diff --git a/cmd/tapir/chat_test.go b/cmd/tapir/chat_test.go
new file mode 100644
index 0000000..c492bdb
--- /dev/null
+++ b/cmd/tapir/chat_test.go
@@ -0,0 +1,64 @@
+package main
+
+import (
+	"strings"
+	"testing"
+
+	"gitea.d-ma.be/mathias/tapir/internal/config"
+)
+
+// TestChatModelsReuseTheChainLocalFirst: the switcher offers the ADR-022 chain in
+// order, deduped — primary, local fallback, cloud.
+func TestChatModelsReuseTheChainLocalFirst(t *testing.T) {
+	got := chatModels(config.Config{
+		SummarizerModel:    "koala/phi4-mini",
+		FallbackModel:      "iguana/gemma4-26b",
+		CloudFallbackModel: "berget/mistral-small",
+	})
+	want := []string{"koala/phi4-mini", "iguana/gemma4-26b", "berget/mistral-small"}
+	if strings.Join(got, ",") != strings.Join(want, ",") {
+		t.Fatalf("chatModels = %v, want %v", got, want)
+	}
+}
+
+// TestChatCloudModelAbsentWhenDisabled: the local-first / NDA lever — with the
+// cloud fallback empty (TAPIR_CLOUD_FALLBACK_MODEL=""), no external model is
+// offered in the switcher, so chat content never leaves the local stack (ADR-027,
+// honouring ADR-022's "content stays local" guarantee).
+func TestChatCloudModelAbsentWhenDisabled(t *testing.T) {
+	got := chatModels(config.Config{
+		SummarizerModel:    "koala/phi4-mini",
+		FallbackModel:      "iguana/gemma4-26b",
+		CloudFallbackModel: "",
+	})
+	for _, m := range got {
+		if strings.HasPrefix(m, "berget/") || strings.Contains(m, "mistral") {
+			t.Fatalf("cloud model %q offered though the cloud fallback is disabled", m)
+		}
+	}
+	want := []string{"koala/phi4-mini", "iguana/gemma4-26b"}
+	if strings.Join(got, ",") != strings.Join(want, ",") {
+		t.Fatalf("chatModels = %v, want %v", got, want)
+	}
+}
+
+// TestChatModelsDedup: a config that reuses one alias across slots collapses to a
+// single switcher entry (no duplicate options).
+func TestChatModelsDedup(t *testing.T) {
+	got := chatModels(config.Config{
+		SummarizerModel:    "koala/phi4-mini",
+		FallbackModel:      "koala/phi4-mini",
+		CloudFallbackModel: "",
+	})
+	if len(got) != 1 || got[0] != "koala/phi4-mini" {
+		t.Fatalf("chatModels = %v, want a single deduped entry", got)
+	}
+}
+
+// TestBuildChatNilWithoutGateway: no gateway → no chat backend (routes unmounted,
+// read path unaffected).
+func TestBuildChatNilWithoutGateway(t *testing.T) {
+	if c := buildChat(config.Config{GatewayURL: ""}); c != nil {
+		t.Fatal("buildChat must return nil without a gateway URL")
+	}
+}
diff --git a/cmd/tapir/main.go b/cmd/tapir/main.go
index 2e01fc3..3a5ff65 100644
--- a/cmd/tapir/main.go
+++ b/cmd/tapir/main.go
@@ -197,6 +197,15 @@ func cmdServe(ctx context.Context, log *slog.Logger) error {
 	secretStore := secrets.NewFileStore(cfg.SecretsFile)
 	app := &web.App{Store: st, Identity: st, Auth: authn, Secrets: secretStore, Log: log, RecencyWindow: cfg.AutoSummarizeWindow}
 
+	// Per-video deeper-dive chat over the STORED transcript (ADR-027). Enabled
+	// whenever a gateway is configured — it needs no YouTube credentials because it
+	// never fetches. Guarded so a typed-nil never lands in the interface field
+	// (which would mount the routes over a nil backend).
+	if c := buildChat(cfg); c != nil {
+		app.Chat = c
+		log.Info("web chat enabled (stored-transcript only)", "models", chatModels(cfg))
+	}
+
 	// 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.
diff --git a/cmd/tapir/processor.go b/cmd/tapir/processor.go
index 40f0377..2c82ddf 100644
--- a/cmd/tapir/processor.go
+++ b/cmd/tapir/processor.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"strings"
 
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/chat"
 	"gitea.d-ma.be/mathias/tapir/internal/adapters/llm"
 	"gitea.d-ma.be/mathias/tapir/internal/adapters/secrets"
 	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
@@ -68,6 +69,49 @@ func buildSummarizer(cfg config.Config) *summarizer.Summarizer {
 	return summarizer.NewChain(eps, cfg.MaxTranscriptChars)
 }
 
+// chatModels is the ordered, local-first set of models offered in the chat
+// switcher (ADR-027), reusing the ADR-022 chain: primary → local fallback →
+// cloud. Empty entries are dropped and duplicates collapsed, so a client/NDA
+// deployment that sets the cloud fallback empty simply has no external model in
+// the switcher — the same local-first lever the summarizer honours.
+func chatModels(cfg config.Config) []string {
+	var models []string
+	add := func(m string) {
+		if m == "" {
+			return
+		}
+		for _, e := range models {
+			if e == m {
+				return
+			}
+		}
+		models = append(models, m)
+	}
+	add(cfg.SummarizerModel)
+	add(cfg.FallbackModel)
+	add(cfg.CloudFallbackModel)
+	return models
+}
+
+// buildChat wires the per-video chat service (ADR-027): a Completer factory over
+// the SAME LiteLLM gateway the summarizer uses (a different alias per model, not a
+// second client config) and the same transcript-truncation budget. It returns nil
+// when no gateway is configured — chat is simply not mounted, the read path is
+// unaffected. It deliberately takes NO YouTube source: chat is stored-only.
+func buildChat(cfg config.Config) *chat.Service {
+	if cfg.GatewayURL == "" {
+		return nil
+	}
+	models := chatModels(cfg)
+	if len(models) == 0 {
+		return nil
+	}
+	newClient := func(model string) chat.Completer {
+		return llm.New(cfg.GatewayURL, cfg.GatewayKey, model, cfg.SummarizerTimeout, llm.WithMaxTokens(cfg.SummaryMaxTokens))
+	}
+	return chat.New(newClient, models, 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 {
diff --git a/docs/use-cases/chat_transcript.feature b/docs/use-cases/chat_transcript.feature
new file mode 100644
index 0000000..47f4d0f
--- /dev/null
+++ b/docs/use-cases/chat_transcript.feature
@@ -0,0 +1,63 @@
+Feature: Chat with a video's stored transcript
+  As a reader whose summary made me want to dig deeper
+  I want to ask questions about the video without watching it
+  So that I can go further on the ones worth it, without leaving the reader
+
+  # ADR-027. The load-bearing constraint is safety-by-construction: chat runs
+  # ONLY against an already-stored transcript (ADR-021) and never fetches captions,
+  # never touches the rate gate, never reaches YouTube. Entry is from the summary
+  # view of one's OWN video; the conversation is ephemeral (no persisted history).
+
+  Background:
+    Given I have a summarized video with a stored transcript
+
+  Scenario: A summary view offers a deeper-dive into the video
+    When I view the summary
+    Then I see a "dig deeper" affordance that opens a chat about this video
+
+  Scenario: Ask a question answered from the stored transcript
+    When I ask a question in the chat
+    Then the answer is produced from the stored transcript
+    And no caption fetch and no YouTube call occurs
+
+  Scenario: Chat never fetches captions or reaches YouTube
+    When I ask a question in the chat
+    Then Tapir reads only the stored transcript
+    And the caption-fetch and video-fetch paths are never invoked
+
+  Scenario: A video with no stored transcript offers no chat
+    Given a video that has no stored transcript
+    When I open the chat for it
+    Then I am told chat is not available
+    And no fetch is attempted and no model is called
+
+  Scenario: The default model is the summary's model and is switchable
+    When I open the chat
+    Then the model defaults to the model that produced the summary
+    And I can switch among the offered chain models
+
+  Scenario: Switching models re-runs against the same transcript
+    When I ask a question with a different chain model selected
+    Then the chosen model answers
+    And it answers against the same stored transcript
+
+  Scenario: The cloud model is hidden when cloud is disabled
+    Given the cloud fallback model is disabled
+    Then the chat switcher offers only local models
+
+  Scenario: A long transcript is bounded and the chat says so
+    Given the stored transcript is longer than the model budget
+    When I ask a question
+    Then the answer is produced from a bounded portion
+    And the chat notes that it worked from a bounded portion
+
+  Scenario: A multi-turn conversation is ephemeral
+    When I ask a follow-up question
+    Then the prior turn is carried into the answer
+    And nothing about the conversation is written to the database
+
+  Scenario: Chat is reachable only from my own summary view
+    Given another user has a summarized video with a stored transcript
+    When I try to open the chat for their video
+    Then I get a not-found response
+    And no model is called
diff --git a/internal/web/chat.go b/internal/web/chat.go
new file mode 100644
index 0000000..164004c
--- /dev/null
+++ b/internal/web/chat.go
@@ -0,0 +1,218 @@
+package web
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"strings"
+
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/chat"
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
+)
+
+// Chatter is the per-video chat backend (ADR-027). *chat.Service satisfies it;
+// tests substitute a fake. It carries NO caption-fetch dependency — the chat
+// handlers reach it only after reading an already-stored transcript, so an
+// enabled chat cannot trigger a fetch, touch the rate gate, or reach YouTube.
+type Chatter interface {
+	// Models returns the offerable models, local-first (cloud absent when disabled).
+	Models() []string
+	// DefaultModel resolves the model a fresh chat opens with given the summary's
+	// model (the ADR-027 default), falling back to the first offered model.
+	DefaultModel(summaryModel string) string
+	// Answer runs one chat turn against the supplied stored transcript text.
+	Answer(ctx context.Context, req chat.Request) (chat.Reply, error)
+}
+
+// maxHistoryTurns bounds the ephemeral conversation carried per request, so a long
+// back-and-forth cannot grow the prompt without limit (the transcript already
+// dominates the budget). Older turns drop off the front.
+const maxHistoryTurns = 8
+
+// chatView is everything the chat templates render: the video identity for links
+// and titles, the model switcher state, the running (ephemeral) conversation, and
+// the honest flags — Available is false when no usable transcript is stored
+// (ADR-027: honest "not available", never a fetch), Truncated when the transcript
+// was bounded to fit the model, Error for a transient model failure.
+type chatView struct {
+	VideoID   string
+	Title     string
+	Available bool
+	Models    []string
+	Selected  string
+	History   []chat.Turn
+	Truncated bool
+	Error     string
+}
+
+// handleChat renders the chat page for a summarized video (GET). Entry is scoped
+// through GetSummaryByVideo, which is RLS/user-scoped: a video that is not the
+// requesting user's own resolves to ErrNotFound → 404, so chat is reachable only
+// from the user's own summary view (ADR-027 isolation). The transcript is read
+// from the SHARED store (ADR-021) — a pure DB read, never a caption fetch; an
+// absent/text-less transcript renders the honest "not available" state, no fetch.
