docs: final project closeout - classify TODO, backend spec, status

Classified every TODO.md item into one of DONE/BACKEND/PRODUCT
DECISION/FUTURE VERSION/BUG, verified against source, not against
prior docs:

- BACKEND items (bootstrap content, builder draft/publish, 6 admin
  CRUD domains, media pipeline) confirmed already covered by
  BACKEND_INTEGRATION.md; appended a mapping appendix rather than
  duplicating raw bullets. Fixed 22 stale internal BACKEND_API.md
  cross-references left over from before that file was archived.
- PRODUCT DECISION items (dark mode, brand-color WCAG contrast,
  stars.component token gap, footer Contacts content, advanced
  analytics, payment providers) moved to new docs/PRODUCT_BACKLOG.md.
- FUTURE VERSION items (Angular 22, bundle splitting, cart-modal
  composition cleanup, hero-spacing investigation) moved to new
  docs/FUTURE_FEATURES.md.
- BUG: rewrote docs/KNOWN-ISSUES.md down to the one real, verified,
  currently-reproducible frontend bug (Ed25519 admin-auth error codes
  session-expired/invalid-signature are unreachable -
  toAuthErrorShape() never reads a body error code, only maps HTTP
  status, and no status ever produces those two codes - confirmed by
  reading auth.service.ts + auth-error.model.ts). Condensed the
  "Fixed" history instead of carrying full verbose repro text forward.
- DONE items removed outright (dead-code deletion, dashboard false
  positive, RC-02 fixes, stale "dynamic-renderer unwired"/"178 missing
  keys" claims already disproven by source).

docs/TODO.md rewritten to the exact "no blockers" template - nothing
left qualifies as a release blocker.

New docs/PROJECT_STATUS.md: honest per-area status (frontend/backend/
docs/auth/builder/storefront/admin), known limitations, and explicit
production/backend/demo readiness calls - including correcting an
initial draft's unpushed-commit count (53, not 10, per git log
origin/B2B..HEAD).

New docs/NEXT_PHASE.md: work that can only start once a real backend
exists (gateway swap-in, mock removal, dormant-auth activation, role
enforcement, integration/E2E tests, perf profiling, monitoring,
maintenance-mode UI).

docs/PROJECT_INDEX.md (the stated entry point) updated to link the new
doc set and stop pointing at the now-archived BACKEND_API.md/AUTH.md.
docs/FRONTEND-ROADMAP.md's "Known open items" replaced with pointers
to the new category-split docs instead of a duplicated mixed list.

Not swept: a handful of low-traffic docs (architecture ADRs,
FRONTEND.md, EDITOR.md, ARCHITECTURE.md, PROJECT-STRUCTURE.md,
StaticPages.md, ADMIN.md) still reference the old BACKEND_API.md/
AUTH.md filenames - noted as a known gap in PROJECT_STATUS.md rather
than touched blindly, since they're historical-context docs, not the
navigation entry point.

docs/FRONTEND-ROADMAP.md

@@ -28,21 +28,14 @@ Found and fixed **2 P0s**: (1) `language.guard.ts`'s legacy-URL redirect broke q
 
 ## Known open items (not yet scheduled)
 
-Full detail in `docs/KNOWN-ISSUES.md`. Summary:
-- Payment modal / bank-payment iframe on Cart still custom (own focus-trap, multi-step state — note: RC A11Y-01 added a real focus-trap to it, but it's still not `app-dialog` itself) — candidate for `app-dialog` migration.
-- Cart's native `confirm()` on clear-cart — no existing confirm-dialog pattern to follow yet.
-- Genuine brand-color contrast failures (`--border-color`, `--success/warning/error/info-color` as text) — flagged by RC A11Y-01, need theme-owner sign-off before changing.
-- `stars.component` rating glyph color has no exact token match — needs a deliberate token-extension decision (the `pages/category`/`pages/search` half of this was resolved by deleting those files, see below).
-- Homepage hero-to-categories dead-space gap — traces to mock bootstrap config, not a code defect; needs real-tenant-data reproduction.
-- Footer "Contacts" link has no static-page content in mock data — needs a content decision (found during RC walkthrough).
-- Builder's static-page body editor is hidden inside a collapsed "Advanced" section, mislabeled "Source HTML (advanced)" — works, but needs a navigation/labeling decision (found during RC walkthrough).
-- ~178 missing `adminXxx.*` i18n keys across admin backoffice.
-- Theme Mode (dark/system) selector has no runtime CSS effect — real feature project, not a wiring fix.
-- ~~`dynamic-renderer/` pipeline exists but is unwired~~ — verified 2026-07-25 (RC-02 task 6): it IS wired, it's the live homepage rendering engine (`HomeComponent` → `WebsiteRuntimeFacade` → `PageRendererService`/`PageResolverService` → `DynamicPageLayoutComponent`). Prior "unwired" note was stale.
-- `primeng`/`primeicons` still in `package.json` despite the only consumer being deleted (RC PERF-01) — `npm uninstall` blocked by an unrelated broken `barry-cache` devDependency (`ETARGET`); fix that first.
-- 2 large lazy chunks (`project-editor` 320 kB, `catalog-container` 126 kB) — no mechanical split found, needs a dedicated task.
-- **RESOLVED 2026-07-25 (RC-02 task 6)**: `pages/category`, `pages/search`, `pages/item-detail`, `pages/info/**`, `pages/legal/**` (40+ files) were entirely unrouted dead code — deleted. See `docs/KNOWN-ISSUES.md` item 13.
-- Backend integration: still mostly PLANNED/mock — a "backend ready" sprint was attempted and explicitly deferred (2026-07-24) pending a real API contract (`docs/BACKEND_API.md` is the canonical spec — no live endpoint confirmation beyond what's already CURRENT).
+As of the 2026-07-26 Final Project Closeout, open items are split by category instead of one mixed list:
+- Real, reproducible frontend bugs: `docs/KNOWN-ISSUES.md` (one open item).
+- Items needing a client/business decision (dark mode, brand-color contrast, Contacts page content, advanced analytics, payment providers): `docs/PRODUCT_BACKLOG.md`.
+- Nice-to-have, non-blocking future work (Angular 22, bundle splitting, cart-modal composition cleanup, hero-spacing investigation): `docs/FUTURE_FEATURES.md`.
+- Backend integration: fully specified, not yet implemented — the single canonical spec is `docs/BACKEND_INTEGRATION.md`.
+- Release blockers: `docs/TODO.md` — currently none.
+
+Overall status: `docs/PROJECT_STATUS.md`.
 
 ## Not audited / out of scope