docs(close-session): refresh classification gate post-#67 (#62)

The capture-routing in 723dab5 (#62 minimal) carried pre-#67 prose: it
warned "no populated classification.yaml yet" and steered repos_touched
away from brain/ai-sessions as if they'd escalate to confidential. #67
tagged the homelab repos internal, so that guidance is now wrong and
over-restrictive — listing the central repos is fine, and the summary's
fixed ai-sessions target no longer escalates the call. Point at
classification.yaml as the source of truth; reserve the refusal warning
for client-*/untagged material. Completes #62's veneer.

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

skills/close-session/SKILL.md

@@ -7,14 +7,14 @@ description: Disciplined end-of-session closeout for a Claude.ai chat before arc
 
 Capture a finishing Claude.ai work session into durable storage before the chat is archived and its context is lost. The goal is simple and load-bearing: **after this runs, a fresh session (or another agent) can reconstruct what was decided, what was shipped, and what is still open — without the original chat.**
 
-This skill is **batch**: one session in, findings out, done. It does not loop or re-read its own fresh output semantically (see Phase 5). Run the phases in order. Stop at any confirmation gate that says STOP.
+This skill is **batch**: one session in, findings out, done. Run the phases in order. Stop at any confirmation gate that says STOP.
 
 ## Operating constraints (read first)
 
 - **Gitea owner is always `mathias`.** Never guess another owner.
 - **Ground-truth at HEAD before acting.** Issue bodies and doc references rot — stale hostnames, retired services, moved endpoints. Before closing/commenting on any issue, `gitea:issue_get` it fresh. Before asserting an infra fact, verify it; do not copy it from memory or from a stale issue body.
 - **Current infra truths** (verify rather than trust, but these are the known-good baseline): Gitea is `git.d-ma.be` (not `gitea.d-ma.be`). LiteLLM is `http://koala:30401/v1/` (public `https://llm-api.d-ma.be`); piguard runs NGINX Proxy Manager only — never reference `piguard:4000` or `koala:4000`. Identity provider is Authentik (Dex migration complete).
-- **Side-effects need a confirmation gate.** Closing issues, committing files, and writing to the brain are all real writes. Surface exactly what will happen and get a clear yes before doing it. Reads are free; writes are gated.
+- **Side-effects need a confirmation gate.** Closing issues and capturing to brain/Gitea/ai-sessions are real writes. Surface exactly what will happen and get a clear yes before doing it. Reads are free; writes are gated.
 - **Never fabricate.** If the session didn't produce a decision worth persisting, say so and skip that write. An empty-but-honest closeout beats an invented one.
 
 ## Phase 1 — Harvest
@@ -34,76 +34,46 @@ For every repo touched this session, get its true current state before proposing
 
 Do not write anything in this phase. This is the read pass.
 
-## Phase 3 — Confirm and act on issue changes
+## Phase 3 — Plan the issue changes
 
-Present a single consolidated plan of issue actions: which to close (with closing comment), which to file (discovered-but-deferred work — token-budget gaps, recorded limitations, v2 follow-ups), which to comment on. Include the exact title/body for any new issue and the closing rationale for any close.
+Decide the issue actions: which to close (with closing comment), which to file (discovered-but-deferred work — token-budget gaps, recorded limitations, v2 follow-ups), which to comment on. Include the exact title/body for any new issue and the closing rationale for any close.
 
-**GATE — STOP and get explicit confirmation before any issue write.** Issue closes and new issues are side-effects. Once confirmed, execute them (`gitea:issue_close`, `gitea:issue_create`, `gitea:issue_comment`, all owner `mathias`), correcting any rotted references you found in Phase 2 as you go.
+These actions are **carried into the Phase 4 capture call** as `tickets[]` rather than executed here with direct `gitea:issue_*` calls — routing them through capture puts each one into the I5 audit record. (Closing an issue that needs a separate explanatory comment first is the one case to do directly; otherwise prefer the capture path.)
 
-## Phase 4 — Commit the canonical session summary
+## Phase 4 — Capture (one uniform call)
 
-Write one summary file to `mathias/ai-sessions`, committed directly to `main` via `gitea:file_write_branch` (no PR — this repo is solo and unprotected; if branch protection is ever added, fall back to a branch + PR).
+Persist the session via a **single `capture` call** (the `brain:capture` MCP tool, live on the Claude.ai connector). Capture owns the writes server-side — insights → brain, action items → Gitea tickets, summary → ai-sessions — plus the I1 sovereignty gate, the I5 audit record, and the supersession/read-after-write discipline. The skill's job is to *assemble the payload*, not to write each store itself. Do NOT fall back to separate `gitea:file_write_branch` + `brain_write` steps unless `capture` is unreachable (see fallback below).
 