+func (a *App) handleChat(w http.ResponseWriter, r *http.Request) {
+	userID, ok := a.currentUserID(w, r)
+	if !ok {
+		return
+	}
+	row, ok := a.loadOwnedSummary(w, r, userID)
+	if !ok {
+		return
+	}
+	_, hasText, ok := a.readTranscript(w, r, *row)
+	if !ok {
+		return
+	}
+	a.render(w, r, ChatPage(chatView{
+		VideoID:   row.VideoID,
+		Title:     displayTitle(*row),
+		Available: hasText,
+		Models:    a.Chat.Models(),
+		Selected:  a.Chat.DefaultModel(row.AIModel),
+	}))
+}
+
+// handleChatMessage answers one question against the stored transcript (POST).
+// It reads the transcript from the store (no fetch), runs the chosen model over
+// it plus the prior turns, appends the answer, and returns the refreshed chat
+// panel (HTMX) or the whole page (no-JS). A model failure is surfaced inline,
+// not as a 500 — the conversation and the question are preserved for a retry.
+func (a *App) handleChatMessage(w http.ResponseWriter, r *http.Request) {
+	userID, ok := a.currentUserID(w, r)
+	if !ok {
+		return
+	}
+	row, ok := a.loadOwnedSummary(w, r, userID)
+	if !ok {
+		return
+	}
+	if err := r.ParseForm(); err != nil {
+		http.Error(w, "bad form", http.StatusBadRequest)
+		return
+	}
+	transcript, hasText, ok := a.readTranscript(w, r, *row)
+	if !ok {
+		return
+	}
+
+	model := a.resolveModel(r.FormValue("model"), row.AIModel)
+	history := parseHistory(r.Form["hq"], r.Form["ha"])
+	question := strings.TrimSpace(r.FormValue("question"))
+
+	view := chatView{
+		VideoID:   row.VideoID,
+		Title:     displayTitle(*row),
+		Available: hasText,
+		Models:    a.Chat.Models(),
+		Selected:  model,
+		History:   history,
+	}
+
+	switch {
+	case !hasText:
+		// Honest "not available" — no fetch, no model call (ADR-027).
+	case question == "":
+		// A model switch with no text just re-renders — no wasted round-trip.
+	default:
+		reply, err := a.Chat.Answer(r.Context(), chat.Request{
+			Model:      model,
+			Transcript: transcript,
+			History:    history,
+			Question:   question,
+		})
+		if err != nil {
+			a.logger().Error("chat answer", "video", row.VideoID, "model", model, "err", err)
+			view.Error = "That model couldn't answer just now. Try again, or switch models."
+		} else {
+			view.History = appendTurn(history, chat.Turn{Question: question, Answer: reply.Answer})
+			view.Truncated = reply.Truncated
+		}
+	}
+	a.renderChat(w, r, view)
+}
+
+// loadOwnedSummary fetches the summary for the path's video scoped to userID, or
+// writes the right response (404 on not-found/not-owned, 500 on error) and reports
+// false. It is the single isolation gate for both chat handlers.
+func (a *App) loadOwnedSummary(w http.ResponseWriter, r *http.Request, userID string) (*store.SummaryRow, bool) {
+	videoID := r.PathValue("videoId")
+	row, err := a.Store.GetSummaryByVideo(r.Context(), userID, videoID)
+	if errors.Is(err, store.ErrNotFound) {
+		http.NotFound(w, r)
+		return nil, false
+	}
+	if err != nil {
+		a.serverError(w, r, "chat get summary", err)
+		return nil, false
+	}
+	return row, true
+}
+
+// readTranscript reads the shared stored transcript for a row (ADR-021) and
+// reports whether it carries usable text. It is a pure DB read — NO caption fetch,
+// the property the whole feature's safety rests on. ok is false only on a store
+// error (after a 500 is written); a missing/text-less transcript is (",", false,
+// true) — the honest "not available" case, handled by the caller, not an error.
+func (a *App) readTranscript(w http.ResponseWriter, r *http.Request, row store.SummaryRow) (content string, hasText, ok bool) {
+	t, found, err := a.Store.GetTranscript(r.Context(), row.Channel, row.ProviderVideoID)
+	if err != nil {
+		a.serverError(w, r, "chat get transcript", err)
+		return "", false, false
+	}
+	if !found || !t.HasText() {
+		return "", false, true
+	}
+	return t.Content, true, true
+}
+
+// renderChat returns the chat panel fragment for an HTMX request, or the full
+// chat page otherwise (no-JS POST re-renders the whole page).
+func (a *App) renderChat(w http.ResponseWriter, r *http.Request, v chatView) {
+	if isHTMX(r) {
+		a.render(w, r, chatPanel(v))
+		return
+	}
+	a.render(w, r, ChatPage(v))
+}
+
+// resolveModel keeps the posted model only when it is an offered option; anything
+// else (a forged value, or a model dropped because cloud is disabled) falls back
+// to the default. The chat.Service enforces the same guard before the gateway;
+// this keeps the rendered switcher honest too.
+func (a *App) resolveModel(posted, summaryModel string) string {
+	for _, m := range a.Chat.Models() {
+		if m == posted {
+			return posted
+		}
+	}
+	return a.Chat.DefaultModel(summaryModel)
+}
+
+// parseHistory zips the parallel hidden hq/ha fields back into ordered turns,
+// keeping only the most recent maxHistoryTurns. net/url preserves the submission
+// order of repeated fields, so the pairing is stable.
+func parseHistory(qs, as []string) []chat.Turn {
+	n := len(qs)
+	if len(as) < n {
+		n = len(as)
+	}
+	turns := make([]chat.Turn, 0, n)
+	for i := 0; i < n; i++ {
+		turns = append(turns, chat.Turn{Question: qs[i], Answer: as[i]})
+	}
+	return capHistory(turns)
+}
+
+// appendTurn adds a completed exchange and re-bounds the conversation.
+func appendTurn(history []chat.Turn, t chat.Turn) []chat.Turn {
+	return capHistory(append(history, t))
+}
+
+// capHistory keeps the last maxHistoryTurns turns (drops the oldest).
+func capHistory(turns []chat.Turn) []chat.Turn {
+	if len(turns) <= maxHistoryTurns {
+		return turns
+	}
+	return turns[len(turns)-maxHistoryTurns:]
+}
diff --git a/internal/web/chat_handler_test.go b/internal/web/chat_handler_test.go
new file mode 100644
index 0000000..7fea6aa
--- /dev/null
+++ b/internal/web/chat_handler_test.go
@@ -0,0 +1,340 @@
+package web_test
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/stretchr/testify/require"
+
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/chat"
+	"gitea.d-ma.be/mathias/tapir/internal/adapters/store"
+	"gitea.d-ma.be/mathias/tapir/internal/domain"
+	"gitea.d-ma.be/mathias/tapir/internal/web"
+)
+
+// videoZ is a video id used by the isolation test for a DIFFERENT user's video.
+const videoZ = "33333333-3333-3333-3333-333333333333"
+
+// --- chat test doubles -----------------------------------------------------
+
+// fakeChatter is a web.Chatter that records the request it received and returns a
+// canned reply. It performs NO network and NO fetch — it stands in for the real
+// chat.Service so the handler behaviour is what's under test.
+type fakeChatter struct {
+	models    []string
+	reply     chat.Reply
+	err       error
+	gotReq    chat.Request
+	callCount int
+}
+
+func (f *fakeChatter) Models() []string { return f.models }
+
+func (f *fakeChatter) DefaultModel(summaryModel string) string {
+	for _, m := range f.models {
+		if m == summaryModel {
+			return summaryModel
+		}
+	}
+	if len(f.models) > 0 {
+		return f.models[0]
+	}
+	return ""
+}
+
+func (f *fakeChatter) Answer(_ context.Context, req chat.Request) (chat.Reply, error) {
+	f.callCount++
+	f.gotReq = req
+	if f.err != nil {
+		return chat.Reply{}, f.err
+	}
+	return f.reply, nil
+}
+
+// tripwireProcessor and tripwireFetcher are the YouTube-reaching collaborators
+// (summarize → caption fetch, and the paste metadata fetch). Wired into the App
+// for the safety test, they fail it the instant chat routes into either — the
+// behavioural proof that chat never triggers a fetch (ADR-027).
+type tripwireProcessor struct{ t *testing.T }
+
+func (p tripwireProcessor) ProcessVideo(context.Context, string, string) error {
+	p.t.Fatal("chat triggered summarization (→ caption fetch) — must never happen (ADR-027)")
+	return nil
+}
+
+type tripwireFetcher struct{ t *testing.T }
+
+func (f tripwireFetcher) FetchVideo(context.Context, string, string) (domain.Video, error) {
+	f.t.Fatal("chat triggered a YouTube video fetch — must never happen (ADR-027)")
+	return domain.Video{}, nil
+}
+
+// --- helpers ---------------------------------------------------------------
+
+// newChatApp builds the App under test as the registered stub user, with a Chat
+// backend wired. Mirrors newApp but adds chat (and any extra wiring via mutate).
+func newChatApp(t *testing.T, chatter web.Chatter, mutate func(*web.App)) *web.App {
+	t.Helper()
+	s := newStore(t)
+	app := &web.App{
+		Store:    s,
+		Identity: s,
+		Auth:     web.StubAuth{U: web.User{Subject: stubSubject}},
+		Chat:     chatter,
+	}
+	if mutate != nil {
+		mutate(app)
+	}
+	return app
+}
+
+// seededProviderVideoID mirrors seedVideo's derivation so the chat path's
+// (provider, providerVideoID) transcript key matches the seeded video row.
+func seededProviderVideoID(videoID string) string { return "pv-" + videoID[:8] }
+
+// seedTranscript stores a shared (provider, providerVideoID) transcript — the
+// ADR-021 stored content the chat reads. Captions source = usable text.
+func seedTranscript(t *testing.T, s *store.Store, videoID, content string) {
+	t.Helper()
+	err := s.SaveTranscript(context.Background(), "youtube", seededProviderVideoID(videoID),
+		domain.Transcript{Source: domain.SourceCaptions, Language: "en", Content: content})
+	require.NoError(t, err)
+}
+
+func getChat(t *testing.T, app *web.App, videoID string) *httptest.ResponseRecorder {
+	t.Helper()
+	return do(t, app, httptest.NewRequest(http.MethodGet, "/v/"+videoID+"/chat", nil))
+}
+
+func postChat(t *testing.T, app *web.App, videoID string, form url.Values, htmx bool) *httptest.ResponseRecorder {
+	t.Helper()
+	req := httptest.NewRequest(http.MethodPost, "/v/"+videoID+"/chat", strings.NewReader(form.Encode()))
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	if htmx {
+		req.Header.Set("HX-Request", "true")
+	}
+	return do(t, app, req)
+}
+
+// --- scenarios -------------------------------------------------------------
+
+// The "dig deeper" affordance appears on a summary detail view only when chat is
+// enabled, and links to that video's chat — the single entry point (ADR-027 §1).
+func TestChatEntryAffordanceOnSummaryView(t *testing.T) {
+	ctx := context.Background()
+	withChat := newChatApp(t, &fakeChatter{models: []string{"phi4-mini"}}, nil)
+	p := rawPool(t)
+	resetDB(t, p)
+	require.NoError(t, deliver(ctx, withChat, videoX, "body x"))
+	seedVideo(t, p, videoX, "X Title", "https://x", time.Time{})
+
+	html := body(t, do(t, withChat, httptest.NewRequest(http.MethodGet, "/v/"+videoX, nil)))
+	require.Contains(t, html, "Dig deeper", "the deeper-dive affordance is shown when chat is enabled")
+	require.Contains(t, html, "/v/"+videoX+"/chat", "it links to this video's chat")
+
+	// With no chat backend wired the affordance is absent (routes unmounted).
