button (`POST /v/{id}/summarize`) runs the engine in a background goroutine inside `serve`; the page HTMX-polls `GET /v/{id}/status`. (§2 said "triggering runs from the browser … do NOT build".) | Reading a list you can't act on is half a product; on-demand summarize closes the loop without waiting for a batch `tapir run`. | ADR-012, ADR-014; `25215cb`, `8c6c7ca` |
+| **Immediate web summarization** | A quiet "Summarize now" button on non-summarized video cards. Pending cards POST to `/v/{id}/summarize` (queues + triggers engine); rate-limited cards POST to `/v/{id}/retry-now` (clears backoff + triggers engine). Both use the same `.btn-quiet` style and label — the internal pipeline distinction is invisible to the user. The page HTMX-polls `GET /v/{id}/status` while processing. Videos with `TranscriptStatus == "none"` show "No transcript available" with no button — this is a terminal honest state. (§2 said "triggering runs from the browser … do NOT build".) | Reading a list you can't act on is half a product; on-demand summarize closes the loop without waiting for a batch `tapir run`. | ADR-012, ADR-014; `25215cb`, `8c6c7ca` |
 | **Charmbracelet tapir spinner** | An animated in-flight indicator (charm palette) shown while a summarize is processing; an honest "queued/waiting" state under rate-limiting rather than a stuck spinner. | The spinner must tell the truth when the timedtext endpoint rate-limits (429), not imply imminence. | ADR-014; `25215cb`, `a4aeb5e` |
-| **Auto/manual summarization mode** | Per-user `auto_summarize`; manual (default) lists new videos unsummarized and queues via `summarize_requested`; a mode toggle at `/account/summarize-mode`. | Control over compute/noise — only summarize what the user cares about. | migration 006 (`748d5eb`, `bdbdce7`, `3014ee0`, `a269d4a`) |
+| **Auto/manual summarization mode** | Per-user `auto_summarize`; manual lists new videos unsummarized and queues via `summarize_requested`; a mode toggle at `/account/summarize-mode`. Default is **true** for new users (migration 011, ADR-018); existing rows back-filled via migration 012. | Control over compute/noise — only summarize what the user cares about. | migration 006 (`748d5eb`, `bdbdce7`, `3014ee0`, `a269d4a`); migration 011/012 |
 | **Public landing page** | `/welcome` mounted **outside** the auth guard; unauthenticated `/` redirects there; logout returns there (not `/auth/login`). (The spec guarded everything except `/healthz` and `/auth/*`.) | A first-time visitor needs a public "what is this / get started" page before the login wall. | `d83943c`, `0fdf2f7`, `3a27bf1`, `d208110`, `8ca374e`, `f15f57f` |
-
-The original Stage-0 goals (read summaries, record watch/skip/save actions, Dex login, GitOps
-deploy) still hold — these are additions over that base, not replacements. The architecture
-stance is unchanged: every item above is web-surface or store work; the engine/ports/sinks core
-was not modified (ADR-003).
+| **Invite onboarding** | **Removed from Tapir (ADR-019).** Invites are owned by the IdP (Authentik) now, not Tapir — the Dex local-password provisioning path (`tapir invite` CLI, `/invite/{token}` web flow, `internal/adapters/dex`) was deleted when the homelab migrated Dex→Authentik (infra ADR-0001). A new user is invited via Authentik's invite flow, logs into Tapir via OIDC, and is captured by the existing `/register` (display-name) gate. | Onboarding belongs to the identity provider; keeps Tapir out of the shared identity provider's write path. | ADR-019; infra ADR-0001 |
+| **Summarized-only filter** | `?summarized=1` query param on the list view. When set, only videos with a completed summary (`SummaryRow.Summarized = true`) are shown. Rendered as a "Summarized only" checkbox in the filter form. Summarized videos also sort to the top of the unfiltered list (`ORDER BY (s.id IS NOT NULL) DESC, seen_at DESC`). | Lets users focus on videos that are ready to read; newly landing summaries are visible at the top without filtering. | `internal/web/view.go` (`Filter.OnlySummarized`, `ListVideos` ORDER BY) |
+| **"Summarize now" foreground path** | Unified quiet nudge button on actionable non-summarized cards. Five explicit card states — (1) summarized: chip + no button; (2) no captions (`transcript_status = 'none'`): "No transcript available", no button; (3) queued: "Queued" chip, no button; (4) rate-limited: "Fetching soon…" + "Summarize now" → `POST /v/{id}/retry-now` (clears `rate_limited_at`, triggers engine); (5) pending: "Not summarized" + "Summarize now" → `POST /v/{id}/summarize` (queues + triggers engine). One verb, one style (`.btn-quiet`); backend difference invisible to user. Both handlers call `ProcessVideo` through `globalFetchGate`. Rate gate respected, not bypassed — this is onboarding prioritisation. | Fast onboarding value; honest dead-end for no-captions videos (no button that fails). | `internal/web/handlers.go` (`handleRetryNow`, `handleRequestSummarize`); `internal/web/views.templ` (`VideoCard`) |
+| **Pipeline stats bar** | A one-line status bar above the video list: `N summarized · M fetching soon · K no captions`. Computed from the unfiltered row set; hidden when all videos are summarized. Gives the user a clear read on pipeline state without any interaction. | Replaces the "why is nothing happening?" confusion when most videos are pending or rate-limited. | `internal/web/view.go` (`PipelineStats`, `pipelineStats`) |
+| **Unavailable channels (account page)** | The `/account` page shows a "Unavailable channels" section when any channels returned HTTP 404 on the last discovery pass. Lists channel name, an "unavailable" badge, and the first-seen date. Data sourced from the `channel_errors` table (migration 013). | Surfaces silent failures so users know why some subscribed channels produce no new videos. | migration 013; `internal/web/account.go`; `internal/adapters/youtube/youtube.go` (`domain.ErrChannelUnavailable`) |
+| **Recency window + sparse-state honesty (ADR-020)** | Supersedes the copy/sort in the rows above. Auto-summarize is bounded to videos published within `TAPIR_AUTO_SUMMARIZE_WINDOW` (~7d); older un-summarized videos collapse behind a single "Show N older videos — summarize on demand" disclosure, and caption-less videos collapse to a one-line count (not N cards). List order is now `summarized-first, published_at DESC NULLS LAST`. Copy reframed for honest scarcity: pipeline bar reads "N ready · M in queue · K no captions" (no "fetching soon"); a gradual-fill note explains the rate limit; the nudge verb is "Summarize" (not "Summarize now"); the queued card says "summarizing shortly"; the empty-connected state drops the impossible `tapir run` instruction. Detail leads with Takeaways. Filters slimmed (no date pickers; hidden when empty); watched/skipped segmented; back link on detail; empty terms checkbox removed. | Make the sparse reality legible and honest instead of implying abundance/imminence; bound auto load so the back-catalogue doesn't re-drive the caption gate. Never fetch harder — scarcity is surfaced, not engineered around. | ADR-020; `2384c47`, `3df0459`, `40b703e`, `a1a5217`, `4a0a56e`, `9bf1c31`, `980638d`, `12fb031`, `f775441`, `51aa5d9` |

docs/use-cases/ai_routing.feature

@@ -31,5 +31,17 @@ Feature: Local-first AI with optional BYO fallback
     When any transcript is summarized
     Then my content is only ever sent to the local AI stack
 
-  # "Reliably" is operationalized as: Primary returned without error within timeout.
+  Scenario: A model returns unparseable output and the next endpoint succeeds
+    Given the local AI stack is available
+    But the primary model returns output that cannot be parsed into a summary
+    And a fallback model is configured
+    When a transcript is summarized
+    Then Tapir falls back to the next model in the chain
+    And the summary records fallback_used as true
+
+  # "Reliably" is operationalized as: an endpoint returned a PARSEABLE summary
+  # within timeout. A 200 with malformed JSON (or highlights emitted as a bare
+  # string) counts as a failure and advances the chain (ADR-022). Endpoints are
+  # tried in order, locals first, so the external worst-case model only ever sees
+  # content after every local endpoint has failed.
   # Quality scoring may be added later without changing these scenarios.

docs/use-cases/connect_account.feature

@@ -10,12 +10,26 @@ Feature: Connect and manage video accounts
     And my refresh token is stored only as a secret reference
     And my subscriptions are synced
 
+  @pending
+  # Vimeo connect is not built yet (provider label exists; no connect flow or test).
   Scenario: Connect a Vimeo account
     Given I have no connected video accounts
     When I connect my Vimeo account
     Then the connection is stored with status "active"
     And my subscriptions are synced
 
+  Scenario: Connecting an account discovers videos immediately
+    Given I have no connected video accounts
+    When I connect my YouTube account
+    Then a discovery pass for my account is triggered right away
+    And I do not have to wait for the next scheduled pass to see my videos
+
+  Scenario: Connecting summarizes my newest videos right away
+    Given I have no connected video accounts
+    When I connect my YouTube account
+    Then up to the onboarding cap of my newest videos are summarized through the rate gate
+    And the rest are left to the scheduled recency-bounded pass
+
   Scenario: Tokens are never stored in the clear
     When I connect any video account
     Then no OAuth token value is stored in the database
@@ -28,6 +42,9 @@ Feature: Connect and manage video accounts
     And no new videos are watched for that connection
     And my existing summaries remain readable
 
+  @pending
+  # Per-provider BYO credential config is not built as a web flow yet (the summarizer
+  # supports a fallback endpoint, but there is no user-facing BYO setup + its test).
   Scenario Outline: BYO AI credential is optional and per-provider
     When I configure a BYO provider "<provider>"
     Then the credential is stored only as a secret reference

docs/use-cases/landing_page.feature

@@ -19,6 +19,9 @@ Feature: Public landing page
     Then I see a link to my summaries
     And I see a way to log out
 
+  @pending
+  # Behaviour ships (logout redirects to /welcome) but is not unit-tested: logout lives in
+  # the OIDC Auth impl and StubAuth has no routes to exercise it cheaply.
   Scenario: Logging out returns to the welcome page
     Given I am logged in
     When I log out

docs/use-cases/paste_url.feature

@@ -0,0 +1,30 @@
+Feature: Paste a YouTube URL to summarize any video
+  As a user
+  I want to paste a YouTube link and get a summary
+  So that I can pull the specific video I want now, even from channels I don't follow
+
+  Scenario: Paste a valid YouTube URL
+    Given I am connected
+    When I paste a valid YouTube video URL
+    Then the video is added to my feed scoped to me
+    And it is queued for summarization through the shared rate gate
+
+  Scenario: Pasting an invalid link is rejected
+    When I paste something that is not a YouTube video URL
+    Then I get a clear error and nothing is added
+
+  Scenario: Pasting a video that cannot be found is honest
+    When I paste a URL whose video cannot be found
+    Then I am told it couldn't be found and nothing is added
+
+  Scenario: Pasting the same video twice does not duplicate it
+    Given I have pasted a video
+    When I paste the same video again
+    Then my feed still has exactly one entry for it
+
+  @pending
+  # Covered by the engine's ADR-010 no-transcript terminal state (degrade-never-error);
+  # there is no paste-specific test for it.
+  Scenario: A pasted video with no captions resolves honestly
+    When I paste a video that has no captions
+    Then it resolves to the "no transcript available" terminal state

docs/use-cases/registration.feature

@@ -34,6 +34,9 @@ Feature: Register and manage a multi-user account
     And the other user's data remains intact
     And my Dex identity is left intact
 
+  @pending
+  # Re-registration after delete is supported by design (delete leaves the Dex identity,
+  # ADR-013) but has no dedicated end-to-end test yet.
   Scenario: A deleted user can register again as a fresh account
     Given I deleted my Tapir account but my Dex identity still exists
     When I sign in again

docs/use-cases/summarize_mode.feature

@@ -6,15 +6,25 @@ Feature: Choose how new videos get summarized
   Background:
     Given I am a registered user with a connected video account
 
-  Scenario: Auto mode summarizes every new video
+  Scenario: Auto mode summarizes recent new videos automatically
     Given my summarization mode is "auto"
-    When a subscribed channel posts a new video with captions
+    When a subscribed channel posts a new video with captions within the recency window
     Then Tapir summarizes it without my asking
     And the summary appears in my list
 
-  Scenario: Manual mode is the default and leaves new videos unsummarized
-    Given I have not changed my summarization mode
-    Then my mode is "manual"
+  Scenario: Auto mode lists older videos without summarizing them
+    Given my summarization mode is "auto"
+    When discovery finds a video published before the recency window
+    Then the video appears in my list with no summary
+    And it is not summarized automatically
+    And I can still summarize it on demand with "Summarize"
+
+  Scenario: Automatic is the default for a new user
+    Given I have just registered
+    Then my summarization mode is "auto"
+
+  Scenario: Manual mode leaves new videos unsummarized
+    Given my summarization mode is "manual"
     When a subscribed channel posts a new video with captions
     Then the video appears in my list with no summary
     And nothing is summarized until I request it
@@ -30,3 +40,8 @@ Feature: Choose how new videos get summarized
   # auto_summarize is a per-user setting and summarize_requested is a per-video queue
   # flag (migration 006). The web button sets the flag; `tapir run` processes both the
   # auto videos and the manually queued ones, then clears the flag.
+  #
+  # Recency bound (ADR-020): in auto mode the scheduler only summarizes videos published
+  # within TAPIR_AUTO_SUMMARIZE_WINDOW (default ~7d); older videos are discovered and
+  # listed but wait for an explicit "Summarize" — so a back-catalogue does not re-drive
+  # the per-IP caption gate (ADR-014) every cycle. A manual request bypasses the bound.

docs/use-cases/summarize_new_video.feature

@@ -31,5 +31,16 @@ Feature: Summarize new videos from subscribed channels
     When the watcher sees "Designing for Attention" again
     Then Tapir does not produce a second summary for it
 
+  Scenario: Re-analyzing a stored video does not re-fetch its transcript
+    Given a transcript for "Designing for Attention" is already stored
+    When the video is summarized again
+    Then Tapir reads the stored transcript
+    And Tapir does not fetch captions from YouTube
+
   # Captions-first is the core path (ADR-007). Audio-download + speech-to-text is
   # deferred and intentionally has no scenario here yet.
+  #
+  # Transcript persistence (ADR-021): the stored transcript is shared, keyed by
+  # (provider, provider_video_id) and read before any caption fetch, so the
+  # re-analysis scenario above also covers paste-a-URL and the onboarding burst —
+  # both summarize through the same engine chokepoint.

docs/ux-review/UX-REVIEW-stage0-recency.md

@@ -0,0 +1,207 @@
+# Tapir — Heuristic Review (Stage-0, sparse + recency-bounded)
+
+_Findings document, not a build spec. The maintainer filters; a spec follows separately.
+Reviewed against `VISION.md` (Stage-0 gate), `docs/ui-spec.md`, `internal/web/views.templ` +
+`view.go`, the prior `UX-REVIEW.md` pass, and the current screenshots. Written for the product
+**as it actually is**: ~283 discovered, ~15 summarized, ~256 in queue behind a respected per-IP
+caption rate limit, ~12 no-captions; single-user (maintainer) with friends pending; recency-
+bounded auto-summarize about to ship (auto = recent ~7d, older browsable + manual on demand)._
+
+## Reviewer stance
+
+The Stage-0 gate is **return usage**. So every finding is judged by one question: does this make
+the maintainer (or a friend) come back to an honestly-sparse feed? The visual layer is already
+decent — dark mode, cards, the constrained reader were all fixed in the prior pass. The open
+problems are **expectation-setting, honesty-of-scale, and the recency feed** — not pixels.
+
+**The single biggest risk:** a new user connects, sees `15 summarized · 256 fetching soon`,
+nothing visibly moves, and never returns. The whole gate dies at that moment. Most P0s below
+attack that one moment.
+
+## Tagging
+
+- **`[NOW]`** — improves the product as it is today (sparse, recency-bounded, single-user). Ships
+  in the upcoming bundle.
+- **`[LATER]`** — improves the product we hope it becomes (abundance, engagement, multiple users).
+  Valuable but premature until real usage validates the core loop.
+
+Severity: 🔴 breaks the core loop · 🟠 hurts it · 🟡 noticeable · 🔵 polish.
+
+---
+
+## P0 — fix before/with the recency ship
+
+### 1. 🔴 Empty-connected state tells the user to run a CLI command they can't run — `[NOW]`
+**Problem.** After connecting YouTube, the empty list says: *"Run `tapir run` to discover your
+subscriptions."* A friend on the web has no shell. And post-ADR-018 discovery is an in-process
+scheduled loop — so the instruction is wrong *even for the maintainer*. It is the first thing a
+newly-onboarded user sees, and it is an impossible, stale instruction.
+**Principle.** Match between system and the real world; help users recognize, not be blocked
+(Nielsen #1, #2, #9).
+**Proposal.** Replace with a passive, honest "we're working" state: *"Your account is connected.
+Tapir is finding your subscriptions and fetching captions — summaries appear here gradually. Check
+back later."* No command. No imperative the user can't satisfy.
+**Evidence.** `views.templ` `summaryList` → `.empty-connected`.
+
+### 2. 🔴 No expectation set for *gradual* fill — the return loop breaks at the cliff — `[NOW]`
+**Problem.** Captions are rate-limited by design; the backlog trickles over days. Nothing tells
+the user this. A first visit shows few/no summaries and no "come back" framing. The Stage-0 gate
+is literally about returns, and the product never asks for one or explains why patience is
+warranted.
+**Principle.** Visibility of system status (#1). And: the gate can't be cleared if the UX doesn't
+survive first contact.
+**Proposal.** One honest sentence near the pipeline bar / empty state: *"Tapir fetches captions
+slowly on purpose, to respect YouTube's limits. New summaries land gradually — usually best to
+check back tomorrow."* Turns confusing emptiness into intentional design. Highest-leverage change
+in the review.
+
+### 3. 🟠 "256 fetching soon" overstates imminence — a lie of scale — `[NOW]`
+**Problem.** The pipeline bar and rate-limited cards both say "fetching soon." For 256 items
+behind a per-IP throttle, "soon" is false — they trickle over days/weeks. Exactly the abundance-
+implying language the mandate forbids, inverted: it makes the *queue* look imminent.
+**Principle.** Honesty of scarcity (project mandate); #1.
+**Proposal.** Relabel by scale. Bar: `15 ready · 256 in queue · 12 no captions`. Card state:
+"In queue" / "Waiting its turn", not "Fetching soon…". Reserve "soon" for items actually next.
+**Evidence.** `views.templ` `pipelineBar`; card State 4.
+
+### 4. 🟠 Recency boundary is invisible in the feed — `[NOW, ships with recency]`
+**Problem.** Once auto-summarize is bounded to ~7d, a 6-month-old pending video and a 2-day-old
+pending video render identically ("Not summarized" + button). But only one is in the auto path;
+the other will *never* process unless clicked. The user can't tell "be patient, this is coming"
+from "this is yours to trigger or ignore."
+**Principle.** Visibility of system status; predictability (#1).
+**Proposal.** Bucket the list into two sections: **Recent** (auto, will fill itself) and
+**Older — browse / summarize on demand**. Card status language should encode *which side of the
+line it's on*, not the pipeline internals. Central IA decision of the recency change.
+
+### 5. 🟠 The un-summarized mass buries the ~15 readable summaries — `[NOW]`
+**Problem.** ~268 of 283 cards are not readable (pending / queued / no-captions). Summarized-first
+ordering helps, but the page is still 95% noise below the fold. "Attention is the scarce resource"
+is the product's own principle — and the default view violates it.
+**Principle.** Aesthetic/minimalist design; signal-to-noise (#8).
+**Proposal.** Default view = readable summaries + the Recent bucket. Collapse the older
+un-summarized mass behind *"Show 256 older un-summarized videos."* Collapse the 12 no-caption
+videos into a single line: *"12 videos have no captions"* (terminal, never readable — they don't
+deserve 12 full cards).
+
+---
+
+## P1 — high, near-term
+
+### 6. 🟠 "Summarize now" overpromises against the rate gate — `[NOW]`
+**Problem.** Button says "Summarize now" (title: "Summarize this one now"). Backend queues it
+behind the shared per-IP gate. Click 10 older videos and they all sit at "Fetching soon…". The
+verb sells immediacy the system can't honor.
+**Principle.** Honesty; match system/reality (#1).
+**Proposal.** Drop "now" → "Summarize". On click the card should honestly become "Queued" (it
+already can). Optionally show queue position once the queue is real. Don't engineer the gate
+harder — just stop the verb from lying.
+**Evidence.** `views.templ` card States 4 & 5; `handlers.go` `handleRetryNow`,
+`handleRequestSummarize`.
+
+### 7. 🟠 Welcome-page copy is stale and misleading post-ADR-019 — `[NOW]`
+**Problem.** Landing sub-copy: *"If you have an invite link, it will set up your account
+automatically."* Invites moved to Authentik (ADR-019); Tapir no longer handles invite links. The
+"Get Started" button goes straight to OIDC. The copy promises a flow that no longer exists.
+**Principle.** Match between system and reality (#2); honesty.
+**Proposal.** Rewrite: *"Tapir is invite-only right now. If you've been invited, sign in below."*
+Single CTA. Also set the gradual-fill expectation here (ties to #2) so it lands before the wall,
+not after.
+**Evidence.** `views.templ` `WelcomePage` → `.welcome-sub`.
+
+### 8. 🟡 "Queued · waiting for the next run" leaks system jargon — `[NOW]`
+**Problem.** "the next run" exposes the discovery-loop concept; a user doesn't know what a "run"
+is.
+**Principle.** Speak the user's language (#2).
+**Proposal.** "Queued — summarizing shortly." Hide the scheduler.
+**Evidence.** `views.templ` card State 3.
+
+### 9. 🟡 Filters render before there's anything to filter — `[NOW]`
+**Problem.** The fresh/empty state shows the full Channel/From/To/Filter bar *above* "Connect
+YouTube." Power tooling stacked on top of the one action that matters.
+**Principle.** Progressive disclosure; minimalist design (#8).
+**Proposal.** Hide the filter bar when there are 0 rows (and arguably below ~20). Show the connect
+CTA alone.
+**Evidence.** `fixes/03-empty-fresh.png`; `ListPage` renders `filterForm` unconditionally.
+
+### 10. 🟡 Date-range filters are dead weight at this scale — `[NOW]` demote / `[LATER]` rebuild
+**Problem.** From/To date pickers + a free-text exact-match Channel field are corpus-scale tools.
+With 15 summaries they're noise; channel-as-freetext is unguessable. (Confirm the prior review's
+#7 is resolved — that `Channel` shows a real channel name, not the `provider` string; seeded
+screenshots suggest it is, live data may differ.)
+**Principle.** Match tool to task; minimalist design.
+**Proposal.** `[NOW]`: reduce to the "Summarized only" toggle (+ maybe channel chips derived from
+present rows). Drop date pickers until the corpus justifies them. `[LATER]`: real channel facets +
+search when there's volume.
+
+---
+
+## P2 — reading experience & polish
+
+### 11. 🟡 Detail leads with Summary; the attention-saving payload (Takeaways) is last — `[NOW]`
+**Problem.** Product promise is "decide what's worth your time." The element that answers that —
+Takeaways / verdict — sits at the bottom. The user reads a full summary to reach the point.
+**Principle.** Lead with the user's actual job-to-be-done.
+**Proposal.** Reorder or add a one-line TL;DR/verdict at top. Takeaways → Highlights → Summary, or
+a "Worth watching?" lede. Data already exists; a reorder, not new machinery.
+**Evidence.** `views.templ` `DetailPage`.
+
+### 12. 🔵 No "back to Summaries" on detail — `[NOW]`
+**Problem.** Only the brand returns home, losing any filter context.
+**Proposal.** Explicit "← Summaries" link on the detail page.
+
+### 13. 🔵 Auto/manual toggle copy will be wrong after recency — `[NOW, with recency]`
+**Problem.** Account copy: *"Automatic summarizes every new video as it is discovered."* Becomes
+false once auto is bounded to ~7d.
+**Proposal.** *"Automatic summarizes new videos from the last ~7 days. Older videos stay
+browsable — summarize them on demand."*
+**Evidence.** `views.templ` `AccountPage` summarization section.
+
+### 14. 🔵 Register step asks acceptance of nonexistent terms — `[NOW]`
+**Problem.** "I accept the terms of use" — no terms linked. For a friends-only tool, ceremony
+accepting nothing.
+**Proposal.** Either link real terms or drop the checkbox at this stage.
+**Evidence.** `views.templ` `RegisterPage`.
+
+### 15. 🔵 watched/skipped mutual exclusivity unsignaled — `[NOW]` low
+**Problem.** Three independent-looking buttons; watched↔skipped are exclusive (carryover from
+prior review #14).
+**Proposal.** Segmented control for watched/skipped; keep Saved separate.
+
+---
+
+## `[LATER]` — premature until the core loop is validated
+
+_(abundance / engagement / multiple users)_
+
+- **Return-nudges (digest email / push).** 🔴 **Caution, not just defer.** A notification that
+  drives returns *contaminates the exact signal the gate measures* — VISION wants *unprompted*
+  returns and admits it can't distinguish prompted from organic. Building a nudge now poisons the
+  experiment. Defer until after the gate reads. `[LATER]`
+- **Full-text search across summaries** — needs volume to matter. `[LATER]`
+- **Channel facets / saved filters / sorting** — corpus-scale tooling (#10). `[LATER]`
+- **Read/unread + "new since last visit"** — genuinely helps returns, but only meaningful once
+  there is throughput to be "new." `[LATER]`
+- **Saved/queue view, collections** — engagement surface; no payoff at 15 items. `[LATER]`
+- **Richer card previews (top-takeaway as preview, 2–3 lines)** — triage aid that only pays off
+  with many cards to triage. `[LATER]`
+- **Backlog progress heartbeat ("N summarized this week", queue burn-down)** — rewards returning,
+  but needs real throughput to show motion; a static "last updated X ago" is the only `[NOW]`-worthy
+  slice. `[LATER]`
+- **Onboarding tour / multi-step welcome** — over-built for one user + a few friends. `[LATER]`
+
+---
+
+## What's already right (don't regress)
+
+Pipeline-bar concept, the honest "No transcript available" terminal state, the queued/waiting
+spinner instead of a fake-imminent one, the Unavailable-channels surface, the constrained-width
+reader, dark mode, the account danger-zone behind a disclosure. The honesty instincts are present
+— the P0s are about making that honesty *legible and correctly-scaled*, not adding it.
+
+## Two judgment calls to settle first
+
+1. **#4 (Recent/Older split) and #5 (collapse the older mass) are one decision viewed twice.**
+   Settle the recency-feed IA once and both fall out.
+2. **The return-nudge caution (`[LATER]` list, item 1) is the one to put in writing now** — before
+   someone "helpfully" ships an email digest to juice the gate and destroys the signal.

go.mod

@@ -10,7 +10,9 @@ require (
 	github.com/golang-migrate/migrate/v4 v4.19.1
 	github.com/jackc/pgx/v5 v5.9.2
 	github.com/stretchr/testify v1.11.1
+	golang.org/x/crypto v0.45.0
 	golang.org/x/oauth2 v0.36.0
+	golang.org/x/time v0.15.0
 )
 
 require (

go.sum

@@ -91,6 +91,8 @@ go.opentelemetry.io/otel/trace v1.37.0 h1:HLdcFNbRQBE2imdSEgm/kwqmQj1Or1l/7bW6mx
 go.opentelemetry.io/otel/trace v1.37.0/go.mod h1:TlgrlQ+PtQO5XFerSPUYG0JSgGyryXewPGyayAWSBS0=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
+golang.org/x/crypto v0.45.0 h1:jMBrvKuj23MTlT0bQEOBcAE0mjg8mK9RXFhRH6nyF3Q=
+golang.org/x/crypto v0.45.0/go.mod h1:XTGrrkGJve7CYK7J8PEww4aY7gM3qMCElcJQ8n8JdX4=
 golang.org/x/oauth2 v0.36.0 h1:peZ/1z27fi9hUOFCAZaHyrpWG5lwe0RJEEEeH0ThlIs=
 golang.org/x/oauth2 v0.36.0/go.mod h1:YDBUJMTkDnJS+A4BP4eZBjCqtokkg1hODuPjwiGPO7Q=
 golang.org/x/sync v0.18.0 h1:kr88TuHDroi+UVf+0hZnirlk8o8T+4MrK6mr60WkH/I=
@@ -99,6 +101,8 @@ golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
 golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
 golang.org/x/text v0.31.0 h1:aC8ghyu4JhP8VojJ2lEHBnochRno1sgL6nEi9WGFGMM=
 golang.org/x/text v0.31.0/go.mod h1:tKRAlv61yKIjGGHX/4tP1LTbc13YSec1pxVEWXzfoeM=
+golang.org/x/time v0.15.0 h1:bbrp8t3bGUeFOx08pvsMYRTCVSMk89u4tKbNOZbp88U=
+golang.org/x/time v0.15.0/go.mod h1:Y4YMaQmXwGQZoFaVFk4YpCt4FLQMYKZe9oeV/f4MSno=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=

internal/adapters/llm/client.go

@@ -34,15 +34,35 @@ type Client struct {
 	httpClient *http.Client
 }
 
+// Option configures a Client at construction. Variadic so the existing 4-arg
+// call sites stay valid as new knobs are added.
+type Option func(*Client)
+
+// WithMaxTokens overrides the per-request completion budget. The summarizer uses
+// this to cap completion for small-context models (e.g. koala/phi4-mini, 8k):
+// with the default 8192 budget, prompt + max_tokens overflows an 8k context and
+// the gateway returns HTTP 400. A non-positive n is ignored (keeps the default).
+func WithMaxTokens(n int) Option {
+	return func(c *Client) {
+		if n > 0 {
+			c.maxTokens = n
+		}
+	}
+}
+
 // New constructs a Client.
-func New(baseURL, apiKey, model string, timeout time.Duration) *Client {
-	return &Client{
+func New(baseURL, apiKey, model string, timeout time.Duration, opts ...Option) *Client {
+	c := &Client{
 		baseURL:    strings.TrimRight(baseURL, "/"),
 		apiKey:     apiKey,
 		model:      model,
 		maxTokens:  defaultMaxTokens,
 		httpClient: &http.Client{Timeout: timeout},
 	}
+	for _, opt := range opts {
+		opt(c)
+	}
+	return c
 }
 
 type chatRequest struct {

internal/adapters/llm/client_test.go

@@ -64,6 +64,27 @@ func TestClient_SendsMaxTokens(t *testing.T) {
 	}
 }
 
+// TestClient_WithMaxTokens overrides the completion budget — the summarizer caps
+// it small so prompt + max_tokens fits a small-context model's window (8k).
+func TestClient_WithMaxTokens(t *testing.T) {
+	var body chatRequest
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		_ = json.NewDecoder(r.Body).Decode(&body)
+		_ = json.NewEncoder(w).Encode(map[string]any{
+			"choices": []map[string]any{{"message": map[string]any{"content": "ok"}}},
+		})
+	}))
+	defer srv.Close()
+
+	c := New(srv.URL, "", "test-model", 10*time.Second, WithMaxTokens(1500))
+	if _, err := c.Complete(context.Background(), "sys", "user"); err != nil {
+		t.Fatalf("Complete: %v", err)
+	}
+	if body.MaxTokens != 1500 {
+		t.Errorf("max_tokens = %d, want 1500", body.MaxTokens)
+	}
+}
+
 func TestClient_ReturnsErrorOnNon200(t *testing.T) {
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "overloaded", http.StatusServiceUnavailable)

internal/adapters/store/account.go

@@ -10,13 +10,17 @@ import (
 // DeleteUser permanently removes a user and all of their data. It runs through
 // withUser so RLS confines every statement to the calling user's own rows.
 //
-// Deleting the users row cascades (ON DELETE CASCADE) to videos, transcripts,
-// summaries (→ sink_deliveries), video_connections, and the user_identities map
-// — referential-integrity cascades bypass RLS, so a user's child rows are removed
-// even though the deleting connection is scoped. summary_actions is the exception:
-// it carries a user_id but has NO foreign key to users (migration 002), so the
-// cascade does not reach it; it is deleted explicitly in the same scoped
-// transaction. Deleting an absent user is a no-op (idempotent).
+// Deleting the users row cascades (ON DELETE CASCADE) to videos, summaries
+// (→ sink_deliveries), video_connections, and the user_identities map —
+// referential-integrity cascades bypass RLS, so a user's child rows are removed
+// even though the deleting connection is scoped. Transcripts are NOT removed:
+// since ADR-021 they are shared public content keyed by (provider,
+// provider_video_id) with no user_id, so another user may still reference the
+// same row — a user deletion must not strip shared caption content. summary_actions and login_events
+// are the exceptions: each carries a user_id but has NO foreign key to users
+// (migrations 002 and 010), so the cascade does not reach them; they are deleted
+// explicitly in the same scoped transaction. Deleting an absent user is a no-op
+// (idempotent).
 //
 // This is tapir-side only (decision 2026-06-03): it removes all tapir data; the
 // Dex login identity is left untouched — a later login simply re-enters
@@ -28,6 +32,10 @@ func (s *Store) DeleteUser(ctx context.Context, userID string) error {
 			`DELETE FROM summary_actions WHERE user_id = $1`, userID); err != nil {
 			return fmt.Errorf("store: delete summary_actions: %w", err)
 		}
+		if _, err := tx.Exec(ctx,
+			`DELETE FROM login_events WHERE user_id = $1`, userID); err != nil {
+			return fmt.Errorf("store: delete login_events: %w", err)
+		}
 		if _, err := tx.Exec(ctx,
 			`DELETE FROM users WHERE id = $1`, userID); err != nil {
 			return fmt.Errorf("store: delete user: %w", err)

internal/adapters/store/channel_caption.go

@@ -0,0 +1,83 @@
+package store
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+)
+
+// CaptionlessChannels returns the set of channel ids currently suppressed for the
+// user — channels whose recent videos all yielded no captions, within their
+// suppression window (ADR-024). The runner skips caption fetches for these
+// channels' videos. A channel whose window has expired is not returned, so its
+// next video is re-probed (auto-recovery).
+func (s *Store) CaptionlessChannels(ctx context.Context, userID string) (map[string]bool, error) {
+	out := map[string]bool{}
+	err := s.withUser(ctx, userID, func(tx pgx.Tx) error {
+		rows, err := tx.Query(ctx, `
+			SELECT channel_id FROM channel_caption_state
+			WHERE user_id = $1 AND captionless_until IS NOT NULL AND captionless_until > now()`,
+			userID)
+		if err != nil {
+			return fmt.Errorf("store: caption-less channels: %w", err)
+		}
+		defer rows.Close()
+		for rows.Next() {
+			var ch string
+			if err := rows.Scan(&ch); err != nil {
+				return fmt.Errorf("store: scan caption-less channel: %w", err)
+			}
+			out[ch] = true
+		}
+		return rows.Err()
+	})
+	return out, err
+}
+
+// RecordChannelCaptionOutcome updates a channel's caption-availability memory
+// after a fetch attempt (ADR-024). hadCaptions resets the channel (consecutive
+// count to 0, suppression cleared). Otherwise the consecutive no-caption count is
+// incremented; once it reaches threshold the channel is suppressed for window.
+// threshold <= 0 is a no-op (feature disabled). An empty channelID is ignored
+// (some sources may not carry one).
+func (s *Store) RecordChannelCaptionOutcome(ctx context.Context, userID, channelID string, hadCaptions bool, threshold int, window time.Duration) error {
+	if channelID == "" || threshold <= 0 {
+		return nil
+	}
+	return s.withUser(ctx, userID, func(tx pgx.Tx) error {
+		if hadCaptions {
+			_, err := tx.Exec(ctx, `
+				INSERT INTO channel_caption_state (user_id, channel_id, consecutive_none, captionless_until, updated_at)
+				VALUES ($1, $2, 0, NULL, now())
+				ON CONFLICT (user_id, channel_id)
+				DO UPDATE SET consecutive_none = 0, captionless_until = NULL, updated_at = now()`,
+				userID, channelID)
+			if err != nil {
+				return fmt.Errorf("store: reset channel caption state: %w", err)
+			}
+			return nil
+		}
+		// No captions: increment the streak; suppress once it reaches threshold.
+		// captionless_until is set from the NEW count inside the same statement so
+		// the decision is atomic with the increment.
+		until := time.Now().Add(window)
+		_, err := tx.Exec(ctx, `
+			INSERT INTO channel_caption_state (user_id, channel_id, consecutive_none, captionless_until, updated_at)
+			VALUES ($1, $2, 1, CASE WHEN 1 >= $3 THEN $4::timestamptz ELSE NULL END, now())
+			ON CONFLICT (user_id, channel_id)
+			DO UPDATE SET
+				consecutive_none = channel_caption_state.consecutive_none + 1,
+				captionless_until = CASE
+					WHEN channel_caption_state.consecutive_none + 1 >= $3 THEN $4::timestamptz
+					ELSE channel_caption_state.captionless_until
+				END,
+				updated_at = now()`,
+			userID, channelID, threshold, until)
+		if err != nil {
+			return fmt.Errorf("store: record channel no-caption: %w", err)
+		}
+		return nil
+	})
+}

internal/adapters/store/channel_caption_test.go

@@ -0,0 +1,67 @@
+package store_test
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestChannelCaptionMemory_SuppressesAfterThreshold(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	super := rawPool(t)
+	resetDB(t, super)
+	seedUser(t, super, userA)
+
+	const threshold = 3
+	window := time.Hour
+
+	// Below threshold: not yet suppressed.
+	require.NoError(t, s.RecordChannelCaptionOutcome(ctx, userA, "chanX", false, threshold, window))
+	require.NoError(t, s.RecordChannelCaptionOutcome(ctx, userA, "chanX", false, threshold, window))
+	got, err := s.CaptionlessChannels(ctx, userA)
+	require.NoError(t, err)
+	require.NotContains(t, got, "chanX", "2 < threshold 3: not suppressed yet")
+
+	// Crossing the threshold suppresses the channel.
+	require.NoError(t, s.RecordChannelCaptionOutcome(ctx, userA, "chanX", false, threshold, window))
+	got, err = s.CaptionlessChannels(ctx, userA)
+	require.NoError(t, err)
+	require.Contains(t, got, "chanX", "3 consecutive no-caption results suppress the channel")
+
+	// A successful caption fetch resets it.
+	require.NoError(t, s.RecordChannelCaptionOutcome(ctx, userA, "chanX", true, threshold, window))
+	got, err = s.CaptionlessChannels(ctx, userA)
+	require.NoError(t, err)
+	require.NotContains(t, got, "chanX", "a captioned video clears suppression")
+}
+
+func TestChannelCaptionMemory_WindowExpiryReProbes(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	super := rawPool(t)
+	resetDB(t, super)
+	seedUser(t, super, userA)
+
+	// A negative window means captionless_until lands in the past — modelling an
+	// elapsed suppression window, which must make the channel eligible again.
+	require.NoError(t, s.RecordChannelCaptionOutcome(ctx, userA, "chanY", false, 1, -time.Hour))
+	got, err := s.CaptionlessChannels(ctx, userA)
+	require.NoError(t, err)
+	require.NotContains(t, got, "chanY", "an expired window re-enables the channel for a re-probe")
+}
+
+func TestChannelCaptionMemory_DisabledThresholdIsNoOp(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	super := rawPool(t)
+	resetDB(t, super)
+	seedUser(t, super, userA)
+
+	require.NoError(t, s.RecordChannelCaptionOutcome(ctx, userA, "chanZ", false, 0, time.Hour))
+	got, err := s.CaptionlessChannels(ctx, userA)
+	require.NoError(t, err)
+	require.Empty(t, got, "threshold 0 disables the memory — nothing recorded")
+}

internal/adapters/store/channel_errors.go

@@ -0,0 +1,59 @@
+package store
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+)
+
+// ChannelError is a channel that returned HTTP 404 on a discovery pass.
+type ChannelError struct {
+	ChannelID   string
+	ChannelName string
+	FirstSeen   time.Time
+	LastSeen    time.Time
+}
+
+// UpsertChannelError records (or refreshes) a 404 channel for the current user.
+// Called by the runner inside a withUser scope; RLS guards user isolation.
+func (s *Store) UpsertChannelError(ctx context.Context, userID, channelID, channelName string) error {
+	return s.withUser(ctx, userID, func(tx pgx.Tx) error {
+		_, err := tx.Exec(ctx, `
+			INSERT INTO channel_errors (user_id, channel_id, channel_name)
+			VALUES ($1, $2, $3)
+			ON CONFLICT (user_id, channel_id)
+			DO UPDATE SET channel_name = EXCLUDED.channel_name, last_seen = now()`,
+			userID, channelID, channelName)
+		if err != nil {
+			return fmt.Errorf("store: upsert channel error: %w", err)
+		}
+		return nil
+	})
+}
+
+// ListChannelErrors returns all 404-flagged channels for the user, newest first.
+func (s *Store) ListChannelErrors(ctx context.Context, userID string) ([]ChannelError, error) {
+	var out []ChannelError
+	err := s.withUser(ctx, userID, func(tx pgx.Tx) error {
+		rows, err := tx.Query(ctx, `
+			SELECT channel_id, channel_name, first_seen, last_seen
+			FROM channel_errors
+			WHERE user_id = $1
+			ORDER BY last_seen DESC`, userID)
+		if err != nil {
+			return fmt.Errorf("store: list channel errors: %w", err)
+		}
+		defer rows.Close()
+		for rows.Next() {
+			var ce ChannelError
+			if err := rows.Scan(&ce.ChannelID, &ce.ChannelName, &ce.FirstSeen, &ce.LastSeen); err != nil {
+				return fmt.Errorf("store: scan channel error: %w", err)
+			}
+			out = append(out, ce)
+		}
+		return rows.Err()
+	})
+	return out, err
+}

internal/adapters/store/identity.go

@@ -31,6 +31,41 @@ func (s *Store) UserBySubject(ctx context.Context, subject string) (userID strin
 	return userID, true, nil
 }
 