-**Path:** `summaries/claudeai/<YYYY-MM>/<YYYY-MM-DD>-<topic-slug>-<chatid8>.md`
-where `<chatid8>` is the first 8 chars of the chat's UUID if known, else a short stable slug. `claudeai` has no host segment — Claude.ai is Anthropic-side, not a homelab host.
+**Assemble one payload:**
 
-**Frontmatter — the REDUCED live-capture schema.** A live close-session capture cannot populate the batch-export telemetry (token counts, message counts, duration_ms, permission_mode) — those only exist in the account export pipeline. Write only what's truthfully known, and mark fidelity so a reader (or the batch pipeline) can tell a live capture from an export:
+- **`insights[]`** — the generalizable learnings from Phase 1 (decisions/failures worth re-reading). Each: `{text, wing, hall}`; add `supersede_slug` to revise a prior note in place instead of creating a duplicate. `hall` ∈ facts/decisions/failures/hypotheses/sources.
+- **`tickets[]`** — the issue actions from Phase 3: `{repo, action, ...}` where action ∈ create/close/comment. Owner is always `mathias` (server-forced).
+- **`summary`** — `{title, body, repos_touched}`. Capture writes it to `ai-sessions` and stamps `fidelity` in frontmatter. Body stays reconstructable: one-paragraph summary, decisions, key artifacts, open threads.
+- **`context`** — `{harness: "claudeai-chat", session_ref: <chatid8-or-slug>, fidelity: "live-capture", actor: "mathias", classification: <see gate below>}`.
 
-```yaml
----
-title: "<concise session title>"
-client: "claudeai"
-interface: "claudeai-chat"
-date: "<YYYY-MM-DD>"
-repos_touched: [<repo slugs>]
-topic_tags: [<tags>]
-outcome: "<shipped|in-progress|abandoned>"
-fidelity: "live-capture"   # NOT an export; reconstructed live from chat
-captured_by: "close-session-skill"
----
-```
+**THE CLASSIFICATION GATE (read before calling — this is where capture refuses).**
+Capture computes an **effective classification = the strictest across EVERY target it touches** (each insight's `wing`, each ticket's `repo`, and every entry in `summary.repos_touched`), then refuses if that effective level is `confidential` and the origin is us-nexus (claude.ai is us-nexus). Levels come from `classification.yaml` at the brain root (source of truth, #67), with the code defaults as the floor: `hyperguild`/`homelab` → internal; `client-*` → confidential; **anything untagged → confidential (fail-safe)**.
+- **Tagged `internal` today** (safe through claude.ai): wings `hyperguild`, `homelab`; repos `brain`, `ai-sessions`, `infra`, `hyperguild`, `homelab`, `tapir`, `agentsquad`, `jepa-fx-risk`, `swedsl`. Treat `classification.yaml` as authoritative — this list is a hint, not gospel.
+- Declare `context.classification: "internal"` for normal homelab work.
+- `summary.repos_touched`, insight `wing`s, and ticket `repo`s are classification INPUTS, not free-form metadata — every target must resolve `internal` or the whole capture escalates to `confidential` and the gate refuses via claude.ai. Listing the central homelab repos (incl. `brain`/`ai-sessions`) is now fine; they're tagged. The summary always lands in `ai-sessions` (internal), so the summary path itself never escalates.
+- If a session genuinely touched **`client-*` or otherwise-untagged** material, it cannot be captured through claude.ai — note that in the verdict rather than trying to force it.
 
-Do not invent the export-only fields. `fidelity: live-capture` is the honest signal; if the batch export later produces a richer summary for the same session, the export is source of truth and supersedes this.
+**GATE — dry-run first, then execute.**
+1. Call `capture` with `dry_run: true`. It validates the whole payload and returns the would-be receipt + `effective_classification`, writing nothing.
+2. **STOP. Show the dry-run receipt** (effective classification, the insights/tickets/summary that would land) and get explicit confirmation.
+3. On confirmation, call `capture` again with `dry_run: false`. Read the returned receipt: it is partial-aware (`errors[]`, per-item `ok`). Report exactly what landed.
 
-**Body** (keep it reconstructable, not exhaustive):
-```markdown
-## One-paragraph summary
-## Decisions
-## Key artifacts
-## Open threads
-```
+If `capture` is **unreachable** (tool not on the connector — e.g. a session that started before a deploy; a tool-list refresh usually fixes it): say so. Only then fall back to the legacy inline path (`gitea:file_write_branch` summary + `brain_write`/`brain_update` + `brain_get` confirm), and note in the verdict that the I5 audit record was NOT produced.
 