+	noChat := newApp(t)
+	require.NoError(t, deliver(ctx, noChat, videoX, "body x"))
+	html = body(t, do(t, noChat, httptest.NewRequest(http.MethodGet, "/v/"+videoX, nil)))
+	require.NotContains(t, html, "Dig deeper", "no affordance when chat is disabled")
+}
+
+// THE KEY SAFETY ASSERTION (ADR-027): a chat answer is produced entirely from the
+// stored transcript — the model receives the stored text, and neither the
+// summarize→fetch path nor the YouTube fetch path is ever touched. The tripwire
+// collaborators t.Fatal the test if chat reaches them.
+func TestChatAnswersFromStoredTranscriptWithoutAnyFetch(t *testing.T) {
+	ctx := context.Background()
+	const transcript = "STORED-TRANSCRIPT-MARKER: the host explains attention budgets."
+	chatter := &fakeChatter{
+		models: []string{"phi4-mini"},
+		reply:  chat.Reply{Answer: "It is about attention budgets."},
+	}
+	app := newChatApp(t, chatter, func(a *web.App) {
+		a.Processor = tripwireProcessor{t} // fails the test if chat summarizes/fetches
+		a.Fetcher = tripwireFetcher{t}     // fails the test if chat fetches video metadata
+	})
+	p := rawPool(t)
+	resetDB(t, p)
+	require.NoError(t, deliver(ctx, app, videoX, "summary body"))
+	seedVideo(t, p, videoX, "X Title", "https://x", time.Time{})
+	seedTranscript(t, app.Store.(*store.Store), videoX, transcript)
+
+	form := url.Values{"question": {"what is it about?"}, "model": {"phi4-mini"}}
+	rec := postChat(t, app, videoX, form, true)
+
+	require.Equal(t, http.StatusOK, rec.Code)
+	require.Contains(t, body(t, rec), "It is about attention budgets.", "the answer is rendered")
+	require.Equal(t, 1, chatter.callCount, "the model was asked exactly once")
+	require.Equal(t, transcript, chatter.gotReq.Transcript,
+		"the model answered from the STORED transcript, not a fetched one")
+	// The tripwires never firing IS the no-fetch / no-YouTube proof.
+}
+
+// A video with no stored transcript yields an honest "not available" — and never
+// a fetch, never a model call (ADR-027 §2: do not add an on-demand-fetch path).
+func TestChatUnavailableWhenNoStoredTranscript(t *testing.T) {
+	ctx := context.Background()
+	chatter := &fakeChatter{models: []string{"phi4-mini"}}
+	app := newChatApp(t, chatter, func(a *web.App) {
+		a.Processor = tripwireProcessor{t}
+		a.Fetcher = tripwireFetcher{t}
+	})
+	p := rawPool(t)
+	resetDB(t, p)
+	require.NoError(t, deliver(ctx, app, videoX, "summary body"))
+	seedVideo(t, p, videoX, "X Title", "https://x", time.Time{})
+	// NB: no seedTranscript — the transcript is absent.
+
+	rec := getChat(t, app, videoX)
+	require.Equal(t, http.StatusOK, rec.Code)
+	require.Contains(t, body(t, rec), "isn't available", "honest not-available copy")
+
+	// Asking anyway still triggers nothing: no model call, no fetch.
+	rec = postChat(t, app, videoX, url.Values{"question": {"hi"}, "model": {"phi4-mini"}}, true)
+	require.Equal(t, http.StatusOK, rec.Code)
+	require.Equal(t, 0, chatter.callCount, "no model call without a stored transcript")
+}
+
+// Chat is reachable ONLY from the user's own summary view: opening chat for a
+// video that belongs to another user 404s (the summary read is RLS-scoped), so a
+// guessed/arbitrary video id is not a chat surface (ADR-027 §5 isolation).
+func TestChatOnlyReachableForOwnVideo(t *testing.T) {
+	chatter := &fakeChatter{models: []string{"phi4-mini"}}
+	app := newChatApp(t, chatter, func(a *web.App) {
+		a.Processor = tripwireProcessor{t}
+		a.Fetcher = tripwireFetcher{t}
+	})
+	p := rawPool(t)
+	resetDB(t, p)
+
+	// A summarized video with a stored transcript owned by ANOTHER user.
+	const other = "22222222-2222-2222-2222-222222222222"
+	seedForeignSummaryWithTranscript(t, p, other, videoZ, "Foreign Title")
+
+	rec := getChat(t, app, videoZ)
+	require.Equal(t, http.StatusNotFound, rec.Code, "cannot open chat for another user's video")
+	require.Equal(t, 0, chatter.callCount, "no model call for a non-owned video")
+
+	rec = postChat(t, app, videoZ, url.Values{"question": {"hi"}, "model": {"phi4-mini"}}, true)
+	require.Equal(t, http.StatusNotFound, rec.Code, "cannot post chat to another user's video")
+}
+
+// The switcher offers exactly the backend's models, defaults to the summary's own
+// model, and a switch re-runs against the SAME transcript with the chosen model
+// (ADR-027 §3 — model-comparison instrumentation). A model dropped from the offer
+// set (e.g. cloud disabled) is not rendered.
+func TestChatModelSwitcherDefaultAndSwitch(t *testing.T) {
+	ctx := context.Background()
+	// The seeded summary's model is "phi4-mini" (see handlers_test summary()).
+	chatter := &fakeChatter{
+		models: []string{"phi4-mini", "gemma4-26b"}, // note: no cloud model offered
+		reply:  chat.Reply{Answer: "answer"},
+	}
+	app := newChatApp(t, chatter, nil)
+	p := rawPool(t)
+	resetDB(t, p)
+	require.NoError(t, deliver(ctx, app, videoX, "summary body"))
+	seedVideo(t, p, videoX, "X Title", "https://x", time.Time{})
+	seedTranscript(t, app.Store.(*store.Store), videoX, "the transcript text")
+
+	html := body(t, getChat(t, app, videoX))
+	require.Contains(t, html, "gemma4-26b", "every offered model is in the switcher")
+	require.NotContains(t, html, "mistral", "a non-offered (cloud-disabled) model is absent")
+	require.Contains(t, html, `value="phi4-mini" selected`, "defaults to the summary's own model")
+
+	// Switching to gemma re-runs against the same stored transcript.
+	form := url.Values{"question": {"q"}, "model": {"gemma4-26b"}}
+	rec := postChat(t, app, videoX, form, true)
+	require.Equal(t, http.StatusOK, rec.Code)
+	require.Equal(t, "gemma4-26b", chatter.gotReq.Model, "the chosen model answers")
+	require.Equal(t, "the transcript text", chatter.gotReq.Transcript, "against the same transcript")
+}
+
+// A truncated transcript surfaces the honest bounded-context note (ADR-027 §2).
+func TestChatTruncationNoteShown(t *testing.T) {
+	ctx := context.Background()
+	chatter := &fakeChatter{
+		models: []string{"phi4-mini"},
+		reply:  chat.Reply{Answer: "answer", Truncated: true},
+	}
+	app := newChatApp(t, chatter, nil)
+	p := rawPool(t)
+	resetDB(t, p)
+	require.NoError(t, deliver(ctx, app, videoX, "summary body"))
+	seedVideo(t, p, videoX, "X Title", "https://x", time.Time{})
+	seedTranscript(t, app.Store.(*store.Store), videoX, "long transcript")
+
+	rec := postChat(t, app, videoX, url.Values{"question": {"q"}, "model": {"phi4-mini"}}, true)
+	require.Contains(t, body(t, rec), "bounded portion", "the truncation note is shown")
+}
+
+// A multi-turn conversation is carried in the request (hidden fields), not the DB:
+// prior turns ride back into the next answer, and nothing is persisted (ADR-027 §4).
+func TestChatMultiTurnHistoryIsEphemeral(t *testing.T) {
+	ctx := context.Background()
+	chatter := &fakeChatter{models: []string{"phi4-mini"}, reply: chat.Reply{Answer: "second answer"}}
+	app := newChatApp(t, chatter, nil)
+	p := rawPool(t)
+	resetDB(t, p)
+	require.NoError(t, deliver(ctx, app, videoX, "summary body"))
+	seedVideo(t, p, videoX, "X Title", "https://x", time.Time{})
+	seedTranscript(t, app.Store.(*store.Store), videoX, "the transcript")
+
+	// Second turn posts the prior exchange as hidden history fields.
+	form := url.Values{
+		"question": {"follow-up question"},
+		"model":    {"phi4-mini"},
+		"hq":       {"first question"},
+		"ha":       {"first answer"},
+	}
+	rec := postChat(t, app, videoX, form, true)
+	require.Equal(t, http.StatusOK, rec.Code)
+
+	require.Len(t, chatter.gotReq.History, 1, "the prior turn was carried into the request")
+	require.Equal(t, "first question", chatter.gotReq.History[0].Question)
+	require.Equal(t, "first answer", chatter.gotReq.History[0].Answer)
+
+	html := body(t, rec)
+	require.Contains(t, html, "second answer", "the new answer renders")
+	require.Contains(t, html, "first question", "the conversation persists in page state")
+
+	// Nothing was written to the DB — there is no chat table; the summaries/actions
+	// are unchanged by a chat turn.
+	row, err := app.Store.GetSummaryByVideo(ctx, userID, videoX)
+	require.NoError(t, err)
+	require.Equal(t, "summary body", row.Summary, "chat never mutates stored data")
+}
+
+// --- foreign-user seeding (isolation) --------------------------------------
+
+// seedForeignSummaryWithTranscript creates a fully-summarized, transcript-backed
+// video owned by a DIFFERENT user via the raw pool (which bypasses RLS), so the
+// isolation test can confirm the requesting user cannot open chat for it.
+func seedForeignSummaryWithTranscript(t *testing.T, p *pgxpool.Pool, otherUserID, videoID, title string) {
+	t.Helper()
+	ctx := context.Background()
+	_, err := p.Exec(ctx, `INSERT INTO users (id) VALUES ($1) ON CONFLICT (id) DO NOTHING`, otherUserID)
+	require.NoError(t, err)
+	_, err = p.Exec(ctx,
+		`INSERT INTO videos (id, user_id, provider, provider_video_id, title, url)
+		 VALUES ($1, $2, 'youtube', $3, $4, 'https://z')`,
+		videoID, otherUserID, seededProviderVideoID(videoID), title)
+	require.NoError(t, err)
+	_, err = p.Exec(ctx,
+		`INSERT INTO summaries (user_id, video_id, summary, ai_provider, ai_model)
+		 VALUES ($1, $2, 'foreign summary', 'local', 'phi4-mini')`,
+		otherUserID, videoID)
+	require.NoError(t, err)
+	_, err = p.Exec(ctx,
+		`INSERT INTO transcripts (provider, provider_video_id, source, language, content)
+		 VALUES ('youtube', $1, 'captions', 'en', 'foreign transcript')`,
+		seededProviderVideoID(videoID))
+	require.NoError(t, err)
+}
diff --git a/internal/web/handlers.go b/internal/web/handlers.go
index 48041e6..6d20c37 100644
--- a/internal/web/handlers.go
+++ b/internal/web/handlers.go
@@ -26,6 +26,10 @@ type Store interface {
 	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)
+	// GetTranscript reads the shared, stored transcript keyed by (provider,
+	// providerVideoID) — ADR-021. It is a pure DB read: it never fetches captions,
+	// so the chat path (ADR-027) reaches it without any caption-fetch surface.