+// UserIdentity is one (userID, dexSubject) pair from the un-RLS'd
+// user_identities map — the unit the scheduler enumerates to run a discovery
+// pass per user (ADR-018).
+type UserIdentity struct {
+	UserID     string
+	DexSubject string
+}
+
+// ListAllUsers returns every (userID, dexSubject) pair from user_identities. It
+// runs as a plain pool query WITHOUT withUser — intentional and legitimate:
+// user_identities is un-RLS'd auth plumbing (like UserBySubject), and the
+// scheduler enumerating all users to run their discovery passes is an admin
+// operation that cannot be scoped to any single user. Order is unspecified.
+func (s *Store) ListAllUsers(ctx context.Context) ([]UserIdentity, error) {
+	rows, err := s.pool.Query(ctx,
+		`SELECT user_id, dex_subject FROM user_identities`)
+	if err != nil {
+		return nil, fmt.Errorf("store: list all users: %w", err)
+	}
+	defer rows.Close()
+
+	var users []UserIdentity
+	for rows.Next() {
+		var u UserIdentity
+		if err := rows.Scan(&u.UserID, &u.DexSubject); err != nil {
+			return nil, fmt.Errorf("store: scan user identity: %w", err)
+		}
+		users = append(users, u)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("store: iterate user identities: %w", err)
+	}
+	return users, nil
+}
+
 // RegisterUser creates the tapir user for a Dex subject and the identity mapping
 // that points to it, returning the new user_id. It errors with
 // ErrSubjectRegistered if the subject already maps.

internal/adapters/store/identity_test.go

@@ -85,6 +85,39 @@ func TestRegisterUserRejectsDuplicateSubject(t *testing.T) {
 	require.Equal(t, first, got)
 }
 
+func TestListAllUsersReturnsEveryIdentity(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	resetDB(t, rawPool(t))
+
+	empty, err := s.ListAllUsers(ctx)
+	require.NoError(t, err)
+	require.Empty(t, empty, "no registrations yet → empty slice")
+
+	const subjectC = "dex|carol-789"
+	idA, err := s.RegisterUser(ctx, subjectA, "Alice")
+	require.NoError(t, err)
+	idB, err := s.RegisterUser(ctx, subjectB, "Bob")
+	require.NoError(t, err)
+	idC, err := s.RegisterUser(ctx, subjectC, "Carol")
+	require.NoError(t, err)
+
+	users, err := s.ListAllUsers(ctx)
+	require.NoError(t, err)
+	require.Len(t, users, 3)
+
+	// Order is unspecified; compare as a set of (userID, subject) pairs.
+	got := make(map[string]string, len(users))
+	for _, u := range users {
+		got[u.DexSubject] = u.UserID
+	}
+	require.Equal(t, map[string]string{
+		subjectA: idA,
+		subjectB: idB,
+		subjectC: idC,
+	}, got)
+}
+
 func TestRegisterUserDistinctSubjectsGetDistinctUsers(t *testing.T) {
 	ctx := context.Background()
 	s := newStore(t)

internal/adapters/store/login.go

@@ -0,0 +1,41 @@
+package store
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/jackc/pgx/v5"
+)
+
+// StampLogin records that the user was active today, throttled to one row per
+// user per day. It is the read-side counterpart to SetAction: the middleware
+// calls it on every authenticated request, but the append happens at most once a
+// day so login_events stays small and the signal clean (one row = one active
+// day, not one request).
+//
+// The check-and-insert is a single atomic statement: the INSERT ... SELECT ...
+// WHERE NOT EXISTS only writes when no row for this user has seen_at in today
+// (date_trunc('day', NOW()), server timezone). It runs through withUser, so the
+// NOT EXISTS probe is itself RLS-scoped to the calling user via the
+// tapir.current_user_id GUC — one user's stamp can never be suppressed or
+// triggered by another user's rows. The explicit user_id predicate also keeps the
+// probe on the (user_id, seen_at) index.
+//
+// A unique constraint is deliberately not used: under concurrent same-day
+// requests the worst case is two rows for one day, which the gate query collapses
+// to a single week bucket anyway — not worth a write-blocking constraint.
+func (s *Store) StampLogin(ctx context.Context, userID string) error {
+	if err := s.withUser(ctx, userID, func(tx pgx.Tx) error {
+		_, err := tx.Exec(ctx,
+			`INSERT INTO login_events (user_id)
+			 SELECT $1
+			 WHERE NOT EXISTS (
+			     SELECT 1 FROM login_events
+			      WHERE user_id = $1 AND seen_at >= date_trunc('day', NOW())
+			 )`, userID)
+		return err
+	}); err != nil {
+		return fmt.Errorf("store: stamp login: %w", err)
+	}
+	return nil
+}

internal/adapters/store/login_test.go

@@ -0,0 +1,83 @@
+package store_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/stretchr/testify/require"
+)
+
+// countLoginEvents counts a user's login_events via the superuser pool, which
+// bypasses RLS — so the assertion sees the true row count regardless of scope.
+func countLoginEvents(t *testing.T, p *pgxpool.Pool, userID string) int {
+	t.Helper()
+	var n int
+	require.NoError(t, p.QueryRow(context.Background(),
+		`SELECT count(*) FROM login_events WHERE user_id = $1`, userID).Scan(&n))
+	return n
+}
+
+// TestStampLoginThrottlesToOnePerDay: repeated stamps within the same day insert
+// exactly one row — the throttle that keeps login_events one-row-per-active-day.
+func TestStampLoginThrottlesToOnePerDay(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	super := rawPool(t)
+	resetDB(t, super)
+	_, err := super.Exec(ctx, `INSERT INTO users (id) VALUES ($1)`, userA)
+	require.NoError(t, err)
+
+	for i := 0; i < 3; i++ {
+		require.NoError(t, s.StampLogin(ctx, userA))
+	}
+	require.Equal(t, 1, countLoginEvents(t, super, userA),
+		"three same-day stamps must collapse to one row")
+}
+
+// TestStampLoginRecordsOncePerNewDay: with yesterday's row already present, a
+// stamp today is NOT throttled — it appends the day's row, so distinct active days
+// accumulate (the substrate the gate's distinct-week count reads).
+func TestStampLoginRecordsOncePerNewDay(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	super := rawPool(t)
+	resetDB(t, super)
+	_, err := super.Exec(ctx, `INSERT INTO users (id) VALUES ($1)`, userA)
+	require.NoError(t, err)
+
+	// Seed an event dated yesterday (before today's start), so the throttle's
+	// "row exists with seen_at >= start-of-today" probe finds nothing for today.
+	_, err = super.Exec(ctx,
+		`INSERT INTO login_events (user_id, seen_at) VALUES ($1, NOW() - INTERVAL '1 day')`, userA)
+	require.NoError(t, err)
+
+	require.NoError(t, s.StampLogin(ctx, userA))
+	require.Equal(t, 2, countLoginEvents(t, super, userA),
+		"a stamp on a new day must append a second row")
+
+	// A second stamp the same day is throttled again.
+	require.NoError(t, s.StampLogin(ctx, userA))
+	require.Equal(t, 2, countLoginEvents(t, super, userA),
+		"the same-day repeat must not add a third row")
+}
+
+// TestStampLoginIsUserScoped: one user's stamp lands only on that user's rows —
+// the throttle probe is RLS-scoped, so user B's existing same-day row neither
+// suppresses nor is touched by user A's stamp.
+func TestStampLoginIsUserScoped(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	super := rawPool(t)
+	resetDB(t, super)
+	_, err := super.Exec(ctx, `INSERT INTO users (id) VALUES ($1), ($2)`, userA, userB)
+	require.NoError(t, err)
+
+	// B already has a same-day row; it must not throttle A's first stamp.
+	_, err = super.Exec(ctx, `INSERT INTO login_events (user_id) VALUES ($1)`, userB)
+	require.NoError(t, err)
+
+	require.NoError(t, s.StampLogin(ctx, userA))
+	require.Equal(t, 1, countLoginEvents(t, super, userA), "A's stamp must record despite B's same-day row")
+	require.Equal(t, 1, countLoginEvents(t, super, userB), "A's stamp must not touch B's rows")
+}

internal/adapters/store/migrate_test.go

@@ -0,0 +1,154 @@
+package store_test
+
+import (
+	"context"
+	"database/sql"
+	"os"
+	"testing"
+
+	"github.com/golang-migrate/migrate/v4"
+	migratepgx "github.com/golang-migrate/migrate/v4/database/pgx/v5"
+	"github.com/golang-migrate/migrate/v4/source/iofs"
+	"github.com/stretchr/testify/require"
+
+	_ "github.com/jackc/pgx/v5/stdlib" // register the "pgx" database/sql driver
+)
+
+// fileMigrator builds a golang-migrate instance from the on-disk migration files
+// (not the embedded FS the production Migrate uses), so a test can step the schema
+// up and down. os.DirFS(".") is rooted at the package dir; the SQL lives under
+// "migrations". Mirrors store.Migrate's construction otherwise.
+func fileMigrator(t *testing.T) *migrate.Migrate {
+	t.Helper()
+	db, err := sql.Open("pgx", dsn)
+	require.NoError(t, err)
+	t.Cleanup(func() { _ = db.Close() })
+
+	drv, err := migratepgx.WithInstance(db, &migratepgx.Config{})
+	require.NoError(t, err)
+	src, err := iofs.New(os.DirFS("."), "migrations")
+	require.NoError(t, err)
+	m, err := migrate.NewWithInstance("iofs", src, "pgx", drv)
+	require.NoError(t, err)
+	t.Cleanup(func() { _, _ = m.Close() })
+	return m
+}
+
+// loginEventsExists reports whether the login_events relation is present.
+func loginEventsExists(t *testing.T) bool {
+	t.Helper()
+	var reg *string
+	require.NoError(t, rawPool(t).QueryRow(context.Background(),
+		`SELECT to_regclass('public.login_events')::text`).Scan(&reg))
+	return reg != nil
+}
+
+// TestMigration010LoginEventsUpDown proves migration 010 is reversible: the down
+// migration drops login_events cleanly and the up migration recreates it. A rotten
+// down migration (forgotten DROP, dangling policy) would fail here rather than in
+// production during a rollback. The test restores the schema to latest before
+// returning so the shared embedded-postgres stays at HEAD for sibling tests.
+func TestMigration010LoginEventsUpDown(t *testing.T) {
+	newStore(t) // ensure the schema is migrated to latest (011 applied)
+	require.True(t, loginEventsExists(t), "login_events must exist at latest migration")
+
+	m := fileMigrator(t)
+	// 011..016 sit above 010; step them down first so 010 is exercised in isolation.
+	require.NoError(t, m.Steps(-1), "down 016 drops channel_caption_state, login_events intact")
+	require.True(t, loginEventsExists(t), "016 down leaves login_events intact")
+	require.NoError(t, m.Steps(-1), "down 015 reshapes transcripts, login_events intact")
+	require.True(t, loginEventsExists(t), "015 down leaves login_events intact")
+	require.NoError(t, m.Steps(-1), "down 014 drops channel_title, login_events intact")
+	require.True(t, loginEventsExists(t), "014 down leaves login_events intact")
+	require.NoError(t, m.Steps(-1), "down 013 drops channel_errors, login_events intact")
+	require.True(t, loginEventsExists(t), "013 down leaves login_events intact")
+	require.NoError(t, m.Steps(-1), "down 012 is a no-op, login_events intact")
+	require.True(t, loginEventsExists(t), "012 down leaves login_events intact")
+	require.NoError(t, m.Steps(-1), "down 011 must not touch login_events")
+	require.True(t, loginEventsExists(t), "011 down leaves login_events intact")
+
+	require.NoError(t, m.Steps(-1), "down 010 must drop login_events")
+	require.False(t, loginEventsExists(t), "login_events must be gone after the down migration")
+
+	require.NoError(t, m.Steps(7), "up must recreate 010 then re-apply 011..016")
+	require.True(t, loginEventsExists(t), "login_events must be restored after the up migration")
+}
+
+// autoSummarizeDefault reads the users.auto_summarize column default as text
+// ("true"/"false"), so the migration's default flip is verifiable directly.
+func autoSummarizeDefault(t *testing.T) string {
+	t.Helper()
+	var def string
+	require.NoError(t, rawPool(t).QueryRow(context.Background(),
+		`SELECT column_default FROM information_schema.columns
+		  WHERE table_name = 'users' AND column_name = 'auto_summarize'`).Scan(&def))
+	return def
+}
+
+// TestMigration011AutoSummarizeDefaultUpDown proves migration 011 is reversible:
+// up sets the auto_summarize column default to TRUE (ADR-018), down restores
+// FALSE. The down intentionally does not revert existing rows — only the default.
+func TestMigration011AutoSummarizeDefaultUpDown(t *testing.T) {
+	newStore(t) // latest (013 applied)
+	require.Equal(t, "true", autoSummarizeDefault(t), "011 sets the default to TRUE")
+
+	m := fileMigrator(t)
+	require.NoError(t, m.Steps(-1), "down 016 drops channel_caption_state")
+	require.NoError(t, m.Steps(-1), "down 015 reshapes transcripts")
+	require.NoError(t, m.Steps(-1), "down 014 drops channel_title")
+	require.NoError(t, m.Steps(-1), "down 013 drops channel_errors")
+	require.NoError(t, m.Steps(-1), "down 012 is a no-op")
+	require.NoError(t, m.Steps(-1), "down 011 reverts the column default")
+	require.Equal(t, "false", autoSummarizeDefault(t), "default is FALSE after the down migration")
+
+	require.NoError(t, m.Steps(1), "up 011 re-applies the TRUE default")
+	require.Equal(t, "true", autoSummarizeDefault(t))
+	require.NoError(t, m.Steps(1), "up 012 runs clean (no FORCE RLS on fresh schema)")
+	require.NoError(t, m.Steps(1), "up 013 creates channel_errors")
+	require.NoError(t, m.Steps(1), "up 014 recreates channel_title")
+	require.NoError(t, m.Steps(1), "up 015 reshapes transcripts to shared")
+	require.NoError(t, m.Steps(1), "up 016 recreates channel_caption_state (HEAD)")
+}
+
+// channelTitleExists reports whether videos.channel_title is present.
+func channelTitleExists(t *testing.T) bool {
+	t.Helper()
+	var exists bool
+	require.NoError(t, rawPool(t).QueryRow(context.Background(),
+		`SELECT EXISTS (SELECT 1 FROM information_schema.columns
+		  WHERE table_name = 'videos' AND column_name = 'channel_title')`).Scan(&exists))
+	return exists
+}
+
+// TestMigration014VideoChannelTitleUpDown proves 014 is reversible: down drops
+// videos.channel_title, up recreates it.
+func TestMigration014VideoChannelTitleUpDown(t *testing.T) {
+	newStore(t) // latest (014 applied)
+	require.True(t, channelTitleExists(t), "channel_title exists at latest migration")
+
+	m := fileMigrator(t)
+	require.NoError(t, m.Steps(-1), "down 016 drops channel_caption_state, channel_title intact")
+	require.True(t, channelTitleExists(t), "016 down leaves channel_title intact")
+	require.NoError(t, m.Steps(-1), "down 015 reshapes transcripts, channel_title intact")
+	require.True(t, channelTitleExists(t), "015 down leaves channel_title intact")
+	require.NoError(t, m.Steps(-1), "down 014 must drop channel_title")
+	require.False(t, channelTitleExists(t), "channel_title must be gone after the down migration")
+
+	require.NoError(t, m.Steps(1), "up 014 must recreate channel_title")
+	require.True(t, channelTitleExists(t), "channel_title must be restored after the up migration")
+	require.NoError(t, m.Steps(1), "up 015 restores the shared transcripts shape")
+	require.NoError(t, m.Steps(1), "up 016 recreates channel_caption_state (HEAD)")
+}
+
+// TestMigration012FixAutoSummarizeRLS proves 012 runs cleanly and flips any
+// remaining auto_summarize=FALSE rows to TRUE (the back-fill blocked by RLS in 011).
+func TestMigration012FixAutoSummarizeRLS(t *testing.T) {
+	newStore(t) // apply all migrations including 012
+	require.Equal(t, "true", autoSummarizeDefault(t), "column default is TRUE after 012")
+
+	// Round-trip: down 012, then up 012 — must be idempotent.
+	m := fileMigrator(t)
+	require.NoError(t, m.Steps(-1), "down 012 must not error")
+	require.NoError(t, m.Steps(1), "up 012 must re-apply cleanly")
+	require.Equal(t, "true", autoSummarizeDefault(t), "default still TRUE after 012 re-applied")
+}

internal/adapters/store/migrations/009_invitations.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS invitations;

internal/adapters/store/migrations/009_invitations.up.sql

@@ -0,0 +1,22 @@
+-- Migration 009: invitations — an email-based invite to join Tapir (Stage-1
+-- onboarding gate). Mathias mints one with `tapir invite <email>`; the recipient
+-- visits /invite/{token}, sets a password, and Tapir creates their Dex account.
+--
+-- Deliberately NOT user-owned and NOT under RLS: an invitation exists BEFORE the
+-- user does, so there is no user_id to scope by and no authenticated user context
+-- when the invite is created (host CLI) or consumed (public /invite handler, no
+-- Dex session). The token itself is the capability — a 32-byte crypto-random,
+-- single-use, time-boxed secret. Hence no `user_id` FK and no ENABLE/FORCE ROW
+-- LEVEL SECURITY here (unlike every user-owned table in migrations 003/005).
+CREATE TABLE invitations (
+    id         UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    email      TEXT NOT NULL,
+    token      TEXT NOT NULL UNIQUE,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    expires_at TIMESTAMPTZ NOT NULL,
+    used_at    TIMESTAMPTZ
+);
+
+-- Lookups are by token (both the claim and the form preview); the UNIQUE
+-- constraint already creates an index, this names one explicitly for clarity.
+CREATE INDEX idx_invitations_token ON invitations(token);

internal/adapters/store/migrations/010_login_events.down.sql

@@ -0,0 +1,4 @@
+DROP POLICY IF EXISTS login_events_isolation ON login_events;
+ALTER TABLE login_events NO FORCE ROW LEVEL SECURITY;
+ALTER TABLE login_events DISABLE ROW LEVEL SECURITY;
+DROP TABLE IF EXISTS login_events;

internal/adapters/store/migrations/010_login_events.up.sql

@@ -0,0 +1,33 @@
+-- Migration 010: login_events records THAT a user was active (returned and read)
+-- on a given day — the Stage-0 signal summary_actions misses. summary_actions
+-- captures *acts* (watch/skip/save); a reader who logs in weekly and clicks
+-- nothing is otherwise invisible, yet for a reading product that return IS the
+-- signal the gate ("usage in >=2 distinct weeks", VISION/ADR-016) is defined on.
+--
+-- Append-only: one row per user per active day (the request-path throttle in the
+-- web layer enforces that cadence), never updated. Per-user isolation like every
+-- user-owned table.
+--
+-- NO foreign key to users (mirrors summary_actions, migration 002): user_id is
+-- carried for RLS/scoping but the table is decoupled so a stamp never blocks on a
+-- users row. The cost of that decoupling: the users-row cascade does NOT reach
+-- login_events, so DeleteUser must delete it explicitly (see account.go) — the
+-- exact footgun the summary_actions delete work caught.
+CREATE TABLE login_events (
+    id       UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id  UUID NOT NULL,
+    seen_at  TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- (user_id, seen_at) serves both the per-user-per-day throttle lookup
+-- (seen_at >= start-of-today) and the gate query's per-user week bucketing.
+CREATE INDEX idx_login_events_user_seen ON login_events(user_id, seen_at);
+
+-- RLS: identical GUC-keyed policy/pattern to migration 003. FORCE so the table
+-- owner (tapir, non-superuser in prod) is subject to it; an unset GUC yields NULL
+-- → no rows match → deny-all.
+ALTER TABLE login_events ENABLE ROW LEVEL SECURITY;
+ALTER TABLE login_events FORCE ROW LEVEL SECURITY;
+CREATE POLICY login_events_isolation ON login_events
+    FOR ALL
+    USING (user_id = current_setting('tapir.current_user_id', true)::uuid);

internal/adapters/store/migrations/011_auto_summarize_default.down.sql

@@ -0,0 +1,5 @@
+-- Revert the column default to FALSE. Existing rows are intentionally NOT
+-- reverted: flipping live users back to manual on a rollback would be a
+-- surprising regression (they may have come to rely on auto). The default change
+-- is the reversible part; data stays as the user left it.
+ALTER TABLE users ALTER COLUMN auto_summarize SET DEFAULT FALSE;

internal/adapters/store/migrations/011_auto_summarize_default.up.sql

@@ -0,0 +1,17 @@
+-- Migration 011: flip auto_summarize default to TRUE (ADR-018, Future-B).
+--
+-- Scheduled discovery (ADR-018) makes Tapir watch unprompted. For onboarded
+-- friends that only delivers zero-friction value if the list also SUMMARIZES
+-- itself — a manual default would mean the scheduler discovers videos a user
+-- still has to click through one by one, which is the empty-list problem again.
+-- So new users default to AUTO. The account-page toggle still lets a user switch
+-- to manual (SetAutoSummarize), so this only changes the out-of-the-box state.
+--
+-- Safe only because the process-wide caption-fetch rate gate (ADR-014 item 2)
+-- now exists: auto + scheduled + multi-user would otherwise self-inflict 429s
+-- every cycle. The gate is the precondition for shipping this default.
+ALTER TABLE users ALTER COLUMN auto_summarize SET DEFAULT TRUE;
+
+-- Bring existing rows (maintainer + any current registrations) onto the new
+-- default so they benefit immediately, not just users created after this point.
+UPDATE users SET auto_summarize = TRUE WHERE auto_summarize = FALSE;

internal/adapters/store/migrations/012_fix_auto_summarize_rls.down.sql

@@ -0,0 +1 @@
+-- No data revert: do not flip users back to manual on rollback.

internal/adapters/store/migrations/012_fix_auto_summarize_rls.up.sql

@@ -0,0 +1,6 @@
+-- Migration 011's UPDATE ran without tapir.current_user_id set, so FORCE RLS
+-- blocked all rows and zero users were updated. Temporarily drop FORCE so the
+-- table owner (tapir role) can bypass RLS for this back-fill, then restore it.
+ALTER TABLE users NO FORCE ROW LEVEL SECURITY;
+UPDATE users SET auto_summarize = TRUE WHERE auto_summarize = FALSE;
+ALTER TABLE users FORCE ROW LEVEL SECURITY;

internal/adapters/store/migrations/013_channel_errors.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS channel_errors;

internal/adapters/store/migrations/013_channel_errors.up.sql

@@ -0,0 +1,22 @@
+-- channel_errors: channels that returned HTTP 404 (deleted/private) on the most
+-- recent scheduler pass. Surfaced on the account page so users know why some
+-- subscribed channels produce no videos. Upserted per-pass; cleared when the
+-- channel starts returning results again (runner calls UpsertChannelError only
+-- on 404, so a recovered channel simply stops appearing after its row ages out
+-- or the user takes action). ON DELETE CASCADE keeps rows tidy on account deletion.
+CREATE TABLE channel_errors (
+    user_id      UUID        NOT NULL REFERENCES users(id)  ON DELETE CASCADE,
+    channel_id   TEXT        NOT NULL,
+    channel_name TEXT        NOT NULL,
+    first_seen   TIMESTAMPTZ NOT NULL DEFAULT now(),
+    last_seen    TIMESTAMPTZ NOT NULL DEFAULT now(),
+    PRIMARY KEY (user_id, channel_id)
+);
+
+CREATE INDEX idx_channel_errors_user_id ON channel_errors(user_id);
+
+ALTER TABLE channel_errors ENABLE ROW LEVEL SECURITY;
+ALTER TABLE channel_errors FORCE ROW LEVEL SECURITY;
+CREATE POLICY channel_errors_isolation ON channel_errors
+    FOR ALL
+    USING (user_id = current_setting('tapir.current_user_id', true)::uuid);

internal/adapters/store/migrations/014_video_channel_title.down.sql

@@ -0,0 +1 @@
+ALTER TABLE videos DROP COLUMN channel_title;

internal/adapters/store/migrations/014_video_channel_title.up.sql

@@ -0,0 +1,8 @@
+-- Store the source channel's title per video so the list can offer a real
+-- channel filter (multi-select of the user's channels) instead of the dead
+-- free-text field that only ever matched the provider string. Nullable: existing
+-- rows backfill on the next discovery pass (UpsertVideo writes it); pasted videos
+-- get it immediately from videos.list. No FK to a channels table at Stage 0 — the
+-- title is a denormalised display/filter value, consistent with the existing
+-- subscription_id-stays-NULL stance (data-model.md).
+ALTER TABLE videos ADD COLUMN channel_title TEXT;

internal/adapters/store/migrations/015_shared_transcripts.down.sql

@@ -0,0 +1,19 @@
+-- Down 015: restore the per-user RLS-scoped transcripts shape (001 + 003).
+DROP TABLE transcripts;
+
+CREATE TABLE transcripts (
+    video_id    UUID PRIMARY KEY REFERENCES videos(id) ON DELETE CASCADE,
+    user_id     UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    source      TEXT NOT NULL,
+    language    TEXT,
+    content     TEXT,
+    resolved_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_transcripts_user_id ON transcripts(user_id);
+
+ALTER TABLE transcripts ENABLE ROW LEVEL SECURITY;
+ALTER TABLE transcripts FORCE ROW LEVEL SECURITY;
+CREATE POLICY transcripts_isolation ON transcripts
+    FOR ALL
+    USING (user_id = current_setting('tapir.current_user_id', true)::uuid);

internal/adapters/store/migrations/015_shared_transcripts.up.sql

@@ -0,0 +1,30 @@
+-- Migration 015: transcripts become SHARED public-content storage (ADR-021).
+--
+-- The per-user transcripts table from 001 (PK videos.id, user_id NOT NULL, RLS
+-- FORCEd in 003) was dead: no application code ever read or wrote it — only the
+-- transcript_status columns on `videos` (007) carried fetch outcomes. ADR-021
+-- repurposes it as the single shared store of public caption content, keyed by
+-- the cross-user dedup key (provider, provider_video_id) — the video's public
+-- identity, not Tapir's per-user videos.id — so re-analysis never re-fetches
+-- from YouTube (ADR-010/014).
+--
+-- It holds ONLY public caption content + the video's public id (nothing
+-- user-identifying), so it is deliberately NOT RLS-scoped: no user_id, no
+-- policy, no FORCE. This is the single, intentional exception to the ADR-012
+-- isolation boundary; rls_test.go asserts the boundary is exactly here and
+-- nowhere else. Dropping the old table drops its RLS policy with it; it held no
+-- real data, so drop+recreate loses nothing.
+DROP TABLE transcripts;
+
+CREATE TABLE transcripts (
+    provider          TEXT NOT NULL,
+    provider_video_id TEXT NOT NULL,
+    source            TEXT NOT NULL, -- 'captions' (content set) | 'none' (no captions; content NULL)
+    language          TEXT,
+    content           TEXT,
+    fetched_at        TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    PRIMARY KEY (provider, provider_video_id)
+);
+
+COMMENT ON TABLE transcripts IS
+    'Shared public caption content keyed by (provider, provider_video_id). NOT RLS-scoped — public content only, de-facto cross-user dedup (ADR-021).';

internal/adapters/store/migrations/016_channel_caption_state.down.sql

@@ -0,0 +1 @@
+DROP TABLE channel_caption_state;

internal/adapters/store/migrations/016_channel_caption_state.up.sql

@@ -0,0 +1,30 @@
+-- Migration 016: per-(user, channel) caption-availability memory (ADR-024).
+--
+-- Some channels never publish English captions (foreign-language news, music,
+-- etc.). Each of their new videos still costs ONE rate-limited caption fetch
+-- (ADR-014) before resolving to "none" — and on a throttled egress IP that fetch
+-- may 429 and churn through the backoff machinery first. This table remembers
+-- channels that repeatedly yield no captions so discovery can stop attempting
+-- their videos, freeing the scarce fetch budget for channels that do have them.
+--
+-- consecutive_none counts no-caption outcomes in a row; a successful fetch resets
+-- it to 0. Once it crosses the threshold the channel is suppressed until
+-- captionless_until, after which one video is re-probed (auto-recovery for a
+-- channel that starts adding captions). Per-user + RLS-scoped, consistent with
+-- the rest of the user-owned schema (subscriptions are per-user; ADR-012).
+CREATE TABLE channel_caption_state (
+    user_id           UUID        NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    channel_id        TEXT        NOT NULL,
+    consecutive_none  INT         NOT NULL DEFAULT 0,
+    captionless_until TIMESTAMPTZ,
+    updated_at        TIMESTAMPTZ NOT NULL DEFAULT now(),
+    PRIMARY KEY (user_id, channel_id)
+);
+
+CREATE INDEX idx_channel_caption_state_user_id ON channel_caption_state(user_id);
+
+ALTER TABLE channel_caption_state ENABLE ROW LEVEL SECURITY;
+ALTER TABLE channel_caption_state FORCE ROW LEVEL SECURITY;
+CREATE POLICY channel_caption_state_isolation ON channel_caption_state
+    FOR ALL
+    USING (user_id = current_setting('tapir.current_user_id', true)::uuid);

internal/adapters/store/reads.go

@@ -29,6 +29,7 @@ type SummaryRow struct {
 	ProviderVideoID string    // videos.provider_video_id; empty when no videos row
 	Title           string    // videos.title; empty when no videos row
 	Channel         string    // videos.provider for now; empty when no videos row
+	ChannelTitle    string    // videos.channel_title; the source channel, for display + filtering
 	URL             string    // videos.url; empty when no videos row
 	PublishedAt     time.Time // videos.published_at; zero when absent
 	Summary         string
@@ -137,24 +138,28 @@ const selectVideo = `
 	       COALESCE(s.created_at, v.seen_at),
 	       (s.id IS NOT NULL) AS summarized,
 	       v.summarize_requested,
-	       COALESCE(v.transcript_status, '')
+	       COALESCE(v.transcript_status, ''),
+	       COALESCE(v.channel_title, '')
 	  FROM videos v
 	  LEFT JOIN summaries s ON s.video_id = v.id AND s.user_id = v.user_id`
 
-// ListVideos returns ALL of the user's videos — summarized and not — most recent
-// first by seen_at, capped at limit (non-positive defaults to 50). Unsummarized
+// ListVideos returns ALL of the user's videos — summarized first, then by
+// published_at DESC with undated videos last, then seen_at DESC as a tiebreak —
+// capped at limit (non-positive defaults to 500). The published_at ordering
+// aligns the list with the recency framing (newest content first); seen_at
+// breaks ties and orders same/!undated rows deterministically. Unsummarized
 // videos come back with Summarized=false and empty summary fields, so the list
 // view can render them with a "Summarize" affordance. Scoped by user_id.
 func (s *Store) ListVideos(ctx context.Context, userID string, limit int) ([]SummaryRow, error) {
 	if limit <= 0 {
-		limit = 50
+		limit = 500
 	}
 	var out []SummaryRow
 	if err := s.withUser(ctx, userID, func(tx pgx.Tx) error {
 		rows, err := tx.Query(ctx,
 			selectVideo+`
 			 WHERE v.user_id = $1
-			 ORDER BY v.seen_at DESC
+			 ORDER BY (s.id IS NOT NULL) DESC, v.published_at DESC NULLS LAST, v.seen_at DESC
 			 LIMIT $2`,
 			userID, limit)
 		if err != nil {
@@ -251,6 +256,7 @@ func scanVideoRow(rows pgx.Row) (SummaryRow, error) {
 		&row.Summarized,
 		&row.SummarizeRequested,
 		&row.TranscriptStatus,
+		&row.ChannelTitle,
 	); err != nil {
 		return SummaryRow{}, fmt.Errorf("store: scan video: %w", err)
 	}

internal/adapters/store/report.go

@@ -0,0 +1,111 @@
+package store
+
+import (
+	"context"
+	"fmt"
+	"sort"
+
+	"github.com/jackc/pgx/v5"
+)
+
+// UserActiveWeeks is one row of the Stage-0 gate report: how many DISTINCT
+// calendar weeks a user was active in, counting reads (login_events) AND acts
+// (summary_actions) together. The gate (VISION/ADR-016) passes when any user
+// reaches ActiveWeeks >= 2.
+type UserActiveWeeks struct {
+	UserID      string
+	DisplayName string
+	ActiveWeeks int
+}
+
+// ActiveWeeks computes per-user distinct-active-weeks for the gate report, most
+// active first.
+//
+// Why per-user iteration rather than one cross-user GROUP BY: the user-owned
+// tables are FORCE RLS (migration 003/010) and the production role is a non-
+// superuser owner, so a single un-scoped query sees nothing (deny-all). Instead we
+// enumerate users from the deliberately un-RLS'd identity map (user_identities,
+// migration 004) and count each user's weeks inside withUser, where the GUC scopes
+// login_events + summary_actions to that user. No privilege escalation, no policy
+// change — the same isolation seam every other read flows through.
+//
+// Scope note: the enumeration covers users with a Dex identity (the web users the
+// gate is about). A CLI-only user created by the store sink without an identity
+// row would not appear — out of scope for this gate.
+func (s *Store) ActiveWeeks(ctx context.Context) ([]UserActiveWeeks, error) {
+	userIDs, err := s.identityUserIDs(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	out := make([]UserActiveWeeks, 0, len(userIDs))
+	for _, uid := range userIDs {
+		row, err := s.activeWeeksFor(ctx, uid)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, row)
+	}
+
+	// Most active first; user_id as a stable tie-break for deterministic output.
+	sort.SliceStable(out, func(i, j int) bool {
+		if out[i].ActiveWeeks != out[j].ActiveWeeks {
+			return out[i].ActiveWeeks > out[j].ActiveWeeks
+		}
+		return out[i].UserID < out[j].UserID
+	})
+	return out, nil
+}
+
+// identityUserIDs lists every tapir user_id from the un-RLS'd identity map. It
+// runs directly on the pool (no withUser): user_identities carries no user data
+// and is intentionally not RLS-enabled, so it is the one table that can be read
+// pre-scope to discover who exists.
+func (s *Store) identityUserIDs(ctx context.Context) ([]string, error) {
+	rows, err := s.pool.Query(ctx, `SELECT user_id FROM user_identities ORDER BY user_id`)
+	if err != nil {
+		return nil, fmt.Errorf("store: list identity users: %w", err)
+	}
+	defer rows.Close()
+
+	var ids []string
+	for rows.Next() {
+		var id string
+		if err := rows.Scan(&id); err != nil {
+			return nil, fmt.Errorf("store: scan identity user: %w", err)
+		}
+		ids = append(ids, id)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("store: iterate identity users: %w", err)
+	}
+	return ids, nil
+}
+
+// activeWeeksFor counts one user's distinct active weeks (reads UNION acts) and
+// reads their display name, RLS-scoped via withUser. The UNION dedups a week that
+// has both a login and an action so it counts once.
+func (s *Store) activeWeeksFor(ctx context.Context, userID string) (UserActiveWeeks, error) {
+	res := UserActiveWeeks{UserID: userID}
+	if err := s.withUser(ctx, userID, func(tx pgx.Tx) error {
+		if err := tx.QueryRow(ctx,
+			`WITH weeks AS (
+			     SELECT date_trunc('week', seen_at) AS wk
+			       FROM login_events WHERE user_id = $1
+			     UNION
+			     SELECT date_trunc('week', acted_at)
+			       FROM summary_actions WHERE user_id = $1
+			 )
+			 SELECT count(DISTINCT wk) FROM weeks`, userID).Scan(&res.ActiveWeeks); err != nil {
+			return fmt.Errorf("store: count active weeks: %w", err)
+		}
+		if err := tx.QueryRow(ctx,
+			`SELECT COALESCE(display_name, '') FROM users WHERE id = $1`, userID).Scan(&res.DisplayName); err != nil {
+			return fmt.Errorf("store: read display name: %w", err)
+		}
+		return nil
+	}); err != nil {
+		return UserActiveWeeks{}, err
+	}
+	return res, nil
+}

internal/adapters/store/report_test.go

@@ -0,0 +1,78 @@
+package store_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/stretchr/testify/require"
+)
+
+// seedReportUser inserts a user + its identity mapping (the enumeration source
+// ActiveWeeks reads). display_name is optional.
+func seedReportUser(t *testing.T, p *pgxpool.Pool, userID, subject, name string) {
+	t.Helper()
+	ctx := context.Background()
+	_, err := p.Exec(ctx,
+		`INSERT INTO users (id, display_name) VALUES ($1, NULLIF($2, ''))`, userID, name)
+	require.NoError(t, err)
+	_, err = p.Exec(ctx,
+		`INSERT INTO user_identities (dex_subject, user_id) VALUES ($1, $2)`, subject, userID)
+	require.NoError(t, err)
+}
+
+// TestActiveWeeksCountsDistinctWeeksAcrossReadsAndActs is the gate-query proof.
+// It seeds, with fixed timestamps in known ISO weeks:
+//   - user A: reads in week of Jan 5 and Jan 12, acts in week of Jan 12 (dup) and
+//     Jan 19 → the UNION across both tables collapses the shared week → 3 distinct.
+//   - user B: a single read in the week of Jan 5 → 1 distinct (below the gate).
+//
+// It verifies the count is correct, dedups the cross-table shared week, and orders
+// most-active first.
+func TestActiveWeeksCountsDistinctWeeksAcrossReadsAndActs(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	p := rawPool(t)
+	resetDB(t, p) // TRUNCATE ... users CASCADE also clears user_identities
+
+	seedReportUser(t, p, userA, "subject-a", "Ada")
+	seedReportUser(t, p, userB, "subject-b", "")
+
+	// Reads (login_events) — fixed dates in distinct ISO weeks.
+	_, err := p.Exec(ctx,
+		`INSERT INTO login_events (user_id, seen_at) VALUES
+		   ($1, '2026-01-05T09:00:00Z'),
+		   ($1, '2026-01-12T09:00:00Z'),
+		   ($2, '2026-01-05T09:00:00Z')`, userA, userB)
+	require.NoError(t, err)
+
+	// Acts (summary_actions) — one in A's week-of-Jan-12 (shared with a read, must
+	// dedup) and one in a new week (Jan 19).
+	_, err = p.Exec(ctx,
+		`INSERT INTO summary_actions (user_id, video_id, action, acted_at) VALUES
+		   ($1, 'vid-1', 'watched', '2026-01-12T18:00:00Z'),
+		   ($1, 'vid-2', 'saved',   '2026-01-19T18:00:00Z')`, userA)
+	require.NoError(t, err)
+
+	got, err := s.ActiveWeeks(ctx)
+	require.NoError(t, err)
+	require.Len(t, got, 2, "both identity users must appear")
+
+	require.Equal(t, userA, got[0].UserID, "most-active user first")
+	require.Equal(t, "Ada", got[0].DisplayName)
+	require.Equal(t, 3, got[0].ActiveWeeks, "3 distinct weeks across reads+acts, shared week deduped")
+
+	require.Equal(t, userB, got[1].UserID)
+	require.Equal(t, 1, got[1].ActiveWeeks, "single read = 1 distinct week (below gate)")
+}
+
+// TestActiveWeeksEmptyWhenNoUsers: no identities → no rows (not an error).
+func TestActiveWeeksEmptyWhenNoUsers(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	resetDB(t, rawPool(t))
+
+	got, err := s.ActiveWeeks(ctx)
+	require.NoError(t, err)
+	require.Empty(t, got)
+}

internal/adapters/store/rls_test.go

@@ -22,9 +22,11 @@ import (
 // (no GUC set → zero rows) proves the enforcement path is live, not bypassed.
 
