feat(tui): rename nav Sessions→Debates and Chats→Conversations

[pedrofuentes]

User-facing nav labels, breadcrumbs, and list titles renamed: Sessions→Debates and Chats→Conversations. Route paths (/sessions, /chats), nav ids (sessions, chats), and telemetry labels are unchanged. Phase 10 TUI overhaul — PR-22 (user-approved).

[pedrofuentes]

Status: APPROVED

Sentinel Review Report

Ref: feature/tui-nav-relabel → main
Report ID: sentinel-1753-58e6abb-20260626
Reviewed SHA: 58e6abb
Sentinel ruleset: v1
Reviewed at: 2026-06-26T09:45:18-07:00
Mode: standard
Review depth: Tier 2 (full)
Required action: MERGE

Phase 0 — Ref Binding

• HEAD verified: ✅ git rev-parse HEAD → 58e6abbfb28b91a9a1f3219df695c4d8b2acc119.
• Branch verified: ✅ feature/tui-nav-relabel.
• Base binding: ✅ specified base merge-base 80d580687e5ba1e634d2f349fe21fbbc5fe55abb; git log origin/main..HEAD showed only 1407c68 → f5eb713 → 58e6abb for this PR.

Phase 1 — TDD / Test Evidence

• Tests exist & meaningful: ✅ Tests assert routeToBreadcrumb('/sessions') → Debates, /chats → Conversations, session/chat entity sub-routes, expanded left-nav labels, Sessions/Chats loaded titles, and Chats empty text (routes.test.ts:20-40, app-router.test.tsx:807-848, chats-screen.test.tsx:75-85,167-208, sessions-screen.test.tsx:151-175).
• Test-first history verified: ✅ 1407c68 test(tui): ... precedes f5eb713 feat(tui): ...; 58e6abb docs(tui): ... is TDD-exempt.
• Commit scope verified: ✅ git show --name-status f5eb713 changed only source files (AppRouter.tsx, routes.ts, ChatsScreen.tsx, SessionsScreen.tsx); git show --name-status 58e6abb changed only docs/designs/interactive-tui.md.
• RED verified: ✅ Checking out 1407c68 and running the four affected TUI test files failed as expected: Test Files 4 failed (4), Tests 9 failed | 41 passed (50), with assertions expecting Debates/Conversations but receiving Sessions/Chats.
• Full relevant suite green on SHA: ✅ cd packages/cli && npx --yes pnpm@10.30.1 exec vitest run tests/unit/tui → Test Files 94 passed (94), Tests 880 passed (880).
• Lint green: ✅ npx --yes pnpm@10.30.1 lint exited 0.
• Typecheck green: ✅ npx --yes pnpm@10.30.1 typecheck exited 0.
• Coverage: N/A (no coverage threshold enforcement output requested; Sentinel template threshold remains unset for this run).

Phase 1.5 — Fast-path Evaluation

🔴 count: 0 | LOC: 30 non-test/non-lockfile changed (≤150: Y) | Security paths: Y (terminal/UI render surfaces touched) | New deps: N | Commit types qualify: N (feat present)
→ Fast-path eligible: NO → Phase 2

Phase 2 — Execution Log

Dim	Tool Call	Agent ID / Ref	Status
Quick scan	task(agent_type="explore", name="sentinel-quick-scan")	N/A (Copilot CLI synchronous task call returned no ID)	✅ Quick scan 🔴 count: 0
A1 Security attacks	task(agent_type="general-purpose", name="sentinel-a1")	N/A (Copilot CLI synchronous task call returned no ID)	✅ No findings
A2 Security defenses	task(agent_type="general-purpose", name="sentinel-a2")	N/A (Copilot CLI synchronous task call returned no ID)	✅ No findings
B Resilience	task(agent_type="general-purpose", name="sentinel-b")	N/A (Copilot CLI synchronous task call returned no ID)	✅ No findings
C Performance/architecture	task(agent_type="general-purpose", name="sentinel-c")	N/A (Copilot CLI synchronous task call returned no ID)	✅ No findings
D Test quality	task(agent_type="general-purpose", name="sentinel-d")	N/A (Copilot CLI synchronous task call returned no ID)	✅ No findings
E Dependencies	N/A	N/A	✅ Auto-skip: no dependency/supply-chain surface changed
F Documentation	task(agent_type="general-purpose", name="sentinel-f")	N/A (Copilot CLI synchronous task call returned no ID)	✅ No findings
Persistence	gh pr comment 1753 --body-file -	PR #1753 comment containing Report ID sentinel-1753-58e6abb-20260626	✅ Full report posted to PR

Correctness & Scope Checks

• User-facing labels changed as intended: ✅ NAV_ITEMS now has { id: "sessions", label: "Debates" } and { id: "chats", label: "Conversations" } (AppRouter.tsx:67-73).
• Route paths unchanged: ✅ ROUTES.sessions remains "/sessions"; ROUTES.chats remains "/chats"; chat paths remain /chat/expert/:slug and /chat/panel/:name (routes.ts:23-29).
• Nav IDs unchanged: ✅ NAV_PREFIXES still maps /sessions → sessions, /chats and /chat → chats (routes.ts:33-39).
• Telemetry labels unchanged: ✅ routeToTelemetryLabel still returns closed labels "sessions" and "chat"; AppRouter still records routeToTelemetryLabel(location.pathname) (telemetry.ts:26-36,89-103; AppRouter.tsx:104-110).
• Source scope disciplined: ✅ feat commit changed only the four intended source files; no other screens touched.
• Code-style discipline: ✅ lint/typecheck passed; diff search found no added any, default exports, or @github/copilot-sdk imports.

Findings

• 🔴 CRITICAL: 0
• 🟡 IMPORTANT: 0 new / 0 known
• 🟢 MINOR: 0

Details (ordered by severity)

None.

Follow-ups & Actions

• APPROVED → MERGE: no new 🟡/🟢 issues to file.
• Known sentinel:* issues tui(launch): council ui runs CLI first-run setup before the TUI (redundant with TUI onboarding) #1698–feat(tui): surface 'a Actions' in detail-screen shortcuts/footer #1752 were treated as context only; no matching findings were identified in this PR.

Decision rationale

• The reviewed SHA is bound and matches the requested 58e6abbfb28b91a9a1f3219df695c4d8b2acc119.
• TDD choreography is compliant: failing tests were committed before implementation; implementation and docs are separated.
• The implementation only changes static user-facing labels; route paths, nav IDs, and telemetry labels remain unchanged.
• Targeted TUI tests, lint, and typecheck all pass on the reviewed SHA.
• Phase 2 dimension review found no blockers, important findings, or minor findings.