+	GetTranscript(ctx context.Context, provider, providerVideoID string) (domain.Transcript, bool, error)
 	ActionsFor(ctx context.Context, userID string, videoIDs []string) (map[string][]string, error)
 	SetAction(ctx context.Context, userID, videoID, action string) error
 	ClearAction(ctx context.Context, userID, videoID, action string) error
@@ -91,6 +95,11 @@ type App struct {
 	// 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
+	// Chat, when non-nil, answers per-video questions against a video's STORED
+	// transcript (ADR-027). Nil = the /v/{id}/chat routes are not mounted and the
+	// summary view shows no "dig deeper" affordance. It holds no caption-fetch
+	// dependency, so an enabled chat cannot reach YouTube or the rate gate.
+	Chat Chatter
 	// 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
@@ -149,6 +158,12 @@ func (a *App) Router() http.Handler {
 		app.HandleFunc("POST /paste", a.handlePaste)
 	}
 	app.HandleFunc("GET /v/{videoId}/status", a.handleStatus)
+	// Per-video deeper-dive chat over the STORED transcript (ADR-027). Mounted only
+	// when a Chat backend is wired; it never fetches captions.
+	if a.Chat != nil {
+		app.HandleFunc("GET /v/{videoId}/chat", a.handleChat)
+		app.HandleFunc("POST /v/{videoId}/chat", a.handleChatMessage)
+	}
 	app.HandleFunc("GET /register", a.handleRegisterForm)
 	app.HandleFunc("POST /register", a.handleRegister)
 
@@ -265,7 +280,7 @@ func (a *App) handleDetail(w http.ResponseWriter, r *http.Request) {
 		a.serverError(w, r, "get summary", err)
 		return
 	}
-	a.render(w, r, DetailPage(*row))
+	a.render(w, r, DetailPage(*row, a.Chat != nil))
 }
 
 // handleAction toggles one action: re-clicking an active verb clears it, else it
diff --git a/internal/web/view.go b/internal/web/view.go
index e053c46..9507036 100644
--- a/internal/web/view.go
+++ b/internal/web/view.go
@@ -184,6 +184,12 @@ func statusURL(videoID string) templ.SafeURL {
 	return templ.SafeURL("/v/" + videoID + "/status")
 }
 
+// chatURL builds the per-video chat path (GET renders the page, POST answers) —
+// the deeper-dive over the stored transcript (ADR-027).
+func chatURL(videoID string) templ.SafeURL {
+	return templ.SafeURL("/v/" + videoID + "/chat")
+}
+
 // Charmbracelet-inspired palette for the summarizing animation (TapirSpinner) —
 // a charm purple box, pink tapir, mint snout/eyes/progress. Kept as named consts
 // so the inline span colours and the CSS track/fill share one source of truth.
@@ -725,6 +731,28 @@ 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); }
 
+/* deeper-dive chat (ADR-027) */
+.dig-deeper { margin: var(--s3) 0 0; }
+.chat .chat-scope { margin: 0 0 var(--s4); font-size: .9rem; }
+.chat-panel { display: flex; flex-direction: column; gap: var(--s3); }
+.chat-log { display: flex; flex-direction: column; gap: var(--s3); }
+.chat-turn { border-radius: var(--radius); padding: var(--s2) var(--s3); }
+.chat-turn p { margin: 0; }
+.chat-q { background: var(--accent-weak); color: var(--fg); align-self: flex-end; max-width: 85%; }
+.chat-a { background: var(--card); border: 1px solid var(--line); }
+.chat-a .body { white-space: pre-wrap; line-height: 1.6; }
+.chat-note { margin: 0; font-size: .82rem; font-style: italic; }
+.chat-error { margin: 0; color: #8a1c10; font-size: .9rem; }
+@media (prefers-color-scheme: dark) { .chat-error { color: #f3b5ae; } }
+.chat-form { display: flex; flex-direction: column; gap: var(--s2); margin: var(--s2) 0 0; }
+.chat-model { flex-direction: column; display: flex; gap: var(--s1); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); align-items: flex-start; }
+.chat-model select { font: inherit; text-transform: none; letter-spacing: 0; padding: .4rem .55rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); color: var(--fg); }
+.chat-model-hint { text-transform: none; letter-spacing: 0; font-size: .78rem; }
+.chat-form textarea { font: inherit; padding: .55rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); color: var(--fg); resize: vertical; }
+.chat-form textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
+.chat-form .btn { align-self: flex-start; }
+.chat-thinking { font-style: italic; }
+
 /* 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; }
diff --git a/internal/web/views.templ b/internal/web/views.templ
index 4d82cd6..97ebd21 100644
--- a/internal/web/views.templ
+++ b/internal/web/views.templ
@@ -411,8 +411,9 @@ templ noCaptionsCard(r store.SummaryRow) {
 }
 
 // DetailPage is the full summary view: text, highlights, takeaways, metadata,
-// and the action button group.
-templ DetailPage(r store.SummaryRow) {
+// and the action button group. chatEnabled adds the "dig deeper" affordance
+// (ADR-027) — a quiet link into the per-video chat over the stored transcript.
+templ DetailPage(r store.SummaryRow, chatEnabled bool) {
 	@Layout("Tapir — " + displayTitle(r)) {
 		<article class="detail">
 			<p class="back"><a href="/">← Summaries</a></p>
@@ -440,6 +441,11 @@ templ DetailPage(r store.SummaryRow) {
 			if r.URL != "" {
 				<p class="source"><a href={ externalURL(r.URL) } rel="noopener noreferrer">watch on source ↗</a></p>
 			}
+			if chatEnabled {
+				// Where the "I want more" reaction goes (ADR-027). A quiet link, not a
+				// loud CTA — it deepens value for a reader already here, never nudges.
+				<p class="dig-deeper"><a class="btn-secondary" href={ chatURL(r.VideoID) }>Dig deeper — ask about this video →</a></p>
+			}
 			@ActionButtons(r.VideoID, actionSet(r.Actions))
 			// Lead with the attention-saving payload: Takeaways ("is this worth my
 			// time?") first, then Highlights, then the full Summary last (UX review
@@ -473,6 +479,74 @@ templ DetailPage(r store.SummaryRow) {
 	}
 }
 
+// ChatPage is the per-video deeper-dive chat (ADR-027): a question/answer surface
+// over the video's ALREADY-STORED transcript. The back link returns to the
+// summary it was entered from. All the interaction lives in chatPanel so the HTMX
+// answer-swap and the no-JS full-page render share one component.
+templ ChatPage(v chatView) {
+	@Layout("Tapir — Ask — " + v.Title) {
+		<article class="detail chat">
+			<p class="back"><a href={ videoURL(v.VideoID) }>← { v.Title }</a></p>
+			<h1>Ask about this video</h1>
+			<p class="chat-scope muted">Answers come only from this video's stored transcript — Tapir never fetches anything new here.</p>
+			@chatPanel(v)
+		</article>
+	}
+}
+
+// chatPanel is the conversation + ask form, swapped in place on each answer
+// (HTMX targets #chat-panel, outerHTML). When no transcript is stored it shows the
+// honest "not available" state and no form (ADR-027: never a fetch). The prior
+// turns ride as hidden hq/ha fields so the ephemeral conversation survives the
+// round-trip without any persisted state.
+templ chatPanel(v chatView) {
+	<div id="chat-panel" class="chat-panel">
+		if !v.Available {
+			<p class="chat-unavailable muted">Chat isn't available for this video — its transcript isn't stored, and chat never fetches new captions. Summarize the video first to store its transcript.</p>
+		} else {
+			if len(v.History) > 0 {
+				<div class="chat-log">
+					for _, t := range v.History {
+						<div class="chat-turn chat-q"><p>{ t.Question }</p></div>
+						<div class="chat-turn chat-a"><p class="body">{ t.Answer }</p></div>
+					}
+				</div>
+			}
+			if v.Truncated {
+				<p class="chat-note muted">Working from a bounded portion of a long transcript — answers about the end of the video may be incomplete.</p>
+			}
+			if v.Error != "" {
+				<p class="chat-error" role="alert">{ v.Error }</p>
+			}
+			<form
+				class="chat-form"
+				method="post"
+				action={ chatURL(v.VideoID) }
+				hx-post={ string(chatURL(v.VideoID)) }
+				hx-target="#chat-panel"
+				hx-swap="outerHTML"
+			>
+				for _, t := range v.History {
+					<input type="hidden" name="hq" value={ t.Question }/>
+					<input type="hidden" name="ha" value={ t.Answer }/>
+				}
+				<label class="chat-model">
+					Model
+					<select name="model">
+						for _, m := range v.Models {
+							<option value={ m } selected?={ m == v.Selected }>{ m }</option>
+						}
+					</select>
+					<span class="chat-model-hint muted">Switch models to compare answers on the same transcript.</span>
+				</label>
+				<textarea name="question" rows="3" placeholder="Ask a question about this video…" required aria-label="Your question"></textarea>
+				<button type="submit" class="btn">Ask</button>
+				<span class="htmx-indicator chat-thinking">thinking…</span>
+			</form>
+		}
+	</div>
+}
+
 // RegisterPage is the explicit registration step (ADR-012): an authenticated Dex
 // subject with no tapir user picks a display name to create their account.
 // errMsg, when set, reports a validation problem on the prior POST.
diff --git a/internal/web/views_templ.go b/internal/web/views_templ.go
index 54d1027..bb47b81 100644
--- a/internal/web/views_templ.go
+++ b/internal/web/views_templ.go
@@ -1453,8 +1453,9 @@ func noCaptionsCard(r store.SummaryRow) templ.Component {
 }
 
 // DetailPage is the full summary view: text, highlights, takeaways, metadata,
-// and the action button group.
-func DetailPage(r store.SummaryRow) templ.Component {
+// and the action button group. chatEnabled adds the "dig deeper" affordance
+// (ADR-027) — a quiet link into the per-video chat over the stored transcript.