 // userIsolatedTables are the tables that carry a user_id and whose policy keys
-// directly off the tapir.current_user_id GUC.
+// directly off the tapir.current_user_id GUC. transcripts is deliberately ABSENT
+// — ADR-021 made it shared public content (non-RLS); TestTranscriptsTableIsSharedNotRLS
+// proves that is the only place the isolation boundary moved.
 var userIsolatedTables = []string{
-	"users", "videos", "transcripts", "summaries", "summary_actions", "video_connections",
+	"users", "videos", "summaries", "summary_actions", "login_events", "video_connections",
 }
 
 // allIsolatedTables adds sink_deliveries, whose ownership is derived from its
@@ -38,9 +40,10 @@ type seeded struct {
 	summaryID string
 }
 
-// seedUser inserts one full chain (user → video → transcript → summary →
-// action → delivery) as the superuser pool, which bypasses RLS so both users'
-// data lands regardless of the GUC.
+// seedUser inserts one full chain (user → video → summary → action → delivery)
+// as the superuser pool, which bypasses RLS so both users' data lands regardless
+// of the GUC. Transcripts are NOT seeded here: they are shared, non-RLS public
+// content (ADR-021), so they have no place in a per-user isolation chain.
 func seedUser(t *testing.T, p *pgxpool.Pool, userID string) seeded {
 	t.Helper()
 	ctx := context.Background()
@@ -54,11 +57,6 @@ func seedUser(t *testing.T, p *pgxpool.Pool, userID string) seeded {
 		 VALUES ($1, 'youtube', $2, 'title') RETURNING id`,
 		userID, "vid-"+userID).Scan(&videoID))
 
-	_, err = p.Exec(ctx,
-		`INSERT INTO transcripts (video_id, user_id, source, content)
-		 VALUES ($1, $2, 'captions', 'words')`, videoID, userID)
-	require.NoError(t, err)
-
 	var summaryID string
 	require.NoError(t, p.QueryRow(ctx,
 		`INSERT INTO summaries (user_id, video_id, summary) VALUES ($1, $2, 'sum')
@@ -69,6 +67,10 @@ func seedUser(t *testing.T, p *pgxpool.Pool, userID string) seeded {
 		 VALUES ($1, $2, 'watched')`, userID, videoID)
 	require.NoError(t, err)
 
+	_, err = p.Exec(ctx,
+		`INSERT INTO login_events (user_id) VALUES ($1)`, userID)
+	require.NoError(t, err)
+
 	_, err = p.Exec(ctx,
 		`INSERT INTO sink_deliveries (summary_id, sink, status)
 		 VALUES ($1, 'store', 'delivered')`, summaryID)
@@ -88,9 +90,16 @@ func appPool(t *testing.T, super *pgxpool.Pool) *pgxpool.Pool {
 	t.Helper()
 	ctx := context.Background()
 
-	// Idempotent across test runs (schema/role persist for the TestMain PG).
-	_, _ = super.Exec(ctx, `DROP ROLE IF EXISTS app`)
-	_, err := super.Exec(ctx, `CREATE ROLE app LOGIN PASSWORD 'app'`)
+	// Idempotent across tests AND runs: the role persists for the TestMain PG and
+	// owns granted privileges, so a plain DROP ROLE fails once any GRANT exists
+	// (and more than one test now builds an app pool). Create only if absent; the
+	// GRANTs below are themselves idempotent.
+	_, err := super.Exec(ctx,
+		`DO $$ BEGIN
+		    IF NOT EXISTS (SELECT FROM pg_roles WHERE rolname = 'app') THEN
+		        CREATE ROLE app LOGIN PASSWORD 'app';
+		    END IF;
+		 END $$`)
 	require.NoError(t, err)
 	_, err = super.Exec(ctx, `GRANT USAGE ON SCHEMA public TO app`)
 	require.NoError(t, err)
@@ -182,13 +191,14 @@ func TestRLSEnforcesPerUserIsolation(t *testing.T) {
 		{"update users", `UPDATE users SET display_name = 'hacked' WHERE id = $1`, b.userID},
 		{"update videos", `UPDATE videos SET title = 'hacked' WHERE user_id = $1`, b.userID},
 		{"queue videos summarize", `UPDATE videos SET summarize_requested = TRUE WHERE id = $1`, b.videoID},
-		{"update transcripts", `UPDATE transcripts SET content = 'hacked' WHERE user_id = $1`, b.userID},
 		{"update summaries", `UPDATE summaries SET summary = 'hacked' WHERE user_id = $1`, b.userID},
 		{"update summary_actions", `UPDATE summary_actions SET action = 'skipped' WHERE user_id = $1`, b.userID},
+		{"update login_events", `UPDATE login_events SET seen_at = NOW() WHERE user_id = $1`, b.userID},
 		{"update sink_deliveries", `UPDATE sink_deliveries SET status = 'hacked' WHERE summary_id = $1`, b.summaryID},
 		{"update video_connections", `UPDATE video_connections SET token_ref = 'hacked' WHERE user_id = $1`, b.userID},
 		{"delete summaries", `DELETE FROM summaries WHERE user_id = $1`, b.userID},
 		{"delete summary_actions", `DELETE FROM summary_actions WHERE user_id = $1`, b.userID},
+		{"delete login_events", `DELETE FROM login_events WHERE user_id = $1`, b.userID},
 		{"delete sink_deliveries", `DELETE FROM sink_deliveries WHERE summary_id = $1`, b.summaryID},
 		{"delete video_connections", `DELETE FROM video_connections WHERE user_id = $1`, b.userID},
 	}
@@ -205,17 +215,20 @@ func TestRLSEnforcesPerUserIsolation(t *testing.T) {
 		`SELECT summary FROM summaries WHERE user_id = $1`, b.userID).Scan(&bSummary))
 	require.Equal(t, "sum", bSummary, "B's summary must be untouched by A's writes")
 
-	var bSummaries, bActions, bDeliveries, bConnections int
+	var bSummaries, bActions, bLogins, bDeliveries, bConnections int
 	require.NoError(t, super.QueryRow(ctx,
 		`SELECT count(*) FROM summaries WHERE user_id = $1`, b.userID).Scan(&bSummaries))
 	require.NoError(t, super.QueryRow(ctx,
 		`SELECT count(*) FROM summary_actions WHERE user_id = $1`, b.userID).Scan(&bActions))
+	require.NoError(t, super.QueryRow(ctx,
+		`SELECT count(*) FROM login_events WHERE user_id = $1`, b.userID).Scan(&bLogins))
 	require.NoError(t, super.QueryRow(ctx,
 		fmt.Sprintf(`SELECT count(*) FROM sink_deliveries WHERE summary_id = '%s'`, b.summaryID)).Scan(&bDeliveries))
 	require.NoError(t, super.QueryRow(ctx,
 		`SELECT count(*) FROM video_connections WHERE user_id = $1 AND token_ref <> 'hacked'`, b.userID).Scan(&bConnections))
 	require.Equal(t, 1, bSummaries, "A's DELETE must not have removed B's summary")
 	require.Equal(t, 1, bActions, "A's DELETE must not have removed B's action")
+	require.Equal(t, 1, bLogins, "A's DELETE must not have removed B's login event")
 	require.Equal(t, 1, bDeliveries, "A's DELETE must not have removed B's delivery")
 	require.Equal(t, 1, bConnections, "A's writes must not have touched B's connection")
 
@@ -226,3 +239,55 @@ func TestRLSEnforcesPerUserIsolation(t *testing.T) {
 
 	_ = a // a's ids are seeded for the symmetric read assertions above
 }
+
+// TestTranscriptsTableIsSharedNotRLS is the ADR-021 isolation proof: transcripts
+// is the ONE shared, non-RLS surface, and the public-content classification
+// leaked to nothing else. It is the inverse of TestRLSEnforcesPerUserIsolation —
+// where that asserts deny-all on every user-owned table, this asserts transcripts
+// is readable and writable with no user scope at all, holds no user_id, and is
+// the single table with row-level security switched off.
+func TestTranscriptsTableIsSharedNotRLS(t *testing.T) {
+	newStore(t)
+	super := rawPool(t)
+	resetDB(t, super)
+	app := appPool(t, super)
+	ctx := context.Background()
+
+	// 1. Shared + non-RLS: with NO GUC set, the app role both writes and reads a
+	//    transcript. On an RLS table this would be deny-all (zero rows), exactly as
+	//    the main isolation test asserts for every user-owned table.
+	_, err := app.Exec(ctx,
+		`INSERT INTO transcripts (provider, provider_video_id, source, content)
+		 VALUES ('youtube', 'shared-vid', 'captions', 'public words')`)
+	require.NoError(t, err, "app role must write shared transcript content with no user scope")
+	require.Equal(t, 1, scopedCount(t, app, "", "transcripts"),
+		"transcripts must be readable with NO user scope — it is shared, non-RLS (ADR-021)")
+
+	// 2. No user_id column: the table holds only public caption content + the
+	//    video's public id, nothing user-identifying.
+	var hasUserID bool
+	require.NoError(t, super.QueryRow(ctx,
+		`SELECT EXISTS (SELECT 1 FROM information_schema.columns
+		                 WHERE table_name = 'transcripts' AND column_name = 'user_id')`).Scan(&hasUserID))
+	require.False(t, hasUserID, "transcripts must carry no user_id (ADR-021 public content)")
+
+	// 3. The boundary is EXACTLY here: every user-owned table still has row-level
+	//    security enabled; transcripts alone has it off. This is the proof the
+	//    non-RLS classification was applied to transcripts and leaked nowhere else.
+	for _, table := range allIsolatedTables {
+		require.True(t, rlsEnabled(t, super, table),
+			"%s must still enforce row-level security — isolation must not have regressed", table)
+	}
+	require.False(t, rlsEnabled(t, super, "transcripts"),
+		"transcripts must be the single table with row-level security OFF (the one shared surface)")
+}
+
+// rlsEnabled reports whether a public table has ROW LEVEL SECURITY enabled.
+func rlsEnabled(t *testing.T, p *pgxpool.Pool, table string) bool {
+	t.Helper()
+	var enabled bool
+	require.NoError(t, p.QueryRow(context.Background(),
+		`SELECT relrowsecurity FROM pg_class
+		  WHERE relname = $1 AND relnamespace = 'public'::regnamespace`, table).Scan(&enabled))
+	return enabled
+}

internal/adapters/store/store_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"os"
+	"path/filepath"
 	"testing"
 
 	embeddedpostgres "github.com/fergusstrange/embedded-postgres"
@@ -24,11 +25,22 @@ var _ ports.Sink = (*store.Store)(nil)
 var dsn string
 
 func TestMain(m *testing.M) {
-	const port = 54329
+	// Port + runtime/data dirs are per-process (PID-derived) so two concurrent
+	// `go test` invocations — e.g. a push-run and a tag-run firing together in CI —
+	// don't collide on a fixed port or a shared data dir (which silently failed
+	// both runs). CachePath is shared so the PG archive is downloaded once, not
+	// per process. Base 54000 keeps this package's range distinct from web's.
+	port := uint32(54000 + os.Getpid()%1000)
 	dsn = fmt.Sprintf("postgres://postgres:postgres@localhost:%d/postgres?sslmode=disable", port)
 
+	rt := filepath.Join(os.TempDir(), fmt.Sprintf("tapir-epg-store-%d", os.Getpid()))
 	pg := embeddedpostgres.NewDatabase(
-		embeddedpostgres.DefaultConfig().Port(port),
+		embeddedpostgres.DefaultConfig().
+			Port(port).
+			RuntimePath(rt).
+			DataPath(filepath.Join(rt, "data")).
+			BinariesPath(filepath.Join(rt, "bin")).
+			CachePath(filepath.Join(os.TempDir(), "tapir-epg-cache")),
 	)
 	if err := pg.Start(); err != nil {
 		fmt.Fprintf(os.Stderr, "embedded-postgres start: %v\n", err)
@@ -40,6 +52,7 @@ func TestMain(m *testing.M) {
 	if err := pg.Stop(); err != nil {
 		fmt.Fprintf(os.Stderr, "embedded-postgres stop: %v\n", err)
 	}
+	_ = os.RemoveAll(rt)
 	os.Exit(code)
 }
 
@@ -74,7 +87,7 @@ func rawPool(t *testing.T) *pgxpool.Pool {
 func resetDB(t *testing.T, p *pgxpool.Pool) {
 	t.Helper()
 	_, err := p.Exec(context.Background(),
-		`TRUNCATE summary_actions, sink_deliveries, summaries, transcripts, videos, users CASCADE`)
+		`TRUNCATE login_events, summary_actions, sink_deliveries, summaries, transcripts, videos, users CASCADE`)
 	require.NoError(t, err)
 }
 

internal/adapters/store/summarize_mode_test.go

@@ -3,6 +3,7 @@ package store_test
 import (
 	"context"
 	"testing"
+	"time"
 
 	"github.com/jackc/pgx/v5/pgxpool"
 	"github.com/stretchr/testify/require"
@@ -45,6 +46,27 @@ func TestAutoSummarizeRoundTripDefaultsFalse(t *testing.T) {
 	require.False(t, got, "set back to manual round-trips")
 }
 
+func TestRegisteredUserDefaultsAutoSummarizeOn(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	resetDB(t, rawPool(t))
+
+	// A real registration creates the users row, so the column default (migration
+	// 011: TRUE) drives the mode — onboarded friends get auto out of the box.
+	id, err := s.RegisterUser(ctx, subjectA, "Alice")
+	require.NoError(t, err)
+
+	got, err := s.GetAutoSummarize(ctx, id)
+	require.NoError(t, err)
+	require.True(t, got, "new registrations default to auto-summarize (ADR-018)")
+
+	// The account-page toggle still works: a user can switch to manual.
+	require.NoError(t, s.SetAutoSummarize(ctx, id, false))
+	got, err = s.GetAutoSummarize(ctx, id)
+	require.NoError(t, err)
+	require.False(t, got, "the manual toggle still flips it off")
+}
+
 func TestRequestSummarizeSetsFlag(t *testing.T) {
 	ctx := context.Background()
 	s := newStore(t)
@@ -104,6 +126,39 @@ func TestListVideosReturnsSummarizedAndUnsummarized(t *testing.T) {
 	require.True(t, byID[videoY].SummarizeRequested, "queued video carries the flag")
 }
 
+// TestListVideosOrderedByPublishedDescNullsLast: summarized videos sort first
+// (regardless of their date), then unsummarized by published_at DESC with
+// undated (NULL) videos last — the recency-aligned list order (UX review B2).
+func TestListVideosOrderedByPublishedDescNullsLast(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	p := rawPool(t)
+	resetDB(t, p)
+
+	const (
+		vSummOld = "cccccccc-cccc-cccc-cccc-cccccccccccc" // summarized, oldest date
+		vNewer   = "dddddddd-dddd-dddd-dddd-dddddddddddd" // unsummarized, newest
+		vOlder   = "eeeeeeee-eeee-eeee-eeee-eeeeeeeeeeee" // unsummarized, older
+		vUndated = "ffffffff-ffff-ffff-ffff-ffffffffffff" // unsummarized, no date
+	)
+	// Deliver first so the userA row exists (the videos FK needs it); the
+	// summarized video carries the OLDEST date yet must still sort first because
+	// it is summarized, proving summarized-first dominates the date sort.
+	require.NoError(t, s.Deliver(ctx, summary(userA, vSummOld, "body")))
+	seedVideo(t, p, userA, vSummOld, "Summarized Old", "youtube", "https://s", time.Date(2025, 1, 1, 0, 0, 0, 0, time.UTC))
+	seedVideo(t, p, userA, vNewer, "Newer", "youtube", "https://n", time.Date(2026, 3, 1, 0, 0, 0, 0, time.UTC))
+	seedVideo(t, p, userA, vOlder, "Older", "youtube", "https://o", time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC))
+	seedVideo(t, p, userA, vUndated, "Undated", "youtube", "https://u", time.Time{})
+
+	rows, err := s.ListVideos(ctx, userA, 50)
+	require.NoError(t, err)
+	require.Len(t, rows, 4)
+
+	got := []string{rows[0].VideoID, rows[1].VideoID, rows[2].VideoID, rows[3].VideoID}
+	require.Equal(t, []string{vSummOld, vNewer, vOlder, vUndated}, got,
+		"summarized first, then published_at DESC, NULL dates last")
+}
+
 func TestListVideosIsUserScoped(t *testing.T) {
 	ctx := context.Background()
 	s := newStore(t)

internal/adapters/store/transcript.go

@@ -0,0 +1,66 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"github.com/jackc/pgx/v5"
+
+	"gitea.d-ma.be/mathias/tapir/internal/domain"
+)
+
+// GetTranscript returns the shared, stored transcript for a video keyed by the
+// cross-user dedup key (provider, providerVideoID), and whether one exists
+// (ADR-021). It reads via the raw pool, NOT withUser: the table holds public
+// content with no user_id and no RLS policy, so it is shared across users by
+// construction. A stored SourceNone is a real hit (ok == true, HasText() ==
+// false) — a known caption-less video, so the caller skips without re-fetching.
+func (s *Store) GetTranscript(ctx context.Context, provider, providerVideoID string) (domain.Transcript, bool, error) {
+	var source, lang, content string
+	err := s.pool.QueryRow(ctx,
+		`SELECT source, COALESCE(language, ''), COALESCE(content, '')
+		   FROM transcripts WHERE provider = $1 AND provider_video_id = $2`,
+		provider, providerVideoID).Scan(&source, &lang, &content)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return domain.Transcript{}, false, nil
+	}
+	if err != nil {
+		return domain.Transcript{}, false, fmt.Errorf("store: get transcript: %w", err)
+	}
+	return domain.Transcript{
+		Source:   domain.TranscriptSource(source),
+		Language: lang,
+		Content:  content,
+	}, true, nil
+}
+
+// SaveTranscript upserts the shared transcript for (provider, providerVideoID).
+// Only terminal outcomes belong here: SourceCaptions (with text) or SourceNone
+// (no captions). A transient SourceRateLimited is rejected so persistence never
+// masks a 429 as a permanent absence — that stays a per-user retry (ADR-014).
+// Last write wins on conflict (a later re-fetch may correct an entry). It writes
+// via the raw pool, NOT withUser — public content, shared, non-RLS (ADR-021).
+func (s *Store) SaveTranscript(ctx context.Context, provider, providerVideoID string, t domain.Transcript) error {
+	switch t.Source {
+	case domain.SourceCaptions, domain.SourceNone:
+		// terminal — persist
+	case domain.SourceRateLimited:
+		return fmt.Errorf("store: refusing to persist transient rate-limited transcript for %s/%s", provider, providerVideoID)
+	default:
+		return fmt.Errorf("store: invalid transcript source %q", t.Source)
+	}
+	_, err := s.pool.Exec(ctx,
+		`INSERT INTO transcripts (provider, provider_video_id, source, language, content)
+		      VALUES ($1, $2, $3, NULLIF($4, ''), NULLIF($5, ''))
+		 ON CONFLICT (provider, provider_video_id)
+		 DO UPDATE SET source     = EXCLUDED.source,
+		               language   = EXCLUDED.language,
+		               content    = EXCLUDED.content,
+		               fetched_at = NOW()`,
+		provider, providerVideoID, string(t.Source), t.Language, t.Content)
+	if err != nil {
+		return fmt.Errorf("store: save transcript: %w", err)
+	}
+	return nil
+}

internal/adapters/store/transcript_test.go

@@ -0,0 +1,87 @@
+package store_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
+	"gitea.d-ma.be/mathias/tapir/internal/domain"
+	"gitea.d-ma.be/mathias/tapir/internal/ports"
+)
+
+// Static check: Store satisfies the shared TranscriptStore port (ADR-021).
+var _ ports.TranscriptStore = (*store.Store)(nil)
+
+func TestSaveAndGetTranscript_RoundTrip(t *testing.T) {
+	s := newStore(t)
+	resetDB(t, rawPool(t))
+	ctx := context.Background()
+
+	want := domain.Transcript{Source: domain.SourceCaptions, Language: "en", Content: "the words"}
+	require.NoError(t, s.SaveTranscript(ctx, "youtube", "vid-1", want))
+
+	got, ok, err := s.GetTranscript(ctx, "youtube", "vid-1")
+	require.NoError(t, err)
+	require.True(t, ok, "a saved transcript must be found")
+	require.Equal(t, domain.SourceCaptions, got.Source)
+	require.Equal(t, "en", got.Language)
+	require.Equal(t, "the words", got.Content)
+	require.True(t, got.HasText())
+}
+
+func TestGetTranscript_Miss(t *testing.T) {
+	s := newStore(t)
+	resetDB(t, rawPool(t))
+
+	_, ok, err := s.GetTranscript(context.Background(), "youtube", "absent")
+	require.NoError(t, err, "a miss is not an error")
+	require.False(t, ok)
+}
+
+// A stored "no captions" outcome is a real hit: callers must skip without
+// re-fetching, so ok is true even though there is no text (ADR-021 / ADR-007).
+func TestSaveAndGetTranscript_NoneIsAStoredHit(t *testing.T) {
+	s := newStore(t)
+	resetDB(t, rawPool(t))
+	ctx := context.Background()
+
+	require.NoError(t, s.SaveTranscript(ctx, "youtube", "vid-none", domain.Transcript{Source: domain.SourceNone}))
+
+	got, ok, err := s.GetTranscript(ctx, "youtube", "vid-none")
+	require.NoError(t, err)
+	require.True(t, ok, "a stored SourceNone is a hit, not a miss")
+	require.Equal(t, domain.SourceNone, got.Source)
+	require.False(t, got.HasText())
+}
+
+// A transient 429 must never be persisted as a terminal transcript, or a later
+// read would mask the rate-limit as a permanent "no transcript" (ADR-014).
+func TestSaveTranscript_RejectsRateLimited(t *testing.T) {
+	s := newStore(t)
+	resetDB(t, rawPool(t))
+
+	err := s.SaveTranscript(context.Background(), "youtube", "vid-429",
+		domain.Transcript{Source: domain.SourceRateLimited})
+	require.Error(t, err)
+
+	_, ok, _ := s.GetTranscript(context.Background(), "youtube", "vid-429")
+	require.False(t, ok, "a rejected rate-limited save must leave nothing stored")
+}
+
+func TestSaveTranscript_UpsertLastWriteWins(t *testing.T) {
+	s := newStore(t)
+	resetDB(t, rawPool(t))
+	ctx := context.Background()
+
+	require.NoError(t, s.SaveTranscript(ctx, "youtube", "vid-up", domain.Transcript{Source: domain.SourceNone}))
+	require.NoError(t, s.SaveTranscript(ctx, "youtube", "vid-up",
+		domain.Transcript{Source: domain.SourceCaptions, Language: "en", Content: "now resolved"}))
+
+	got, ok, err := s.GetTranscript(ctx, "youtube", "vid-up")
+	require.NoError(t, err)
+	require.True(t, ok)
+	require.Equal(t, domain.SourceCaptions, got.Source)
+	require.Equal(t, "now resolved", got.Content)
+}

internal/adapters/store/videos.go

@@ -46,14 +46,15 @@ func (s *Store) UpsertVideo(ctx context.Context, v domain.Video) (string, error)
 		}
 
 		if err := tx.QueryRow(ctx,
-			`INSERT INTO videos (user_id, provider, provider_video_id, title, url, published_at)
-			 VALUES ($1, $2, $3, $4, $5, $6)
+			`INSERT INTO videos (user_id, provider, provider_video_id, title, url, published_at, channel_title)
+			 VALUES ($1, $2, $3, $4, $5, $6, $7)
 			 ON CONFLICT (user_id, provider, provider_video_id) DO UPDATE SET
-			     title        = EXCLUDED.title,
-			     url          = EXCLUDED.url,
-			     published_at = EXCLUDED.published_at
+			     title         = EXCLUDED.title,
+			     url           = EXCLUDED.url,
+			     published_at  = EXCLUDED.published_at,
+			     channel_title = COALESCE(NULLIF(EXCLUDED.channel_title, ''), videos.channel_title)
 			 RETURNING id`,
-			v.UserID, provider, v.ProviderVideoID, v.Title, v.URL, nullTime(v.PublishedAt),
+			v.UserID, provider, v.ProviderVideoID, v.Title, v.URL, nullTime(v.PublishedAt), v.ChannelTitle,
 		).Scan(&id); err != nil {
 			return fmt.Errorf("store: upsert video: %w", err)
 		}
@@ -72,3 +73,69 @@ func nullTime(t time.Time) *time.Time {
 	}
 	return &t
 }
+
+// NewestUnsummarizedVideoIDs returns up to limit of the user's videos that have
+// no summary yet, newest first (published_at DESC, NULLS LAST). It caps the
+// connect-time onboarding burst (Feature 1) at a fixed count: the caller marks
+// these for summarization through the shared rate gate. RLS-scoped via withUser,
+// so it only ever sees the requesting user's rows. limit <= 0 returns nil.
+func (s *Store) NewestUnsummarizedVideoIDs(ctx context.Context, userID string, limit int) ([]string, error) {
+	if limit <= 0 {
+		return nil, nil
+	}
+	var ids []string
+	if err := s.withUser(ctx, userID, func(tx pgx.Tx) error {
+		rows, err := tx.Query(ctx,
+			`SELECT v.id
+			   FROM videos v
+			  WHERE v.user_id = $1
+			    AND NOT EXISTS (
+			          SELECT 1 FROM summaries su
+			           WHERE su.user_id = v.user_id AND su.video_id = v.id)
+			  ORDER BY v.published_at DESC NULLS LAST, v.seen_at DESC
+			  LIMIT $2`, userID, limit)
+		if err != nil {
+			return fmt.Errorf("store: newest unsummarized: %w", err)
+		}
+		defer rows.Close()
+		for rows.Next() {
+			var id string
+			if err := rows.Scan(&id); err != nil {
+				return fmt.Errorf("store: scan newest unsummarized: %w", err)
+			}
+			ids = append(ids, id)
+		}
+		return rows.Err()
+	}); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// DistinctChannels returns the user's distinct, non-empty source channel titles
+// (the channels they have videos from), alphabetically — the option list for the
+// feed's channel filter. RLS-scoped via withUser.
+func (s *Store) DistinctChannels(ctx context.Context, userID string) ([]string, error) {
+	var out []string
+	if err := s.withUser(ctx, userID, func(tx pgx.Tx) error {
+		rows, err := tx.Query(ctx,
+			`SELECT DISTINCT channel_title FROM videos
+			  WHERE user_id = $1 AND channel_title IS NOT NULL AND channel_title <> ''
+			  ORDER BY channel_title`, userID)
+		if err != nil {
+			return fmt.Errorf("store: distinct channels: %w", err)
+		}
+		defer rows.Close()
+		for rows.Next() {
+			var c string
+			if err := rows.Scan(&c); err != nil {
+				return fmt.Errorf("store: scan channel: %w", err)
+			}
+			out = append(out, c)
+		}
+		return rows.Err()
+	}); err != nil {
+		return nil, err
+	}
+	return out, nil
+}

internal/adapters/store/videos_test.go

@@ -81,3 +81,61 @@ func TestUpsertVideo_PerUserIsolation(t *testing.T) {
 
 	require.NotEqual(t, idA, idB, "same provider video for two users must be two distinct rows")
 }
+
+func TestNewestUnsummarizedVideoIDs(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	resetDB(t, rawPool(t))
+
+	mk := func(user, pid string, day int) string {
+		v := ytVideo(user, pid, pid)
+		v.PublishedAt = time.Date(2026, 6, day, 12, 0, 0, 0, time.UTC)
+		id, err := s.UpsertVideo(ctx, v)
+		require.NoError(t, err)
+		return id
+	}
+
+	_ = mk(userA, "a1vid000001", 1)
+	id2 := mk(userA, "a2vid000002", 2)
+	id3 := mk(userA, "a3vid000003", 3)
+	id4 := mk(userA, "a4vid000004", 4)
+	mk(userB, "b1vid000009", 9) // userB's newest — must never leak via RLS
+
+	// The newest (v4) is summarized, so it's excluded from "unsummarized".
+	require.NoError(t, s.Deliver(ctx, summary(userA, id4, "done")))
+
+	// Cap 2, newest-first unsummarized: v3 then v2 (v4 excluded; userB excluded).
+	got, err := s.NewestUnsummarizedVideoIDs(ctx, userA, 2)
+	require.NoError(t, err)
+	require.Equal(t, []string{id3, id2}, got)
+
+	none, err := s.NewestUnsummarizedVideoIDs(ctx, userA, 0)
+	require.NoError(t, err)
+	require.Empty(t, none, "limit 0 returns nothing")
+}
+
+func TestUpsertVideoPersistsChannelAndDistinctChannels(t *testing.T) {
+	ctx := context.Background()
+	s := newStore(t)
+	resetDB(t, rawPool(t))
+
+	mk := func(pid, channel string) {
+		v := ytVideo(userA, pid, pid)
+		v.ChannelTitle = channel
+		_, err := s.UpsertVideo(ctx, v)
+		require.NoError(t, err)
+	}
+	mk("aa11111aaaa", "Acme Talks")
+	mk("bb22222bbbb", "Acme Talks") // same channel
+	mk("cc33333cccc", "Zeta Channel")
+	// userB's channel must not leak.
+	vb := ytVideo(userB, "dd44444dddd", "x")
+	vb.ChannelTitle = "Bravo Only"
+	_, err := s.UpsertVideo(ctx, vb)
+	require.NoError(t, err)
+
+	got, err := s.DistinctChannels(ctx, userA)
+	require.NoError(t, err)
+	require.Equal(t, []string{"Acme Talks", "Zeta Channel"}, got,
+		"distinct, alphabetical, user-scoped (no Bravo Only)")
+}

internal/adapters/summarizer/summarizer.go

@@ -1,17 +1,21 @@
 // Package summarizer implements ports.Summarizer backed by the copied llm
-// package's local-Primary -> BYO-Fallback routing (ADR-004). It is the only
-// place content ever leaves the engine toward an AI model, so it is also the
-// enforcement point for the local-first guarantee in
-// docs/use-cases/ai_routing.feature: a user with no BYO provider configured has
-// their content sent to the local stack and nowhere else.
+// package's routing (ADR-004, extended by ADR-022). It is the only place content
+// ever leaves the engine toward an AI model, so it is also the enforcement point
+// for the local-first guarantee in docs/use-cases/ai_routing.feature: endpoints
+// are tried in order, locals first, so content only reaches an external model
+// after every local endpoint has failed — and never at all when no external
+// endpoint is configured.
 package summarizer
 
 import (
+	"bytes"
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"strings"
 	"time"
+	"unicode/utf8"
 
 	"gitea.d-ma.be/mathias/tapir/internal/domain"
 )
@@ -29,19 +33,41 @@ type Endpoint struct {
 	Model    string // resolved alias, e.g. "iguana/deepseek-r1-14b"
 }
 
-// Summarizer routes a transcript through the local endpoint first, then the
-// optional BYO endpoint. It owns its routing (rather than delegating to
-// llm.Router) so it can record which provider answered and whether the fallback
-// was used — information llm.Router collapses away.
+// Summarizer routes a transcript through an ordered chain of endpoints, trying
+// each in turn until one returns a parseable summary. It owns its routing
+// (rather than delegating to llm.Router) so it can record which provider answered
+// and whether a fallback was used — information llm.Router collapses away. The
+// chain ordering is the local-first guarantee: callers place local endpoints
+// first and any external endpoint last, so content only reaches an external model
+// after every local endpoint has failed.
 type Summarizer struct {
-	primary  Endpoint
-	fallback *Endpoint // nil => no BYO; primary errors are returned, never sent externally
-	now      func() time.Time
+	endpoints     []Endpoint
+	maxInputChars int // transcript truncation budget; 0 = no limit
+	now           func() time.Time
 }
 
-// New constructs a Summarizer. fallback may be nil (no BYO provider configured).
+// New constructs a Summarizer from a primary endpoint and an optional fallback
+// (the historical local-Primary -> BYO-Fallback shape, ADR-004). A nil fallback
+// means a single-endpoint chain: errors are returned, content never leaves it.
 func New(primary Endpoint, fallback *Endpoint) *Summarizer {
-	return &Summarizer{primary: primary, fallback: fallback, now: time.Now}
+	eps := []Endpoint{primary}
+	if fallback != nil {
+		eps = append(eps, *fallback)
+	}
+	return &Summarizer{endpoints: eps, now: time.Now}
+}
+
+// NewChain constructs a Summarizer over an ordered endpoint chain (ADR-022).
+// endpoints are tried in order; the first to return a parseable summary wins, and
+// FallbackUsed is recorded true for any endpoint past the first. maxInputChars
+// bounds the transcript text sent to every endpoint (0 = unbounded), so a long
+// transcript does not overflow a small-context primary model's window. It panics
+// on an empty chain — a wiring bug, not a runtime condition.
+func NewChain(endpoints []Endpoint, maxInputChars int) *Summarizer {
+	if len(endpoints) == 0 {
+		panic("summarizer: NewChain requires at least one endpoint")
+	}
+	return &Summarizer{endpoints: endpoints, maxInputChars: maxInputChars, now: time.Now}
 }
 
 const systemPrompt = `You are Tapir, a video-summarization assistant.
@@ -53,31 +79,35 @@ Respond with ONLY a JSON object, no prose and no code fences:
 - "takeaways": the actionable conclusions a viewer should leave with.
 Output the JSON object and nothing else.`
 
-// Summarize implements ports.Summarizer.
+// Summarize implements ports.Summarizer. It walks the endpoint chain in order:
+// the first endpoint whose reply parses into a non-empty summary wins. An
+// endpoint is considered failed — and the next one tried — when the model call
+// errors OR when its reply cannot be parsed (a 200 with malformed JSON or a
+// highlights field the model emitted as a bare string). Truncation is applied
+// once, up front, so every endpoint sees the same bounded prompt. When the whole
+// chain fails, the joined error is returned so the engine queues the work for
+// retry and delivers no summary.
 func (s *Summarizer) Summarize(ctx context.Context, v domain.Video, t domain.Transcript) (domain.Summary, error) {
 	if !t.HasText() {
 		return domain.Summary{}, fmt.Errorf("summarize: transcript for video %s has no text", v.ID)
 	}
-	user := buildUserPrompt(v, t)
+	user := buildUserPrompt(v, t, s.maxInputChars)
 
-	// Primary = local stack. Only on its failure is anything sent externally,
-	// and only when a BYO fallback is configured.
-	out, err := s.primary.Client.Complete(ctx, systemPrompt, user)
-	if err == nil {
-		return s.build(v, s.primary, false, out)
+	var errs []error
+	for i, ep := range s.endpoints {
+		out, err := ep.Client.Complete(ctx, systemPrompt, user)
+		if err != nil {
+			errs = append(errs, fmt.Errorf("%s/%s call: %w", ep.Provider, ep.Model, err))
+			continue
+		}
+		sum, perr := s.build(v, ep, i > 0, out)
+		if perr != nil {
+			errs = append(errs, fmt.Errorf("%s/%s output: %w", ep.Provider, ep.Model, perr))
+			continue
+		}
+		return sum, nil
 	}
-
-	if s.fallback == nil {
-		// No BYO: content was sent to the local stack only. Surface the error so
-		// the engine can queue the work for retry; deliver no summary.
-		return domain.Summary{}, fmt.Errorf("summarize: local AI failed and no BYO provider configured: %w", err)
-	}
-
-	out, ferr := s.fallback.Client.Complete(ctx, systemPrompt, user)
-	if ferr != nil {
-		return domain.Summary{}, fmt.Errorf("summarize: local AI failed: %w; BYO %s failed: %v", err, s.fallback.Provider, ferr)
-	}
-	return s.build(v, *s.fallback, true, out)
+	return domain.Summary{}, fmt.Errorf("summarize: all %d endpoint(s) failed: %w", len(s.endpoints), errors.Join(errs...))
 }
 
 func (s *Summarizer) build(v domain.Video, ep Endpoint, fallbackUsed bool, raw string) (domain.Summary, error) {
@@ -89,8 +119,8 @@ func (s *Summarizer) build(v domain.Video, ep Endpoint, fallbackUsed bool, raw s
 		UserID:       v.UserID,
 		VideoID:      v.ID,
 		Summary:      parsed.Summary,
-		Highlights:   parsed.Highlights,
-		Takeaways:    parsed.Takeaways,
+		Highlights:   []string(parsed.Highlights),
+		Takeaways:    []string(parsed.Takeaways),
 		AIProvider:   ep.Provider,
 		AIModel:      ep.Model,
 		FallbackUsed: fallbackUsed,
@@ -98,20 +128,94 @@ func (s *Summarizer) build(v domain.Video, ep Endpoint, fallbackUsed bool, raw s
 	}, nil
 }
 