-**GATE — STOP, show the full file (path + frontmatter + body), get explicit confirmation before committing.**
-
-## Phase 5 — Brain orientation note (the durable "where we are" record)
-
-Write one brain note so a fresh session can orient without the chat. This uses the `brain_update`/`brain_get` verbs (live since 2026-06).
-
-**Target:** `wing: <domain>` (the project/topic domain, e.g. `hyperguild`, `jepa-fx`), `hall: decisions`. The note is a knowledge-type record (a decision/orientation), grouped by knowledge-type, not by interface surface.
-
-**Batch read-after-write discipline (important — do these in order, do not interleave):**
-
-1. **Read first, before any write.** Check whether an orientation note already exists for this wing/topic. Do your "does this already exist / what should I supersede" reads NOW, up front. BM25/keyword search and `brain_get` are immediate; semantic/vector search may lag up to ~5 min after a write, so never rely on a semantic query to find something you wrote earlier in this same run.
-2. **Write or supersede:**
-   - **New note** → `brain_write` (wing, hall: decisions). Returns `{id, path, content_hash}`.
-   - **Superseding a prior orientation note** → `brain_update` (slug or path, wing, hall, content, reason). Whole-note replace; stamps `supersedes`/`updated_at`; returns `{id, path, content_hash, superseded}`. Use this instead of a second `brain_write` to the same slug — blind re-write creates duplicates/contradictions, which is the exact failure brain_update exists to prevent.
-3. **Confirm it landed** via `brain_get(id)` and check the returned `content_hash` matches what the write returned. This is the read-after-write confirmation — do it with `brain_get`, never a semantic query.
-
-**RULE: no semantic/vector brain query after the first `brain_update` in this run.** The batch shape makes this natural — read up front, write, confirm by id. If you ever find the skill wanting to semantic-search a just-superseded note, stop and flag it (that's the signal the staleness window matters and needs the synchronous-reembed follow-up).
-
-**GATE — STOP, show the note (target wing/hall, new-vs-supersede, full content), get explicit confirmation before the brain write.**
-
-After the note lands, if it relates to a note in another wing, create the cross-link inline with `brain_tunnel(source, target)` (idempotent; both paths brain-relative, must be in different wings). Optionally append a `session_log` entry (`session_id`, `skill: close-session`, `phase`, `final_status`) for telemetry. Both are now callable directly from Claude.ai — no Claude Code/Crush handoff needed.
-
-## Phase 6 — Verdict
+## Phase 5 — Verdict
 
 Deliver a final "safe to archive" verdict in the chat. Either:
 
-- **SAFE TO ARCHIVE** — list what landed (issues closed/filed with numbers, summary path, brain note id, any tunnels) so the trail is auditable. Then list anything still in the user's queue (e.g. a PR awaiting their merge, a decision owed next session).
-- **NOT YET** — name the specific gate that wasn't passed or the write that failed, and what to do about it.
+- **SAFE TO ARCHIVE** — list what landed from the capture receipt (issues closed/filed with numbers, summary path, brain note ids/paths) so the trail is auditable. Then list anything still in the user's queue (e.g. a PR awaiting their merge, a decision owed next session).
+- **NOT YET** — name the specific gate that wasn't passed, the capture refusal reason, or the per-item error from the receipt, and what to do about it.
 
-Never claim safe-to-archive if any gated write was declined or errored. The verdict is the skill's contract: if it says safe, the session can be lost without losing the work.
+Never claim safe-to-archive if the capture refused, any receipt item errored, or a gated confirmation was declined. The verdict is the skill's contract: if it says safe, the session can be lost without losing the work.
 
-## Why the gates and the batch discipline matter
+## Why the gate and the single-call shape matter
 
-The whole point is durability across a context reset. Every gate is a place where a wrong write would silently corrupt the record (close the wrong issue, overwrite a good brain note, commit a half-truth). The batch read-discipline in Phase 5 exists because the brain's vector index refreshes out-of-band: write-then-semantically-reread in the same run can read stale, so the skill front-loads reads and confirms writes by id. Get those right and the skill does what it promises — nothing important is lost when the chat goes away.
+The whole point is durability across a context reset. The capture call is the one place a wrong payload would silently corrupt the record (close the wrong issue, escalate to a refusal, commit a half-truth), which is why it is dry-run-then-confirm. Routing everything through one `capture` keeps the supersession discipline, the read-after-write confirmation, and the I5 audit trail server-side — the skill never has to carry those rules itself, and every closeout is uniformly audited. Get the payload and the classification right and the skill does what it promises — nothing important is lost when the chat goes away.