+func DetailPage(r store.SummaryRow, chatEnabled bool) templ.Component {
 	return templruntime.GeneratedTemplate(func(templ_7745c5c3_Input templruntime.GeneratedComponentInput) (templ_7745c5c3_Err error) {
 		templ_7745c5c3_W, ctx := templ_7745c5c3_Input.Writer, templ_7745c5c3_Input.Context
 		if templ_7745c5c3_CtxErr := ctx.Err(); templ_7745c5c3_CtxErr != nil {
@@ -1494,7 +1495,7 @@ func DetailPage(r store.SummaryRow) templ.Component {
 			var templ_7745c5c3_Var61 string
 			templ_7745c5c3_Var61, templ_7745c5c3_Err = templ.JoinStringErrs(displayTitle(r))
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 419, Col: 24}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 420, Col: 24}
 			}
 			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var61))
 			if templ_7745c5c3_Err != nil {
@@ -1512,7 +1513,7 @@ func DetailPage(r store.SummaryRow) templ.Component {
 				var templ_7745c5c3_Var62 string
 				templ_7745c5c3_Var62, templ_7745c5c3_Err = templ.JoinStringErrs(detailMeta(r))
 				if templ_7745c5c3_Err != nil {
-					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 422, Col: 26}
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 423, Col: 26}
 				}
 				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var62))
 				if templ_7745c5c3_Err != nil {
@@ -1541,7 +1542,7 @@ func DetailPage(r store.SummaryRow) templ.Component {
 				var templ_7745c5c3_Var63 string
 				templ_7745c5c3_Var63, templ_7745c5c3_Err = templ.ResolveAttributeValue(url)
 				if templ_7745c5c3_Err != nil {
-					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 431, Col: 15}
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 432, Col: 15}
 				}
 				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var63)
 				if templ_7745c5c3_Err != nil {
@@ -1554,7 +1555,7 @@ func DetailPage(r store.SummaryRow) templ.Component {
 				var templ_7745c5c3_Var64 string
 				templ_7745c5c3_Var64, templ_7745c5c3_Err = templ.ResolveAttributeValue(displayTitle(r))
 				if templ_7745c5c3_Err != nil {
-					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 432, Col: 29}
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 433, Col: 29}
 				}
 				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var64)
 				if templ_7745c5c3_Err != nil {
@@ -1573,7 +1574,7 @@ func DetailPage(r store.SummaryRow) templ.Component {
 				var templ_7745c5c3_Var65 templ.SafeURL
 				templ_7745c5c3_Var65, templ_7745c5c3_Err = templ.JoinURLErrs(externalURL(r.URL))
 				if templ_7745c5c3_Err != nil {
-					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 441, Col: 50}
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 442, Col: 50}
 				}
 				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var65))
 				if templ_7745c5c3_Err != nil {
@@ -1584,82 +1585,101 @@ func DetailPage(r store.SummaryRow) templ.Component {
 					return templ_7745c5c3_Err
 				}
 			}
+			if chatEnabled {
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 132, "  <p class=\"dig-deeper\"><a class=\"btn-secondary\" href=\"")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				var templ_7745c5c3_Var66 templ.SafeURL
+				templ_7745c5c3_Var66, templ_7745c5c3_Err = templ.JoinURLErrs(chatURL(r.VideoID))
+				if templ_7745c5c3_Err != nil {
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 447, Col: 76}
+				}
+				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var66))
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 133, "\">Dig deeper — ask about this video →</a></p>")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+			}
 			templ_7745c5c3_Err = ActionButtons(r.VideoID, actionSet(r.Actions)).Render(ctx, templ_7745c5c3_Buffer)
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
 			if len(r.Takeaways) > 0 {
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 132, "<section><h2>Takeaways</h2><ul>")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 134, "<section><h2>Takeaways</h2><ul>")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
 				for _, t := range r.Takeaways {
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 133, "<li>")
-					if templ_7745c5c3_Err != nil {
-						return templ_7745c5c3_Err
-					}
-					var templ_7745c5c3_Var66 string
-					templ_7745c5c3_Var66, templ_7745c5c3_Err = templ.JoinStringErrs(t)
-					if templ_7745c5c3_Err != nil {
-						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 453, Col: 14}
-					}
-					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var66))
-					if templ_7745c5c3_Err != nil {
-						return templ_7745c5c3_Err
-					}
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 134, "</li>")
-					if templ_7745c5c3_Err != nil {
-						return templ_7745c5c3_Err
-					}
-				}
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 135, "</ul></section>")
-				if templ_7745c5c3_Err != nil {
-					return templ_7745c5c3_Err
-				}
-			}
-			if len(r.Highlights) > 0 {
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 136, "<section><h2>Highlights</h2><ul>")
-				if templ_7745c5c3_Err != nil {
-					return templ_7745c5c3_Err
-				}
-				for _, h := range r.Highlights {
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 137, "<li>")
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 135, "<li>")
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
 					var templ_7745c5c3_Var67 string
-					templ_7745c5c3_Var67, templ_7745c5c3_Err = templ.JoinStringErrs(h)
+					templ_7745c5c3_Var67, templ_7745c5c3_Err = templ.JoinStringErrs(t)
 					if templ_7745c5c3_Err != nil {
-						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 463, Col: 14}
+						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 459, Col: 14}
 					}
 					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var67))
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 138, "</li>")
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 136, "</li>")
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
 				}
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 139, "</ul></section>")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 137, "</ul></section>")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
 			}
-			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 140, "<section><h2>Summary</h2><p class=\"body\">")
+			if len(r.Highlights) > 0 {
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 138, "<section><h2>Highlights</h2><ul>")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				for _, h := range r.Highlights {
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 139, "<li>")
+					if templ_7745c5c3_Err != nil {
+						return templ_7745c5c3_Err
+					}
+					var templ_7745c5c3_Var68 string
+					templ_7745c5c3_Var68, templ_7745c5c3_Err = templ.JoinStringErrs(h)
+					if templ_7745c5c3_Err != nil {
+						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 469, Col: 14}
+					}
+					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var68))
+					if templ_7745c5c3_Err != nil {
+						return templ_7745c5c3_Err
+					}
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 140, "</li>")
+					if templ_7745c5c3_Err != nil {
+						return templ_7745c5c3_Err
+					}
+				}
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 141, "</ul></section>")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+			}
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 142, "<section><h2>Summary</h2><p class=\"body\">")
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
-			var templ_7745c5c3_Var68 string
-			templ_7745c5c3_Var68, templ_7745c5c3_Err = templ.JoinStringErrs(r.Summary)
+			var templ_7745c5c3_Var69 string
+			templ_7745c5c3_Var69, templ_7745c5c3_Err = templ.JoinStringErrs(r.Summary)
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 470, Col: 31}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 476, Col: 31}
 			}
-			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var68))
+			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var69))
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
-			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 141, "</p></section></article>")
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 143, "</p></section></article>")
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
@@ -1673,6 +1693,323 @@ func DetailPage(r store.SummaryRow) templ.Component {
 	})
 }
 
+// ChatPage is the per-video deeper-dive chat (ADR-027): a question/answer surface
+// over the video's ALREADY-STORED transcript. The back link returns to the
+// summary it was entered from. All the interaction lives in chatPanel so the HTMX
+// answer-swap and the no-JS full-page render share one component.
+func ChatPage(v chatView) templ.Component {
+	return templruntime.GeneratedTemplate(func(templ_7745c5c3_Input templruntime.GeneratedComponentInput) (templ_7745c5c3_Err error) {
+		templ_7745c5c3_W, ctx := templ_7745c5c3_Input.Writer, templ_7745c5c3_Input.Context
+		if templ_7745c5c3_CtxErr := ctx.Err(); templ_7745c5c3_CtxErr != nil {
+			return templ_7745c5c3_CtxErr
+		}
+		templ_7745c5c3_Buffer, templ_7745c5c3_IsBuffer := templruntime.GetBuffer(templ_7745c5c3_W)
+		if !templ_7745c5c3_IsBuffer {
+			defer func() {
+				templ_7745c5c3_BufErr := templruntime.ReleaseBuffer(templ_7745c5c3_Buffer)
+				if templ_7745c5c3_Err == nil {
+					templ_7745c5c3_Err = templ_7745c5c3_BufErr
+				}
+			}()
+		}
+		ctx = templ.InitializeContext(ctx)
+		templ_7745c5c3_Var70 := templ.GetChildren(ctx)
+		if templ_7745c5c3_Var70 == nil {
+			templ_7745c5c3_Var70 = templ.NopComponent
+		}
+		ctx = templ.ClearChildren(ctx)
+		templ_7745c5c3_Var71 := templruntime.GeneratedTemplate(func(templ_7745c5c3_Input templruntime.GeneratedComponentInput) (templ_7745c5c3_Err error) {
+			templ_7745c5c3_W, ctx := templ_7745c5c3_Input.Writer, templ_7745c5c3_Input.Context
+			templ_7745c5c3_Buffer, templ_7745c5c3_IsBuffer := templruntime.GetBuffer(templ_7745c5c3_W)
+			if !templ_7745c5c3_IsBuffer {
+				defer func() {
+					templ_7745c5c3_BufErr := templruntime.ReleaseBuffer(templ_7745c5c3_Buffer)
+					if templ_7745c5c3_Err == nil {
+						templ_7745c5c3_Err = templ_7745c5c3_BufErr
+					}
+				}()
+			}
+			ctx = templ.InitializeContext(ctx)
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 144, "<article class=\"detail chat\"><p class=\"back\"><a href=\"")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			var templ_7745c5c3_Var72 templ.SafeURL
+			templ_7745c5c3_Var72, templ_7745c5c3_Err = templ.JoinURLErrs(videoURL(v.VideoID))
+			if templ_7745c5c3_Err != nil {
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 489, Col: 48}
+			}
+			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var72))
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 145, "\">← ")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			var templ_7745c5c3_Var73 string
+			templ_7745c5c3_Var73, templ_7745c5c3_Err = templ.JoinStringErrs(v.Title)
+			if templ_7745c5c3_Err != nil {
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 489, Col: 64}
+			}
+			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var73))
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 146, "</a></p><h1>Ask about this video</h1><p class=\"chat-scope muted\">Answers come only from this video's stored transcript — Tapir never fetches anything new here.</p>")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			templ_7745c5c3_Err = chatPanel(v).Render(ctx, templ_7745c5c3_Buffer)
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 147, "</article>")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			return nil
+		})
+		templ_7745c5c3_Err = Layout("Tapir — Ask — "+v.Title).Render(templ.WithChildren(ctx, templ_7745c5c3_Var71), templ_7745c5c3_Buffer)
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		return nil
+	})
+}
+
+// chatPanel is the conversation + ask form, swapped in place on each answer
+// (HTMX targets #chat-panel, outerHTML). When no transcript is stored it shows the
+// honest "not available" state and no form (ADR-027: never a fetch). The prior
+// turns ride as hidden hq/ha fields so the ephemeral conversation survives the
+// round-trip without any persisted state.