-func buildUserPrompt(v domain.Video, t domain.Transcript) string {
+func buildUserPrompt(v domain.Video, t domain.Transcript, maxInputChars int) string {
 	var b strings.Builder
 	fmt.Fprintf(&b, "Title: %s\n", v.Title)
 	if v.URL != "" {
 		fmt.Fprintf(&b, "URL: %s\n", v.URL)
 	}
-	fmt.Fprintf(&b, "\nTranscript:\n%s", t.Content)
+	fmt.Fprintf(&b, "\nTranscript:\n%s", truncate(t.Content, maxInputChars))
 	return b.String()
 }
 
+// truncate caps content to max bytes on a UTF-8 rune boundary, appending a
+// marker so the model knows the transcript was cut. A non-positive max (or a
+// content already within budget) returns content unchanged. Bounding the input
+// keeps a long transcript from overflowing a small-context model's window — the
+// production failure mode where koala/phi4-mini's 8k context returned HTTP 400 on
+// a 11.6k-token transcript.
+func truncate(content string, max int) string {
+	if max <= 0 || len(content) <= max {
+		return content
+	}
+	cut := max
+	for cut > 0 && !utf8.RuneStart(content[cut]) {
+		cut--
+	}
+	return content[:cut] + "\n…[transcript truncated to fit the model context]"
+}
+
+// flexStrings is a []string that also unmarshals from a single JSON string or a
+// JSON array of scalars. Small local models (koala/phi4-mini) sometimes emit
+// "highlights": "one point" instead of an array, or mix in a number; rather than
+// fail the whole summary on that quirk, coerce to []string. Empty/whitespace
+// elements are dropped.
+type flexStrings []string
+
+func (f *flexStrings) UnmarshalJSON(b []byte) error {
+	b = bytes.TrimSpace(b)
+	if len(b) == 0 || string(b) == "null" {
+		*f = nil
+		return nil
+	}
+	if b[0] == '[' {
+		var raw []json.RawMessage
+		if err := json.Unmarshal(b, &raw); err != nil {
+			return err
+		}
+		out := make([]string, 0, len(raw))
+		for _, r := range raw {
+			s, err := rawToString(r)
+			if err != nil {
+				return err
+			}
+			if strings.TrimSpace(s) != "" {
+				out = append(out, s)
+			}
+		}
+		*f = out
+		return nil
+	}
+	s, err := rawToString(b)
+	if err != nil {
+		return err
+	}
+	if strings.TrimSpace(s) == "" {
+		*f = nil
+	} else {
+		*f = flexStrings{s}
+	}
+	return nil
+}
+
+// rawToString renders a JSON scalar as text: a quoted string is unquoted; any
+// other scalar (number, bool) is kept as its literal source so no content is lost.
+func rawToString(r json.RawMessage) (string, error) {
+	r = bytes.TrimSpace(r)
+	if len(r) > 0 && r[0] == '"' {
+		var s string
+		if err := json.Unmarshal(r, &s); err != nil {
+			return "", err
+		}
+		return s, nil
+	}
+	return string(r), nil
+}
+
 type parsedSummary struct {
-	Summary    string   `json:"summary"`
-	Highlights []string `json:"highlights"`
-	Takeaways  []string `json:"takeaways"`
+	Summary    string      `json:"summary"`
+	Highlights flexStrings `json:"highlights"`
+	Takeaways  flexStrings `json:"takeaways"`
 }
 
 // parse extracts the JSON object from a model reply. Thinking models (qwen3,

internal/adapters/summarizer/summarizer_test.go

@@ -129,8 +129,8 @@ func TestSummarize_NoBYO_ContentOnlyLocal(t *testing.T) {
 	local := &fakeClient{reply: goodReply}
 	s := New(Endpoint{Client: local, Provider: "local", Model: "iguana/deepseek-r1-14b"}, nil)
 
-	if s.fallback != nil {
-		t.Fatal("no BYO configured but fallback endpoint is non-nil")
+	if len(s.endpoints) != 1 {
+		t.Fatalf("no BYO configured but chain has %d endpoints, want 1", len(s.endpoints))
 	}
 	for i := 0; i < 3; i++ {
 		sum, err := s.Summarize(context.Background(), testVideo(), testTranscript())
@@ -176,3 +176,97 @@ func TestParse_EmptySummaryRejected(t *testing.T) {
 		t.Fatal("want error for empty summary (thinking model returned no content)")
 	}
 }
+
+// parse tolerates a small model emitting "highlights" as a bare string instead
+// of an array — the production koala/phi4-mini quirk that errored with
+// "cannot unmarshal string into Go struct field ... highlights of type []string".
+func TestParse_ToleratesStringHighlights(t *testing.T) {
+	p, err := parse(`{"summary":"s","highlights":"one big point","takeaways":["a","b"]}`)
+	if err != nil {
+		t.Fatalf("parse: %v", err)
+	}
+	if len(p.Highlights) != 1 || p.Highlights[0] != "one big point" {
+		t.Errorf("highlights = %v, want [\"one big point\"]", p.Highlights)
+	}
+	if len(p.Takeaways) != 2 {
+		t.Errorf("takeaways = %v, want 2", p.Takeaways)
+	}
+}
+
+// Chain: an endpoint that returns a 200 with unparseable output is treated as a
+// failure, and the next endpoint in the chain is tried. This is the case the old
+// primary->fallback shape missed — a parse error short-circuited instead of
+// falling back.
+func TestSummarize_FallsBackOnMalformedOutput(t *testing.T) {
+	bad := &fakeClient{reply: `{"summary": not json`}
+	good := &fakeClient{reply: goodReply}
+	s := NewChain([]Endpoint{
+		{Client: bad, Provider: "local", Model: "koala/phi4-mini"},
+		{Client: good, Provider: "local", Model: "koala/phi4-14b"},
+	}, 0)
+
+	sum, err := s.Summarize(context.Background(), testVideo(), testTranscript())
+	if err != nil {
+		t.Fatalf("Summarize: %v", err)
+	}
+	if sum.AIModel != "koala/phi4-14b" {
+		t.Errorf("AIModel = %q, want koala/phi4-14b (fell back past malformed primary)", sum.AIModel)
+	}
+	if !sum.FallbackUsed {
+		t.Error("FallbackUsed = false, want true")
+	}
+	if bad.calls != 1 || good.calls != 1 {
+		t.Errorf("calls: bad=%d good=%d, want 1 and 1", bad.calls, good.calls)
+	}
+}
+
+// Chain: when every endpoint fails, no summary is produced and the joined error
+// names each failure so the engine queues the work for retry.
+func TestSummarize_ChainAllEndpointsFail(t *testing.T) {
+	a := &fakeClient{err: errors.New("context overflow")}
+	b := &fakeClient{reply: "not even json"}
+	s := NewChain([]Endpoint{
+		{Client: a, Provider: "local", Model: "m1"},
+		{Client: b, Provider: "berget", Model: "m2"},
+	}, 0)
+
+	if _, err := s.Summarize(context.Background(), testVideo(), testTranscript()); err == nil {
+		t.Fatal("want error when all endpoints fail")
+	}
+	if a.calls != 1 || b.calls != 1 {
+		t.Errorf("calls: a=%d b=%d, want 1 and 1", a.calls, b.calls)
+	}
+}
+
+// A transcript longer than the chain's input budget is truncated before it
+// reaches any model, so a small-context primary does not overflow its window.
+func TestSummarize_TruncatesLongTranscript(t *testing.T) {
+	local := &fakeClient{reply: goodReply}
+	const budget = 100
+	s := NewChain([]Endpoint{{Client: local, Provider: "local", Model: "m"}}, budget)
+
+	long := domain.Transcript{
+		VideoID: "vid-1", UserID: "user-1", Source: domain.SourceCaptions,
+		Content: strings.Repeat("word ", 1000), // 5000 bytes, well over budget
+	}
+	if _, err := s.Summarize(context.Background(), testVideo(), long); err != nil {
+		t.Fatalf("Summarize: %v", err)
+	}
+	// The prompt carries title/URL framing plus the truncation marker, so allow
+	// headroom over the raw transcript budget — but it must be far below 5000.
+	if len(local.lastUser) > budget+300 {
+		t.Errorf("prompt length = %d, want <= %d (transcript not truncated)", len(local.lastUser), budget+300)
+	}
+	if !strings.Contains(local.lastUser, "truncated") {
+		t.Error("truncation marker missing from prompt")
+	}
+}
+
+func TestNewChain_PanicsOnEmptyChain(t *testing.T) {
+	defer func() {
+		if recover() == nil {
+			t.Fatal("want panic on empty endpoint chain")
+		}
+	}()
+	NewChain(nil, 0)
+}

internal/adapters/youtube/captions.go

@@ -235,6 +235,15 @@ func (a *Adapter) httpDo(ctx context.Context, client *http.Client, method, url s
 	for k, v := range headers {
 		req.Header.Set(k, v)
 	}
+	// Process-wide rate gate (ADR-014 item 2): every live caption fetch — player,
+	// watch-page, and timedtext baseUrl — passes the shared per-egress-IP limiter
+	// so the scheduler and the click-path cannot collectively trip 429s. Skipped
+	// when a.transport is set (the test seam) so fakes are not throttled.
+	if a.transport == nil {
+		if err := WaitFetchGate(ctx); err != nil {
+			return nil, 0, fmt.Errorf("fetch gate %s %s: %w", method, url, err)
+		}
+	}
 	resp, err := client.Do(req)
 	if err != nil {
 		return nil, 0, fmt.Errorf("%s %s: %w", method, url, err)

internal/adapters/youtube/gate.go

@@ -0,0 +1,84 @@
+package youtube
+
+import (
+	"context"
+	"sync/atomic"
+	"time"
+
+	"golang.org/x/time/rate"
+)
+
+// globalFetchGate is the process-wide rate limiter for outbound timedtext/caption
+// fetches. A single instance is shared by ALL Adapter instances (the scheduler's
+// per-user runners + the web click-path) so they cannot collectively exceed the
+// per-egress-IP cap. ADR-014 item 2: the gate serialises/limits concurrent caption
+// fetches regardless of how many users or goroutines are upstream. The 429 is per
+// IP, not per user — so the gate is process-wide, not per-withUser, not per-video.
+//
+// Default 2s/req (burst 1): the first fetch passes immediately, subsequent fetches
+// are spaced at least 2s apart. Production overrides via SetFetchRate from config.
+var globalFetchGate = rate.NewLimiter(rate.Every(2*time.Second), 1)
+
+// SetFetchRate replaces the process-wide gate's rate with one token per interval.
+// Call once at startup from config (TAPIR_FETCH_RATE). A non-positive interval
+// installs an unlimited gate (rate.Inf) — used in dev/tests so nothing throttles.
+func SetFetchRate(interval time.Duration) {
+	if interval <= 0 {
+		globalFetchGate = rate.NewLimiter(rate.Inf, 1)
+		return
+	}
+	globalFetchGate = rate.NewLimiter(rate.Every(interval), 1)
+}
+
+// foregroundPending counts in-flight foreground (user-initiated) caption fetches.
+// The background sweep yields the gate while this is non-zero so a human waiting
+// on a click gets the next slot — and, on a near-throttled IP, the pre-429 window
+// — instead of competing equally with the firehose (ADR-026, Pillar A). Clicks are
+// rare and bursty, so background barely notices; the win to the click is large.
+var foregroundPending atomic.Int64
+
+// fgCtxKey marks a context as foreground (user-initiated). Unexported; set via
+// ForegroundContext and read via isForeground so only this package owns the key.
+type fgCtxKey struct{}
+
+// ForegroundContext marks ctx as a user-initiated (foreground) fetch so the gate
+// gives it priority. The web "Summarize"/paste/retry path wraps its context with
+// this; the background scheduler leaves it unset.
+func ForegroundContext(ctx context.Context) context.Context {
+	return context.WithValue(ctx, fgCtxKey{}, true)
+}
+
+func isForeground(ctx context.Context) bool {
+	v, _ := ctx.Value(fgCtxKey{}).(bool)
+	return v
+}
+
+// fgYieldPoll is how often a background waiter re-checks whether a foreground
+// fetch is still pending. Short enough to feel immediate, long enough not to spin.
+const fgYieldPoll = 200 * time.Millisecond
+
+// WaitFetchGate blocks until the process-wide gate allows one timedtext fetch,
+// respecting ctx cancellation. Called from httpDo before every live outbound
+// caption fetch so the scheduler and the click-path share the same egress budget.
+//
+// Foreground (user-initiated) fetches take priority: they register as pending and
+// acquire a token immediately. Background fetches first yield — they wait until no
+// foreground fetch is pending — so a live click is never stuck behind the
+// background sweep and gets the cleaner slot against the per-IP limit (ADR-026).
+func WaitFetchGate(ctx context.Context) error {
+	if isForeground(ctx) {
+		foregroundPending.Add(1)
+		defer foregroundPending.Add(-1)
+		return globalFetchGate.Wait(ctx)
+	}
+
+	// Background: defer to any pending foreground fetch before taking a token.
+	for foregroundPending.Load() > 0 {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		case <-time.After(fgYieldPoll):
+		}
+	}
+	return globalFetchGate.Wait(ctx)
+}

internal/adapters/youtube/gate_test.go

@@ -0,0 +1,118 @@
+package youtube
+
+import (
+	"context"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+	"golang.org/x/time/rate"
+)
+
+// waitOn drives a test-scoped limiter the same way WaitFetchGate drives the
+// global one, so these tests exercise the gate's behaviour without mutating the
+// process-wide gate (which would pollute sibling tests / the click-path).
+func waitOn(t *testing.T, lim *rate.Limiter) func(context.Context) error {
+	t.Helper()
+	return func(ctx context.Context) error { return lim.Wait(ctx) }
+}
+
+func TestFetchGateSerialisesConcurrentCallers(t *testing.T) {
+	const (
+		n        = 5
+		interval = 10 * time.Millisecond
+	)
+	lim := rate.NewLimiter(rate.Every(interval), 1)
+	wait := waitOn(t, lim)
+
+	var (
+		inFlight, maxInFlight atomic.Int32
+		wg                    sync.WaitGroup
+	)
+	start := time.Now()
+	for i := 0; i < n; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			require.NoError(t, wait(context.Background()))
+			cur := inFlight.Add(1)
+			for {
+				old := maxInFlight.Load()
+				if cur <= old || maxInFlight.CompareAndSwap(old, cur) {
+					break
+				}
+			}
+			// Hold the "critical section" briefly so overlap would be observable.
+			time.Sleep(interval / 4)
+			inFlight.Add(-1)
+		}()
+	}
+	wg.Wait()
+	elapsed := time.Since(start)
+
+	require.Equal(t, int32(1), maxInFlight.Load(),
+		"the gate must admit at most one caller per interval — no overlap")
+	require.GreaterOrEqual(t, elapsed, time.Duration(n-1)*interval,
+		"N gated callers take at least (N-1)*interval wall time")
+}
+
+func TestFetchGateRespectsContextCancellation(t *testing.T) {
+	// A slow gate (1 token/hour, burst already spent) blocks; a cancelled ctx must
+	// unblock Wait with an error rather than hang.
+	lim := rate.NewLimiter(rate.Every(time.Hour), 1)
+	require.True(t, lim.Allow(), "spend the single burst token")
+
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+	require.Error(t, waitOn(t, lim)(ctx), "cancelled ctx must fail Wait, not block")
+}
+
+func TestSetFetchRateZeroIsUnlimited(t *testing.T) {
+	// Snapshot and restore the global so this test does not pollute the process.
+	prev := globalFetchGate
+	t.Cleanup(func() { globalFetchGate = prev })
+
+	SetFetchRate(0)
+	require.Equal(t, rate.Inf, globalFetchGate.Limit(), "0 interval = unlimited gate")
+
+	// An unlimited gate never blocks, even back-to-back.
+	for i := 0; i < 100; i++ {
+		require.NoError(t, WaitFetchGate(context.Background()))
+	}
+}
+
+func TestForegroundContextMarker(t *testing.T) {
+	require.False(t, isForeground(context.Background()), "plain context is background")
+	require.True(t, isForeground(ForegroundContext(context.Background())), "marked context is foreground")
+}
+
+// TestWaitFetchGateForegroundProceedsImmediately: a foreground fetch acquires a
+// token without yielding, even when background callers exist.
+func TestWaitFetchGateForegroundProceedsImmediately(t *testing.T) {
+	SetFetchRate(0) // unlimited limiter — isolate the yield logic from pacing
+	foregroundPending.Store(0)
+	t.Cleanup(func() { foregroundPending.Store(0) })
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
+	defer cancel()
+	require.NoError(t, WaitFetchGate(ForegroundContext(ctx)), "foreground proceeds immediately")
+}
+
+// TestWaitFetchGateBackgroundYieldsToForeground: while a foreground fetch is
+// pending, a background fetch yields (does not take a token) until the foreground
+// clears — proven by a background wait timing out against its own deadline, then
+// succeeding once the foreground is done.
+func TestWaitFetchGateBackgroundYieldsToForeground(t *testing.T) {
+	SetFetchRate(0)
+	foregroundPending.Store(1) // simulate a foreground fetch in flight
+	t.Cleanup(func() { foregroundPending.Store(0) })
+
+	ctx, cancel := context.WithTimeout(context.Background(), 250*time.Millisecond)
+	defer cancel()
+	require.Error(t, WaitFetchGate(ctx), "background yields (blocks) while foreground is pending")
+
+	foregroundPending.Store(0) // foreground done
+	require.NoError(t, WaitFetchGate(context.Background()), "background proceeds once foreground clears")
+}

internal/adapters/youtube/videobyid_test.go

@@ -0,0 +1,62 @@
+package youtube
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"testing"
+
+	"gitea.d-ma.be/mathias/tapir/internal/domain"
+)
+
+func TestVideoByID(t *testing.T) {
+	const id = "dQw4w9WgXcQ"
+	a, secrets := newTestAdapter(t, func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/videos" {
+			t.Errorf("unexpected path %q (must use videos.list)", r.URL.Path)
+		}
+		if got := r.URL.Query().Get("id"); got != id {
+			t.Errorf("expected id=%s, got %q", id, got)
+		}
+		if got := r.URL.Query().Get("part"); got != "snippet" {
+			t.Errorf("expected part=snippet, got %q", got)
+		}
+		_, _ = w.Write([]byte(`{"items":[{"snippet":{"title":"Never Gonna Give You Up","channelTitle":"Rick Astley","publishedAt":"2026-05-20T09:00:00Z"}}]}`))
+	})
+
+	v, err := a.VideoByID(context.Background(), "u1", id)
+	if err != nil {
+		t.Fatalf("VideoByID: %v", err)
+	}
+	if v.UserID != "u1" {
+		t.Errorf("UserID = %q, want u1", v.UserID)
+	}
+	if v.ProviderVideoID != id || v.Title != "Never Gonna Give You Up" {
+		t.Errorf("unexpected video: %+v", v)
+	}
+	if v.ChannelTitle != "Rick Astley" {
+		t.Errorf("ChannelTitle = %q, want Rick Astley", v.ChannelTitle)
+	}
+	if v.Provider != domain.ProviderYouTube || v.URL != "https://www.youtube.com/watch?v="+id {
+		t.Errorf("video not wired correctly: %+v", v)
+	}
+	if v.PublishedAt.IsZero() {
+		t.Errorf("expected publishedAt parsed, got zero")
+	}
+	if v.SubscriptionID != "" {
+		t.Errorf("a pasted video must have no subscription, got %q", v.SubscriptionID)
+	}
+	if secrets.byRef == nil {
+		t.Errorf("token must be resolved by reference through the SecretStore")
+	}
+}
+
+func TestVideoByIDNotFound(t *testing.T) {
+	a, _ := newTestAdapter(t, func(w http.ResponseWriter, _ *http.Request) {
+		_, _ = w.Write([]byte(`{"items":[]}`))
+	})
+	_, err := a.VideoByID(context.Background(), "u1", "missingvid0")
+	if !errors.Is(err, domain.ErrVideoNotFound) {
+		t.Fatalf("VideoByID for missing id = %v, want domain.ErrVideoNotFound", err)
+	}
+}

internal/adapters/youtube/youtube.go

@@ -66,6 +66,13 @@ type Config struct {
 	// poll. Zero means defaultMaxVideos.
 	MaxVideosPerSubscription int
 
+	// MinVideoSeconds drops videos shorter than this from discovery (Shorts/clips,
+	// ADR-023). NewVideos enriches candidates with a single cheap videos.list call
+	// (contentDetails.duration + snippet.liveBroadcastContent) and filters before
+	// returning, so the scarce caption-fetch budget is never spent on them. Live
+	// and upcoming broadcasts are dropped too. Zero disables the filter.
+	MinVideoSeconds int
+
 	// BaseURL overrides the Data API root. Empty means defaultBaseURL.
 	BaseURL string
 
@@ -216,6 +223,9 @@ func (a *Adapter) NewVideos(ctx context.Context, sub domain.Subscription) ([]dom
 
 	var resp playlistItemListResponse
 	if err := a.getJSON(ctx, client, "/playlistItems", q, &resp); err != nil {
+		if isHTTP404(err) {
+			return nil, &domain.ErrChannelUnavailable{ChannelID: sub.ChannelID, ChannelTitle: sub.ChannelTitle}
+		}
 		return nil, fmt.Errorf("new videos for channel %q: %w", sub.ChannelID, err)
 	}
 
@@ -231,6 +241,7 @@ func (a *Adapter) NewVideos(ctx context.Context, sub domain.Subscription) ([]dom
 			Provider:        domain.ProviderYouTube,
 			ProviderVideoID: vid,
 			Title:           item.Snippet.Title,
+			ChannelTitle:    sub.ChannelTitle,
 			URL:             "https://www.youtube.com/watch?v=" + vid,
 			PublishedAt:     item.Snippet.PublishedAt,
 		})
@@ -238,7 +249,129 @@ func (a *Adapter) NewVideos(ctx context.Context, sub domain.Subscription) ([]dom
 			break
 		}
 	}
-	return videos, nil
+
+	// Drop Shorts/sub-minute clips and live/upcoming broadcasts before they ever
+	// reach the rate-limited caption path (ADR-023). One cheap videos.list call
+	// (quota API, not the timedtext throttle) supplies duration + live status.
+	return a.filterLowValue(ctx, client, videos), nil
+}
+
+// filterLowValue removes videos shorter than cfg.MinVideoSeconds and any live or
+// upcoming broadcast, using a single videos.list lookup for duration +
+// liveBroadcastContent. The filter is best-effort: if MinVideoSeconds is 0 (off)
+// or the lookup fails, the input is returned unfiltered — discovery must not break
+// because a metadata call hiccuped; the worst case is the pre-ADR-023 behaviour.
+func (a *Adapter) filterLowValue(ctx context.Context, client *http.Client, videos []domain.Video) []domain.Video {
+	if a.cfg.MinVideoSeconds <= 0 || len(videos) == 0 {
+		return videos
+	}
+
+	ids := make([]string, 0, len(videos))
+	for _, v := range videos {
+		ids = append(ids, v.ProviderVideoID)
+	}
+	q := url.Values{
+		"part": {"contentDetails,snippet"},
+		"id":   {strings.Join(ids, ",")},
+	}
+	var resp videoListResponse
+	if err := a.getJSON(ctx, client, "/videos", q, &resp); err != nil {
+		// Degrade open: keep the candidates rather than lose discovery.
+		return videos
+	}
+
+	type meta struct {
+		seconds int
+		live    string
+	}
+	byID := make(map[string]meta, len(resp.Items))
+	for _, it := range resp.Items {
+		byID[it.ID] = meta{seconds: parseISO8601Seconds(it.ContentDetails.Duration), live: it.Snippet.LiveBroadcastContent}
+	}
+
+	kept := videos[:0]
+	for _, v := range videos {
+		m, ok := byID[v.ProviderVideoID]
+		if !ok {
+			kept = append(kept, v) // unknown metadata: keep, let the fetch decide
+			continue
+		}
+		if m.live != "" && m.live != "none" {
+			continue // live or upcoming broadcast
+		}
+		if m.seconds > 0 && m.seconds < a.cfg.MinVideoSeconds {
+			continue // Short / sub-threshold clip
+		}
+		kept = append(kept, v)
+	}
+	return kept
+}
+
+// parseISO8601Seconds parses an ISO 8601 duration as returned by the YouTube Data
+// API (e.g. "PT1H2M3S", "PT45S", "PT3M") into seconds. Only the hour/minute/second
+// components YouTube emits are handled; an unparseable or zero value returns 0,
+// which the caller treats as "unknown" (not filtered on duration).
+func parseISO8601Seconds(d string) int {
+	if !strings.HasPrefix(d, "PT") {
+		return 0
+	}
+	d = d[2:]
+	total, num := 0, 0
+	seen := false
+	for _, r := range d {
+		switch {
+		case r >= '0' && r <= '9':
+			num = num*10 + int(r-'0')
+			seen = true
+		case r == 'H':
+			total += num * 3600
+			num, seen = 0, false
+		case r == 'M':
+			total += num * 60
+			num, seen = 0, false
+		case r == 'S':
+			total += num
+			num, seen = 0, false
+		default:
+			return 0 // unexpected component (days/weeks) — treat as unknown
+		}
+	}
+	if seen {
+		return 0 // trailing digits without a unit: malformed
+	}
+	return total
+}
+
+// VideoByID fetches a single video's metadata (videos.list, snippet) for an
+// arbitrary video id — including channels the user does not follow (paste-a-URL,
+// Feature 2). This is a Data API call (1 quota unit), NOT the rate-limited
+// caption path, so it is not gated: only the later transcript fetch goes through
+// globalFetchGate. UserID is set on the result and SubscriptionID is left empty
+// (a pasted video has no subscription parent). Returns ErrVideoNotFound when the
+// id resolves to no video.
+func (a *Adapter) VideoByID(ctx context.Context, userID, videoID string) (domain.Video, error) {
+	client, err := a.httpClient(ctx, a.cfg.TokenSecretRef)
+	if err != nil {
+		return domain.Video{}, err
+	}
+	q := url.Values{"part": {"snippet"}, "id": {videoID}}
+	var resp videoListResponse
+	if err := a.getJSON(ctx, client, "/videos", q, &resp); err != nil {
+		return domain.Video{}, fmt.Errorf("video by id %q: %w", videoID, err)
+	}
+	if len(resp.Items) == 0 {
+		return domain.Video{}, fmt.Errorf("video %q: %w", videoID, domain.ErrVideoNotFound)
+	}
+	it := resp.Items[0]
+	return domain.Video{
+		UserID:          userID,
+		Provider:        domain.ProviderYouTube,
+		ProviderVideoID: videoID,
+		Title:           it.Snippet.Title,
+		ChannelTitle:    it.Snippet.ChannelTitle,
+		URL:             "https://www.youtube.com/watch?v=" + videoID,
+		PublishedAt:     it.Snippet.PublishedAt,
+	}, nil
 }
 
 // uploadsPlaylistID derives a channel's uploads playlist id at zero API cost:
@@ -269,6 +402,12 @@ func (a *Adapter) resolveUploadsPlaylist(ctx context.Context, client *http.Clien
 	return resp.Items[0].ContentDetails.RelatedPlaylists.Uploads, nil
 }
 
+// isHTTP404 reports whether err came from a YouTube API call that returned HTTP 404.
+// getRaw encodes the status as "youtube api <path>: status 404: ...".
+func isHTTP404(err error) bool {
+	return err != nil && strings.Contains(err.Error(), "status 404")
+}
+
 // getJSON issues a GET and decodes a JSON body into out. A non-200 status is an
 // error carrying a bounded slice of the response body for diagnosis.
 func (a *Adapter) getJSON(ctx context.Context, client *http.Client, path string, q url.Values, out any) error {
@@ -333,6 +472,21 @@ type playlistItemListResponse struct {
 	} `json:"items"`
 }
 
+type videoListResponse struct {
+	Items []struct {
+		ID      string `json:"id"`
+		Snippet struct {
+			Title                string    `json:"title"`
+			ChannelTitle         string    `json:"channelTitle"`
+			PublishedAt          time.Time `json:"publishedAt"`
+			LiveBroadcastContent string    `json:"liveBroadcastContent"`
+		} `json:"snippet"`
+		ContentDetails struct {
+			Duration string `json:"duration"` // ISO 8601, e.g. "PT1M30S"
+		} `json:"contentDetails"`
+	} `json:"items"`
+}
+
 type channelListResponse struct {
 	Items []struct {
 		ContentDetails struct {

internal/adapters/youtube/youtube_test.go

@@ -131,7 +131,7 @@ func TestNewVideos(t *testing.T) {
 		}`))
 	})
 
-	sub := domain.Subscription{ID: "s1", UserID: "u1", ChannelID: "UC_acme"}
+	sub := domain.Subscription{ID: "s1", UserID: "u1", ChannelID: "UC_acme", ChannelTitle: "Acme Channel"}
 	vids, err := a.NewVideos(context.Background(), sub)
 	if err != nil {
 		t.Fatalf("NewVideos: %v", err)
@@ -143,6 +143,9 @@ func TestNewVideos(t *testing.T) {
 	if v.ProviderVideoID != "vid1" || v.Title != "Designing for Attention" {
 		t.Errorf("unexpected video: %+v", v)
 	}
+	if v.ChannelTitle != "Acme Channel" {
+		t.Errorf("ChannelTitle = %q, want Acme Channel", v.ChannelTitle)
+	}
 	if v.Provider != domain.ProviderYouTube || v.URL != "https://www.youtube.com/watch?v=vid1" {
 		t.Errorf("video not wired correctly: %+v", v)
 	}
@@ -183,6 +186,91 @@ func TestNewVideosCapsAtMax(t *testing.T) {
 	}
 }
 
+// TestNewVideosFiltersShortsAndLive: with MinVideoSeconds set, discovery enriches
+// candidates via videos.list and drops sub-threshold clips (Shorts) and
+// live/upcoming broadcasts before they reach the rate-limited caption path.
+func TestNewVideosFiltersShortsAndLive(t *testing.T) {
+	a, _ := newTestAdapter(t, func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/playlistItems":
+			_, _ = w.Write([]byte(`{
+				"items": [
+					{"snippet": {"title": "Real Talk", "publishedAt": "2026-06-03T10:00:00Z", "resourceId": {"videoId": "long1"}}},
+					{"snippet": {"title": "A Short", "publishedAt": "2026-06-03T09:00:00Z", "resourceId": {"videoId": "short1"}}},
+					{"snippet": {"title": "Live Now", "publishedAt": "2026-06-03T08:00:00Z", "resourceId": {"videoId": "live1"}}}
+				]
+			}`))
+		case "/videos":
+			if got := r.URL.Query().Get("part"); got != "contentDetails,snippet" {
+				t.Errorf("videos.list part=%q, want contentDetails,snippet", got)
+			}
+			_, _ = w.Write([]byte(`{
+				"items": [
+					{"id": "long1", "contentDetails": {"duration": "PT12M30S"}, "snippet": {"liveBroadcastContent": "none"}},
+					{"id": "short1", "contentDetails": {"duration": "PT45S"}, "snippet": {"liveBroadcastContent": "none"}},
+					{"id": "live1", "contentDetails": {"duration": "PT0S"}, "snippet": {"liveBroadcastContent": "live"}}
+				]
+			}`))
+		default:
+			t.Errorf("unexpected path %q", r.URL.Path)
+		}
+	})
+	a.cfg.MinVideoSeconds = 60
+
+	vids, err := a.NewVideos(context.Background(), domain.Subscription{ID: "s1", UserID: "u1", ChannelID: "UC_acme"})
+	if err != nil {
+		t.Fatalf("NewVideos: %v", err)
+	}
+	if len(vids) != 1 || vids[0].ProviderVideoID != "long1" {
+		t.Fatalf("expected only long1 to survive the filter, got %+v", vids)
+	}
+}
+
+// TestNewVideosNoFilterWhenDisabled: MinVideoSeconds=0 keeps the pre-ADR-023
+// behaviour — no videos.list call, no filtering.
+func TestNewVideosNoFilterWhenDisabled(t *testing.T) {
+	a, _ := newTestAdapter(t, func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/videos" {
+			t.Errorf("videos.list must not be called when MinVideoSeconds is 0")
+		}
+		_, _ = w.Write([]byte(`{"items": [
+			{"snippet": {"title": "A Short", "publishedAt": "2026-06-03T09:00:00Z", "resourceId": {"videoId": "short1"}}}
+		]}`))
+	})
+	a.cfg.MinVideoSeconds = 0
+
+	vids, err := a.NewVideos(context.Background(), domain.Subscription{ID: "s1", UserID: "u1", ChannelID: "UC_acme"})
+	if err != nil {
+		t.Fatalf("NewVideos: %v", err)
+	}
+	if len(vids) != 1 {
+		t.Fatalf("filter disabled must keep all videos, got %d", len(vids))
+	}
+}
+
+func TestParseISO8601Seconds(t *testing.T) {
+	cases := []struct {
+		in   string
+		want int
+	}{
+		{"PT45S", 45},
+		{"PT1M30S", 90},
+		{"PT3M", 180},
+		{"PT1H2M3S", 3723},
+		{"PT2H", 7200},
+		{"PT0S", 0},
+		{"", 0},
+		{"garbage", 0},
+		{"P1D", 0},  // days component not handled → unknown
+		{"PT10", 0}, // trailing digits without a unit → malformed
+	}
+	for _, c := range cases {
+		if got := parseISO8601Seconds(c.in); got != c.want {
+			t.Errorf("parseISO8601Seconds(%q) = %d, want %d", c.in, got, c.want)
+		}
+	}
+}
+
 // TestUploadsPlaylistID covers the zero-cost UC->UU derivation, including
 // non-standard ids that must fall through unchanged (handled via fallback).
 func TestUploadsPlaylistID(t *testing.T) {

internal/config/config.go

@@ -13,6 +13,7 @@ import (
 	"os"
 	"path/filepath"
 	"sort"
+	"strconv"
 	"strings"
 	"time"
 )
@@ -27,8 +28,38 @@ type Config struct {
 	GatewayURL string
 	// GatewayKey authorizes the gateway. Read from env, never committed.
 	GatewayKey string
-	// SummarizerModel is the alias in host/name form, e.g. "koala/phi4-mini".
+	// SummarizerModel is the primary summarizer alias in host/name form, tried
+	// first on every video, e.g. "koala/phi4-mini".
 	SummarizerModel string
+	// FallbackModel is the LOCAL fallback alias tried when the primary fails or
+	// returns unparseable output (ADR-022). Kept local so content stays on the
+	// homelab stack. Empty disables it. Default a bigger-context local model.
+	FallbackModel string
+	// CloudFallbackModel is the worst-case EXTERNAL fallback alias, tried only
+	// after every local endpoint has failed (ADR-022). For client deployments set
+	// this empty so content never leaves the local stack. Default a berget alias.
+	CloudFallbackModel string
+	// SummaryMaxTokens caps the completion budget per summary call. Small-context
+	// models (koala/phi4-mini, 8k) overflow when prompt + max_tokens exceeds the
+	// window; a summary needs only a few hundred tokens, so the default is small.
+	SummaryMaxTokens int
+	// MaxTranscriptChars bounds the transcript text sent to the model so a long
+	// transcript does not overflow a small-context primary. 0 disables truncation.
+	MaxTranscriptChars int
+
+	// MinVideoSeconds drops videos shorter than this from discovery (Shorts and
+	// other sub-minute clips that are noise and waste the scarce caption-fetch
+	// budget, ADR-014/ADR-023). Enforced via a cheap Data API videos.list lookup at
+	// discovery, never the rate-limited caption path. 0 disables the filter.
+	MinVideoSeconds int
+
+	// ChannelCaptionlessThreshold is how many consecutive no-caption results a
+	// channel may yield before its videos are suppressed from caption fetching
+	// (ADR-024). 0 disables the per-channel caption memory entirely.
+	ChannelCaptionlessThreshold int
+	// ChannelCaptionlessWindow is how long a suppressed channel stays suppressed
+	// before one video is re-probed (auto-recovery for a channel that adds captions).
+	ChannelCaptionlessWindow time.Duration
 	// SummarizerTimeout bounds a single completion call. Thinking models are
 	// slow, so the default is generous.
 	SummarizerTimeout time.Duration
@@ -65,9 +96,40 @@ type Config struct {
 	// expires the video is retried. Zero means "always retry" (no backoff).
 	FetchBackoff time.Duration
 
+	// FetchRate is the minimum interval between outbound caption fetches across the
+	// whole process — the shared per-egress-IP rate gate (ADR-014 item 2). It is
+	// the gate that makes auto-summarize-on-a-schedule safe: scheduler runners and
+	// the web click-path serialise through it. Zero = unlimited (dev/tests).
+	FetchRate time.Duration
+
+	// AutoSummarizeWindow bounds auto-summarization to recent videos: in automatic
+	// mode the scheduler only summarizes videos published within this window of now.
+	// Older videos are still discovered and listed, but wait for an explicit manual
+	// "Summarize" — so a large back-catalogue does not self-inflict 429s against the
+	// caption rate gate. Zero disables the bound (summarize every unseen video, the
+	// pre-recency behaviour). Default ~7 days.
+	AutoSummarizeWindow time.Duration
+
+	// OnboardSummarizeCount caps how many of a freshly-connected user's newest
+	// videos are summarized immediately on connect (the onboarding "it works"
+	// burst). HARD-capped at maxOnboardSummarizeCount so onboarding can never
+	// bulk-fetch; 0 disables the burst. Every fetch still flows through the shared
+	// caption rate gate (ADR-014) — the cap bounds count, never the pacing. Default 3.
+	OnboardSummarizeCount int
+
+	// DiscoveryInterval, when > 0, makes `serve` run in-process scheduled discovery
+	// for ALL users on that cadence (ADR-018). Zero/unset = disabled, so dev and
+	// tests never auto-fetch. Single-replica assumption — see cmdServe.
+	DiscoveryInterval time.Duration
+
 	// HTTPAddr is the listen address for `tapir serve` (the Stage-0 web UI).
 	HTTPAddr string
 
+	// PublicURL is the externally-reachable base URL of the deployed service,
+	// e.g. "https://tapir.d-ma.be". Used to build absolute links handed to humans
+	// (the `tapir invite` URL). No trailing slash is assumed — callers trim it.
+	PublicURL string
+
 	// Dex OIDC (web login, ADR-011/012). When OIDCIssuer is empty, `serve` falls
 	// back to the allow-all StubAuth (local dev). When set, serve uses Dex: any
 	// Dex-authenticated subject may sign in, then registers a tapir user (ADR-012).
@@ -84,14 +146,26 @@ func (c Config) DexConfigured() bool { return strings.TrimSpace(c.OIDCIssuer) !=
 
 // Defaults (see docs/homelab-integration.md). All overridable via env.
 const (
-	defaultGatewayURL           = "http://koala:30401/v1"
-	defaultSummarizerModel      = "koala/phi4-mini"
-	defaultSummarizerTimeout    = 5 * time.Minute
-	defaultYTTokenRef           = "youtube/refresh_token"
-	defaultYTConnectRedirectURL = "https://tapir.d-ma.be/oauth/youtube/callback"
-	defaultOAuthRedirectAddr    = "localhost:8080"
-	defaultHTTPAddr             = ":8080"
-	defaultFetchBackoff         = time.Hour
+	defaultGatewayURL            = "http://koala:30401/v1"
+	defaultSummarizerModel       = "koala/phi4-mini"
+	defaultFallbackModel         = "koala/phi4-14b"
+	defaultCloudFallbackModel    = "berget/mistral-small"
+	defaultSummaryMaxTokens      = 1500
+	defaultMaxTranscriptChars    = 18000
+	defaultMinVideoSeconds       = 60
+	defaultCaptionlessThreshold  = 5
+	defaultCaptionlessWindow     = 14 * 24 * time.Hour
+	defaultSummarizerTimeout     = 5 * time.Minute
+	defaultYTTokenRef            = "youtube/refresh_token"
+	defaultYTConnectRedirectURL  = "https://tapir.d-ma.be/oauth/youtube/callback"
+	defaultOAuthRedirectAddr     = "localhost:8080"
+	defaultHTTPAddr              = ":8080"
+	defaultFetchBackoff          = time.Hour
+	defaultFetchRate             = 2 * time.Second
+	defaultPublicURL             = "https://tapir.d-ma.be"
+	defaultAutoSummarizeWindow   = 7 * 24 * time.Hour
+	defaultOnboardSummarizeCount = 3
+	maxOnboardSummarizeCount     = 5
 )
 
 // Load reads the environment into a Config, applying defaults. It does not
@@ -104,6 +178,8 @@ func Load() (Config, error) {
 		GatewayURL:           envOr("TAPIR_GATEWAY_URL", defaultGatewayURL),
 		GatewayKey:           os.Getenv("TAPIR_GATEWAY_KEY"),
 		SummarizerModel:      envOr("TAPIR_SUMMARIZER_MODEL", defaultSummarizerModel),
+		FallbackModel:        lookupOr("TAPIR_FALLBACK_MODEL", defaultFallbackModel),
+		CloudFallbackModel:   lookupOr("TAPIR_CLOUD_FALLBACK_MODEL", defaultCloudFallbackModel),
 		DBDSN:                os.Getenv("TAPIR_DB_DSN"),
 		YTClientID:           os.Getenv("TAPIR_YT_CLIENT_ID"),
 		YTClientSecret:       os.Getenv("TAPIR_YT_CLIENT_SECRET"),
@@ -112,6 +188,7 @@ func Load() (Config, error) {
 		SecretsFile:          envOr("TAPIR_SECRETS_FILE", defaultSecretsFile()),
 		OAuthRedirectAddr:    envOr("TAPIR_OAUTH_REDIRECT_ADDR", defaultOAuthRedirectAddr),
 		HTTPAddr:             envOr("TAPIR_HTTP_ADDR", defaultHTTPAddr),
+		PublicURL:            envOr("TAPIR_PUBLIC_URL", defaultPublicURL),
 		OIDCIssuer:           os.Getenv("TAPIR_OIDC_ISSUER"),
 		DexClientID:          os.Getenv("TAPIR_DEX_CLIENT_ID"),
 		DexClientSecret:      os.Getenv("TAPIR_DEX_CLIENT_SECRET"),
@@ -137,6 +214,75 @@ func Load() (Config, error) {
 	}
 	c.FetchBackoff = backoff
 
+	fetchRate, err := durationOr("TAPIR_FETCH_RATE", defaultFetchRate)
+	if err != nil {
+		return Config{}, err
+	}
+	c.FetchRate = fetchRate
+
+	discovery, err := durationOr("TAPIR_DISCOVERY_INTERVAL", 0)
+	if err != nil {
+		return Config{}, err
+	}
+	c.DiscoveryInterval = discovery
+
+	autoWindow, err := durationOr("TAPIR_AUTO_SUMMARIZE_WINDOW", defaultAutoSummarizeWindow)
+	if err != nil {
+		return Config{}, err
+	}
+	c.AutoSummarizeWindow = autoWindow
+
+	summaryTokens, err := intOr("TAPIR_SUMMARY_MAX_TOKENS", defaultSummaryMaxTokens)
+	if err != nil {
+		return Config{}, err
+	}
+	c.SummaryMaxTokens = summaryTokens
+
+	maxChars, err := intOr("TAPIR_MAX_TRANSCRIPT_CHARS", defaultMaxTranscriptChars)
+	if err != nil {
+		return Config{}, err
+	}
+	if maxChars < 0 {
+		maxChars = 0
+	}
+	c.MaxTranscriptChars = maxChars
+
+	minVideo, err := intOr("TAPIR_MIN_VIDEO_SECONDS", defaultMinVideoSeconds)
+	if err != nil {
+		return Config{}, err
+	}
+	if minVideo < 0 {
+		minVideo = 0
+	}
+	c.MinVideoSeconds = minVideo
+
+	captionThreshold, err := intOr("TAPIR_CHANNEL_CAPTIONLESS_THRESHOLD", defaultCaptionlessThreshold)
+	if err != nil {
+		return Config{}, err
+	}
+	if captionThreshold < 0 {
+		captionThreshold = 0
+	}
+	c.ChannelCaptionlessThreshold = captionThreshold
+
+	captionWindow, err := durationOr("TAPIR_CHANNEL_CAPTIONLESS_WINDOW", defaultCaptionlessWindow)
+	if err != nil {
+		return Config{}, err
+	}
+	c.ChannelCaptionlessWindow = captionWindow
+
+	onboard, err := intOr("TAPIR_ONBOARD_SUMMARIZE_COUNT", defaultOnboardSummarizeCount)
+	if err != nil {
+		return Config{}, err
+	}
+	if onboard < 0 {
+		onboard = 0
+	}
+	if onboard > maxOnboardSummarizeCount {
+		onboard = maxOnboardSummarizeCount
+	}
+	c.OnboardSummarizeCount = onboard
+
 	return c, nil
 }
 
@@ -201,6 +347,29 @@ func envOr(key, fallback string) string {
 	return fallback
 }
 
+// lookupOr returns the env value when the key is PRESENT (even if empty), else
+// fallback. Unlike envOr it lets an explicit empty value override the default —
+// needed to DISABLE an optional fallback model (e.g. set the cloud fallback empty
+// for a client deployment so content never leaves the local stack).
+func lookupOr(key, fallback string) string {
+	if v, ok := os.LookupEnv(key); ok {
+		return v
+	}
+	return fallback
+}
+
+func intOr(key string, fallback int) (int, error) {
+	v := os.Getenv(key)
+	if v == "" {
+		return fallback, nil
+	}
+	n, err := strconv.Atoi(v)
+	if err != nil {
+		return 0, fmt.Errorf("config: %s=%q: %w", key, v, err)
+	}
+	return n, nil
+}
+
 func durationOr(key string, fallback time.Duration) (time.Duration, error) {
 	v := os.Getenv(key)
 	if v == "" {

internal/config/config_test.go

@@ -1,11 +1,29 @@
 package config
 
 import (
+	"os"
 	"strings"
 	"testing"
 	"time"
 )
 
+// unset removes an env key for the duration of the test, restoring it after.
+// Needed to observe a default for a key read with LookupEnv (where present-empty
+// means "explicitly disabled", not "use default").
+func unset(t *testing.T, key string) {
+	t.Helper()
+	if old, ok := os.LookupEnv(key); ok {
+		t.Cleanup(func() {
+			if err := os.Setenv(key, old); err != nil {
+				t.Fatalf("restore %s: %v", key, err)
+			}
+		})
+	}
+	if err := os.Unsetenv(key); err != nil {
+		t.Fatalf("unset %s: %v", key, err)
+	}
+}
+
 // setEnv sets env vars for the test and clears them afterward, so cases don't
 // leak into one another. t.Setenv handles restoration.
 func setEnv(t *testing.T, kv map[string]string) {
@@ -48,18 +66,94 @@ func TestLoad_AppliesDefaults(t *testing.T) {
 	if c.FetchBackoff != defaultFetchBackoff {
 		t.Errorf("FetchBackoff = %v, want default %v", c.FetchBackoff, defaultFetchBackoff)
 	}
+	if c.AutoSummarizeWindow != defaultAutoSummarizeWindow {
+		t.Errorf("AutoSummarizeWindow = %v, want default %v", c.AutoSummarizeWindow, defaultAutoSummarizeWindow)
+	}
+}
+
+func TestLoad_SummarizerChainDefaults(t *testing.T) {
+	setEnv(t, map[string]string{
+		"TAPIR_SUMMARIZER_MODEL":     "",
+		"TAPIR_SUMMARY_MAX_TOKENS":   "",
+		"TAPIR_MAX_TRANSCRIPT_CHARS": "",
+	})
+	unset(t, "TAPIR_FALLBACK_MODEL")
+	unset(t, "TAPIR_CLOUD_FALLBACK_MODEL")
+
+	c, err := Load()
+	if err != nil {
+		t.Fatalf("Load: %v", err)
+	}
+	if c.FallbackModel != defaultFallbackModel {
+		t.Errorf("FallbackModel = %q, want %q", c.FallbackModel, defaultFallbackModel)
+	}
+	if c.CloudFallbackModel != defaultCloudFallbackModel {
+		t.Errorf("CloudFallbackModel = %q, want %q", c.CloudFallbackModel, defaultCloudFallbackModel)
+	}
+	if c.SummaryMaxTokens != defaultSummaryMaxTokens {
+		t.Errorf("SummaryMaxTokens = %d, want %d", c.SummaryMaxTokens, defaultSummaryMaxTokens)
+	}
+	if c.MaxTranscriptChars != defaultMaxTranscriptChars {
+		t.Errorf("MaxTranscriptChars = %d, want %d", c.MaxTranscriptChars, defaultMaxTranscriptChars)
+	}
+}
+
+// An explicitly empty cloud-fallback env disables external routing — the lever a
+// client deployment pulls so content never leaves the local stack.
+func TestLoad_EmptyCloudFallbackDisables(t *testing.T) {
+	t.Setenv("TAPIR_CLOUD_FALLBACK_MODEL", "")
+	c, err := Load()
+	if err != nil {
+		t.Fatalf("Load: %v", err)
+	}
+	if c.CloudFallbackModel != "" {
+		t.Errorf("CloudFallbackModel = %q, want empty (disabled)", c.CloudFallbackModel)
+	}
+}
+
+func TestLoad_OnboardSummarizeCount(t *testing.T) {
+	cases := []struct {
+		name, env string
+		want      int
+	}{
+		{"default", "", defaultOnboardSummarizeCount},
+		{"explicit", "4", 4},
+		{"zero disables", "0", 0},
+		{"clamped to hard cap", "50", maxOnboardSummarizeCount},
+		{"negative clamps to zero", "-3", 0},
+	}
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			setEnv(t, map[string]string{"TAPIR_ONBOARD_SUMMARIZE_COUNT": c.env})
+			cfg, err := Load()
+			if err != nil {
+				t.Fatalf("Load: %v", err)
+			}
+			if cfg.OnboardSummarizeCount != c.want {
+				t.Fatalf("OnboardSummarizeCount = %d, want %d", cfg.OnboardSummarizeCount, c.want)
+			}
+		})
+	}
+}
+
+func TestLoad_OnboardSummarizeCountInvalid(t *testing.T) {
+	setEnv(t, map[string]string{"TAPIR_ONBOARD_SUMMARIZE_COUNT": "three"})
+	if _, err := Load(); err == nil {
+		t.Fatal("Load: want error for non-numeric TAPIR_ONBOARD_SUMMARIZE_COUNT")
+	}
 }
 
 func TestLoad_ParsesValues(t *testing.T) {
 	setEnv(t, map[string]string{
-		"TAPIR_USER_ID":            "11111111-1111-1111-1111-111111111111",
-		"TAPIR_GATEWAY_URL":        "http://example/v1",
-		"TAPIR_GATEWAY_KEY":        "sk-test",
-		"TAPIR_SUMMARIZER_MODEL":   "iguana/deepseek-r1-14b",
-		"TAPIR_SUMMARIZER_TIMEOUT": "90s",
-		"TAPIR_DB_DSN":             "postgres://x",
-		"TAPIR_POLL_INTERVAL":      "10m",
-		"TAPIR_FETCH_BACKOFF":      "30m",
+		"TAPIR_USER_ID":               "11111111-1111-1111-1111-111111111111",
+		"TAPIR_GATEWAY_URL":           "http://example/v1",
+		"TAPIR_GATEWAY_KEY":           "sk-test",
+		"TAPIR_SUMMARIZER_MODEL":      "iguana/deepseek-r1-14b",
+		"TAPIR_SUMMARIZER_TIMEOUT":    "90s",
+		"TAPIR_DB_DSN":                "postgres://x",
+		"TAPIR_POLL_INTERVAL":         "10m",
+		"TAPIR_FETCH_BACKOFF":         "30m",
+		"TAPIR_AUTO_SUMMARIZE_WINDOW": "48h",
 	})
 
 	c, err := Load()
@@ -84,6 +178,9 @@ func TestLoad_ParsesValues(t *testing.T) {
 	if c.FetchBackoff != 30*time.Minute {
 		t.Errorf("FetchBackoff = %v, want 30m", c.FetchBackoff)
 	}
+	if c.AutoSummarizeWindow != 48*time.Hour {
+		t.Errorf("AutoSummarizeWindow = %v, want 48h", c.AutoSummarizeWindow)
+	}
 }
 
 func TestLoad_RejectsBadDuration(t *testing.T) {

internal/domain/domain.go

@@ -2,7 +2,28 @@
 // the standard library — no providers, no storage, no AI. See docs/data-model.md.
 package domain
 
-import "time"
+import (
+	"errors"
+	"fmt"
+	"time"
+)
+
+// ErrVideoNotFound is returned when a video id resolves to no video (deleted,
+// private, or a typo'd paste). Defined in domain so adapters and the web layer
+// share one sentinel without coupling to each other.
+var ErrVideoNotFound = errors.New("video not found")
+
+// ErrChannelUnavailable is returned by a VideoSource when a channel's upload
+// playlist returns HTTP 404 — the channel was deleted or made private. The runner
+// stores these so the account page can surface them to the user.
+type ErrChannelUnavailable struct {
+	ChannelID    string
+	ChannelTitle string
+}
+
+func (e *ErrChannelUnavailable) Error() string {
+	return fmt.Sprintf("channel %q (%s) unavailable: playlist not found", e.ChannelTitle, e.ChannelID)
+}
 
 // Provider identifies a video platform.
 type Provider string
@@ -52,6 +73,7 @@ type Video struct {
 	Provider        Provider
 	ProviderVideoID string
 	Title           string
+	ChannelTitle    string
 	URL             string
 	PublishedAt     time.Time
 	SeenAt          time.Time

internal/ports/ports.go

@@ -27,6 +27,26 @@ type Summarizer interface {
 	Summarize(ctx context.Context, v domain.Video, t domain.Transcript) (domain.Summary, error)
 }
 
+// TranscriptStore persists transcripts as shared, video-keyed public content
+// (ADR-021). It is keyed by the cross-user dedup key (provider, providerVideoID)
+// — the video's public identity, NOT Tapir's per-user videos.id — and holds only
+// public caption content, so it is deliberately NOT user-scoped: two users who
+// share a video share the one row. The engine reads it before any caption fetch
+// so re-analysis never re-touches YouTube (ADR-010/014).
+type TranscriptStore interface {
+	// GetTranscript returns the stored transcript for a video and whether one
+	// exists. A stored Source == SourceNone (captions permanently absent) is a
+	// real hit: ok is true and HasText() is false, so callers skip without
+	// re-fetching. A transient rate-limit is never stored, so it never appears
+	// here as a false absence.
+	GetTranscript(ctx context.Context, provider, providerVideoID string) (t domain.Transcript, ok bool, err error)
+	// SaveTranscript upserts the transcript for (provider, providerVideoID). Only
+	// terminal outcomes are persisted: SourceCaptions (with text) or SourceNone.
+	// SourceRateLimited must NOT be passed — it is a per-user retry (ADR-014), not
+	// a shared terminal state.
+	SaveTranscript(ctx context.Context, provider, providerVideoID string, t domain.Transcript) error
+}
+
 // Sink delivers a summary to a destination (user store, brain, ...).
 // Implementations fail independently of one another.
 type Sink interface {

internal/runner/runner.go

@@ -10,11 +10,13 @@
 package runner
 
 import (
+	"cmp"
 	"context"
 	"errors"
 	"fmt"
 	"log/slog"
 	"os"
+	"slices"
 	"time"
 
 	"gitea.d-ma.be/mathias/tapir/internal/domain"
@@ -22,6 +24,37 @@ import (
 	"gitea.d-ma.be/mathias/tapir/internal/usecase"
 )
 
+// passCandidate is a video that passed all pre-filters (seen/manual/backoff)
+// and is queued for transcript fetch + summarization in this pass.
+type passCandidate struct {
+	v         domain.Video
+	channelID string // owning channel — keys the caption-availability memory (ADR-024)
+	pos       int    // discovery position — used as a stable tiebreak when published_at ties
+}
+
+// compareNewestFirst orders candidates by published_at descending, NULLS LAST,
+// with pos ascending as a stable tiebreak. Videos with a zero published_at
+// (schema 001: nullable) sort after all dated videos regardless of pos.
+func compareNewestFirst(a, b passCandidate) int {
+	aNull := a.v.PublishedAt.IsZero()
+	bNull := b.v.PublishedAt.IsZero()
+	switch {
+	case aNull && bNull:
+		return cmp.Compare(a.pos, b.pos)
+	case aNull:
+		return 1 // a is null → after b
+	case bNull:
+		return -1 // b is null → after a
+	}
+	if !a.v.PublishedAt.Equal(b.v.PublishedAt) {
+		if a.v.PublishedAt.After(b.v.PublishedAt) {
+			return -1 // newer first
+		}
+		return 1
+	}
+	return cmp.Compare(a.pos, b.pos) // same timestamp: preserve discovery order
+}
+
 // VideoStore is the durable persistence the run loop needs: assign a stable id +
 // metadata, read the already-summarized set, and (for manual summarization mode)
 // read the user's mode + queued videos and clear a video's queue flag once it has
@@ -38,6 +71,18 @@ type VideoStore interface {
 	// SetTranscriptStatus records the outcome of a transcript attempt: "none",
 	// "rate_limited" (stamps the backoff clock), or "fetched".
 	SetTranscriptStatus(ctx context.Context, userID, videoID, status string) error
+	// UpsertChannelError records a channel that returned HTTP 404 (deleted/private).
+	// Called when NewVideos returns domain.ErrChannelUnavailable; best-effort, errors
+	// are logged and never abort the pass.
+	UpsertChannelError(ctx context.Context, userID, channelID, channelTitle string) error
+	// CaptionlessChannels returns channel ids currently suppressed because their
+	// recent videos all yielded no captions (ADR-024). The loop skips caption
+	// fetches for these channels' (non-requested) videos.
+	CaptionlessChannels(ctx context.Context, userID string) (map[string]bool, error)
+	// RecordChannelCaptionOutcome updates a channel's caption memory after a fetch:
+	// hadCaptions resets it, otherwise the no-caption streak grows and the channel
+	// is suppressed for window once it reaches threshold. A no-op when threshold<=0.
+	RecordChannelCaptionOutcome(ctx context.Context, userID, channelID string, hadCaptions bool, threshold int, window time.Duration) error
 }
 
 // Processor runs the core use case for a single video. *usecase.Engine
@@ -49,13 +94,17 @@ type Processor interface {
 // Runner walks a user's subscriptions, persists each candidate video, skips the
 // ones already summarized (durably), and processes the rest through the engine.
 type Runner struct {
-	src     ports.VideoSource
-	store   VideoStore
-	engine  Processor
-	userID  string
-	log     *slog.Logger
-	backoff time.Duration    // rate-limit retry window; 0 = always retry
-	now     func() time.Time // injectable clock (tests); defaults to time.Now
+	src        ports.VideoSource
+	store      VideoStore
+	engine     Processor
+	userID     string
+	log        *slog.Logger
+	backoff    time.Duration    // rate-limit retry window; 0 = always retry
+	autoWindow time.Duration    // recency bound for auto-summarize; 0 = no bound
+	now        func() time.Time // injectable clock (tests); defaults to time.Now
+
+	captionThreshold int           // consecutive no-caption results before a channel is suppressed; 0 = feature off
+	captionWindow    time.Duration // how long a caption-less channel stays suppressed before re-probe
 }
 
 // Option configures a Runner at construction. Variadic so existing call sites
@@ -70,6 +119,21 @@ func WithBackoff(d time.Duration) Option { return func(r *Runner) { r.backoff =
 // fixed time; production leaves the time.Now default.
 func WithClock(now func() time.Time) Option { return func(r *Runner) { r.now = now } }
 
+// WithAutoWindow bounds auto-summarization to videos published within d of now.
+// In auto mode a video older than d is discovered and listed but not summarized
+// automatically — it waits for an explicit manual request — so a large
+// back-catalogue does not self-inflict 429s. An explicitly requested video
+// bypasses the bound. 0 (the default) disables it (summarize every unseen video).
+func WithAutoWindow(d time.Duration) Option { return func(r *Runner) { r.autoWindow = d } }
+
+// WithCaptionMemory enables per-channel caption-availability suppression
+// (ADR-024): after threshold consecutive no-caption results a channel's videos
+// are skipped (no caption fetch) for window, then one is re-probed. threshold<=0
+// (the default) disables the feature entirely.
+func WithCaptionMemory(threshold int, window time.Duration) Option {
+	return func(r *Runner) { r.captionThreshold = threshold; r.captionWindow = window }
+}
+
 // New builds a Runner. A nil logger falls back to slog.Default.
 func New(src ports.VideoSource, store VideoStore, engine Processor, userID string, log *slog.Logger, opts ...Option) *Runner {
 	if log == nil {
@@ -87,28 +151,54 @@ func New(src ports.VideoSource, store VideoStore, engine Processor, userID strin
 
 // Stats summarizes one RunOnce pass.
 type Stats struct {
-	Candidates         int
-	Summarized         int
-	SkippedSeen        int
-	SkippedNoText      int
-	SkippedManual      int // discovered but not queued, in manual mode
-	SkippedRateLimited int // 429'd previously and still inside the backoff window
-	Errors             int
+	Candidates              int
+	Summarized              int
+	SkippedSeen             int
+	SkippedNoText           int
+	SkippedManual           int // discovered but not queued, in manual mode
+	SkippedTooOld           int // auto mode: published outside the recency window (not requested)
+	SkippedRateLimited      int // 429'd previously and still inside the backoff window
+	SkippedNoCaptionChannel int // channel suppressed as caption-less (ADR-024)
+	Errors                  int
+	ChannelUnavailable      int // channels that returned HTTP 404 (deleted/private)
 }
 
-// RunOnce performs a single pass over the user's subscriptions. Per-item errors
-// are logged and collected (one bad video or channel does not abort the pass)
-// and returned joined alongside the Stats gathered.
+// tooOld reports whether a video published at publishedAt falls outside the
+// auto-summarize recency window. A zero window disables the bound, and a zero
+// publishedAt (undated video) is never aged out — it cannot be dated, so it is
+// processed rather than silently stranded.
+func (r *Runner) tooOld(publishedAt time.Time) bool {
+	if r.autoWindow <= 0 || publishedAt.IsZero() {
+		return false
+	}
+	return r.now().Sub(publishedAt) > r.autoWindow
+}
+
+// RunOnce performs a single pass over the user's subscriptions in three phases:
+//
+//  1. Discovery: walk all channels, persist each candidate video (UpsertVideo),
+//     apply pre-filters (seen/manual/backoff) — same as before.
+//  2. Sort: order the surviving candidates newest-first (published_at DESC, NULLS
+//     LAST) so new users get summaries of their most recent, relevant videos first;
+//     the back-catalogue fills in behind across subsequent passes.
+//  3. Process: feed candidates to the engine in sorted order through the shared
+//     globalFetchGate — the gate is unchanged and still governs honest rate pacing.
+//
+// All existing behaviour is preserved: per-item failure isolation, the rate-limit
+// backoff skip, manual mode, channel-unavailable handling, and stats accounting.
+// Only the processing order changes within a pass.
 func (r *Runner) RunOnce(ctx context.Context) (Stats, error) {
 	var (
-		stats Stats
-		errs  []error
+		stats      Stats
+		errs       []error
+		candidates []passCandidate
+		pos        int
 	)
 
 	// Throttle transcript fetches: unauthenticated caption scraping gets
 	// soft-throttled by YouTube under heavy back-to-back volume (captionTracks
 	// silently stripped from the player response). A small per-video delay keeps
-	// a full pass under the radar. TAPIR_FETCH_DELAY (Go duration), 0 = off.
+	// the fetch rate polite. TAPIR_FETCH_DELAY (Go duration), 0 = off.
 	fetchDelay, _ := time.ParseDuration(os.Getenv("TAPIR_FETCH_DELAY"))
 
 	seen, err := r.store.SeenVideoIDs(ctx, r.userID)
@@ -116,26 +206,26 @@ func (r *Runner) RunOnce(ctx context.Context) (Stats, error) {
 		return stats, fmt.Errorf("runner: load seen videos: %w", err)
 	}
 
-	// Summarization mode (per-user, ADR-012). Auto = summarize every unseen video
-	// (the original behavior). Manual = still discover/persist videos so the user
-	// sees them, but only summarize the ones explicitly queued via the web UI
-	// (summarize_requested). The queued set is loaded once per pass, like seen.
+	// Summarization mode (per-user, ADR-012). Auto = summarize every unseen video.
+	// Manual = discover/persist videos (visible in list) but only summarize ones
+	// explicitly queued via the web UI (summarize_requested).
 	auto, err := r.store.GetAutoSummarize(ctx, r.userID)
 	if err != nil {
 		return stats, fmt.Errorf("runner: load summarize mode: %w", err)
 	}
+	// requested is needed in manual mode (the queue) and in auto mode when a
+	// recency window is active (an explicit request bypasses the bound).
 	var requested map[string]bool
-	if !auto {
+	if !auto || r.autoWindow > 0 {
 		requested, err = r.store.RequestedVideoIDs(ctx, r.userID)
 		if err != nil {
 			return stats, fmt.Errorf("runner: load requested videos: %w", err)
 		}
 	}
 
-	// Rate-limit backoff: videos that 429'd on a prior pass, mapped to when. Inside
-	// the backoff window they are skipped before any caption fetch, so a throttled
-	// IP is not hammered. Loaded once per pass (like seen/requested). Disabled when
-	// backoff <= 0 ("always retry").
+	// Rate-limit backoff: videos that 429'd on a prior pass, mapped to when.
+	// Within the backoff window they are skipped before any caption fetch.
+	// Disabled when backoff <= 0 ("always retry").
 	var rateLimited map[string]time.Time
 	if r.backoff > 0 {
 		rateLimited, err = r.store.RateLimitedVideoIDs(ctx, r.userID)
@@ -144,21 +234,45 @@ func (r *Runner) RunOnce(ctx context.Context) (Stats, error) {
 		}
 	}
 
+	// Per-channel caption memory (ADR-024): channels whose recent videos all
+	// yielded no captions are suppressed so their new videos don't burn the scarce
+	// fetch budget. Loaded only when the feature is enabled (threshold > 0).
+	var captionless map[string]bool
+	if r.captionThreshold > 0 {
+		captionless, err = r.store.CaptionlessChannels(ctx, r.userID)
+		if err != nil {
+			return stats, fmt.Errorf("runner: load caption-less channels: %w", err)
+		}
+	}
+
 	subs, err := r.src.ListSubscriptions(ctx, r.userID)
 	if err != nil {
 		return stats, fmt.Errorf("runner: list subscriptions: %w", err)
 	}
 
+	// ── Phase 1: discover, persist, filter ───────────────────────────────────
+	// Walk all channels. Persist every video (UpsertVideo) so it appears in the
+	// list regardless of whether it will be summarized this pass. Apply pre-filters
+	// and collect surviving candidates with their discovery position.
 	for _, sub := range subs {
 		vids, err := r.src.NewVideos(ctx, sub)
 		if err != nil {
-			errs = append(errs, fmt.Errorf("new videos for %q: %w", sub.ChannelTitle, err))
-			stats.Errors++
+			var unavail *domain.ErrChannelUnavailable
+			if errors.As(err, &unavail) {
+				stats.ChannelUnavailable++
+				r.log.Warn("channel unavailable (playlist 404)", "channel", sub.ChannelTitle, "channel_id", sub.ChannelID)
+				if storeErr := r.store.UpsertChannelError(ctx, r.userID, unavail.ChannelID, unavail.ChannelTitle); storeErr != nil {
+					r.log.Warn("failed to store channel error", "err", storeErr)
+				}
+			} else {
+				errs = append(errs, fmt.Errorf("new videos for %q: %w", sub.ChannelTitle, err))
+				stats.Errors++
+			}
 			continue
 		}
 		for _, v := range vids {
 			stats.Candidates++
-			v.UserID = r.userID // keep the dedup/FK key consistent with config
+			v.UserID = r.userID
 
 			id, err := r.store.UpsertVideo(ctx, v)
 			if err != nil {
@@ -172,69 +286,107 @@ func (r *Runner) RunOnce(ctx context.Context) (Stats, error) {
 				stats.SkippedSeen++
 				continue
 			}
-			seen[id] = true // also guard against the same video within this pass
+			seen[id] = true // guard against duplicates within this pass
 
 			// Manual mode: skip summarization for videos the user has not queued.
-			// Discovery already happened (UpsertVideo above), so the new video is
+			// Discovery already happened (UpsertVideo above), so the video is
 			// visible in the list; it just isn't summarized until requested.
 			if !auto && !requested[id] {
 				stats.SkippedManual++
 				continue
 			}
 
-			// Still inside the rate-limit backoff window: skip without fetching, so
-			// we don't re-hit a caption endpoint that just 429'd us. After the window
-			// expires the video falls through and is retried normally.
+			// Recency bound (auto mode): summarize only recent videos automatically;
+			// older ones are discovered + listed (UpsertVideo above) but wait for an
+			// explicit manual request, so a large back-catalogue does not self-inflict
+			// 429s against the caption rate gate. A requested video bypasses the bound.
+			if auto && !requested[id] && r.tooOld(v.PublishedAt) {
+				stats.SkippedTooOld++
+				continue
+			}
+
+			// Caption-less channel (ADR-024): its recent videos all returned no
+			// captions, so skip the fetch entirely. The video is still listed
+			// (UpsertVideo above); an explicit manual request bypasses the skip.
+			if !requested[id] && captionless[sub.ChannelID] {
+				stats.SkippedNoCaptionChannel++
+				continue
+			}
+
+			// Still inside the rate-limit backoff window: skip without fetching.
 			if at, ok := rateLimited[id]; ok && r.now().Sub(at) < r.backoff {
 				stats.SkippedRateLimited++
 				r.log.Info("skipped video (rate-limited, backing off)", "video", v.ProviderVideoID, "title", v.Title)
 				continue
 			}
 
-			if fetchDelay > 0 {
-				time.Sleep(fetchDelay)
-			}
-			res, err := r.engine.ProcessNewVideo(ctx, v)
-			if err != nil {
-				errs = append(errs, fmt.Errorf("process %q: %w", v.ProviderVideoID, err))
+			candidates = append(candidates, passCandidate{v: v, channelID: sub.ChannelID, pos: pos})
+			pos++
+		}
+	}
+
+	// ── Phase 2: sort newest-first, NULLS LAST ────────────────────────────────
+	// Within this pass, process the newest videos first so a new user gets
+	// summaries of their most recent content quickly; the back-catalogue fills in
+	// behind across subsequent passes. Both this background batch and the foreground
+	// "Try now" button honour the shared globalFetchGate — ordering is onboarding
+	// prioritisation, not rate-limit evasion.
+	slices.SortStableFunc(candidates, compareNewestFirst)
+
+	// ── Phase 3: process in sorted order ─────────────────────────────────────
+	for _, c := range candidates {
+		if fetchDelay > 0 {
+			time.Sleep(fetchDelay)
+		}
+		res, err := r.engine.ProcessNewVideo(ctx, c.v)
+		if err != nil {
+			errs = append(errs, fmt.Errorf("process %q: %w", c.v.ProviderVideoID, err))
+			stats.Errors++
+			continue
+		}
+		id := c.v.ID
+		switch {
+		case res.Skipped && res.TranscriptSource == string(domain.SourceRateLimited):
+			// Fresh 429: stamp the backoff clock so the next pass skips it.
+			stats.SkippedRateLimited++
+			if err := r.store.SetTranscriptStatus(ctx, r.userID, id, "rate_limited"); err != nil {
+				errs = append(errs, fmt.Errorf("set rate_limited status %q: %w", c.v.ProviderVideoID, err))
 				stats.Errors++
-				continue
 			}
-			switch {
-			case res.Skipped && res.TranscriptSource == string(domain.SourceRateLimited):
-				// Fresh 429 this pass: persist rate_limited (stamps the backoff clock)
-				// so the next pass skips it until the window expires.
-				stats.SkippedRateLimited++
-				if err := r.store.SetTranscriptStatus(ctx, r.userID, id, "rate_limited"); err != nil {
-					errs = append(errs, fmt.Errorf("set rate_limited status %q: %w", v.ProviderVideoID, err))
-					stats.Errors++
-				}
-				r.log.Info("skipped video (rate-limited)", "video", v.ProviderVideoID, "title", v.Title)
-			case res.Skipped:
-				stats.SkippedNoText++
-				if err := r.store.SetTranscriptStatus(ctx, r.userID, id, "none"); err != nil {
-					errs = append(errs, fmt.Errorf("set none status %q: %w", v.ProviderVideoID, err))
-					stats.Errors++
-				}
-				r.log.Info("skipped video (no transcript)", "video", v.ProviderVideoID, "title", v.Title)
-			case res.Summary != nil:
-				stats.Summarized++
-				if err := r.store.SetTranscriptStatus(ctx, r.userID, id, "fetched"); err != nil {
-					errs = append(errs, fmt.Errorf("set fetched status %q: %w", v.ProviderVideoID, err))
-					stats.Errors++
-				}
-				// In manual mode the video was processed because it was queued;
-				// clear the flag so it is not re-summarized and the UI drops the
-				// "Queued" chip. (Auto mode never sets the flag.)
-				if !auto {
-					if err := r.store.ClearSummarizeRequested(ctx, r.userID, id); err != nil {
-						errs = append(errs, fmt.Errorf("clear summarize flag %q: %w", v.ProviderVideoID, err))
-						stats.Errors++
-					}
-				}
-				r.log.Info("summarized video", "video", v.ProviderVideoID, "title", v.Title,
-					"provider", res.Summary.AIProvider, "model", res.Summary.AIModel)
+			r.log.Info("skipped video (rate-limited)", "video", c.v.ProviderVideoID, "title", c.v.Title)
+		case res.Skipped:
+			stats.SkippedNoText++
+			if err := r.store.SetTranscriptStatus(ctx, r.userID, id, "none"); err != nil {
+				errs = append(errs, fmt.Errorf("set none status %q: %w", c.v.ProviderVideoID, err))
+				stats.Errors++
 			}
+			// No captions: grow this channel's no-caption streak (ADR-024).
+			if err := r.store.RecordChannelCaptionOutcome(ctx, r.userID, c.channelID, false, r.captionThreshold, r.captionWindow); err != nil {
+				errs = append(errs, fmt.Errorf("record no-caption %q: %w", c.v.ProviderVideoID, err))
+				stats.Errors++
+			}
+			r.log.Info("skipped video (no transcript)", "video", c.v.ProviderVideoID, "title", c.v.Title)
+		case res.Summary != nil:
+			stats.Summarized++
+			if err := r.store.SetTranscriptStatus(ctx, r.userID, id, "fetched"); err != nil {
+				errs = append(errs, fmt.Errorf("set fetched status %q: %w", c.v.ProviderVideoID, err))
+				stats.Errors++
+			}
+			// Captions present: reset this channel's caption memory (ADR-024).
+			if err := r.store.RecordChannelCaptionOutcome(ctx, r.userID, c.channelID, true, r.captionThreshold, r.captionWindow); err != nil {
+				errs = append(errs, fmt.Errorf("record has-caption %q: %w", c.v.ProviderVideoID, err))
+				stats.Errors++
+			}
+			// In manual mode the video was explicitly queued; clear the flag so
+			// it is not re-summarized and the UI drops the "Queued" chip.
+			if !auto {
+				if err := r.store.ClearSummarizeRequested(ctx, r.userID, id); err != nil {
+					errs = append(errs, fmt.Errorf("clear summarize flag %q: %w", c.v.ProviderVideoID, err))
+					stats.Errors++
+				}
+			}
+			r.log.Info("summarized video", "video", c.v.ProviderVideoID, "title", c.v.Title,
+				"provider", res.Summary.AIProvider, "model", res.Summary.AIModel)
 		}
 	}
 
@@ -250,8 +402,10 @@ func (r *Runner) Loop(ctx context.Context, interval time.Duration) error {
 		r.log.Info("run pass complete",
 			"candidates", stats.Candidates, "summarized", stats.Summarized,
 			"skipped_seen", stats.SkippedSeen, "skipped_no_text", stats.SkippedNoText,
-			"skipped_manual", stats.SkippedManual, "skipped_rate_limited", stats.SkippedRateLimited,
-			"errors", stats.Errors)
+			"skipped_manual", stats.SkippedManual, "skipped_too_old", stats.SkippedTooOld,
+			"skipped_rate_limited", stats.SkippedRateLimited,
+			"skipped_no_caption_channel", stats.SkippedNoCaptionChannel,
+			"channel_unavailable", stats.ChannelUnavailable, "errors", stats.Errors)
 		if err != nil {
 			r.log.Warn("run pass had errors", "err", err)
 		}

internal/runner/runner_test.go

@@ -51,6 +51,13 @@ type fakeStore struct {
 	cleared     []string
 	rateLimited map[string]time.Time // id -> when 429'd (seeds the backoff window)
 	statuses    map[string]string    // id -> last SetTranscriptStatus value
+	captionless map[string]bool      // channel ids currently suppressed (ADR-024)
+	captionRecs []captionRec         // RecordChannelCaptionOutcome calls, in order
+}
+
+type captionRec struct {
+	channelID string
+	had       bool
 }
 
 func (f *fakeStore) UpsertVideo(_ context.Context, v domain.Video) (string, error) {
@@ -91,6 +98,24 @@ func (f *fakeStore) RateLimitedVideoIDs(_ context.Context, _ string) (map[string
 	return cp, nil
 }
 
+func (f *fakeStore) UpsertChannelError(_ context.Context, _, _, _ string) error { return nil }
+
+func (f *fakeStore) CaptionlessChannels(_ context.Context, _ string) (map[string]bool, error) {
+	cp := make(map[string]bool, len(f.captionless))
+	for k, v := range f.captionless {
+		cp[k] = v
+	}
+	return cp, nil
+}
+
+func (f *fakeStore) RecordChannelCaptionOutcome(_ context.Context, _, channelID string, hadCaptions bool, threshold int, _ time.Duration) error {
+	if threshold <= 0 {
+		return nil
+	}
+	f.captionRecs = append(f.captionRecs, captionRec{channelID: channelID, had: hadCaptions})
+	return nil
+}
+
 func (f *fakeStore) SetTranscriptStatus(_ context.Context, _, videoID, status string) error {
 	if f.statuses == nil {
 		f.statuses = map[string]string{}
@@ -121,6 +146,12 @@ func vid(provID, title string) domain.Video {
 	return domain.Video{UserID: testUser, Provider: domain.ProviderYouTube, ProviderVideoID: provID, Title: title}
 }
 