+func chatPanel(v chatView) templ.Component {
+	return templruntime.GeneratedTemplate(func(templ_7745c5c3_Input templruntime.GeneratedComponentInput) (templ_7745c5c3_Err error) {
+		templ_7745c5c3_W, ctx := templ_7745c5c3_Input.Writer, templ_7745c5c3_Input.Context
+		if templ_7745c5c3_CtxErr := ctx.Err(); templ_7745c5c3_CtxErr != nil {
+			return templ_7745c5c3_CtxErr
+		}
+		templ_7745c5c3_Buffer, templ_7745c5c3_IsBuffer := templruntime.GetBuffer(templ_7745c5c3_W)
+		if !templ_7745c5c3_IsBuffer {
+			defer func() {
+				templ_7745c5c3_BufErr := templruntime.ReleaseBuffer(templ_7745c5c3_Buffer)
+				if templ_7745c5c3_Err == nil {
+					templ_7745c5c3_Err = templ_7745c5c3_BufErr
+				}
+			}()
+		}
+		ctx = templ.InitializeContext(ctx)
+		templ_7745c5c3_Var74 := templ.GetChildren(ctx)
+		if templ_7745c5c3_Var74 == nil {
+			templ_7745c5c3_Var74 = templ.NopComponent
+		}
+		ctx = templ.ClearChildren(ctx)
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 148, "<div id=\"chat-panel\" class=\"chat-panel\">")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		if !v.Available {
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 149, "<p class=\"chat-unavailable muted\">Chat isn't available for this video — its transcript isn't stored, and chat never fetches new captions. Summarize the video first to store its transcript.</p>")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+		} else {
+			if len(v.History) > 0 {
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 150, "<div class=\"chat-log\">")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				for _, t := range v.History {
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 151, "<div class=\"chat-turn chat-q\"><p>")
+					if templ_7745c5c3_Err != nil {
+						return templ_7745c5c3_Err
+					}
+					var templ_7745c5c3_Var75 string
+					templ_7745c5c3_Var75, templ_7745c5c3_Err = templ.JoinStringErrs(t.Question)
+					if templ_7745c5c3_Err != nil {
+						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 510, Col: 51}
+					}
+					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var75))
+					if templ_7745c5c3_Err != nil {
+						return templ_7745c5c3_Err
+					}
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 152, "</p></div><div class=\"chat-turn chat-a\"><p class=\"body\">")
+					if templ_7745c5c3_Err != nil {
+						return templ_7745c5c3_Err
+					}
+					var templ_7745c5c3_Var76 string
+					templ_7745c5c3_Var76, templ_7745c5c3_Err = templ.JoinStringErrs(t.Answer)
+					if templ_7745c5c3_Err != nil {
+						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 511, Col: 62}
+					}
+					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var76))
+					if templ_7745c5c3_Err != nil {
+						return templ_7745c5c3_Err
+					}
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 153, "</p></div>")
+					if templ_7745c5c3_Err != nil {
+						return templ_7745c5c3_Err
+					}
+				}
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 154, "</div>")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+			}
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 155, " ")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			if v.Truncated {
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 156, "<p class=\"chat-note muted\">Working from a bounded portion of a long transcript — answers about the end of the video may be incomplete.</p>")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+			}
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 157, " ")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			if v.Error != "" {
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 158, "<p class=\"chat-error\" role=\"alert\">")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				var templ_7745c5c3_Var77 string
+				templ_7745c5c3_Var77, templ_7745c5c3_Err = templ.JoinStringErrs(v.Error)
+				if templ_7745c5c3_Err != nil {
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 519, Col: 48}
+				}
+				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var77))
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 159, "</p>")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+			}
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 160, " <form class=\"chat-form\" method=\"post\" action=\"")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			var templ_7745c5c3_Var78 templ.SafeURL
+			templ_7745c5c3_Var78, templ_7745c5c3_Err = templ.JoinURLErrs(chatURL(v.VideoID))
+			if templ_7745c5c3_Err != nil {
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 524, Col: 31}
+			}
+			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var78))
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 161, "\" hx-post=\"")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			var templ_7745c5c3_Var79 string
+			templ_7745c5c3_Var79, templ_7745c5c3_Err = templ.ResolveAttributeValue(string(chatURL(v.VideoID)))
+			if templ_7745c5c3_Err != nil {
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 525, Col: 40}
+			}
+			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var79)
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 162, "\" hx-target=\"#chat-panel\" hx-swap=\"outerHTML\">")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			for _, t := range v.History {
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 163, "<input type=\"hidden\" name=\"hq\" value=\"")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				var templ_7745c5c3_Var80 string
+				templ_7745c5c3_Var80, templ_7745c5c3_Err = templ.ResolveAttributeValue(t.Question)
+				if templ_7745c5c3_Err != nil {
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 530, Col: 54}
+				}
+				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var80)
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 164, "\"> <input type=\"hidden\" name=\"ha\" value=\"")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				var templ_7745c5c3_Var81 string
+				templ_7745c5c3_Var81, templ_7745c5c3_Err = templ.ResolveAttributeValue(t.Answer)
+				if templ_7745c5c3_Err != nil {
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 531, Col: 52}
+				}
+				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var81)
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 165, "\"> ")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+			}
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 166, "<label class=\"chat-model\">Model <select name=\"model\">")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+			for _, m := range v.Models {
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 167, "<option value=\"")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				var templ_7745c5c3_Var82 string
+				templ_7745c5c3_Var82, templ_7745c5c3_Err = templ.ResolveAttributeValue(m)
+				if templ_7745c5c3_Err != nil {
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 537, Col: 24}
+				}
+				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var82)
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 168, "\"")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				if m == v.Selected {
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 169, " selected")
+					if templ_7745c5c3_Err != nil {
+						return templ_7745c5c3_Err
+					}
+				}
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 170, ">")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				var templ_7745c5c3_Var83 string
+				templ_7745c5c3_Var83, templ_7745c5c3_Err = templ.JoinStringErrs(m)
+				if templ_7745c5c3_Err != nil {
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 537, Col: 60}
+				}
+				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var83))
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 171, "</option>")
+				if templ_7745c5c3_Err != nil {
+					return templ_7745c5c3_Err
+				}
+			}
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 172, "</select> <span class=\"chat-model-hint muted\">Switch models to compare answers on the same transcript.</span></label> <textarea name=\"question\" rows=\"3\" placeholder=\"Ask a question about this video…\" required aria-label=\"Your question\"></textarea> <button type=\"submit\" class=\"btn\">Ask</button> <span class=\"htmx-indicator chat-thinking\">thinking…</span></form>")
+			if templ_7745c5c3_Err != nil {
+				return templ_7745c5c3_Err
+			}
+		}
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 173, "</div>")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		return nil
+	})
+}
+
 // RegisterPage is the explicit registration step (ADR-012): an authenticated Dex
 // subject with no tapir user picks a display name to create their account.
 // errMsg, when set, reports a validation problem on the prior POST.
@@ -1692,12 +2029,12 @@ func RegisterPage(email, errMsg string) templ.Component {
 			}()
 		}
 		ctx = templ.InitializeContext(ctx)
-		templ_7745c5c3_Var69 := templ.GetChildren(ctx)
-		if templ_7745c5c3_Var69 == nil {
-			templ_7745c5c3_Var69 = templ.NopComponent
+		templ_7745c5c3_Var84 := templ.GetChildren(ctx)
+		if templ_7745c5c3_Var84 == nil {
+			templ_7745c5c3_Var84 = templ.NopComponent
 		}
 		ctx = templ.ClearChildren(ctx)
-		templ_7745c5c3_Var70 := templruntime.GeneratedTemplate(func(templ_7745c5c3_Input templruntime.GeneratedComponentInput) (templ_7745c5c3_Err error) {
+		templ_7745c5c3_Var85 := templruntime.GeneratedTemplate(func(templ_7745c5c3_Input templruntime.GeneratedComponentInput) (templ_7745c5c3_Err error) {
 			templ_7745c5c3_W, ctx := templ_7745c5c3_Input.Writer, templ_7745c5c3_Input.Context
 			templ_7745c5c3_Buffer, templ_7745c5c3_IsBuffer := templruntime.GetBuffer(templ_7745c5c3_W)
 			if !templ_7745c5c3_IsBuffer {
@@ -1709,59 +2046,59 @@ func RegisterPage(email, errMsg string) templ.Component {
 				}()
 			}
 			ctx = templ.InitializeContext(ctx)
-			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 142, "<article class=\"register\"><h1>Complete your registration</h1>")
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 174, "<article class=\"register\"><h1>Complete your registration</h1>")
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
 			if email != "" {
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 143, "<p class=\"meta\">Signed in as ")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 175, "<p class=\"meta\">Signed in as ")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
-				var templ_7745c5c3_Var71 string
-				templ_7745c5c3_Var71, templ_7745c5c3_Err = templ.JoinStringErrs(email)
+				var templ_7745c5c3_Var86 string
+				templ_7745c5c3_Var86, templ_7745c5c3_Err = templ.JoinStringErrs(email)
 				if templ_7745c5c3_Err != nil {
-					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 484, Col: 40}
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 558, Col: 40}
 				}
-				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var71))
+				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var86))
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 144, ".</p>")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 176, ".</p>")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
 			}
-			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 145, "<p>Choose a display name to finish setting up your Tapir account.</p>")
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 177, "<p>Choose a display name to finish setting up your Tapir account.</p>")
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
 			if errMsg != "" {
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 146, "<p class=\"error\" role=\"alert\">")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 178, "<p class=\"error\" role=\"alert\">")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
-				var templ_7745c5c3_Var72 string
-				templ_7745c5c3_Var72, templ_7745c5c3_Err = templ.JoinStringErrs(errMsg)
+				var templ_7745c5c3_Var87 string
+				templ_7745c5c3_Var87, templ_7745c5c3_Err = templ.JoinStringErrs(errMsg)
 				if templ_7745c5c3_Err != nil {
-					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 488, Col: 42}
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 562, Col: 42}
 				}
-				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var72))
+				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var87))
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 147, "</p>")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 179, "</p>")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
 			}
-			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 148, "<form method=\"post\" action=\"/register\" class=\"register-form\"><label>Display name <input type=\"text\" name=\"display_name\" required autofocus></label> <button type=\"submit\" class=\"btn\">Register</button></form></article>")
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 180, "<form method=\"post\" action=\"/register\" class=\"register-form\"><label>Display name <input type=\"text\" name=\"display_name\" required autofocus></label> <button type=\"submit\" class=\"btn\">Register</button></form></article>")
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
 			return nil
 		})
-		templ_7745c5c3_Err = Layout("Tapir — Register").Render(templ.WithChildren(ctx, templ_7745c5c3_Var70), templ_7745c5c3_Buffer)
+		templ_7745c5c3_Err = Layout("Tapir — Register").Render(templ.WithChildren(ctx, templ_7745c5c3_Var85), templ_7745c5c3_Buffer)
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -1789,12 +2126,12 @@ func AccountPage(displayName, email string, conns []store.Connection, autoSummar
 			}()
 		}
 		ctx = templ.InitializeContext(ctx)
-		templ_7745c5c3_Var73 := templ.GetChildren(ctx)
-		if templ_7745c5c3_Var73 == nil {
-			templ_7745c5c3_Var73 = templ.NopComponent
+		templ_7745c5c3_Var88 := templ.GetChildren(ctx)
+		if templ_7745c5c3_Var88 == nil {
+			templ_7745c5c3_Var88 = templ.NopComponent
 		}
 		ctx = templ.ClearChildren(ctx)
-		templ_7745c5c3_Var74 := templruntime.GeneratedTemplate(func(templ_7745c5c3_Input templruntime.GeneratedComponentInput) (templ_7745c5c3_Err error) {
+		templ_7745c5c3_Var89 := templruntime.GeneratedTemplate(func(templ_7745c5c3_Input templruntime.GeneratedComponentInput) (templ_7745c5c3_Err error) {
 			templ_7745c5c3_W, ctx := templ_7745c5c3_Input.Writer, templ_7745c5c3_Input.Context
 			templ_7745c5c3_Buffer, templ_7745c5c3_IsBuffer := templruntime.GetBuffer(templ_7745c5c3_W)
 			if !templ_7745c5c3_IsBuffer {