+func vidAt(provID, title string, publishedAt time.Time) domain.Video {
+	v := vid(provID, title)
+	v.PublishedAt = publishedAt
+	return v
+}
+
 func quietLogger() *slog.Logger {
 	return slog.New(slog.NewTextHandler(io.Discard, nil))
 }
@@ -226,6 +257,145 @@ func TestRunOnce_ManualMode_ProcessesRequested(t *testing.T) {
 	require.Equal(t, []string{"id-v1"}, st.cleared, "the queue flag is cleared after summarizing")
 }
 
+// --- recency window (B1) ---------------------------------------------------
+
+// TestRunOnce_AutoMode_SkipsOldVideos: with a recency window set, auto mode
+// summarizes only videos published within the window; older ones are discovered
+// (upserted) but not auto-summarized — they wait for a manual request.
+func TestRunOnce_AutoMode_SkipsOldVideos(t *testing.T) {
+	base := time.Date(2026, 6, 8, 12, 0, 0, 0, time.UTC)
+	src := &fakeSource{
+		subs: []domain.Subscription{sub("chan1", "Channel One")},
+		videos: map[string][]domain.Video{"chan1": {
+			vidAt("recent", "Recent", base.Add(-24*time.Hour)), // 1d old → in window
+			vidAt("old", "Old", base.Add(-30*24*time.Hour)),    // 30d old → out of window
+		}},
+	}
+	st := &fakeStore{seen: map[string]bool{}, auto: true}
+	sink := &recordingSink{}
+	eng := usecase.NewEngine(src, fakeSummarizer{}, sink)
+	r := runner.New(src, st, eng, testUser, quietLogger(),
+		runner.WithAutoWindow(7*24*time.Hour), runner.WithClock(func() time.Time { return base }))
+
+	stats, err := r.RunOnce(context.Background())
+	require.NoError(t, err)
+	require.Equal(t, 1, stats.Summarized, "only the recent video is auto-summarized")
+	require.Equal(t, 1, stats.SkippedTooOld, "the old video is skipped by the recency bound")
+	require.Len(t, sink.delivered, 1)
+	require.Equal(t, "id-recent", sink.delivered[0].VideoID)
+	require.Len(t, st.upserted, 2, "both videos are still discovered and listed")
+}
+
+// TestRunOnce_AutoMode_OldVideoRequestedBypassesWindow: an explicit manual
+// request (summarize_requested) overrides the recency bound even in auto mode.
+func TestRunOnce_AutoMode_OldVideoRequestedBypassesWindow(t *testing.T) {
+	base := time.Date(2026, 6, 8, 12, 0, 0, 0, time.UTC)
+	src := &fakeSource{
+		subs:   []domain.Subscription{sub("chan1", "Channel One")},
+		videos: map[string][]domain.Video{"chan1": {vidAt("old", "Old", base.Add(-30*24*time.Hour))}},
+	}
+	st := &fakeStore{seen: map[string]bool{}, auto: true, requested: map[string]bool{"id-old": true}}
+	sink := &recordingSink{}
+	eng := usecase.NewEngine(src, fakeSummarizer{}, sink)
+	r := runner.New(src, st, eng, testUser, quietLogger(),
+		runner.WithAutoWindow(7*24*time.Hour), runner.WithClock(func() time.Time { return base }))
+
+	stats, err := r.RunOnce(context.Background())
+	require.NoError(t, err)
+	require.Equal(t, 1, stats.Summarized, "a requested old video is summarized despite the window")
+	require.Equal(t, 0, stats.SkippedTooOld)
+	require.Len(t, sink.delivered, 1)
+}
+
+// TestRunOnce_CaptionlessChannelSkipped: a channel flagged caption-less (ADR-024)
+// has its videos skipped from fetching but still discovered/listed, while a
+// normal channel's video is summarized.
+func TestRunOnce_CaptionlessChannelSkipped(t *testing.T) {
+	src := &fakeSource{
+		subs: []domain.Subscription{sub("dead", "Dead Channel"), sub("live", "Live Channel")},
+		videos: map[string][]domain.Video{
+			"dead": {vid("d1", "Dead One")},
+			"live": {vid("l1", "Live One")},
+		},
+	}
+	st := &fakeStore{seen: map[string]bool{}, auto: true, captionless: map[string]bool{"dead": true}}
+	sink := &recordingSink{}
+	eng := usecase.NewEngine(src, fakeSummarizer{}, sink)
+	r := runner.New(src, st, eng, testUser, quietLogger(),
+		runner.WithCaptionMemory(5, 14*24*time.Hour))
+
+	stats, err := r.RunOnce(context.Background())
+	require.NoError(t, err)
+	require.Equal(t, 1, stats.SkippedNoCaptionChannel, "dead channel's video skipped from fetch")
+	require.Equal(t, 1, stats.Summarized, "live channel's video still summarized")
+	require.Len(t, st.upserted, 2, "both videos are still discovered and listed")
+}
+
+// TestRunOnce_RecordsCaptionOutcomes: a no-caption result grows the channel's
+// streak (had=false); a successful summary resets it (had=true).
+func TestRunOnce_RecordsCaptionOutcomes(t *testing.T) {
+	src := &fakeSource{
+		subs: []domain.Subscription{sub("c1", "Has Caps"), sub("c2", "No Caps")},
+		videos: map[string][]domain.Video{
+			"c1": {vid("good", "Good")},
+			"c2": {vid("bad", "Bad")},
+		},
+		transcripts: map[string]domain.Transcript{
+			"bad": {Source: domain.SourceNone}, // no usable text → engine skips
+		},
+	}
+	st := &fakeStore{seen: map[string]bool{}, auto: true}
+	sink := &recordingSink{}
+	eng := usecase.NewEngine(src, fakeSummarizer{}, sink)
+	r := runner.New(src, st, eng, testUser, quietLogger(),
+		runner.WithCaptionMemory(5, 14*24*time.Hour))
+
+	_, err := r.RunOnce(context.Background())
+	require.NoError(t, err)
+	require.Contains(t, st.captionRecs, captionRec{channelID: "c1", had: true}, "captioned channel reset")
+	require.Contains(t, st.captionRecs, captionRec{channelID: "c2", had: false}, "no-caption channel streak grown")
+}
+
+// TestRunOnce_AutoWindowZero_SummarizesOld: a zero window disables the bound —
+// the pre-recency behaviour (summarize every unseen video) is preserved.
+func TestRunOnce_AutoWindowZero_SummarizesOld(t *testing.T) {
+	base := time.Date(2026, 6, 8, 12, 0, 0, 0, time.UTC)
+	src := &fakeSource{
+		subs:   []domain.Subscription{sub("chan1", "Channel One")},
+		videos: map[string][]domain.Video{"chan1": {vidAt("old", "Old", base.Add(-365*24*time.Hour))}},
+	}
+	st := &fakeStore{seen: map[string]bool{}, auto: true}
+	sink := &recordingSink{}
+	eng := usecase.NewEngine(src, fakeSummarizer{}, sink)
+	r := runner.New(src, st, eng, testUser, quietLogger(),
+		runner.WithClock(func() time.Time { return base })) // no WithAutoWindow → 0
+
+	stats, err := r.RunOnce(context.Background())
+	require.NoError(t, err)
+	require.Equal(t, 1, stats.Summarized, "window disabled → old video summarized")
+	require.Equal(t, 0, stats.SkippedTooOld)
+}
+
+// TestRunOnce_AutoMode_UndatedVideoSummarized: a video with no published_at
+// cannot be aged out — it is processed, not silently stranded.
+func TestRunOnce_AutoMode_UndatedVideoSummarized(t *testing.T) {
+	base := time.Date(2026, 6, 8, 12, 0, 0, 0, time.UTC)
+	src := &fakeSource{
+		subs:   []domain.Subscription{sub("chan1", "Channel One")},
+		videos: map[string][]domain.Video{"chan1": {vid("undated", "Undated")}}, // zero PublishedAt
+	}
+	st := &fakeStore{seen: map[string]bool{}, auto: true}
+	sink := &recordingSink{}
+	eng := usecase.NewEngine(src, fakeSummarizer{}, sink)
+	r := runner.New(src, st, eng, testUser, quietLogger(),
+		runner.WithAutoWindow(7*24*time.Hour), runner.WithClock(func() time.Time { return base }))
+
+	stats, err := r.RunOnce(context.Background())
+	require.NoError(t, err)
+	require.Equal(t, 1, stats.Summarized, "an undated video is processed, not aged out")
+	require.Equal(t, 0, stats.SkippedTooOld)
+}
+
 // noFetchSource fails the test if a transcript fetch happens — used to prove the
 // runner skips a rate-limited video before touching the caption endpoint.
 type noFetchSource struct{ *fakeSource }
@@ -296,3 +466,89 @@ func TestRunOnce_UpsertsEveryCandidate(t *testing.T) {
 	require.NoError(t, err)
 	require.Len(t, st.upserted, 2, "every candidate is upserted, including seen ones")
 }
+
+// TestRunOnce_NewestFirstOrdering asserts that within a pass, candidates are
+// processed newest-first (published_at DESC, NULLS LAST) across all channels,
+// and that the set of processed videos is identical to what per-channel inline
+// processing would produce (only the order differs).
+//
+// Fixture: two channels, four videos with mixed published_at (one NULL).
+//
+//	Per-channel (before): chanA=[v-old, v-mid], chanB=[v-new, v-null]
+//	                    → [v-old, v-mid, v-new, v-null]
+//	Newest-first (after): [v-new, v-mid, v-old, v-null]
+func TestRunOnce_NewestFirstOrdering(t *testing.T) {
+	old := time.Date(2024, 1, 1, 0, 0, 0, 0, time.UTC)
+	mid := time.Date(2024, 6, 1, 0, 0, 0, 0, time.UTC)
+	newt := time.Date(2024, 12, 1, 0, 0, 0, 0, time.UTC)
+	// zero time = NULL published_at (schema 001: nullable)
+
+	src := &fakeSource{
+		subs: []domain.Subscription{
+			sub("chanA", "Channel A"),
+			sub("chanB", "Channel B"),
+		},
+		videos: map[string][]domain.Video{
+			"chanA": {
+				vidAt("v-old", "Old Video", old),
+				vidAt("v-mid", "Mid Video", mid),
+			},
+			"chanB": {
+				vidAt("v-new", "New Video", newt),
+				vidAt("v-null", "No Date Video", time.Time{}), // NULL
+			},
+		},
+	}
+	st := &fakeStore{seen: map[string]bool{}, auto: true}
+	sink := &recordingSink{}
+	eng := usecase.NewEngine(src, fakeSummarizer{}, sink)
+	r := runner.New(src, st, eng, testUser, quietLogger())
+
+	stats, err := r.RunOnce(context.Background())
+	require.NoError(t, err)
+
+	// Same set: all 4 candidates processed regardless of order.
+	require.Equal(t, 4, stats.Candidates)
+	require.Equal(t, 4, stats.Summarized, "same set of videos processed as per-channel order")
+	require.Len(t, sink.delivered, 4)
+
+	// Build video-id → delivery-position map.
+	order := make(map[string]int, len(sink.delivered))
+	for i, s := range sink.delivered {
+		order[s.VideoID] = i
+		t.Logf("position %d: %s", i, s.VideoID)
+	}
+
+	require.Less(t, order["id-v-new"], order["id-v-mid"], "newest (Dec) before mid (Jun)")
+	require.Less(t, order["id-v-mid"], order["id-v-old"], "mid (Jun) before old (Jan)")
+	require.Less(t, order["id-v-old"], order["id-v-null"], "dated before NULL (NULLS LAST)")
+}
+
+// TestRunOnce_NewestFirstNullsOnly asserts that when all candidates have NULL
+// published_at, discovery order (stable) is preserved as the tiebreak.
+func TestRunOnce_NewestFirstNullsOnly(t *testing.T) {
+	src := &fakeSource{
+		subs: []domain.Subscription{
+			sub("chanA", "Channel A"),
+			sub("chanB", "Channel B"),
+		},
+		videos: map[string][]domain.Video{
+			"chanA": {vidAt("v1", "V1", time.Time{}), vidAt("v2", "V2", time.Time{})},
+			"chanB": {vidAt("v3", "V3", time.Time{})},
+		},
+	}
+	st := &fakeStore{seen: map[string]bool{}, auto: true}
+	sink := &recordingSink{}
+	eng := usecase.NewEngine(src, fakeSummarizer{}, sink)
+	r := runner.New(src, st, eng, testUser, quietLogger())
+
+	stats, err := r.RunOnce(context.Background())
+	require.NoError(t, err)
+	require.Equal(t, 3, stats.Summarized, "all null-date videos processed")
+
+	// Discovery order: chanA[v1, v2], chanB[v3] → [v1, v2, v3].
+	// All have NULL published_at so the sort is stable; discovery order must hold.
+	require.Equal(t, "id-v1", sink.delivered[0].VideoID)
+	require.Equal(t, "id-v2", sink.delivered[1].VideoID)
+	require.Equal(t, "id-v3", sink.delivered[2].VideoID)
+}

internal/usecase/engine.go

@@ -27,6 +27,13 @@ type Engine struct {
 	AI     ports.Summarizer
 	Sinks  []ports.Sink
 
+	// Transcripts, when set, is the shared transcript cache (ADR-021): the engine
+	// reads it before any caption fetch and writes resolved transcripts back, so
+	// re-analysis — the same user re-summarizing, or a second user with the same
+	// video — never re-touches YouTube (ADR-010/014). Optional: nil disables
+	// persistence (fetch every time), keeping the pure-core/scaffold wiring valid.
+	Transcripts ports.TranscriptStore
+
 	// processed dedups videos within this engine's lifetime so a video is not
 	// summarized twice when the watcher sees it again. Durable cross-restart
 	// dedup is the store's concern (a resolved TRANSCRIPT / existing SUMMARY,
@@ -57,9 +64,9 @@ type ProcessResult struct {
 // resolve transcript -> (summarize -> deliver) | skip.
 // See docs/use-cases/summarize_new_video.feature.
 func (e *Engine) ProcessNewVideo(ctx context.Context, v domain.Video) (ProcessResult, error) {
-	t, err := e.Source.FetchTranscript(ctx, v)
+	t, err := e.resolveTranscript(ctx, v)
 	if err != nil {
-		return ProcessResult{Video: v}, fmt.Errorf("fetch transcript: %w", err)
+		return ProcessResult{Video: v}, err
 	}
 	if !t.HasText() {
 		// No usable transcript: record the skip, produce no summary, deliver nothing
@@ -86,6 +93,39 @@ func (e *Engine) ProcessNewVideo(ctx context.Context, v domain.Video) (ProcessRe
 	return ProcessResult{Video: v, Summary: &sum, TranscriptSource: string(t.Source)}, errors.Join(errs...)
 }
 
+// resolveTranscript returns v's transcript, reading the shared store first
+// (ADR-021): a stored transcript — including a stored SourceNone (captions
+// permanently absent) — is returned without touching YouTube, so re-analysis
+// never re-fetches. On a store miss it fetches through the source (which gates
+// the caption call, ADR-014) and persists the terminal outcome so the next
+// analysis, for any user, reads from the store. A transient SourceRateLimited is
+// returned to the caller (the runner stamps a per-user backoff) but never stored,
+// so persistence can never mask a 429 as a permanent "no transcript". When no
+// TranscriptStore is wired the engine simply fetches every time.
+func (e *Engine) resolveTranscript(ctx context.Context, v domain.Video) (domain.Transcript, error) {
+	if e.Transcripts != nil {
+		stored, ok, err := e.Transcripts.GetTranscript(ctx, string(v.Provider), v.ProviderVideoID)
+		if err != nil {
+			return domain.Transcript{}, fmt.Errorf("get stored transcript: %w", err)
+		}
+		if ok {
+			return stored, nil
+		}
+	}
+
+	t, err := e.Source.FetchTranscript(ctx, v)
+	if err != nil {
+		return domain.Transcript{}, fmt.Errorf("fetch transcript: %w", err)
+	}
+
+	if e.Transcripts != nil && t.Source != domain.SourceRateLimited {
+		if err := e.Transcripts.SaveTranscript(ctx, string(v.Provider), v.ProviderVideoID, t); err != nil {
+			return domain.Transcript{}, fmt.Errorf("save transcript: %w", err)
+		}
+	}
+	return t, nil
+}
+
 // ProcessNewVideos walks a user's subscriptions and processes each newly seen
 // video. Only videos surfaced via the user's subscriptions are considered, so a
 // channel the user is not subscribed to is never processed. A video already

internal/usecase/engine_transcript_test.go

@@ -0,0 +1,187 @@
+package usecase
+
+import (
+	"context"
+	"testing"
+
+	"gitea.d-ma.be/mathias/tapir/internal/domain"
+)
+
+// These tests pin the ADR-021 read-stored-first behaviour at the engine core:
+// a stored transcript is summarized without re-touching the source, a miss
+// fetches once and persists, and a transient rate-limit is never cached.
+
+type recordingSource struct {
+	transcript domain.Transcript
+	fetchCalls int
+}
+
+func (s *recordingSource) ListSubscriptions(context.Context, string) ([]domain.Subscription, error) {
+	return nil, nil
+}
+
+func (s *recordingSource) NewVideos(context.Context, domain.Subscription) ([]domain.Video, error) {
+	return nil, nil
+}
+
+func (s *recordingSource) FetchTranscript(context.Context, domain.Video) (domain.Transcript, error) {
+	s.fetchCalls++
+	return s.transcript, nil
+}
+
+type fakeTranscriptStore struct {
+	stored map[string]domain.Transcript
+	saves  int
+}
+
+func newFakeTranscriptStore() *fakeTranscriptStore {
+	return &fakeTranscriptStore{stored: make(map[string]domain.Transcript)}
+}
+
+func (f *fakeTranscriptStore) key(provider, id string) string { return provider + "|" + id }
+
+func (f *fakeTranscriptStore) GetTranscript(_ context.Context, provider, id string) (domain.Transcript, bool, error) {
+	t, ok := f.stored[f.key(provider, id)]
+	return t, ok, nil
+}
+
+func (f *fakeTranscriptStore) SaveTranscript(_ context.Context, provider, id string, t domain.Transcript) error {
+	f.saves++
+	f.stored[f.key(provider, id)] = t
+	return nil
+}
+
+type countingSummarizer struct{ calls int }
+
+func (c *countingSummarizer) Summarize(_ context.Context, v domain.Video, _ domain.Transcript) (domain.Summary, error) {
+	c.calls++
+	return domain.Summary{VideoID: v.ID, UserID: v.UserID, Summary: "s", AIProvider: "local"}, nil
+}
+
+type nopSink struct{}
+
+func (nopSink) Name() string                                  { return "nop" }
+func (nopSink) Deliver(context.Context, domain.Summary) error { return nil }
+
+func testVideo() domain.Video {
+	return domain.Video{ID: "v1", UserID: "u1", Provider: domain.ProviderYouTube, ProviderVideoID: "yt1"}
+}
+
+func TestProcessNewVideo_StoredTranscriptSkipsFetch(t *testing.T) {
+	src := &recordingSource{}
+	ts := newFakeTranscriptStore()
+	ts.stored[ts.key("youtube", "yt1")] = domain.Transcript{Source: domain.SourceCaptions, Content: "stored words"}
+	sum := &countingSummarizer{}
+	eng := NewEngine(src, sum, nopSink{})
+	eng.Transcripts = ts
+
+	res, err := eng.ProcessNewVideo(context.Background(), testVideo())
+	if err != nil {
+		t.Fatalf("ProcessNewVideo: %v", err)
+	}
+	if src.fetchCalls != 0 {
+		t.Fatalf("stored transcript must not re-fetch from source; got %d fetches", src.fetchCalls)
+	}
+	if ts.saves != 0 {
+		t.Fatalf("a store hit must not re-save; got %d saves", ts.saves)
+	}
+	if sum.calls != 1 || res.Summary == nil {
+		t.Fatalf("expected a summary from the stored transcript; calls=%d summary=%v", sum.calls, res.Summary)
+	}
+}
+
+func TestProcessNewVideo_StoreMissFetchesAndPersists(t *testing.T) {
+	src := &recordingSource{transcript: domain.Transcript{Source: domain.SourceCaptions, Language: "en", Content: "fetched words"}}
+	ts := newFakeTranscriptStore()
+	sum := &countingSummarizer{}
+	eng := NewEngine(src, sum, nopSink{})
+	eng.Transcripts = ts
+
+	if _, err := eng.ProcessNewVideo(context.Background(), testVideo()); err != nil {
+		t.Fatalf("ProcessNewVideo: %v", err)
+	}
+	if src.fetchCalls != 1 {
+		t.Fatalf("a store miss must fetch exactly once; got %d", src.fetchCalls)
+	}
+	if ts.saves != 1 {
+		t.Fatalf("a fetched transcript must be persisted; got %d saves", ts.saves)
+	}
+	got, ok, _ := ts.GetTranscript(context.Background(), "youtube", "yt1")
+	if !ok || got.Content != "fetched words" {
+		t.Fatalf("persisted transcript not readable back: ok=%v content=%q", ok, got.Content)
+	}
+}
+
+// The second summarize of the same video reads the persisted transcript and does
+// NOT re-fetch — the primary ADR-021 win, proven end to end at the engine.
+func TestProcessNewVideo_SecondSummarizeDoesNotRefetch(t *testing.T) {
+	src := &recordingSource{transcript: domain.Transcript{Source: domain.SourceCaptions, Content: "words"}}
+	ts := newFakeTranscriptStore()
+	eng := NewEngine(src, &countingSummarizer{}, nopSink{})
+	eng.Transcripts = ts
+
+	for i := 0; i < 2; i++ {
+		if _, err := eng.ProcessNewVideo(context.Background(), testVideo()); err != nil {
+			t.Fatalf("pass %d: %v", i, err)
+		}
+	}
+	if src.fetchCalls != 1 {
+		t.Fatalf("the second summarize must reuse the stored transcript; got %d fetches", src.fetchCalls)
+	}
+}
+
+// A stored "no captions" outcome short-circuits before both fetch and summarize.
+func TestProcessNewVideo_StoredNoneSkipsFetchAndSummarize(t *testing.T) {
+	src := &recordingSource{}
+	ts := newFakeTranscriptStore()
+	ts.stored[ts.key("youtube", "yt1")] = domain.Transcript{Source: domain.SourceNone}
+	sum := &countingSummarizer{}
+	eng := NewEngine(src, sum, nopSink{})
+	eng.Transcripts = ts
+
+	res, err := eng.ProcessNewVideo(context.Background(), testVideo())
+	if err != nil {
+		t.Fatalf("ProcessNewVideo: %v", err)
+	}
+	if !res.Skipped {
+		t.Fatal("a stored SourceNone must skip")
+	}
+	if src.fetchCalls != 0 || sum.calls != 0 {
+		t.Fatalf("stored none must neither fetch nor summarize; fetches=%d calls=%d", src.fetchCalls, sum.calls)
+	}
+}
+
+// A transient 429 is surfaced (so the runner backs off per-user) but never cached
+// as a shared terminal state — otherwise it would mask a rate-limit as permanent.
+func TestProcessNewVideo_RateLimitedIsNotPersisted(t *testing.T) {
+	src := &recordingSource{transcript: domain.Transcript{Source: domain.SourceRateLimited}}
+	ts := newFakeTranscriptStore()
+	eng := NewEngine(src, &countingSummarizer{}, nopSink{})
+	eng.Transcripts = ts
+
+	res, err := eng.ProcessNewVideo(context.Background(), testVideo())
+	if err != nil {
+		t.Fatalf("ProcessNewVideo: %v", err)
+	}
+	if !res.Skipped || res.TranscriptSource != string(domain.SourceRateLimited) {
+		t.Fatalf("expected a rate-limited skip; skipped=%v source=%q", res.Skipped, res.TranscriptSource)
+	}
+	if ts.saves != 0 {
+		t.Fatalf("a transient rate-limit must not be persisted; got %d saves", ts.saves)
+	}
+}
+
+// With no TranscriptStore wired the engine fetches every time (back-compat).
+func TestProcessNewVideo_NilStoreFetchesEveryTime(t *testing.T) {
+	src := &recordingSource{transcript: domain.Transcript{Source: domain.SourceCaptions, Content: "words"}}
+	eng := NewEngine(src, &countingSummarizer{}, nopSink{})
+
+	for i := 0; i < 2; i++ {
+		if _, err := eng.ProcessNewVideo(context.Background(), testVideo()); err != nil {
+			t.Fatalf("pass %d: %v", i, err)
+		}
+	}
+	if src.fetchCalls != 2 {
+		t.Fatalf("nil store must fetch every time; got %d", src.fetchCalls)
+	}
+}

internal/web/account.go

@@ -33,7 +33,12 @@ func (a *App) handleAccount(w http.ResponseWriter, r *http.Request) {
 		a.serverError(w, r, "summarize mode", err)
 		return
 	}
-	a.render(w, r, AccountPage(name, email, conns, auto, takeFlash(w, r)))
+	channelErrs, err := a.Store.ListChannelErrors(r.Context(), userID)
+	if err != nil {
+		a.serverError(w, r, "channel errors", err)
+		return
+	}
+	a.render(w, r, AccountPage(name, email, conns, auto, channelErrs, takeFlash(w, r)))
 }
 
 // handleDisconnect removes a provider connection: it deletes the OAuth token from

internal/web/connect.go

@@ -23,6 +23,15 @@ type Connections interface {
 	UpsertConnection(ctx context.Context, userID string, c store.Connection) error
 }
 
+// DiscoveryTrigger requests an out-of-band discovery pass for a user. The connect
+// flow fires it the moment a YouTube account is linked so videos appear promptly
+// instead of waiting for the next scheduled pass (#6). Enqueue must be
+// non-blocking and safe to call from the request goroutine; the implementation
+// owns serialization with the scheduler (one pass at a time). nil = no trigger.
+type DiscoveryTrigger interface {
+	Enqueue(userID string)
+}
+
 // connectStateTTL bounds how long a generated CSRF state is valid between the
 // connect redirect and the provider callback.
 const connectStateTTL = 10 * time.Minute
@@ -43,6 +52,10 @@ type ConnectHandler struct {
 	Conns   Connections
 	Log     *slog.Logger
 
+	// Discovery, when set, is fired after a successful connect so the new
+	// connection's videos are discovered immediately (#6). Optional.
+	Discovery DiscoveryTrigger
+
 	states *connectStateStore
 	now    func() time.Time
 }
@@ -134,6 +147,12 @@ func (h *ConnectHandler) handleCallback(w http.ResponseWriter, r *http.Request)
 		return
 	}
 
+	// Discover this user's videos now rather than waiting for the next scheduled
+	// pass (#6). Non-blocking; the trigger serializes with the scheduler.
+	if h.Discovery != nil {
+		h.Discovery.Enqueue(userID)
+	}
+
 	setFlash(w, flashConnected)
 	http.Redirect(w, r, "/", http.StatusSeeOther)
 }

internal/web/connect_test.go

@@ -45,6 +45,24 @@ func (c *fakeConns) UpsertConnection(_ context.Context, userID string, conn stor
 	return nil
 }
 
+// fakeTrigger records Enqueue calls so a test can assert connect fired discovery.
+type fakeTrigger struct {
+	mu    sync.Mutex
+	users []string
+}
+
+func (f *fakeTrigger) Enqueue(userID string) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	f.users = append(f.users, userID)
+}
+
+func (f *fakeTrigger) seen() []string {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	return append([]string(nil), f.users...)
+}
+
 // tokenServer fakes Google's token endpoint, returning body for any POST.
 func tokenServer(t *testing.T, body string) *httptest.Server {
 	t.Helper()
@@ -126,6 +144,36 @@ func TestCallbackExchangesAndRecordsConnection(t *testing.T) {
 	require.Equal(t, wantRef, conns.conn.TokenRef)
 }
 
+func TestCallbackTriggersDiscovery(t *testing.T) {
+	srv := tokenServer(t,
+		`{"access_token":"at","refresh_token":"rt-secret","token_type":"Bearer","expires_in":3600}`)
+	app := newConnectApp(t, srv.URL, &fakeWriter{}, &fakeConns{})
+	trig := &fakeTrigger{}
+	app.Connect.Discovery = trig
+
+	state := connectState(t, app)
+	rec := do(t, app, httptest.NewRequest(http.MethodGet,
+		"/oauth/youtube/callback?state="+state+"&code=the-code", nil))
+
+	require.Equal(t, http.StatusSeeOther, rec.Code)
+	require.Equal(t, []string{userID}, trig.seen(),
+		"a successful connect must trigger discovery for the connecting user")
+}
+
+func TestCallbackNoDiscoveryOnFailedConnect(t *testing.T) {
+	srv := tokenServer(t,
+		`{"access_token":"at","refresh_token":"rt","token_type":"Bearer","expires_in":3600}`)
+	app := newConnectApp(t, srv.URL, &fakeWriter{}, &fakeConns{})
+	trig := &fakeTrigger{}
+	app.Connect.Discovery = trig
+
+	// No state → CSRF reject → nothing connected, so no discovery.
+	rec := do(t, app, httptest.NewRequest(http.MethodGet,
+		"/oauth/youtube/callback?code=the-code", nil))
+	require.Equal(t, http.StatusBadRequest, rec.Code)
+	require.Empty(t, trig.seen(), "a failed connect must not trigger discovery")
+}
+
 func TestCallbackRejectsMissingState(t *testing.T) {
 	srv := tokenServer(t,
 		`{"access_token":"at","refresh_token":"rt","token_type":"Bearer","expires_in":3600}`)

internal/web/handlers.go

@@ -3,12 +3,16 @@ package web
 import (
 	"context"
 	"errors"
+	"html/template"
+	"io"
 	"log/slog"
 	"net/http"
+	"time"
 
 	"github.com/a-h/templ"
 
 	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
+	"gitea.d-ma.be/mathias/tapir/internal/domain"
 )
 
 // Store is the read/write surface the web handlers depend on — a narrow port over
@@ -17,6 +21,9 @@ import (
 // fake without a database.
 type Store interface {
 	ListVideos(ctx context.Context, userID string, limit int) ([]store.SummaryRow, error)
+	// DistinctChannels lists the user's source channels — the options for the
+	// feed's channel multi-select filter.
+	DistinctChannels(ctx context.Context, userID string) ([]string, error)
 	GetSummaryByVideo(ctx context.Context, userID, videoID string) (*store.SummaryRow, error)
 	GetVideoRow(ctx context.Context, userID, videoID string) (*store.SummaryRow, error)
 	ActionsFor(ctx context.Context, userID string, videoIDs []string) (map[string][]string, error)
@@ -29,11 +36,27 @@ type Store interface {
 	SetAutoSummarize(ctx context.Context, userID string, enabled bool) error
 	RequestSummarize(ctx context.Context, userID, videoID string) error
 
+	// UpsertVideo persists a pasted video (idempotent on user+provider+video id,
+	// so it also dedups) and returns its durable store id.
+	UpsertVideo(ctx context.Context, v domain.Video) (string, error)
+
 	// Account management (the /account page, disconnect, delete-account).
 	ConnectionsForUser(ctx context.Context, userID string) ([]store.Connection, error)
 	DeleteConnection(ctx context.Context, userID, provider string) error
 	DeleteUser(ctx context.Context, userID string) error
 	DisplayName(ctx context.Context, userID string) (string, error)
+	// ListChannelErrors returns channels that returned HTTP 404 (deleted/private) on
+	// the most recent discovery pass, shown on the account page as a warning.
+	ListChannelErrors(ctx context.Context, userID string) ([]store.ChannelError, error)
+
+	// SetTranscriptStatus clears or updates a video's transcript backoff state.
+	// Used by handleRetryNow to clear rate_limited_at before immediate processing.
+	SetTranscriptStatus(ctx context.Context, userID, videoID, status string) error
+
+	// StampLogin records (throttled, one row per user per day) that the resolved
+	// user was active on this request — the read-side Stage-0 usage signal the
+	// registration gate stamps for every authenticated request.
+	StampLogin(ctx context.Context, userID string) error
 }
 
 // SecretRemover deletes secret material by its opaque ref. *secrets.FileStore
@@ -65,9 +88,38 @@ type App struct {
 	// background goroutine (the "Summarize" button kicks it off). Nil = queue-only:
 	// the button flips the DB flag and the next `tapir run` does the work.
 	Processor Processor
+	// Fetcher, when non-nil, resolves an arbitrary YouTube video id to metadata for
+	// the paste-a-URL flow (Feature 2). Nil = the /paste route is not mounted.
+	Fetcher VideoFetcher
 	// Processing tracks in-flight immediate summarizations so the status endpoint
 	// shows the animation until the summary lands. The zero value is ready to use.
 	Processing ProcessingSet
+	// RecencyWindow mirrors the auto-summarize recency bound: un-summarized videos
+	// published before now-RecencyWindow collapse into the "older videos"
+	// disclosure on the list, so the readable summaries are not buried (B3). Zero
+	// disables the collapse (everything stays inline).
+	RecencyWindow time.Duration
+	// Now is an injectable clock for the recency cutoff (tests fix it). Nil =
+	// time.Now.
+	Now func() time.Time
+}
+
+// now returns the App's clock (time.Now unless overridden for tests).
+func (a *App) now() time.Time {
+	if a.Now != nil {
+		return a.Now()
+	}
+	return time.Now()
+}
+
+// recencyCutoff is the timestamp before which an un-summarized video counts as
+// "older" and collapses into the disclosure. A zero RecencyWindow yields the zero
+// time, which bucketRows treats as "collapse disabled".
+func (a *App) recencyCutoff() time.Time {
+	if a.RecencyWindow <= 0 {
+		return time.Time{}
+	}
+	return a.now().Add(-a.RecencyWindow)
 }
 
 func (a *App) logger() *slog.Logger {
@@ -92,6 +144,10 @@ func (a *App) Router() http.Handler {
 	app.HandleFunc("GET /v/{videoId}", a.handleDetail)
 	app.HandleFunc("POST /v/{videoId}/action", a.handleAction)
 	app.HandleFunc("POST /v/{videoId}/summarize", a.handleRequestSummarize)
+	app.HandleFunc("POST /v/{videoId}/retry-now", a.handleRetryNow)
+	if a.Fetcher != nil {
+		app.HandleFunc("POST /paste", a.handlePaste)
+	}
 	app.HandleFunc("GET /v/{videoId}/status", a.handleStatus)
 	app.HandleFunc("GET /register", a.handleRegisterForm)
 	app.HandleFunc("POST /register", a.handleRegister)
@@ -143,36 +199,54 @@ func (a *App) handleList(w http.ResponseWriter, r *http.Request) {
 	}
 	q := r.URL.Query()
 	f := Filter{
-		Channel: q.Get("channel"),
-		From:    q.Get("from"),
-		To:      q.Get("to"),
+		Channels:       nonEmptyStrings(q["channel"]),
+		From:           q.Get("from"),
+		To:             q.Get("to"),
+		OnlySummarized: q.Get("summarized") == "1",
 	}
 
-	rows, err := a.Store.ListVideos(r.Context(), userID, 0)
+	allRows, err := a.Store.ListVideos(r.Context(), userID, 0)
 	if err != nil {
 		a.serverError(w, r, "list videos", err)
 		return
 	}
-	rows = f.apply(rows)
+	stats := pipelineStats(allRows)
+	rows := f.apply(allRows)
+	buckets := bucketRows(rows, a.recencyCutoff())
 
-	// hasConnected drives the empty state: a fresh account with a connection but
-	// no `tapir run` yet has zero rows, and we want it to read "connected, run
-	// tapir" rather than "nothing here". Only needed when the list is empty.
-	hasConnected := false
-	if len(rows) == 0 {
-		conns, err := a.Store.ConnectionsForUser(r.Context(), userID)
-		if err != nil {
-			a.serverError(w, r, "connections for user", err)
-			return
-		}
-		hasConnected = len(conns) > 0
+	// Channel options for the multi-select filter (the user's source channels).
+	channels, err := a.Store.DistinctChannels(r.Context(), userID)
+	if err != nil {
+		a.serverError(w, r, "distinct channels", err)
+		return
+	}
+
+	// hasConnected drives both the paste box (shown to ANY connected user, #2) and
+	// the empty-state copy (a fresh account with a connection but no discovery pass
+	// yet reads "connected, summaries land gradually" rather than "nothing here").
+	// Computed every render — not only when empty — so a user with videos still
+	// gets the paste box.
+	conns, err := a.Store.ConnectionsForUser(r.Context(), userID)
+	if err != nil {
+		a.serverError(w, r, "connections for user", err)
+		return
+	}
+	hasConnected := len(conns) > 0
+
+	// Summarization mode drives the backlog copy: an auto user is told summaries
+	// land gradually; a manual user is told to click Summarize (the first pilot
+	// user sat in manual mode reading "land automatically" and waited forever).
+	autoSummarize, err := a.Store.GetAutoSummarize(r.Context(), userID)
+	if err != nil {
+		a.serverError(w, r, "summarize mode", err)
+		return
 	}
 
 	if isHTMX(r) {
-		a.render(w, r, summaryList(rows, hasConnected))
+		a.render(w, r, summaryList(buckets, hasConnected, autoSummarize))
 		return
 	}
-	a.render(w, r, ListPage(rows, f, takeFlash(w, r), hasConnected))
+	a.render(w, r, ListPage(buckets, f, stats, takeFlash(w, r), hasConnected, channels, autoSummarize))
 }
 
 // handleDetail renders one summary in full (highlights, takeaways, action group).
@@ -280,6 +354,109 @@ func (a *App) handleRequestSummarize(w http.ResponseWriter, r *http.Request) {
 	a.render(w, r, VideoCard(*row))
 }
 
+// handlePaste handles "paste a YouTube URL" (Feature 2). It parses the video id,
+// fetches metadata (Data API — ungated), upserts a subscription-less video row
+// scoped to the user (idempotent, so it also dedups), and — if the video isn't
+// already summarized — requests a summary and kicks off immediate processing
+// through the SAME rate gate as the Summarize button. An explicit paste is a
+// manual request, so it summarizes regardless of the recency window. A video that
+// turns out to have no captions resolves to the honest "no transcript" terminal
+// state via the engine (ADR-010), not an error here.
+func (a *App) handlePaste(w http.ResponseWriter, r *http.Request) {
+	userID, ok := a.currentUserID(w, r)
+	if !ok {
+		return
+	}
+	videoID, err := parseYouTubeVideoID(r.FormValue("url"))
+	if err != nil {
+		a.pasteFailure(w, http.StatusBadRequest, "That doesn't look like a YouTube video link.")
+		return
+	}
+
+	v, err := a.Fetcher.FetchVideo(r.Context(), userID, videoID)
+	if errors.Is(err, domain.ErrVideoNotFound) {
+		a.pasteFailure(w, http.StatusNotFound, "That video couldn't be found — it may be private or removed.")
+		return
+	}
+	if err != nil {
+		a.serverError(w, r, "paste fetch", err)
+		return
+	}
+
+	id, err := a.Store.UpsertVideo(r.Context(), v)
+	if err != nil {
+		a.serverError(w, r, "paste upsert", err)
+		return
+	}
+	row, err := a.Store.GetVideoRow(r.Context(), userID, id)
+	if err != nil {
+		a.serverError(w, r, "paste get video", err)
+		return
+	}
+
+	// Dedup: already in the feed with a summary — surface the existing entry,
+	// don't re-summarize.
+	if row.Summarized {
+		a.render(w, r, VideoCard(*row))
+		return
+	}
+
+	// New or unsummarized: queue + (if a Processor is wired) summarize now, through
+	// the shared gate. RequestSummarize makes it durable even if the process dies.
+	if err := a.Store.RequestSummarize(r.Context(), userID, id); err != nil {
+		a.serverError(w, r, "paste request summarize", err)
+		return
+	}
+	if a.Processor != nil {
+		a.startProcessing(userID, id)
+		a.render(w, r, processingCard(*row))
+		return
+	}
+	a.render(w, r, VideoCard(*row))
+}
+
+// pasteFailure renders a minimal inline error fragment for the paste form (HTMX
+// swaps it in). No templ dependency so it renders even on a bad-input fast path.
+func (a *App) pasteFailure(w http.ResponseWriter, status int, msg string) {
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	w.WriteHeader(status)
+	_, _ = io.WriteString(w, `<p class="paste-error" role="alert">`+template.HTMLEscapeString(msg)+`</p>`)
+}
+
+// handleRetryNow handles the "Try now" button on rate-limited video cards. It
+// clears the rate_limited_at backoff so the scheduler won't skip the video, then
+// triggers an immediate ProcessVideo — same background path as handleRequestSummarize.
+// The rate gate (globalFetchGate) still applies, so this is safe under concurrent use.
+func (a *App) handleRetryNow(w http.ResponseWriter, r *http.Request) {
+	userID, ok := a.currentUserID(w, r)
+	if !ok {
+		return
+	}
+	videoID := r.PathValue("videoId")
+
+	// Clear the backoff so the scheduler won't skip this video on the next pass.
+	if err := a.Store.SetTranscriptStatus(r.Context(), userID, videoID, "none"); err != nil {
+		a.serverError(w, r, "clear rate limit", err)
+		return
+	}
+
+	if !isHTMX(r) {
+		http.Redirect(w, r, "/", http.StatusSeeOther)
+		return
+	}
+	row, err := a.Store.GetVideoRow(r.Context(), userID, videoID)
+	if err != nil {
+		a.serverError(w, r, "get video", err)
+		return
+	}
+	if a.Processor != nil {
+		a.startProcessing(userID, videoID)
+		a.render(w, r, processingCard(*row))
+		return
+	}
+	a.render(w, r, VideoCard(*row))
+}
+
 // startProcessing marks a video in-flight and summarizes it in the background.
 // The goroutine uses a detached context — not the request's, which is cancelled
 // when the handler returns — and clears the in-flight mark on completion. On
@@ -318,11 +495,22 @@ func (a *App) handleStatus(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if row.Summarized || !a.Processing.Has(processingKey(userID, videoID)) {
+	// Honest, state-aware status (ADR-025). Order matters: a finished summary wins;
+	// an in-flight goroutine shows the working spinner; a recorded rate-limit shows
+	// the calm "waiting, will retry" card that keeps polling; a recorded "none" is
+	// terminal; anything else falls back to the normal card.
+	switch {
+	case row.Summarized:
+		a.render(w, r, VideoCard(*row))
+	case a.Processing.Has(processingKey(userID, videoID)):
+		a.render(w, r, processingCard(*row))
+	case row.TranscriptStatus == "rate_limited":
+		a.render(w, r, waitingCard(*row))
+	case row.TranscriptStatus == "none":
+		a.render(w, r, noCaptionsCard(*row))
+	default:
 		a.render(w, r, VideoCard(*row))
-		return
 	}
-	a.render(w, r, processingCard(*row))
 }
 
 // handleSummarizeMode toggles the user's auto/manual summarization mode. The form

internal/web/handlers_test.go

@@ -7,6 +7,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"os"
+	"path/filepath"
 	"strings"
 	"testing"
 	"time"
@@ -26,10 +27,22 @@ import (
 var dsn string
 
 func TestMain(m *testing.M) {
-	const port = 54330 // distinct from the store package's embedded PG (54329)
+	// Per-process port + dirs so concurrent `go test` runs (e.g. a push-run and a
+	// tag-run in CI) never collide on a fixed port or shared data dir. Base 55000
+	// keeps web's range distinct from the store package (54000). Shared CachePath
+	// downloads the PG archive once.
+	port := uint32(55000 + os.Getpid()%1000)
 	dsn = fmt.Sprintf("postgres://postgres:postgres@localhost:%d/postgres?sslmode=disable", port)
 
-	pg := embeddedpostgres.NewDatabase(embeddedpostgres.DefaultConfig().Port(port))
+	rt := filepath.Join(os.TempDir(), fmt.Sprintf("tapir-epg-web-%d", os.Getpid()))
+	pg := embeddedpostgres.NewDatabase(
+		embeddedpostgres.DefaultConfig().
+			Port(port).
+			RuntimePath(rt).
+			DataPath(filepath.Join(rt, "data")).
+			BinariesPath(filepath.Join(rt, "bin")).
+			CachePath(filepath.Join(os.TempDir(), "tapir-epg-cache")),
+	)
 	if err := pg.Start(); err != nil {
 		fmt.Fprintf(os.Stderr, "embedded-postgres start: %v\n", err)
 		os.Exit(1)
@@ -38,6 +51,7 @@ func TestMain(m *testing.M) {
 	if err := pg.Stop(); err != nil {
 		fmt.Fprintf(os.Stderr, "embedded-postgres stop: %v\n", err)
 	}
+	_ = os.RemoveAll(rt)
 	os.Exit(code)
 }
 
@@ -72,7 +86,7 @@ func rawPool(t *testing.T) *pgxpool.Pool {
 func truncateAll(t *testing.T, p *pgxpool.Pool) {
 	t.Helper()
 	_, err := p.Exec(context.Background(),
-		`TRUNCATE summary_actions, sink_deliveries, summaries, transcripts, videos, users CASCADE`)
+		`TRUNCATE login_events, summary_actions, sink_deliveries, summaries, transcripts, videos, users CASCADE`)
 	require.NoError(t, err)
 }
 
@@ -207,13 +221,15 @@ func TestListChannelFilter(t *testing.T) {
 	resetDB(t, p)
 	require.NoError(t, deliver(ctx, app, videoX, "body x"))
 	seedVideo(t, p, videoX, "X Title", "https://x", time.Time{})
+	_, err := p.Exec(ctx, `UPDATE videos SET channel_title = 'Acme Channel' WHERE id = $1`, videoX)
+	require.NoError(t, err)
 
-	// Channel is "youtube" for seeded rows; a non-matching filter hides them.
-	rec := do(t, app, httptest.NewRequest(http.MethodGet, "/?channel=vimeo", nil))
+	// Selecting a different channel hides the row; selecting its channel shows it.
+	rec := do(t, app, httptest.NewRequest(http.MethodGet, "/?channel=Other+Channel", nil))
 	require.Equal(t, http.StatusOK, rec.Code)
 	require.NotContains(t, body(t, rec), "X Title")
 
-	rec = do(t, app, httptest.NewRequest(http.MethodGet, "/?channel=youtube", nil))
+	rec = do(t, app, httptest.NewRequest(http.MethodGet, "/?channel=Acme+Channel", nil))
 	require.Contains(t, body(t, rec), "X Title")
 }
 
@@ -234,6 +250,18 @@ func TestDetailRendersHighlightsAndTakeaways(t *testing.T) {
 	require.Contains(t, html, "takeaway one")
 	require.Contains(t, html, `id="action-buttons"`, "action button group present")
 	require.Contains(t, html, "Watched")
+	require.Contains(t, html, `class="segmented"`, "watched/skipped render as a segmented control (UX review C5)")
+	require.Less(t, strings.Index(html, "Skipped"), strings.Index(html, "Saved"),
+		"Saved sits after the watched/skipped segment")
+	require.Contains(t, html, "← Summaries", "back link to the list (UX review C3)")
+
+	// The detail page leads with the attention-saving payload (UX review A8):
+	// Takeaways ("is it worth my time?") above Highlights above the full Summary.
+	takeaways := strings.Index(html, "takeaway one")
+	highlights := strings.Index(html, "highlight one")
+	summary := strings.Index(html, "the full summary body")
+	require.Less(t, takeaways, highlights, "Takeaways render before Highlights")
+	require.Less(t, highlights, summary, "Highlights render before the full Summary")
 }
 
 func TestDetailNotFound(t *testing.T) {
@@ -310,6 +338,64 @@ func TestListShowsSummarizeButtonForUnsummarized(t *testing.T) {
 	require.NotContains(t, html, "Queued", "not queued yet")
 }
 
+// TestListCollapsesOlderAndNoCaption verifies the feed IA (UX review B3/B4):
+// summarized + recent un-summarized cards lead inline; older un-summarized
+// videos collapse into a single disclosure; caption-less videos collapse into a
+// one-line count instead of dead cards.
+func TestListCollapsesOlderAndNoCaption(t *testing.T) {
+	ctx := context.Background()
+	app := newApp(t)
+	now := time.Date(2026, 6, 8, 12, 0, 0, 0, time.UTC)
+	app.RecencyWindow = 7 * 24 * time.Hour
+	app.Now = func() time.Time { return now }
+	p := rawPool(t)
+	resetDB(t, p)
+
+	const (
+		vRecent = "cccccccc-cccc-cccc-cccc-cccccccccccc" // 2d old, unsummarized → inline
+		vOld    = "dddddddd-dddd-dddd-dddd-dddddddddddd" // 30d old, unsummarized → disclosure
+		vNoCap  = "eeeeeeee-eeee-eeee-eeee-eeeeeeeeeeee" // caption-less → collapsed line
+	)
+	require.NoError(t, deliver(ctx, app, videoX, "body x")) // summarized, recent
+	seedVideo(t, p, videoX, "Summarized X", "https://x", now.Add(-24*time.Hour))
+	seedVideo(t, p, vRecent, "Recent Pending", "https://r", now.Add(-2*24*time.Hour))
+	seedVideo(t, p, vOld, "Old Pending", "https://o", now.Add(-30*24*time.Hour))
+	seedVideo(t, p, vNoCap, "No Caption Vid", "https://n", now.Add(-40*24*time.Hour))
+	_, err := p.Exec(ctx, `UPDATE videos SET transcript_status = 'none' WHERE id = $1`, vNoCap)
+	require.NoError(t, err)
+
+	rec := do(t, app, httptest.NewRequest(http.MethodGet, "/", nil))
+	require.Equal(t, http.StatusOK, rec.Code)
+	html := body(t, rec)
+
+	disclosure := strings.Index(html, "Show 1 older videos")
+	require.GreaterOrEqual(t, disclosure, 0, "older-videos disclosure present")
+	// Summarized + recent un-summarized lead inline, above the disclosure.
+	require.Less(t, strings.Index(html, "Summarized X"), disclosure, "summarized card is inline")
+	require.Less(t, strings.Index(html, "Recent Pending"), disclosure, "recent pending is inline")
+	// The older video is hidden inside the disclosure, after its summary.
+	require.Greater(t, strings.Index(html, "Old Pending"), disclosure, "older video lives in the disclosure")
+	// Caption-less video is a one-line count, never a card.
+	require.Contains(t, html, "have no captions")
+	require.NotContains(t, html, "No Caption Vid", "caption-less video is collapsed, not a card")
+}
+
+// TestListHidesFilterBarWhenEmpty: a genuinely empty list shows no filter bar
+// (the connect CTA stands alone), but a filter that matches nothing still shows
+// the bar so it can be cleared (UX review C1).
+func TestListHidesFilterBarWhenEmpty(t *testing.T) {
+	app := newApp(t)
+	resetDB(t, rawPool(t))
+
+	rec := do(t, app, httptest.NewRequest(http.MethodGet, "/", nil))
+	require.Equal(t, http.StatusOK, rec.Code)
+	require.NotContains(t, body(t, rec), `class="filters"`, "no filter bar on an empty account")
+
+	rec = do(t, app, httptest.NewRequest(http.MethodGet, "/?channel=nope", nil))
+	require.Equal(t, http.StatusOK, rec.Code)
+	require.Contains(t, body(t, rec), `class="filters"`, "filtered-to-empty keeps the bar so it can be cleared")
+}
+
 func TestRequestSummarizeQueuesAndRendersCard(t *testing.T) {
 	ctx := context.Background()
 	app := newApp(t)
@@ -357,27 +443,28 @@ func TestSummarizeModeToggle(t *testing.T) {
 	app := newApp(t)
 	resetDB(t, rawPool(t))
 
-	// Account page defaults to manual.
+	// Account page defaults to automatic (ADR-018: onboarded users get
+	// zero-friction discovery — the list fills and summarizes itself).
 	rec := do(t, app, httptest.NewRequest(http.MethodGet, "/account", nil))
 	require.Equal(t, http.StatusOK, rec.Code)
 	html := body(t, rec)
-	require.Contains(t, html, "Manual", "default mode shown")
-	require.Contains(t, html, "Switch to automatic")
+	require.Contains(t, html, "Automatic", "default mode shown")
+	require.Contains(t, html, "Switch to manual")
 
-	// Toggle to automatic via HTMX returns the refreshed control.
+	// Toggle to manual via HTMX returns the refreshed control.
 	req := httptest.NewRequest(http.MethodPost, "/account/summarize-mode",
-		strings.NewReader("enabled=true"))
+		strings.NewReader("enabled=false"))
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 	req.Header.Set("HX-Request", "true")
 	rec = do(t, app, req)
 	require.Equal(t, http.StatusOK, rec.Code)
 	html = body(t, rec)
-	require.Contains(t, html, "Automatic")
-	require.Contains(t, html, "Switch to manual")
+	require.Contains(t, html, "Manual")
+	require.Contains(t, html, "Switch to automatic")
 
 	got, err := app.Store.GetAutoSummarize(ctx, userID)
 	require.NoError(t, err)
-	require.True(t, got, "mode persisted")
+	require.False(t, got, "mode persisted")
 }
 
 func postSummarize(t *testing.T, app *web.App, videoID string, htmx bool) *httptest.ResponseRecorder {
@@ -404,3 +491,36 @@ func postAction(t *testing.T, app *web.App, videoID, action string, htmx bool) *
 	}
 	return do(t, app, req)
 }
+
+// TestListManualModeBannerCopy: a manual-mode user with un-summarized videos
+// sees the manual prompt (click Summarize), NOT the "summaries land
+// automatically" copy that misled the first pilot user into waiting forever.
+func TestListManualModeBannerCopy(t *testing.T) {
+	ctx := context.Background()
+	app := newApp(t)
+	p := rawPool(t)
+	resetDB(t, p)
+	seedVideo(t, p, videoX, "X Title", "https://x", time.Time{}) // pending, un-summarized
+	require.NoError(t, app.Store.SetAutoSummarize(ctx, userID, false))
+
+	html := body(t, do(t, app, httptest.NewRequest(http.MethodGet, "/", nil)))
+	require.Contains(t, html, "Manual mode")
+	require.Contains(t, html, "are not summarized automatically")
+	require.NotContains(t, html, "land gradually",
+		"manual-mode user must not be told summaries arrive automatically")
+}
+
+// TestListAutoModeBannerCopy: an auto-mode user with a backlog sees the
+// gradual-delivery copy, not the manual prompt.
+func TestListAutoModeBannerCopy(t *testing.T) {
+	ctx := context.Background()
+	app := newApp(t)
+	p := rawPool(t)
+	resetDB(t, p)
+	seedVideo(t, p, videoX, "X Title", "https://x", time.Time{})
+	require.NoError(t, app.Store.SetAutoSummarize(ctx, userID, true))
+
+	html := body(t, do(t, app, httptest.NewRequest(http.MethodGet, "/", nil)))
+	require.Contains(t, html, "land gradually")
+	require.NotContains(t, html, "are not summarized automatically")
+}

internal/web/paste.go

@@ -0,0 +1,62 @@
+package web
+
+import (
+	"fmt"
+	"net/url"
+	"regexp"
+	"strings"
+)
+
+// youtubeVideoID matches a canonical YouTube video id: exactly 11 URL-safe chars.
+var youtubeVideoID = regexp.MustCompile(`^[A-Za-z0-9_-]{11}$`)
+
+// parseYouTubeVideoID extracts the 11-character video id from a pasted YouTube
+// URL (watch?v=, youtu.be/, shorts/, embed/) or a bare id. It rejects non-YouTube
+// hosts and anything that doesn't yield a valid id, so the paste flow never tries
+// to fetch a video that can't exist (Feature 2).
+func parseYouTubeVideoID(raw string) (string, error) {
+	s := strings.TrimSpace(raw)
+	if s == "" {
+		return "", fmt.Errorf("empty input")
+	}
+
+	// Bare id (no URL) — accept directly.
+	if youtubeVideoID.MatchString(s) {
+		return s, nil
+	}
+
+	// Accept scheme-less URLs (youtube.com/watch?v=...) by giving url.Parse a host.
+	if !strings.Contains(s, "://") {
+		s = "https://" + s
+	}
+	u, err := url.Parse(s)
+	if err != nil {
+		return "", fmt.Errorf("not a URL: %w", err)
+	}
+
+	host := strings.ToLower(u.Hostname())
+	isYouTube := host == "youtu.be" || host == "youtube.com" || strings.HasSuffix(host, ".youtube.com")
+	if !isYouTube {
+		return "", fmt.Errorf("not a YouTube URL: %q", host)
+	}
+
+	var id string
+	switch {
+	case host == "youtu.be":
+		// youtu.be/<id>
+		id = strings.Trim(u.Path, "/")
+	case u.Path == "/watch":
+		id = u.Query().Get("v")
+	default:
+		// /shorts/<id>, /embed/<id>
+		parts := strings.Split(strings.Trim(u.Path, "/"), "/")
+		if len(parts) == 2 && (parts[0] == "shorts" || parts[0] == "embed") {
+			id = parts[1]
+		}
+	}
+
+	if !youtubeVideoID.MatchString(id) {
+		return "", fmt.Errorf("no YouTube video id in %q", raw)
+	}
+	return id, nil
+}

internal/web/paste_handler_test.go

@@ -0,0 +1,134 @@
+package web_test
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	"gitea.d-ma.be/mathias/tapir/internal/domain"
+)
+
+// fakeFetcher is a web.VideoFetcher returning a fixed video (or an error),
+// scoped to whatever (userID, videoID) the handler asks for.
+type fakeFetcher struct {
+	title string
+	err   error
+	calls int
+}
+
+func (f *fakeFetcher) FetchVideo(_ context.Context, userID, videoID string) (domain.Video, error) {
+	f.calls++
+	if f.err != nil {
+		return domain.Video{}, f.err
+	}
+	return domain.Video{
+		UserID:          userID,
+		Provider:        domain.ProviderYouTube,
+		ProviderVideoID: videoID,
+		Title:           f.title,
+		URL:             "https://www.youtube.com/watch?v=" + videoID,
+	}, nil
+}
+
+func pasteReq(rawURL string) *http.Request {
+	req := httptest.NewRequest(http.MethodPost, "/paste",
+		strings.NewReader("url="+url.QueryEscape(rawURL)))
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	return req
+}
+
+func TestPasteValidURLAddsAndRequests(t *testing.T) {
+	ctx := context.Background()
+	app := newApp(t)
+	resetDB(t, rawPool(t))
+	app.Fetcher = &fakeFetcher{title: "Pasted Talk"}
+	p := rawPool(t)
+
+	rec := do(t, app, pasteReq("https://youtu.be/dQw4w9WgXcQ"))
+	require.Equal(t, http.StatusOK, rec.Code)
+
+	var (
+		count, requested int
+		title            string
+	)
+	require.NoError(t, p.QueryRow(ctx,
+		`SELECT count(*), coalesce(max(title),'') FROM videos
+		  WHERE user_id=$1 AND provider_video_id='dQw4w9WgXcQ'`, userID).Scan(&count, &title))
+	require.Equal(t, 1, count, "pasted video added once, scoped to the user")
+	require.Equal(t, "Pasted Talk", title)
+
+	require.NoError(t, p.QueryRow(ctx,
+		`SELECT count(*) FROM videos
+		  WHERE user_id=$1 AND provider_video_id='dQw4w9WgXcQ' AND summarize_requested`,
+		userID).Scan(&requested))
+	require.Equal(t, 1, requested, "pasted video is queued for summarization (through the gate)")
+}
+
+func TestPasteInvalidURLRejected(t *testing.T) {
+	app := newApp(t)
+	resetDB(t, rawPool(t))
+	app.Fetcher = &fakeFetcher{title: "x"}
+
+	rec := do(t, app, pasteReq("definitely not a url"))
+	require.Equal(t, http.StatusBadRequest, rec.Code)
+
+	var count int
+	require.NoError(t, rawPool(t).QueryRow(context.Background(),
+		`SELECT count(*) FROM videos WHERE user_id=$1`, userID).Scan(&count))
+	require.Equal(t, 0, count, "invalid input adds nothing")
+}
+
+func TestPasteVideoNotFound(t *testing.T) {
+	app := newApp(t)
+	resetDB(t, rawPool(t))
+	app.Fetcher = &fakeFetcher{err: domain.ErrVideoNotFound}
+
+	rec := do(t, app, pasteReq("https://youtu.be/dQw4w9WgXcQ"))
+	require.Equal(t, http.StatusNotFound, rec.Code)
+
+	var count int
+	require.NoError(t, rawPool(t).QueryRow(context.Background(),
+		`SELECT count(*) FROM videos WHERE user_id=$1`, userID).Scan(&count))
+	require.Equal(t, 0, count, "a not-found video adds nothing")
+}
+
+func TestPasteDedupNoDuplicate(t *testing.T) {
+	app := newApp(t)
+	resetDB(t, rawPool(t))
+	app.Fetcher = &fakeFetcher{title: "Pasted Talk"}
+
+	require.Equal(t, http.StatusOK, do(t, app, pasteReq("https://youtu.be/dQw4w9WgXcQ")).Code)
+	require.Equal(t, http.StatusOK, do(t, app, pasteReq("https://www.youtube.com/watch?v=dQw4w9WgXcQ")).Code)
+
+	var count int
+	require.NoError(t, rawPool(t).QueryRow(context.Background(),
+		`SELECT count(*) FROM videos WHERE user_id=$1 AND provider_video_id='dQw4w9WgXcQ'`,
+		userID).Scan(&count))
+	require.Equal(t, 1, count, "pasting the same video twice must not duplicate the row")
+}
+
+func TestListShowsPasteFormForConnectedUserWithVideos(t *testing.T) {
+	app := newApp(t)
+	resetDB(t, rawPool(t))
+	app.Fetcher = &fakeFetcher{title: "x"}
+	p := rawPool(t)
+
+	// Connected user with a non-empty feed (the case the bug missed: hasConnected
+	// was only computed for an empty feed).
+	_, err := p.Exec(context.Background(),
+		`INSERT INTO video_connections (user_id, provider, token_ref, status)
+		 VALUES ($1, 'youtube', 'youtube/x/refresh_token', 'active')`, userID)
+	require.NoError(t, err)
+	seedVideo(t, p, "11111111-1111-1111-1111-111111111111", "A talk", "https://youtu.be/aaaaaaaaaaa", time.Now())
+
+	rec := do(t, app, httptest.NewRequest(http.MethodGet, "/", nil))
+	require.Equal(t, http.StatusOK, rec.Code)
+	require.Contains(t, body(t, rec), `action="/paste"`,
+		"a connected user must see the paste box even when the feed has videos")
+}

internal/web/paste_test.go

@@ -0,0 +1,97 @@
+package web
+
+import (
+	"bytes"
+	"context"
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
+	"strings"
+	"testing"
+)
+
+func TestParseYouTubeVideoID(t *testing.T) {
+	const id = "dQw4w9WgXcQ"
+	ok := []struct {
+		name, in string
+	}{
+		{"watch", "https://www.youtube.com/watch?v=" + id},
+		{"watch no www", "https://youtube.com/watch?v=" + id},
+		{"watch m", "https://m.youtube.com/watch?v=" + id},
+		{"watch extra params", "https://www.youtube.com/watch?v=" + id + "&t=42s&list=PLxyz"},
+		{"watch param after", "https://www.youtube.com/watch?list=PLxyz&v=" + id},
+		{"short link", "https://youtu.be/" + id},
+		{"short link param", "https://youtu.be/" + id + "?si=abcd&t=1"},
+		{"shorts", "https://www.youtube.com/shorts/" + id},
+		{"embed", "https://www.youtube.com/embed/" + id},
+		{"bare id", id},
+		{"http scheme", "http://youtube.com/watch?v=" + id},
+		{"no scheme", "youtube.com/watch?v=" + id},
+		{"trailing space", "  https://youtu.be/" + id + "  "},
+	}
+	for _, c := range ok {
+		t.Run(c.name, func(t *testing.T) {
+			got, err := parseYouTubeVideoID(c.in)
+			if err != nil {
+				t.Fatalf("parseYouTubeVideoID(%q) error: %v", c.in, err)
+			}
+			if got != id {
+				t.Fatalf("parseYouTubeVideoID(%q) = %q, want %q", c.in, got, id)
+			}
+		})
+	}
+
+	bad := []struct {
+		name, in string
+	}{
+		{"empty", ""},
+		{"blank", "   "},
+		{"vimeo", "https://vimeo.com/123456789"},
+		{"other host", "https://example.com/watch?v=" + id},
+		{"watch no id", "https://www.youtube.com/watch?v="},
+		{"short id", "https://youtu.be/abc"},
+		{"long id", "https://youtu.be/" + id + "extra"},
+		{"bad chars", "https://youtu.be/dQw4w9Wg!cQ"},
+		{"not a url", "just some text"},
+		{"channel url", "https://www.youtube.com/@somechannel"},
+	}
+	for _, c := range bad {
+		t.Run("reject "+c.name, func(t *testing.T) {
+			if got, err := parseYouTubeVideoID(c.in); err == nil {
+				t.Fatalf("parseYouTubeVideoID(%q) = %q, want error", c.in, got)
+			}
+		})
+	}
+}
+
+func TestListPageShowsPasteFormOnlyWhenConnected(t *testing.T) {
+	render := func(connected bool) string {
+		var buf bytes.Buffer
+		if err := ListPage(listBuckets{}, Filter{}, PipelineStats{}, "", connected, nil, true).Render(context.Background(), &buf); err != nil {
+			t.Fatalf("render: %v", err)
+		}
+		return buf.String()
+	}
+
+	html := render(true)
+	if !strings.Contains(html, `name="url"`) || !strings.Contains(html, `action="/paste"`) {
+		t.Errorf("connected feed must show the paste form")
+	}
+	if strings.Contains(render(false), `name="url"`) {
+		t.Errorf("disconnected feed must not show the paste form")
+	}
+}
+
+func TestFilterMatchesMultipleChannels(t *testing.T) {
+	f := Filter{Channels: []string{"Acme", "Zeta"}}
+	row := func(ch string) store.SummaryRow { return store.SummaryRow{ChannelTitle: ch, Summarized: true} }
+
+	rows := []store.SummaryRow{row("Acme"), row("Beta"), row("Zeta")}
+	got := f.apply(rows)
+	if len(got) != 2 || got[0].ChannelTitle != "Acme" || got[1].ChannelTitle != "Zeta" {
+		t.Fatalf("multi-channel filter = %+v, want Acme+Zeta only", got)
+	}
+
+	// Empty selection = no channel constraint (all pass).
+	if n := len(Filter{}.apply(rows)); n != 3 {
+		t.Fatalf("no channel filter should pass all rows, got %d", n)
+	}
+}

internal/web/processing.go

@@ -3,6 +3,8 @@ package web
 import (
 	"context"
 	"sync"
+
+	"gitea.d-ma.be/mathias/tapir/internal/domain"
 )
 
 // Processor runs the core summarization use case for a single already-discovered
@@ -14,6 +16,14 @@ type Processor interface {
 	ProcessVideo(ctx context.Context, userID, videoID string) error
 }
 
+// VideoFetcher resolves an arbitrary YouTube video id to its metadata for the
+// paste-a-URL flow (Feature 2). It is a Data API call, NOT the rate-limited
+// caption path. Returns domain.ErrVideoNotFound for a deleted/private/typo'd id.
+// cmd/tapir wires a per-user YouTube adapter; nil disables the paste route.
+type VideoFetcher interface {
+	FetchVideo(ctx context.Context, userID, videoID string) (domain.Video, error)
+}
+
 // ProcessingSet tracks the (user, video) ids currently being summarized in-process
 // so the status endpoint can show the animation until the summary lands. It is
 // ephemeral (single-instance Stage-1): a restart drops it, and the DB holds the

internal/web/processing_handler_test.go

@@ -7,6 +7,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/jackc/pgx/v5/pgxpool"
 	"github.com/stretchr/testify/require"
 
 	"gitea.d-ma.be/mathias/tapir/internal/web"
@@ -129,3 +130,42 @@ func getStatus(t *testing.T, app *web.App, videoID string) *httptest.ResponseRec
 	app.Router().ServeHTTP(rec, req)
 	return rec
 }
+
+// setTranscriptStatus stamps videos.transcript_status directly (bypassing RLS via
+// the super pool) so a test can drive the status endpoint into a given state.
+func setTranscriptStatus(t *testing.T, p *pgxpool.Pool, videoID, status string) {
+	t.Helper()
+	_, err := p.Exec(context.Background(),
+		`UPDATE videos SET transcript_status = $2 WHERE id = $1`, videoID, status)
+	require.NoError(t, err)
+}
+
+// TestStatusRateLimitedShowsWaitingCard: a click that hit YouTube's rate limit
+// must surface the honest "waiting, will retry" card that keeps polling — not a
+// silent revert to the Summarize button.
+func TestStatusRateLimitedShowsWaitingCard(t *testing.T) {
+	app := newApp(t)
+	p := rawPool(t)
+	resetDB(t, p)
+	seedVideo(t, p, videoX, "Throttled Title", "https://x", time.Time{})
+	setTranscriptStatus(t, p, videoX, "rate_limited")
+
+	html := body(t, getStatus(t, app, videoX))
+	require.Contains(t, html, "Waiting on YouTube rate limits", "honest rate-limit copy")
+	require.Contains(t, html, `hx-trigger="every 30s"`, "waiting card keeps polling so it self-resolves")
+	require.NotContains(t, html, "Summarize this video", "must not revert to the Summarize button")
+}
+
+// TestStatusNoCaptionsTerminal: a no-captions outcome is terminal — an honest
+// message, no poll, no button to click back into the same dead end.
+func TestStatusNoCaptionsTerminal(t *testing.T) {
+	app := newApp(t)
+	p := rawPool(t)
+	resetDB(t, p)
+	seedVideo(t, p, videoX, "Silent Title", "https://x", time.Time{})
+	setTranscriptStatus(t, p, videoX, "none")
+
+	html := body(t, getStatus(t, app, videoX))
+	require.Contains(t, html, "No captions available", "honest terminal copy")
+	require.NotContains(t, html, "hx-trigger", "terminal card must stop polling")
+}

internal/web/register_test.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/jackc/pgx/v5/pgxpool"
 	"github.com/stretchr/testify/require"
 )
 
@@ -45,7 +46,7 @@ func TestRegisterCreatesExactlyOneUserAndIdentity(t *testing.T) {
 	truncateAll(t, p)
 
 	req := httptest.NewRequest(http.MethodPost, "/register",
-		strings.NewReader("display_name=Newbie&accept_terms=yes"))
+		strings.NewReader("display_name=Newbie"))
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 	rec := do(t, app, req)
 	require.Equal(t, http.StatusSeeOther, rec.Code)
@@ -74,12 +75,54 @@ func TestRegisterCreatesExactlyOneUserAndIdentity(t *testing.T) {
 	require.Equal(t, 1, totalIdents)
 }
 
+// loginEventCount counts login_events for the stub user via the raw pool.
+func loginEventCount(t *testing.T, p *pgxpool.Pool) int {
+	t.Helper()
+	var n int
+	require.NoError(t, p.QueryRow(context.Background(),
+		`SELECT count(*) FROM login_events WHERE user_id = $1`, userID).Scan(&n))
+	return n
+}
+
+// TestGateStampsLoginEventThrottled: a gated request for a registered user stamps
+// exactly one login event, and a same-day repeat is throttled to no new row — the
+// read-side Stage-0 signal flowing from the registration gate.
+func TestGateStampsLoginEventThrottled(t *testing.T) {
+	app := newApp(t) // stubSubject → userID
+	p := rawPool(t)
+	resetDB(t, p)
+	require.Equal(t, 0, loginEventCount(t, p))
+
+	rec := do(t, app, httptest.NewRequest(http.MethodGet, "/", nil))
+	require.Equal(t, http.StatusOK, rec.Code)
+	require.Equal(t, 1, loginEventCount(t, p), "a gated request must stamp one login event")
+
+	do(t, app, httptest.NewRequest(http.MethodGet, "/", nil))
+	require.Equal(t, 1, loginEventCount(t, p), "a same-day repeat must not stamp again")
+}
+
+// TestUnregisteredSubjectIsNotStamped: a subject with no tapir user is redirected
+// to /register and never reaches the stamp (no user_id to attribute it to).
+func TestUnregisteredSubjectIsNotStamped(t *testing.T) {
+	app := newAppAs(t, "unregistered-sub")
+	p := rawPool(t)
+	truncateAll(t, p)
+
+	rec := do(t, app, httptest.NewRequest(http.MethodGet, "/", nil))
+	require.Equal(t, http.StatusFound, rec.Code)
+
+	var n int
+	require.NoError(t, p.QueryRow(context.Background(),
+		`SELECT count(*) FROM login_events`).Scan(&n))
+	require.Equal(t, 0, n, "an unregistered subject must not stamp a login event")
+}
+
 func TestRegisterRejectsMissingFields(t *testing.T) {
 	app := newAppAs(t, "incomplete-subject")
 	truncateAll(t, rawPool(t))
 
 	req := httptest.NewRequest(http.MethodPost, "/register",
-		strings.NewReader("display_name=&accept_terms=")) // both missing
+		strings.NewReader("display_name=")) // missing display name
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 	rec := do(t, app, req)
 	require.Equal(t, http.StatusBadRequest, rec.Code)

internal/web/registration.go

@@ -64,6 +64,13 @@ func (a *App) registrationGate(h http.Handler) http.Handler {
 			http.Redirect(w, r, registerPath, http.StatusFound)
 			return
 		}
+		// Stamp the read-side usage signal (Stage-0 gate, ADR-016): the store
+		// throttles this to one row per user per day, so a stamp on every gated
+		// request is cheap. Best-effort — a stamp failure must never break the
+		// request the user actually came for, so it is logged and swallowed.
+		if err := a.Store.StampLogin(r.Context(), userID); err != nil {
+			a.logger().Warn("stamp login event", "user", userID, "err", err)
+		}
 		h.ServeHTTP(w, r.WithContext(withUserID(r.Context(), userID)))
 	})
 }
@@ -108,10 +115,9 @@ func (a *App) handleRegister(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	displayName := strings.TrimSpace(r.FormValue("display_name"))
-	accepted := r.FormValue("accept_terms") != ""
-	if displayName == "" || !accepted {
+	if displayName == "" {
 		a.renderStatus(w, r, http.StatusBadRequest,
-			RegisterPage(user.Email, "Enter a display name and accept the terms to continue."))
+			RegisterPage(user.Email, "Enter a display name to continue."))
 		return
 	}
 

internal/web/videocard_internal_test.go

@@ -17,9 +17,75 @@ func renderVideoCard(t *testing.T, r store.SummaryRow) string {
 	return sb.String()
 }
 
-// A rate-limited, unsummarized video shows the passive "Retrying later" badge and
-// hides the Summarize button — the user can't fix it, retry is automatic.
-func TestVideoCard_RateLimitedShowsRetryingBadge(t *testing.T) {
+// noActionButton asserts the rendered HTML contains no form POST (no action URL
+// of the form /v/.../summarize or /v/.../retry-now) and no btn-quiet button.
+func noActionButton(t *testing.T, html, state string) {
+	t.Helper()
+	if strings.Contains(html, "/summarize") {
+		t.Errorf("state %q: expected no summarize URL, got:\n%s", state, html)
+	}
+	if strings.Contains(html, "/retry-now") {
+		t.Errorf("state %q: expected no retry-now URL, got:\n%s", state, html)
+	}
+	if strings.Contains(html, "btn-quiet") {
+		t.Errorf("state %q: expected no action button, got:\n%s", state, html)
+	}
+}
+
+// TestVideoCard_State1_Summarized — chip + no nudge button.
+func TestVideoCard_State1_Summarized(t *testing.T) {
+	html := renderVideoCard(t, store.SummaryRow{
+		VideoID:    "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa",
+		Title:      "Done Video",
+		Summarized: true,
+		Summary:    "A great talk about Go.",
+		AIProvider: "local",
+	})
+
+	if !strings.Contains(html, "local") {
+		t.Errorf("state 1: expected AI provider chip, got:\n%s", html)
+	}
+	noActionButton(t, html, "summarized")
+	if strings.Contains(html, "Summarize") {
+		t.Errorf("state 1: no nudge button on a summarized card, got:\n%s", html)
+	}
+}
+
+// TestVideoCard_State2_NoTranscript — terminal; muted status, NO button, NO POST URL.
+func TestVideoCard_State2_NoTranscript(t *testing.T) {
+	html := renderVideoCard(t, store.SummaryRow{
+		VideoID:          "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa",
+		Title:            "Silent Video",
+		Summarized:       false,
+		TranscriptStatus: "none",
+	})
+
+	if !strings.Contains(html, "No transcript available") {
+		t.Errorf("state 2: expected 'No transcript available' text, got:\n%s", html)
+	}
+	noActionButton(t, html, "none-transcript")
+	if strings.Contains(html, "Summarize") {
+		t.Errorf("state 2: no nudge button when there are no captions, got:\n%s", html)
+	}
+}
+
+// TestVideoCard_State3_Queued — "Queued" chip, no button.
+func TestVideoCard_State3_Queued(t *testing.T) {
+	html := renderVideoCard(t, store.SummaryRow{
+		VideoID:            "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa",
+		Title:              "Queued Video",
+		Summarized:         false,
+		SummarizeRequested: true,
+	})
+
+	if !strings.Contains(html, "Queued") {
+		t.Errorf("state 3: expected 'Queued' chip, got:\n%s", html)
+	}
+	noActionButton(t, html, "queued")
+}
+
+// TestVideoCard_State4_RateLimited — quiet status + "Summarize" → retry-now URL.
+func TestVideoCard_State4_RateLimited(t *testing.T) {
 	html := renderVideoCard(t, store.SummaryRow{
 		VideoID:          "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa",
 		Title:            "Throttled Video",
@@ -27,29 +93,66 @@ func TestVideoCard_RateLimitedShowsRetryingBadge(t *testing.T) {
 		TranscriptStatus: "rate_limited",
 	})
 