@@ -1810,43 +2147,43 @@ func AccountPage(displayName, email string, conns []store.Connection, autoSummar
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
-			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 149, " <article class=\"account\"><h1>Account</h1><dl class=\"account-meta\"><dt>Display name</dt><dd>")
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 181, " <article class=\"account\"><h1>Account</h1><dl class=\"account-meta\"><dt>Display name</dt><dd>")
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
-			var templ_7745c5c3_Var75 string
-			templ_7745c5c3_Var75, templ_7745c5c3_Err = templ.JoinStringErrs(displayNameOr(displayName))
+			var templ_7745c5c3_Var90 string
+			templ_7745c5c3_Var90, templ_7745c5c3_Err = templ.JoinStringErrs(displayNameOr(displayName))
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 512, Col: 36}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 586, Col: 36}
 			}
-			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var75))
+			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var90))
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
-			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 150, "</dd>")
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 182, "</dd>")
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
 			if email != "" {
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 151, "<dt>Signed in as</dt><dd>")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 183, "<dt>Signed in as</dt><dd>")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
-				var templ_7745c5c3_Var76 string
-				templ_7745c5c3_Var76, templ_7745c5c3_Err = templ.JoinStringErrs(email)
+				var templ_7745c5c3_Var91 string
+				templ_7745c5c3_Var91, templ_7745c5c3_Err = templ.JoinStringErrs(email)
 				if templ_7745c5c3_Err != nil {
-					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 515, Col: 16}
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 589, Col: 16}
 				}
-				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var76))
+				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var91))
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 152, "</dd>")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 184, "</dd>")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
 			}
-			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 153, "</dl><section><h2>Summarization</h2><p class=\"muted\">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>")
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 185, "</dl><section><h2>Summarization</h2><p class=\"muted\">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>")
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
@@ -1854,178 +2191,178 @@ func AccountPage(displayName, email string, conns []store.Connection, autoSummar
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
-			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 154, "</section>")
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 186, "</section>")
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
 			if len(channelErrors) > 0 {
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 155, "<section class=\"channel-errors\"><h2>Unavailable channels</h2><p class=\"muted\">")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 187, "<section class=\"channel-errors\"><h2>Unavailable channels</h2><p class=\"muted\">")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
-				var templ_7745c5c3_Var77 string
-				templ_7745c5c3_Var77, templ_7745c5c3_Err = templ.JoinStringErrs(fmt.Sprintf("%d channel(s) returned errors on the last discovery pass.", len(channelErrors)))
+				var templ_7745c5c3_Var92 string
+				templ_7745c5c3_Var92, templ_7745c5c3_Err = templ.JoinStringErrs(fmt.Sprintf("%d channel(s) returned errors on the last discovery pass.", len(channelErrors)))
 				if templ_7745c5c3_Err != nil {
-					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 532, Col: 100}
+					return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 606, Col: 100}
 				}
-				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var77))
+				_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var92))
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 156, " These may have been deleted or made private on YouTube.</p><ul class=\"channel-error-list\">")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 188, " These may have been deleted or made private on YouTube.</p><ul class=\"channel-error-list\">")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
 				for _, ce := range channelErrors {
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 157, "<li><span class=\"channel-error-name\">")
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 189, "<li><span class=\"channel-error-name\">")
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					var templ_7745c5c3_Var78 string
-					templ_7745c5c3_Var78, templ_7745c5c3_Err = templ.JoinStringErrs(ce.ChannelName)
+					var templ_7745c5c3_Var93 string
+					templ_7745c5c3_Var93, templ_7745c5c3_Err = templ.JoinStringErrs(ce.ChannelName)
 					if templ_7745c5c3_Err != nil {
-						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 538, Col: 57}
+						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 612, Col: 57}
 					}
-					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var78))
+					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var93))
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 158, "</span> <span class=\"chip chip-warn\">unavailable</span> <span class=\"muted channel-error-since\">since ")
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 190, "</span> <span class=\"chip chip-warn\">unavailable</span> <span class=\"muted channel-error-since\">since ")
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					var templ_7745c5c3_Var79 string
-					templ_7745c5c3_Var79, templ_7745c5c3_Err = templ.JoinStringErrs(ce.FirstSeen.Format("2006-01-02"))
+					var templ_7745c5c3_Var94 string
+					templ_7745c5c3_Var94, templ_7745c5c3_Err = templ.JoinStringErrs(ce.FirstSeen.Format("2006-01-02"))
 					if templ_7745c5c3_Err != nil {
-						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 540, Col: 89}
+						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 614, Col: 89}
 					}
-					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var79))
+					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var94))
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 159, "</span></li>")
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 191, "</span></li>")
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
 				}
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 160, "</ul></section>")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 192, "</ul></section>")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
 			}
-			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 161, "<section><h2>Connected accounts</h2>")
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 193, "<section><h2>Connected accounts</h2>")
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
 			if len(conns) == 0 {
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 162, "<p class=\"muted\">No connected video accounts yet.</p>")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 194, "<p class=\"muted\">No connected video accounts yet.</p>")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
 			} else {
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 163, "<ul class=\"conn-list\">")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 195, "<ul class=\"conn-list\">")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
 				for _, c := range conns {
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 164, "<li class=\"conn\"><div class=\"conn-main\"><span class=\"conn-provider\">")
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 196, "<li class=\"conn\"><div class=\"conn-main\"><span class=\"conn-provider\">")
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					var templ_7745c5c3_Var80 string
-					templ_7745c5c3_Var80, templ_7745c5c3_Err = templ.JoinStringErrs(providerLabel(c.Provider))
+					var templ_7745c5c3_Var95 string
+					templ_7745c5c3_Var95, templ_7745c5c3_Err = templ.JoinStringErrs(providerLabel(c.Provider))
 					if templ_7745c5c3_Err != nil {
-						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 555, Col: 64}
+						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 629, Col: 64}
 					}
-					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var80))
+					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var95))
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 165, "</span> ")
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 197, "</span> ")
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
 					if c.ProviderAccount != "" {
-						templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 166, "<span class=\"muted\">")
+						templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 198, "<span class=\"muted\">")
 						if templ_7745c5c3_Err != nil {
 							return templ_7745c5c3_Err
 						}
-						var templ_7745c5c3_Var81 string
-						templ_7745c5c3_Var81, templ_7745c5c3_Err = templ.JoinStringErrs(c.ProviderAccount)
+						var templ_7745c5c3_Var96 string
+						templ_7745c5c3_Var96, templ_7745c5c3_Err = templ.JoinStringErrs(c.ProviderAccount)
 						if templ_7745c5c3_Err != nil {
-							return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 557, Col: 49}
+							return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 631, Col: 49}
 						}
-						_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var81))
+						_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var96))
 						if templ_7745c5c3_Err != nil {
 							return templ_7745c5c3_Err
 						}
-						templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 167, "</span> ")
+						templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 199, "</span> ")
 						if templ_7745c5c3_Err != nil {
 							return templ_7745c5c3_Err
 						}
 					}
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 168, "<span class=\"chip\">")
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 200, "<span class=\"chip\">")
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					var templ_7745c5c3_Var82 string
-					templ_7745c5c3_Var82, templ_7745c5c3_Err = templ.JoinStringErrs(c.Status)
+					var templ_7745c5c3_Var97 string
+					templ_7745c5c3_Var97, templ_7745c5c3_Err = templ.JoinStringErrs(c.Status)
 					if templ_7745c5c3_Err != nil {
-						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 559, Col: 38}
+						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 633, Col: 38}
 					}
-					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var82))
+					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var97))
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 169, "</span></div><div class=\"conn-meta muted\">connected ")
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 201, "</span></div><div class=\"conn-meta muted\">connected ")
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					var templ_7745c5c3_Var83 string
-					templ_7745c5c3_Var83, templ_7745c5c3_Err = templ.JoinStringErrs(c.ConnectedAt.Format("2006-01-02"))
+					var templ_7745c5c3_Var98 string
+					templ_7745c5c3_Var98, templ_7745c5c3_Err = templ.JoinStringErrs(c.ConnectedAt.Format("2006-01-02"))
 					if templ_7745c5c3_Err != nil {
-						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 561, Col: 83}
+						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 635, Col: 83}
 					}
-					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var83))
+					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var98))
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 170, "</div><form method=\"post\" action=\"")
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 202, "</div><form method=\"post\" action=\"")
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					var templ_7745c5c3_Var84 templ.SafeURL
-					templ_7745c5c3_Var84, templ_7745c5c3_Err = templ.JoinURLErrs(disconnectURL(c.Provider))
+					var templ_7745c5c3_Var99 templ.SafeURL
+					templ_7745c5c3_Var99, templ_7745c5c3_Err = templ.JoinURLErrs(disconnectURL(c.Provider))
 					if templ_7745c5c3_Err != nil {
-						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 562, Col: 62}
+						return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 636, Col: 62}
 					}
-					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var84))
+					_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var99))
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
-					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 171, "\"><button type=\"submit\" class=\"btn-secondary\">Disconnect</button></form></li>")
+					templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 203, "\"><button type=\"submit\" class=\"btn-secondary\">Disconnect</button></form></li>")
 					if templ_7745c5c3_Err != nil {
 						return templ_7745c5c3_Err
 					}
 				}
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 172, "</ul>")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 204, "</ul>")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
 			}
 			if !hasYouTube(conns) {
-				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 173, "<p><a class=\"btn\" href=\"/oauth/youtube/connect\">Connect YouTube</a></p>")
+				templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 205, "<p><a class=\"btn\" href=\"/oauth/youtube/connect\">Connect YouTube</a></p>")
 				if templ_7745c5c3_Err != nil {
 					return templ_7745c5c3_Err
 				}
 			}
-			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 174, "</section><section class=\"danger-zone\"><h2>Delete account</h2><p class=\"muted\">Permanently remove your Tapir account and all of its data — summaries, watch/skip/save actions, and connected accounts. This cannot be undone.</p><details class=\"confirm-delete\"><summary class=\"btn-danger\">Delete account…</summary><div class=\"confirm-body\"><p>This permanently deletes your account and all data. Are you sure?</p><form method=\"post\" action=\"/account/delete\"><button type=\"submit\" class=\"btn-danger\">Yes, permanently delete my account</button></form></div></details></section></article>")