-	if !strings.Contains(html, "Retrying later") {
-		t.Errorf("expected a 'Retrying later' badge, got:\n%s", html)
+	if !strings.Contains(html, "In queue") {
+		t.Errorf("state 4: expected 'In queue' status text, got:\n%s", html)
 	}
-	if !strings.Contains(html, "chip-retry") {
-		t.Errorf("expected the passive chip-retry styling, got:\n%s", html)
+	if !strings.Contains(html, "Summarize") {
+		t.Errorf("state 4: expected 'Summarize' button, got:\n%s", html)
 	}
-	if strings.Contains(html, ">Summarize<") {
-		t.Errorf("the Summarize button must be hidden for a rate-limited video, got:\n%s", html)
+	if !strings.Contains(html, "retry-now") {
+		t.Errorf("state 4: expected retry-now URL in form action, got:\n%s", html)
+	}
+	if strings.Contains(html, "/summarize\"") {
+		t.Errorf("state 4: rate-limited card must not POST to /summarize, got:\n%s", html)
+	}
+	if strings.Contains(html, "Try now") {
+		t.Errorf("state 4: 'Try now' verb must not appear, got:\n%s", html)
 	}
 }
 
-// An ordinary unsummarized video still offers the Summarize button.
-func TestVideoCard_UnsummarizedShowsSummarize(t *testing.T) {
+// TestVideoCard_State5_Pending — quiet status + "Summarize" → summarize URL.
+func TestVideoCard_State5_Pending(t *testing.T) {
 	html := renderVideoCard(t, store.SummaryRow{
 		VideoID:    "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa",
 		Title:      "Fresh Video",
 		Summarized: false,
 	})
 
-	if !strings.Contains(html, ">Summarize<") {
-		t.Errorf("expected a Summarize button, got:\n%s", html)
+	if !strings.Contains(html, "Not summarized") {
+		t.Errorf("state 5: expected 'Not summarized' status text, got:\n%s", html)
 	}
-	if strings.Contains(html, "Retrying later") {
-		t.Errorf("no retry badge for a non-rate-limited video, got:\n%s", html)
+	if !strings.Contains(html, "Summarize") {
+		t.Errorf("state 5: expected 'Summarize' button, got:\n%s", html)
+	}
+	if !strings.Contains(html, "/summarize") {
+		t.Errorf("state 5: expected summarize URL in form action, got:\n%s", html)
+	}
+	if strings.Contains(html, "retry-now") {
+		t.Errorf("state 5: pending card must not POST to /retry-now, got:\n%s", html)
+	}
+	if strings.Contains(html, "Try now") {
+		t.Errorf("state 5: 'Try now' verb must not appear, got:\n%s", html)
+	}
+}
+
+// TestVideoCard_ForbiddenCopyAbsent — the over-promising / jargon phrases the
+// honesty pass removed must not reappear in any rendered card state (UX review
+// A3/A4/A6): "Try now", "Summarize now", "Fetching soon", "the next run".
+func TestVideoCard_ForbiddenCopyAbsent(t *testing.T) {
+	forbidden := []string{"Try now", "Summarize now", "Fetching soon", "the next run"}
+	cases := []store.SummaryRow{
+		{VideoID: "a", Summarized: true, Summary: "s", AIProvider: "local"},
+		{VideoID: "b", TranscriptStatus: "none"},
+		{VideoID: "c", SummarizeRequested: true},
+		{VideoID: "d", TranscriptStatus: "rate_limited"},
+		{VideoID: "e"},
+	}
+	for _, r := range cases {
+		html := renderVideoCard(t, r)
+		for _, phrase := range forbidden {
+			if strings.Contains(html, phrase) {
+				t.Errorf("forbidden copy %q reappeared in card %q:\n%s", phrase, r.VideoID, html)
+			}
+		}
 	}
 }

internal/web/view.go

@@ -2,6 +2,7 @@ package web
 
 import (
 	"regexp"
+	"slices"
 	"strings"
 	"time"
 	"unicode/utf8"
@@ -333,7 +334,7 @@ type flashView struct {
 // flashMessages maps each flash code to its banner. An unknown code renders no
 // banner (flashFor returns ok=false), so a forged cookie value is inert.
 var flashMessages = map[string]flashView{
-	flashConnected:     {"success", "YouTube account connected."},
+	flashConnected:     {"success", "YouTube account connected — finding your subscriptions. Your newest videos will appear below as they're summarized."},
 	flashConnectFailed: {"error", "Could not connect your YouTube account. Please try again."},
 	flashDisconnected:  {"success", "Account disconnected."},
 	flashDeleted:       {"success", "Your account and all its data were deleted."},
@@ -382,13 +383,126 @@ func disconnectURL(provider string) templ.SafeURL {
 	return templ.SafeURL("/account/disconnect/" + provider)
 }
 
+// PipelineStats summarises the user's video backlog so the list page can show
+// a one-line status bar ("2 summaries · 256 fetching soon · 12 no captions").
+type PipelineStats struct {
+	Summarized  int
+	RateLimited int // in the backoff window, will be retried
+	NoText      int // no caption track available
+	Pending     int // discovered but not yet attempted
+}
+
+// pipelineStats computes a PipelineStats from all (unfiltered) rows.
+func pipelineStats(rows []store.SummaryRow) PipelineStats {
+	var s PipelineStats
+	for _, r := range rows {
+		switch {
+		case r.Summarized:
+			s.Summarized++
+		case r.TranscriptStatus == "rate_limited":
+			s.RateLimited++
+		case r.TranscriptStatus == "none":
+			s.NoText++
+		default:
+			s.Pending++
+		}
+	}
+	return s
+}
+
+// retryNowURL builds the POST path for manual retry of a rate-limited video.
+func retryNowURL(videoID string) templ.SafeURL {
+	return templ.SafeURL("/v/" + videoID + "/retry-now")
+}
+
+// listBuckets splits the (already filtered) video list into what the list view
+// shows where, so the readable summaries are not buried under the un-summarized
+// back-catalogue (UX review B3/B4). It is one feed with a noise-collapse, not
+// separate sections:
+//   - Main: summarized videos + recent un-summarized ones — shown inline as cards.
+//   - Older: un-summarized videos published before the recency cutoff — collapsed
+//     behind a single "Show N older videos" disclosure (they will not auto-fill;
+//     they are summarize-on-demand).
+//   - NoCaption: count of un-summarized videos with no caption track — collapsed
+//     to one honest line instead of N dead terminal cards.
+type listBuckets struct {
+	Main      []store.SummaryRow
+	Older     []store.SummaryRow
+	NoCaption int
+}
+
+// bucketRows classifies rows into the list buckets given a recency cutoff. A zero
+// cutoff (recency collapse disabled) leaves Older empty — every un-summarized,
+// captioned video stays inline. Order within each bucket is preserved.
+func bucketRows(rows []store.SummaryRow, cutoff time.Time) listBuckets {
+	var b listBuckets
+	for _, r := range rows {
+		switch {
+		case r.Summarized:
+			b.Main = append(b.Main, r)
+		case r.TranscriptStatus == "none":
+			b.NoCaption++
+		case isOlder(r, cutoff):
+			b.Older = append(b.Older, r)
+		default:
+			b.Main = append(b.Main, r)
+		}
+	}
+	return b
+}
+
+// isOlder reports whether an un-summarized row falls before the recency cutoff.
+// A zero cutoff (window disabled) or an undated row is never "older" — it cannot
+// be aged out, so it stays inline rather than being hidden in the disclosure.
+func isOlder(r store.SummaryRow, cutoff time.Time) bool {
+	if cutoff.IsZero() || r.PublishedAt.IsZero() {
+		return false
+	}
+	return r.PublishedAt.Before(cutoff)
+}
+
+// empty reports whether there is nothing to show at all (drives the empty state).
+func (b listBuckets) empty() bool {
+	return len(b.Main) == 0 && len(b.Older) == 0 && b.NoCaption == 0
+}
+
 // Filter holds the list-view query parameters. Empty fields mean "no constraint".
 // Dates are kept as the raw YYYY-MM-DD strings so the form re-renders the user's
 // input verbatim; parsing happens in matchFilter.
 type Filter struct {
-	Channel string
-	From    string
-	To      string
+	Channels       []string // selected channel titles; empty = all channels
+	From           string
+	To             string
+	OnlySummarized bool // show only videos that have a summary
+}
+
+// active reports whether any filter constraint is set. Drives whether the filter
+// bar is shown at all: on a genuinely empty account (no rows AND no active
+// filter) the bar is hidden so the connect CTA stands alone (UX review C1); a
+// filter that happens to match nothing still shows the bar so it can be cleared.
+func (f Filter) active() bool {
+	return len(f.Channels) > 0 || f.From != "" || f.To != "" || f.OnlySummarized
+}
+
+// HasChannel reports whether a channel is currently selected (drives the
+// multi-select's selected state in the view).
+func (f Filter) HasChannel(c string) bool {
+	return slices.Contains(f.Channels, c)
+}
+
+// nonEmptyStrings drops blank entries. A channel multi-select submits real
+// channel titles; this guards against a stray empty value reaching the filter.
+func nonEmptyStrings(ss []string) []string {
+	out := ss[:0:0]
+	for _, s := range ss {
+		if strings.TrimSpace(s) != "" {
+			out = append(out, s)
+		}
+	}
+	if len(out) == 0 {
+		return nil
+	}
+	return out
 }
 
 // matches reports whether a row satisfies the filter. Channel is an exact match;
@@ -396,7 +510,10 @@ type Filter struct {
 // (no constraint) — Stage-0 filtering is in-memory over the listed rows, not a
 // store query.
 func (f Filter) matches(r store.SummaryRow) bool {
-	if f.Channel != "" && r.Channel != f.Channel {
+	if f.OnlySummarized && !r.Summarized {
+		return false
+	}
+	if len(f.Channels) > 0 && !slices.Contains(f.Channels, r.ChannelTitle) {
 		return false
 	}
 	if from, ok := parseDate(f.From); ok {
@@ -426,7 +543,7 @@ func parseDate(s string) (time.Time, bool) {
 
 // apply returns the subset of rows matching the filter, preserving order.
 func (f Filter) apply(rows []store.SummaryRow) []store.SummaryRow {
-	if f == (Filter{}) {
+	if len(f.Channels) == 0 && f.From == "" && f.To == "" && !f.OnlySummarized {
 		return rows
 	}
 	out := rows[:0:0]
@@ -478,6 +595,8 @@ main { max-width: 60rem; margin: 0 auto; padding: var(--s4) var(--s3); }
 .filters label { display: flex; flex-direction: column; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); gap: var(--s1); }
 .filters input { font: inherit; padding: .4rem .55rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); color: var(--fg); min-width: 9rem; }
 .filters input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
+.filter-check { flex-direction: row !important; align-items: center; gap: var(--s2) !important; padding-bottom: .45rem; }
+.filter-check input[type=checkbox] { width: 1rem; height: 1rem; min-width: 0; padding: 0; accent-color: var(--accent); cursor: pointer; }
 .btn { font: inherit; font-weight: 600; padding: .45rem 1rem; border: 1px solid var(--accent); border-radius: var(--radius); background: var(--accent); color: var(--accent-fg); cursor: pointer; }
 /* anchors styled as buttons: the generic a{} / a:visited{} colour rules outrank
    .btn on <a>, painting the label accent-on-accent (invisible). Restore the
@@ -497,6 +616,23 @@ a.btn, a.btn:visited { color: var(--accent-fg); }
 /* passive "retrying later" chip: dim/grey (CharmDim), not the accent — it is a
    status, not an action the user can take. */
 .chip-retry { background: rgba(108, 108, 108, .16); color: #6c6c6c; }
+.pipeline-bar { display: flex; gap: var(--s3); align-items: center; flex-wrap: wrap; margin-bottom: var(--s3); font-size: .8rem; color: var(--muted); }
+.pipeline-bar span { display: flex; align-items: center; gap: var(--s1); }
+.pipeline-bar span + span::before { content: "·"; margin-right: var(--s1); }
+.pipeline-note { margin: calc(-1 * var(--s2)) 0 var(--s3); font-size: .8rem; line-height: 1.5; max-width: 40rem; }
+/* one-line count of caption-less videos (collapsed instead of N dead cards) */
+.list-note { margin: var(--s3) 0 0; font-size: .85rem; }
+/* older un-summarized back-catalogue, collapsed behind a disclosure so it does
+   not bury the readable summaries above it */
+.older-videos { margin-top: var(--s4); }
+.older-videos > summary { cursor: pointer; font-size: .85rem; font-weight: 600; color: var(--accent); padding: var(--s2) 0; list-style: revert; }
+.older-videos > summary:hover { text-decoration: underline; }
+.older-videos[open] > summary { margin-bottom: var(--s3); }
+.older-videos .cards { margin-top: 0; }
+.card-nudge-form { display: inline; }
+.btn-quiet { font: inherit; font-size: .72rem; font-weight: 600; padding: .15rem .55rem; border-radius: 999px; border: 1px solid var(--accent); background: transparent; color: var(--accent); cursor: pointer; }
+.btn-quiet:hover { background: var(--accent-weak); }
+.chip-warn { background: rgba(255, 110, 156, .15); color: #FF6E9C; }
 .card-state { color: var(--muted); font-size: .8rem; }
 .badge { display: inline-block; padding: .15rem .55rem; border-radius: 999px; background: var(--badge-bg); color: var(--badge-fg); font-size: .72rem; font-weight: 600; }
 
@@ -522,11 +658,30 @@ a.btn, a.btn:visited { color: var(--accent-fg); }
 .tapir-bar-fill { animation: tapir-fill 8s linear infinite; text-shadow: 0 0 6px rgba(14, 249, 182, .7); }
 @keyframes tapir-fill { 0% { clip-path: inset(0 100% 0 0); } 100% { clip-path: inset(0 0 0 0); } }
 .tapir-label { color: var(--muted); font-size: .9rem; margin: 0; }
+/* Cycling status verbs (Claude-Code / Crush style): five gerunds stacked, each
+   visible 1/5 of a 6s loop, cross-faded. The container reserves one line height
+   so the layout does not jump as verbs swap. */
+.tapir-verbs { position: relative; height: 1.3em; margin: .2em 0 0; color: var(--muted); font-size: .9rem; }
+.tapir-verbs span { position: absolute; left: 0; top: 0; white-space: nowrap; opacity: 0; animation: tapir-verb 6s steps(1, end) infinite; }
+.tapir-verbs .tv1 { animation-delay: 0s; }
+.tapir-verbs .tv2 { animation-delay: 1.2s; }
+.tapir-verbs .tv3 { animation-delay: 2.4s; }
+.tapir-verbs .tv4 { animation-delay: 3.6s; }
+.tapir-verbs .tv5 { animation-delay: 4.8s; }
+@keyframes tapir-verb { 0%, 19.99% { opacity: 1; } 20%, 100% { opacity: 0; } }
+/* Resting tapir for the rate-limit waiting state: the panel, one still frame, no
+   animation — calm, not busy, signalling "parked, not stuck". */
+.tapir-resting pre { position: relative; opacity: 1; animation: none; }
+.card-waiting { border-style: dashed; opacity: .92; }
+.card-no-captions .card-state { font-style: italic; }
+.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
 @media (prefers-reduced-motion: reduce) {
   .tapir-charm pre { animation: none; }
   .tapir-charm .tapir-f2, .tapir-charm .tapir-f3 { display: none; }
   .tapir-charm .tapir-f1 { opacity: 1; }
   .tapir-bar-fill { animation: none; clip-path: inset(0 35% 0 0); }
+  .tapir-verbs span { animation: none; }
+  .tapir-verbs .tv1 { opacity: 1; }
 }
 
 /* summarization mode toggle on the account page */
@@ -558,6 +713,7 @@ a.btn, a.btn:visited { color: var(--accent-fg); }
 
 /* detail reader */
 .detail { max-width: 38rem; }
+.detail .back { margin: 0 0 var(--s3); font-size: .85rem; }
 .detail h1 { font-size: 1.7rem; line-height: 1.25; margin: 0 0 var(--s2); }
 .detail .meta { color: var(--muted); font-size: .9rem; margin: 0 0 var(--s2); display: flex; gap: var(--s2); align-items: center; flex-wrap: wrap; }
 .detail .source { margin: 0 0 var(--s4); font-size: .9rem; }
@@ -569,8 +725,13 @@ a.btn, a.btn:visited { color: var(--accent-fg); }
 .detail ul { margin: 0; padding-left: 1.2rem; line-height: 1.6; }
 .detail li { margin-bottom: var(--s1); }
 
-/* action toggles */
-.actions { display: flex; gap: var(--s2); margin: var(--s4) 0; flex-wrap: wrap; }
+/* action toggles — watched|skipped form one segmented control (they are mutually
+   exclusive), "saved" sits apart as an independent toggle */
+.actions { display: flex; gap: var(--s3); margin: var(--s4) 0; flex-wrap: wrap; align-items: center; }
+.segmented { display: inline-flex; }
+.segmented .action { border-radius: 0; border-right-width: 0; }
+.segmented .action:first-child { border-top-left-radius: var(--radius); border-bottom-left-radius: var(--radius); }
+.segmented .action:last-child { border-top-right-radius: var(--radius); border-bottom-right-radius: var(--radius); border-right-width: 1px; }
 .actions .action { font: inherit; padding: .4rem .9rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); color: var(--fg); cursor: pointer; transition: border-color .15s, background .15s; }
 .actions .action:hover { border-color: var(--accent); }
 .actions .action:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
@@ -585,6 +746,11 @@ a.btn, a.btn:visited { color: var(--accent-fg); }
 .account-meta { display: grid; grid-template-columns: max-content 1fr; gap: var(--s1) var(--s3); margin: 0; }
 .account-meta dt { color: var(--muted); font-size: .85rem; }
 .account-meta dd { margin: 0; }
+.channel-errors { }
+.channel-error-list { list-style: none; margin: 0 0 var(--s3); padding: 0; display: grid; gap: var(--s1); }
+.channel-error-list li { display: flex; align-items: center; gap: var(--s2); }
+.channel-error-name { font-weight: 500; }
+.channel-error-since { font-size: .8rem; }
 .conn-list { list-style: none; margin: 0 0 var(--s3); padding: 0; display: grid; gap: var(--s2); }
 .conn { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: var(--s3); display: flex; flex-direction: column; gap: var(--s1); }
 .conn-main { display: flex; gap: var(--s2); align-items: center; flex-wrap: wrap; }

internal/web/views.templ

@@ -1,6 +1,7 @@
 package web
 
 import (
+	"fmt"
 	"strings"
 
 	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
@@ -31,12 +32,36 @@ templ Layout(title string) {
 	</html>
 }
 
+// PublicLayout is the shell for unauthenticated pages (/welcome, /invite).
+// Same structure as Layout but without the nav auth links — a visitor who is not
+// logged in should not see "Account" or "Log out".
+templ PublicLayout(title string) {
+	<!DOCTYPE html>
+	<html lang="en">
+		<head>
+			<meta charset="utf-8"/>
+			<meta name="viewport" content="width=device-width, initial-scale=1"/>
+			<title>{ title }</title>
+			<script src="/static/htmx.min.js" defer></script>
+			@templ.Raw(styleTag)
+		</head>
+		<body>
+			<header>
+				<a href="/" class="brand">Tapir</a>
+			</header>
+			<main>
+				{ children... }
+			</main>
+		</body>
+	</html>
+}
+
 // WelcomePage is the public landing page (served at /welcome, outside the auth
 // guard — ADR-012). Logged out: the tapir mascot, a one-line tagline, and a
 // single "Get Started" CTA into the shared Dex flow (sign-in and sign-up are the
 // same URL). Logged in: a greeting plus links back into the app and to log out.
 templ WelcomePage(user User, loggedIn bool) {
-	@Layout("Tapir — Watch less, know more") {
+	@PublicLayout("Tapir — Watch less, know more") {
 		<section class="welcome">
 			<div class="welcome-hero">
 				<pre aria-hidden="true">@templ.Raw(welcomeHero)</pre>
@@ -59,7 +84,7 @@ templ WelcomePage(user User, loggedIn bool) {
 				<div class="welcome-cta">
 					<a class="btn btn-lg" href="/auth/login">Get Started</a>
 				</div>
-				<p class="welcome-sub">New to Tapir? Just sign in — you'll complete a quick setup right after. Already have an account? You'll go straight through.</p>
+				<p class="welcome-sub">Tapir is invite-only right now. If you've been invited, sign in above. New summaries land gradually — Tapir fetches captions slowly to respect YouTube's limits.</p>
 			}
 		</section>
 	}
@@ -79,17 +104,80 @@ templ flashBanner(code string) {
 // #summary-list region; a non-HTMX request renders the whole page. flash carries
 // a one-shot notification (e.g. "connected", "registered") surfaced on arrival
 // after a POST→redirect.
-templ ListPage(rows []store.SummaryRow, f Filter, flash string, hasConnected bool) {
+templ ListPage(b listBuckets, f Filter, stats PipelineStats, flash string, hasConnected bool, channels []string, autoSummarize bool) {
 	@Layout("Tapir — Summaries") {
 		@flashBanner(flash)
-		@filterForm(f)
+		if hasConnected {
+			@pasteForm()
+		}
+		if !b.empty() || f.active() {
+			@filterForm(f, channels)
+		}
+		if stats.RateLimited > 0 || stats.Pending > 0 || stats.NoText > 0 {
+			@pipelineBar(stats)
+		}
+		if (stats.RateLimited+stats.Pending) > 0 && autoSummarize {
+			<p class="pipeline-note muted">
+				Tapir fetches captions slowly on purpose, to respect YouTube's limits —
+				new summaries land gradually. Check back tomorrow.
+			</p>
+		}
+		if (stats.RateLimited+stats.Pending) > 0 && !autoSummarize {
+			<p class="pipeline-note muted">
+				You are in Manual mode: new videos appear here but are not summarized
+				automatically. Use the Summarize button on the ones you want.
+			</p>
+			<p class="pipeline-note muted">
+				<a href="/account">Switch to Automatic</a> to have new videos summarized for you.
+			</p>
+		}
 		<div id="summary-list">
-			@summaryList(rows, hasConnected)
+			@summaryList(b, hasConnected, autoSummarize)
 		</div>
 	}
 }
 
-templ filterForm(f Filter) {
+// pipelineBar is the one-line backlog status. Counts are framed by what the user
+// can read NOW ("ready"), what is waiting behind the honest caption rate limit
+// ("in queue" = pending + rate-limited, never "fetching soon" — see A3/ADR-014),
+// and what is permanently unreadable ("no captions").
+templ pipelineBar(s PipelineStats) {
+	<div class="pipeline-bar">
+		if s.Summarized > 0 {
+			<span>{ fmt.Sprintf("%d ready", s.Summarized) }</span>
+		}
+		if s.RateLimited+s.Pending > 0 {
+			<span>{ fmt.Sprintf("%d in queue", s.RateLimited+s.Pending) }</span>
+		}
+		if s.NoText > 0 {
+			<span class="muted">{ fmt.Sprintf("%d no captions", s.NoText) }</span>
+		}
+	</div>
+}
+
+// pasteForm lets a connected user summarize any YouTube video by pasting its URL
+// (Feature 2). The result (a video card, or an inline error) swaps into
+// #paste-result; the next list refresh shows it inline. Summarization runs
+// through the shared caption rate gate like every other fetch.
+templ pasteForm() {
+	<form
+		class="paste"
+		method="post"
+		action="/paste"
+		hx-post="/paste"
+		hx-target="#paste-result"
+		hx-swap="innerHTML"
+	>
+		<label>
+			Summarize any video
+			<input type="url" name="url" placeholder="Paste a YouTube link…" required/>
+		</label>
+		<button type="submit">Add</button>
+	</form>
+	<div id="paste-result"></div>
+}
+
+templ filterForm(f Filter, channels []string) {
 	<form
 		class="filters"
 		method="get"
@@ -99,23 +187,41 @@ templ filterForm(f Filter) {
 		hx-swap="innerHTML"
 		hx-indicator="#filter-indicator"
 	>
-		<label>Channel <input type="text" name="channel" value={ f.Channel } placeholder="any"/></label>
-		<label>From <input type="date" name="from" value={ f.From }/></label>
-		<label>To <input type="date" name="to" value={ f.To }/></label>
+		if len(channels) > 0 {
+			<label>
+				Channels
+				<select name="channel" multiple size="4">
+					for _, c := range channels {
+						<option value={ c } selected?={ f.HasChannel(c) }>{ c }</option>
+					}
+				</select>
+			</label>
+		}
+		<label class="filter-check">
+			<input type="checkbox" name="summarized" value="1" if f.OnlySummarized { checked }/>
+			Summarized only
+		</label>
 		<button type="submit" class="btn">Filter</button>
 		<span id="filter-indicator" class="htmx-indicator">filtering…</span>
 	</form>
 }
 
-// summaryList is the swappable list fragment: one card per video (summarized or
-// not). Cards reflow to a single column on mobile; an empty list shows a friendly
-// first-run state instead of a blank table.
-templ summaryList(rows []store.SummaryRow, hasConnected bool) {
-	if len(rows) == 0 {
+// summaryList is the swappable list fragment. It leads with readable summaries +
+// recent un-summarized cards (b.Main), then collapses the noise so it does not
+// bury the payload (UX review B3/B4): a one-line count of caption-less videos,
+// and a single disclosure holding the older un-summarized back-catalogue. Cards
+// reflow to a single column on mobile; an empty list shows a friendly first-run
+// state instead of a blank table.
+templ summaryList(b listBuckets, hasConnected bool, autoSummarize bool) {
+	if b.empty() {
 		if hasConnected {
 			<div class="empty empty-connected">
-				<strong>Your YouTube account is connected!</strong>
-				<span>Run <code>tapir run</code> to discover your subscriptions. Videos will appear here once discovered. In manual mode, each new video gets a Summarize button.</span>
+				<strong>Your account is connected</strong>
+				if autoSummarize {
+					<span>Tapir is finding your subscriptions and fetching captions — summaries appear here gradually. Check back later.</span>
+				} else {
+					<span>Tapir is finding your subscriptions. You are in Manual mode, so videos appear here with a Summarize button — pick the ones you want, or switch to Automatic in your account.</span>
+				}
 			</div>
 		} else {
 			<div class="empty">
@@ -126,18 +232,35 @@ templ summaryList(rows []store.SummaryRow, hasConnected bool) {
 		}
 	} else {
 		<ul class="cards">
-			for _, r := range rows {
+			for _, r := range b.Main {
 				@VideoCard(r)
 			}
 		</ul>
+		if b.NoCaption > 0 {
+			<p class="list-note muted">{ fmt.Sprintf("%d video(s) have no captions and can't be summarized.", b.NoCaption) }</p>
+		}
+		if len(b.Older) > 0 {
+			<details class="older-videos">
+				<summary>{ fmt.Sprintf("Show %d older videos — summarize on demand", len(b.Older)) }</summary>
+				<ul class="cards">
+					for _, r := range b.Older {
+						@VideoCard(r)
+					}
+				</ul>
+			</details>
+		}
 	}
 }
 
-// VideoCard is one list card, also returned standalone by POST /v/{id}/summarize
-// (HTMX swaps it in place via outerHTML). A summarized video links to its detail
-// page and shows its provider chip / fallback badge / action state. An
-// unsummarized video gets a muted "pending" treatment and either a "Summarize"
-// button (to queue it) or a "Queued" chip when already requested.
+// VideoCard is one list card, returned standalone by POST /v/{id}/summarize and
+// /v/{id}/retry-now (HTMX swaps outerHTML). Five footer states, status-primary:
+//  1. Summarized — preview + chip + actions; no button.
+//  2. No captions (TranscriptStatus=="none") — terminal; "No transcript available"; no button.
+//  3. Queued (SummarizeRequested) — "Queued · summarizing shortly"; no button.
+//  4. Rate-limited — "In queue" + quiet "Summarize" → /retry-now.
+//  5. Pending (else) — "Not summarized" + quiet "Summarize" → /summarize.
+// States 4 and 5 use one verb ("Summarize") and one style (.btn-quiet); the
+// backend side-effect difference (clear-backoff vs. set-flag) is invisible to users.
 templ VideoCard(r store.SummaryRow) {
 	<li class={ "card", templ.KV("card-pending", !r.Summarized) } id={ "video-" + r.VideoID }>
 		if r.Summarized {
@@ -155,6 +278,7 @@ templ VideoCard(r store.SummaryRow) {
 		}
 		<div class="card-foot">
 			if r.Summarized {
+				// State 1: summarized — provider chip, fallback badge, action state.
 				if r.AIProvider != "" {
 					<span class="chip">{ r.AIProvider }</span>
 				}
@@ -164,20 +288,39 @@ templ VideoCard(r store.SummaryRow) {
 				if len(r.Actions) > 0 {
 					<span class="card-state">{ strings.Join(r.Actions, ", ") }</span>
 				}
-			} else if r.TranscriptStatus == "rate_limited" {
-				<span class="chip chip-retry" title="Caption fetch was rate-limited; tapir will retry automatically.">⏳ Retrying later</span>
+			} else if r.TranscriptStatus == "none" {
+				// State 2: no captions — terminal dead-end; nothing the user can do.
+				<span class="card-state muted">No transcript available</span>
 			} else if r.SummarizeRequested {
+				// State 3: queued — being summarized on the next pass; no scheduler jargon.
 				<span class="chip">Queued</span>
-				<span class="card-state muted">waiting for the next run</span>
+				<span class="card-state muted">summarizing shortly</span>
+			} else if r.TranscriptStatus == "rate_limited" {
+				// State 4: rate-limited — honest "in queue" status (NOT "fetching soon",
+				// which oversells imminence) + a quiet nudge → retry-now handler.
+				<span class="card-state muted">In queue</span>
+				<form
+					method="post"
+					action={ retryNowURL(r.VideoID) }
+					hx-post={ string(retryNowURL(r.VideoID)) }
+					hx-target={ "#video-" + r.VideoID }
+					hx-swap="outerHTML"
+					class="card-nudge-form"
+				>
+					<button type="submit" class="btn-quiet" title="Summarize this video">Summarize</button>
+				</form>
 			} else {
+				// State 5: pending — discovered, not yet attempted; nudge button → summarize handler.
+				<span class="card-state muted">Not summarized</span>
 				<form
 					method="post"
 					action={ summarizeURL(r.VideoID) }
 					hx-post={ string(summarizeURL(r.VideoID)) }
 					hx-target={ "#video-" + r.VideoID }
 					hx-swap="outerHTML"
+					class="card-nudge-form"
 				>
-					<button type="submit" class="btn-secondary">Summarize</button>
+					<button type="submit" class="btn-quiet" title="Summarize this video">Summarize</button>
 				</form>
 			}
 		</div>
@@ -196,7 +339,17 @@ templ TapirSpinner() {
 		<pre class="tapir-f3">@templ.Raw(tapirFrameHTML3)</pre>
 		<div class="tapir-bar"><span class="tapir-bar-fill" style={ "color:" + CharmMint }>{ tapirBarFill }</span></div>
 	</div>
-	<p class="tapir-label" role="status" aria-live="polite"><em>Summarizing…</em></p>
+	// Claude-Code / Crush-style status: playful gerunds cycle in place (CSS only,
+	// no JS). Decorative — aria-hidden — with one stable status line below for
+	// assistive tech.
+	<p class="tapir-verbs" aria-hidden="true">
+		<span class="tv1"><em>Fetching captions…</em></span>
+		<span class="tv2"><em>Chewing the cud…</em></span>
+		<span class="tv3"><em>Munching leaves…</em></span>
+		<span class="tv4"><em>Distilling the gist…</em></span>
+		<span class="tv5"><em>Summarizing…</em></span>
+	</p>
+	<p class="sr-only" role="status" aria-live="polite">Summarizing…</p>
 }
 
 // processingCard is the in-flight summarization card. It replaces the Summarize
@@ -220,11 +373,49 @@ templ processingCard(r store.SummaryRow) {
 	</li>
 }
 
+// waitingCard is the honest rate-limited state: the click landed but YouTube is
+// throttling the caption fetch, so the tapir rests and the card keeps polling
+// (gently, every 30s) until the background retry lands the summary — the user
+// never has to click again. Replaces the old silent revert to a Summarize button.
+templ waitingCard(r store.SummaryRow) {
+	<li
+		class="card card-waiting"
+		id={ "video-" + r.VideoID }
+		hx-get={ string(statusURL(r.VideoID)) }
+		hx-trigger="every 30s"
+		hx-swap="outerHTML"
+	>
+		<div class="card-title">{ displayTitle(r) }</div>
+		if cardMeta(r) != "" {
+			<div class="card-meta">{ cardMeta(r) }</div>
+		}
+		<div class="tapir-charm tapir-resting" aria-hidden="true">
+			<pre class="tapir-f1">@templ.Raw(tapirFrameHTML2)</pre>
+		</div>
+		<p class="tapir-label" role="status" aria-live="polite">
+			Waiting on YouTube rate limits. Tapir keeps trying, slowly and politely, and the summary will appear here on its own.
+		</p>
+	</li>
+}
+
+// noCaptionsCard is the terminal no-captions state: nothing to summarize, so the
+// card stops (no poll, no button to click again into the same dead end).
+templ noCaptionsCard(r store.SummaryRow) {
+	<li class="card card-no-captions" id={ "video-" + r.VideoID }>
+		<div class="card-title">{ displayTitle(r) }</div>
+		if cardMeta(r) != "" {
+			<div class="card-meta">{ cardMeta(r) }</div>
+		}
+		<p class="card-state muted">No captions available, so Tapir cannot summarize this one.</p>
+	</li>
+}
+
 // DetailPage is the full summary view: text, highlights, takeaways, metadata,
 // and the action button group.
 templ DetailPage(r store.SummaryRow) {
 	@Layout("Tapir — " + displayTitle(r)) {
 		<article class="detail">
+			<p class="back"><a href="/">← Summaries</a></p>
 			<h1>{ displayTitle(r) }</h1>
 			<p class="meta">
 				if detailMeta(r) != "" {
@@ -250,20 +441,10 @@ templ DetailPage(r store.SummaryRow) {
 				<p class="source"><a href={ externalURL(r.URL) } rel="noopener noreferrer">watch on source ↗</a></p>
 			}
 			@ActionButtons(r.VideoID, actionSet(r.Actions))
-			<section>
-				<h2>Summary</h2>
-				<p class="body">{ r.Summary }</p>
-			</section>
-			if len(r.Highlights) > 0 {
-				<section>
-					<h2>Highlights</h2>
-					<ul>
-						for _, h := range r.Highlights {
-							<li>{ h }</li>
-						}
-					</ul>
-				</section>
-			}
+			// Lead with the attention-saving payload: Takeaways ("is this worth my
+			// time?") first, then Highlights, then the full Summary last (UX review
+			// A8). Takeaways/Highlights are conditional, so a video without them falls
+			// through to the Summary leading naturally.
 			if len(r.Takeaways) > 0 {
 				<section>
 					<h2>Takeaways</h2>
@@ -274,13 +455,27 @@ templ DetailPage(r store.SummaryRow) {
 					</ul>
 				</section>
 			}
+			if len(r.Highlights) > 0 {
+				<section>
+					<h2>Highlights</h2>
+					<ul>
+						for _, h := range r.Highlights {
+							<li>{ h }</li>
+						}
+					</ul>
+				</section>
+			}
+			<section>
+				<h2>Summary</h2>
+				<p class="body">{ r.Summary }</p>
+			</section>
 		</article>
 	}
 }
 
 // RegisterPage is the explicit registration step (ADR-012): an authenticated Dex
-// subject with no tapir user picks a display name and accepts the terms to create
-// their account. errMsg, when set, reports a validation problem on the prior POST.
+// subject with no tapir user picks a display name to create their account.
+// errMsg, when set, reports a validation problem on the prior POST.
 templ RegisterPage(email, errMsg string) {
 	@Layout("Tapir — Register") {
 		<article class="register">
@@ -297,10 +492,6 @@ templ RegisterPage(email, errMsg string) {
 					Display name
 					<input type="text" name="display_name" required autofocus/>
 				</label>
-				<label class="checkbox">
-					<input type="checkbox" name="accept_terms" value="yes" required/>
-					I accept the terms of use
-				</label>
 				<button type="submit" class="btn">Register</button>
 			</form>
 		</article>
@@ -311,7 +502,7 @@ templ RegisterPage(email, errMsg string) {
 // signed-in email, the user's connected video accounts (each with a Disconnect
 // control), a Connect-YouTube link when none is connected, and the delete-account
 // danger zone. flash surfaces a one-shot notification (disconnect/connect).
-templ AccountPage(displayName, email string, conns []store.Connection, autoSummarize bool, flash string) {
+templ AccountPage(displayName, email string, conns []store.Connection, autoSummarize bool, channelErrors []store.ChannelError, flash string) {
 	@Layout("Tapir — Account") {
 		@flashBanner(flash)
 		<article class="account">
@@ -327,12 +518,31 @@ templ AccountPage(displayName, email string, conns []store.Connection, autoSumma
 			<section>
 				<h2>Summarization</h2>
 				<p class="muted">
-					Automatic summarizes every new video as it is discovered. Manual lets you
-					pick which videos to summarize — new videos appear in your list with a
-					Summarize button.
+					Automatic summarizes new videos from about the last week as they are
+					discovered. Older videos stay browsable — summarize them on demand.
+					Manual lets you pick which videos to summarize — every new video appears
+					in your list with a Summarize button.
 				</p>
 				@summarizeModeControl(autoSummarize)
 			</section>
+			if len(channelErrors) > 0 {
+				<section class="channel-errors">
+					<h2>Unavailable channels</h2>
+					<p class="muted">
+						{ fmt.Sprintf("%d channel(s) returned errors on the last discovery pass.", len(channelErrors)) }
+						These may have been deleted or made private on YouTube.
+					</p>
+					<ul class="channel-error-list">
+						for _, ce := range channelErrors {
+							<li>
+								<span class="channel-error-name">{ ce.ChannelName }</span>
+								<span class="chip chip-warn">unavailable</span>
+								<span class="muted channel-error-since">since { ce.FirstSeen.Format("2006-01-02") }</span>
+							</li>
+						}
+					</ul>
+				</section>
+			}
 			<section>
 				<h2>Connected accounts</h2>
 				if len(conns) == 0 {
@@ -414,20 +624,31 @@ templ ActionButtons(videoID string, active map[string]bool) {
 		hx-target="#action-buttons"
 		hx-swap="outerHTML"
 	>
-		for _, v := range actionVerbs {
-			<button
-				type="submit"
-				name="action"
-				value={ v }
-				class={ "action", templ.KV("active", active[v]) }
-				aria-pressed={ ariaPressed(active[v]) }
-			>
-				if active[v] {
-					{ "✓ " + actionLabel(v) }
-				} else {
-					{ actionLabel(v) }
-				}
-			</button>
-		}
+		// watched ↔ skipped are mutually exclusive (the store clears one when the
+		// other is set), so they read as a single segmented choice. "saved" is an
+		// independent toggle and sits apart (UX review C5).
+		<span class="segmented" role="group" aria-label="Watched or skipped">
+			@actionButton("watched", active["watched"])
+			@actionButton("skipped", active["skipped"])
+		</span>
+		@actionButton("saved", active["saved"])
 	</form>
 }
+
+// actionButton is one toggle button in the action group: a submit carrying its
+// verb, marked active (accent fill + ✓ prefix + aria-pressed) when currently set.
+templ actionButton(verb string, isActive bool) {
+	<button
+		type="submit"
+		name="action"
+		value={ verb }
+		class={ "action", templ.KV("active", isActive) }
+		aria-pressed={ ariaPressed(isActive) }
+	>
+		if isActive {
+			{ "✓ " + actionLabel(verb) }
+		} else {
+			{ actionLabel(verb) }
+		}
+	</button>
+}