+			templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 206, "</section><section class=\"danger-zone\"><h2>Delete account</h2><p class=\"muted\">Permanently remove your Tapir account and all of its data — summaries, watch/skip/save actions, and connected accounts. This cannot be undone.</p><details class=\"confirm-delete\"><summary class=\"btn-danger\">Delete account…</summary><div class=\"confirm-body\"><p>This permanently deletes your account and all data. Are you sure?</p><form method=\"post\" action=\"/account/delete\"><button type=\"submit\" class=\"btn-danger\">Yes, permanently delete my account</button></form></div></details></section></article>")
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
 			return nil
 		})
-		templ_7745c5c3_Err = Layout("Tapir — Account").Render(templ.WithChildren(ctx, templ_7745c5c3_Var74), templ_7745c5c3_Buffer)
+		templ_7745c5c3_Err = Layout("Tapir — Account").Render(templ.WithChildren(ctx, templ_7745c5c3_Var89), templ_7745c5c3_Buffer)
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -2053,51 +2390,51 @@ func summarizeModeControl(auto bool) templ.Component {
 			}()
 		}
 		ctx = templ.InitializeContext(ctx)
-		templ_7745c5c3_Var85 := templ.GetChildren(ctx)
-		if templ_7745c5c3_Var85 == nil {
-			templ_7745c5c3_Var85 = templ.NopComponent
+		templ_7745c5c3_Var100 := templ.GetChildren(ctx)
+		if templ_7745c5c3_Var100 == nil {
+			templ_7745c5c3_Var100 = templ.NopComponent
 		}
 		ctx = templ.ClearChildren(ctx)
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 175, "<div id=\"summarize-mode\" class=\"summarize-mode\"><p>Current mode: <strong>")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 207, "<div id=\"summarize-mode\" class=\"summarize-mode\"><p>Current mode: <strong>")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		var templ_7745c5c3_Var86 string
-		templ_7745c5c3_Var86, templ_7745c5c3_Err = templ.JoinStringErrs(summarizeModeLabel(auto))
+		var templ_7745c5c3_Var101 string
+		templ_7745c5c3_Var101, templ_7745c5c3_Err = templ.JoinStringErrs(summarizeModeLabel(auto))
 		if templ_7745c5c3_Err != nil {
-			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 599, Col: 53}
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 673, Col: 53}
 		}
-		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var86))
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var101))
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 176, "</strong></p><form method=\"post\" action=\"/account/summarize-mode\" hx-post=\"/account/summarize-mode\" hx-target=\"#summarize-mode\" hx-swap=\"outerHTML\"><input type=\"hidden\" name=\"enabled\" value=\"")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 208, "</strong></p><form method=\"post\" action=\"/account/summarize-mode\" hx-post=\"/account/summarize-mode\" hx-target=\"#summarize-mode\" hx-swap=\"outerHTML\"><input type=\"hidden\" name=\"enabled\" value=\"")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		var templ_7745c5c3_Var87 string
-		templ_7745c5c3_Var87, templ_7745c5c3_Err = templ.ResolveAttributeValue(boolStr(!auto))
+		var templ_7745c5c3_Var102 string
+		templ_7745c5c3_Var102, templ_7745c5c3_Err = templ.ResolveAttributeValue(boolStr(!auto))
 		if templ_7745c5c3_Err != nil {
-			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 607, Col: 61}
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 681, Col: 61}
 		}
-		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var87)
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var102)
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 177, "\"> <button type=\"submit\" class=\"btn-secondary\">")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 209, "\"> <button type=\"submit\" class=\"btn-secondary\">")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		var templ_7745c5c3_Var88 string
-		templ_7745c5c3_Var88, templ_7745c5c3_Err = templ.JoinStringErrs(summarizeModeToggleLabel(auto))
+		var templ_7745c5c3_Var103 string
+		templ_7745c5c3_Var103, templ_7745c5c3_Err = templ.JoinStringErrs(summarizeModeToggleLabel(auto))
 		if templ_7745c5c3_Err != nil {
-			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 608, Col: 79}
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 682, Col: 79}
 		}
-		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var88))
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var103))
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 178, "</button></form></div>")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 210, "</button></form></div>")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -2125,38 +2462,38 @@ func ActionButtons(videoID string, active map[string]bool) templ.Component {
 			}()
 		}
 		ctx = templ.InitializeContext(ctx)
-		templ_7745c5c3_Var89 := templ.GetChildren(ctx)
-		if templ_7745c5c3_Var89 == nil {
-			templ_7745c5c3_Var89 = templ.NopComponent
+		templ_7745c5c3_Var104 := templ.GetChildren(ctx)
+		if templ_7745c5c3_Var104 == nil {
+			templ_7745c5c3_Var104 = templ.NopComponent
 		}
 		ctx = templ.ClearChildren(ctx)
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 179, "<form id=\"action-buttons\" class=\"actions\" method=\"post\" action=\"")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 211, "<form id=\"action-buttons\" class=\"actions\" method=\"post\" action=\"")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		var templ_7745c5c3_Var90 templ.SafeURL
-		templ_7745c5c3_Var90, templ_7745c5c3_Err = templ.JoinURLErrs(actionURL(videoID))
+		var templ_7745c5c3_Var105 templ.SafeURL
+		templ_7745c5c3_Var105, templ_7745c5c3_Err = templ.JoinURLErrs(actionURL(videoID))
 		if templ_7745c5c3_Err != nil {
-			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 622, Col: 29}
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 696, Col: 29}
 		}
-		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var90))
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var105))
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 180, "\" hx-post=\"")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 212, "\" hx-post=\"")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		var templ_7745c5c3_Var91 string
-		templ_7745c5c3_Var91, templ_7745c5c3_Err = templ.ResolveAttributeValue(string(actionURL(videoID)))
+		var templ_7745c5c3_Var106 string
+		templ_7745c5c3_Var106, templ_7745c5c3_Err = templ.ResolveAttributeValue(string(actionURL(videoID)))
 		if templ_7745c5c3_Err != nil {
-			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 623, Col: 38}
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 697, Col: 38}
 		}
-		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var91)
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var106)
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 181, "\" hx-target=\"#action-buttons\" hx-swap=\"outerHTML\"><span class=\"segmented\" role=\"group\" aria-label=\"Watched or skipped\">")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 213, "\" hx-target=\"#action-buttons\" hx-swap=\"outerHTML\"><span class=\"segmented\" role=\"group\" aria-label=\"Watched or skipped\">")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -2168,7 +2505,7 @@ func ActionButtons(videoID string, active map[string]bool) templ.Component {
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 182, "</span>")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 214, "</span>")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -2176,7 +2513,7 @@ func ActionButtons(videoID string, active map[string]bool) templ.Component {
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 183, "</form>")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 215, "</form>")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -2202,81 +2539,81 @@ func actionButton(verb string, isActive bool) templ.Component {
 			}()
 		}
 		ctx = templ.InitializeContext(ctx)
-		templ_7745c5c3_Var92 := templ.GetChildren(ctx)
-		if templ_7745c5c3_Var92 == nil {
-			templ_7745c5c3_Var92 = templ.NopComponent
+		templ_7745c5c3_Var107 := templ.GetChildren(ctx)
+		if templ_7745c5c3_Var107 == nil {
+			templ_7745c5c3_Var107 = templ.NopComponent
 		}
 		ctx = templ.ClearChildren(ctx)
-		var templ_7745c5c3_Var93 = []any{"action", templ.KV("active", isActive)}
-		templ_7745c5c3_Err = templ.RenderCSSItems(ctx, templ_7745c5c3_Buffer, templ_7745c5c3_Var93...)
+		var templ_7745c5c3_Var108 = []any{"action", templ.KV("active", isActive)}
+		templ_7745c5c3_Err = templ.RenderCSSItems(ctx, templ_7745c5c3_Buffer, templ_7745c5c3_Var108...)
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 184, "<button type=\"submit\" name=\"action\" value=\"")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 216, "<button type=\"submit\" name=\"action\" value=\"")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		var templ_7745c5c3_Var94 string
-		templ_7745c5c3_Var94, templ_7745c5c3_Err = templ.ResolveAttributeValue(verb)
+		var templ_7745c5c3_Var109 string
+		templ_7745c5c3_Var109, templ_7745c5c3_Err = templ.ResolveAttributeValue(verb)
 		if templ_7745c5c3_Err != nil {
-			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 644, Col: 14}
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 718, Col: 14}
 		}
-		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var94)
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var109)
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 185, "\" class=\"")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 217, "\" class=\"")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		var templ_7745c5c3_Var95 string
-		templ_7745c5c3_Var95, templ_7745c5c3_Err = templ.ResolveAttributeValue(templ.CSSClasses(templ_7745c5c3_Var93).String())
+		var templ_7745c5c3_Var110 string
+		templ_7745c5c3_Var110, templ_7745c5c3_Err = templ.ResolveAttributeValue(templ.CSSClasses(templ_7745c5c3_Var108).String())
 		if templ_7745c5c3_Err != nil {
 			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 1, Col: 0}
 		}
-		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var95)
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var110)
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 186, "\" aria-pressed=\"")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 218, "\" aria-pressed=\"")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		var templ_7745c5c3_Var96 string
-		templ_7745c5c3_Var96, templ_7745c5c3_Err = templ.ResolveAttributeValue(ariaPressed(isActive))
+		var templ_7745c5c3_Var111 string
+		templ_7745c5c3_Var111, templ_7745c5c3_Err = templ.ResolveAttributeValue(ariaPressed(isActive))
 		if templ_7745c5c3_Err != nil {
-			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 646, Col: 38}
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 720, Col: 38}
 		}
-		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var96)
+		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var111)
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 187, "\">")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 219, "\">")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
 		if isActive {
-			var templ_7745c5c3_Var97 string
-			templ_7745c5c3_Var97, templ_7745c5c3_Err = templ.JoinStringErrs("✓ " + actionLabel(verb))
+			var templ_7745c5c3_Var112 string
+			templ_7745c5c3_Var112, templ_7745c5c3_Err = templ.JoinStringErrs("✓ " + actionLabel(verb))
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 649, Col: 31}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 723, Col: 31}
 			}
-			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var97))
+			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var112))
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
 		} else {
-			var templ_7745c5c3_Var98 string
-			templ_7745c5c3_Var98, templ_7745c5c3_Err = templ.JoinStringErrs(actionLabel(verb))
+			var templ_7745c5c3_Var113 string
+			templ_7745c5c3_Var113, templ_7745c5c3_Err = templ.JoinStringErrs(actionLabel(verb))
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 651, Col: 22}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `internal/web/views.templ`, Line: 725, Col: 22}
 			}
-			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var98))
+			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var113))
 			if templ_7745c5c3_Err != nil {
 				return templ_7745c5c3_Err
 			}
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 188, "</button>")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 220, "</button>")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
diff --git a/test/acceptance/scenario_coverage_test.go b/test/acceptance/scenario_coverage_test.go
index 141131f..099f78b 100644
--- a/test/acceptance/scenario_coverage_test.go
+++ b/test/acceptance/scenario_coverage_test.go
@@ -63,6 +63,18 @@ var scenarioCoverage = map[string]string{
 	"A returning subject passes straight through":                               "TestRegisteredSubjectPassesThrough",
 	"Deleting an account removes only my data and leaves other users untouched": "TestDeleteAccountWipesDataAndSecretsAndLogsOut",
 
+	// chat_transcript.feature (ADR-027)
+	"A summary view offers a deeper-dive into the video":         "TestChatEntryAffordanceOnSummaryView",
+	"Ask a question answered from the stored transcript":         "TestChatAnswersFromStoredTranscriptWithoutAnyFetch",
+	"Chat never fetches captions or reaches YouTube":             "TestChatAnswersFromStoredTranscriptWithoutAnyFetch",
+	"A video with no stored transcript offers no chat":           "TestChatUnavailableWhenNoStoredTranscript",
+	"The default model is the summary's model and is switchable": "TestChatModelSwitcherDefaultAndSwitch",
+	"Switching models re-runs against the same transcript":       "TestChatModelSwitcherDefaultAndSwitch",
+	"The cloud model is hidden when cloud is disabled":           "TestChatCloudModelAbsentWhenDisabled",
+	"A long transcript is bounded and the chat says so":          "TestChatTruncationNoteShown",
+	"A multi-turn conversation is ephemeral":                     "TestChatMultiTurnHistoryIsEphemeral",
+	"Chat is reachable only from my own summary view":            "TestChatOnlyReachableForOwnVideo",
+
 	// summarize_new_video.feature
 	"A subscribed channel posts a video that has captions":         "TestSubscribedVideoWithCaptionsIsSummarizedAndDelivered",
 	"A subscribed channel posts a video with no usable transcript": "TestVideoWithNoTranscriptIsSkipped",