docs: consolidate documentation and archive temporary reports

Step 1-2 (audit + plan): classified 35 project markdown files into
Core/Architecture/ADR/Temporary-audit/Sprint-report/Generated-review/
Duplicate/Obsolete/Historical. Agent-tooling files (.agents/skills/**,
.superpowers/**, docs/context/**, CLAUDE.md/GEMINI.md/AGENTS.md/
.github/copilot-instructions.md) explicitly out of scope — intentional
per-tool duplication, not documentation debt.

Step 3 (merge, no information lost):
- docs/PROJECT.md -> docs/PROJECT_INDEX.md, rewritten as the single
  entry point: system overview, living-doc index, archive pointer,
  current status, and a critical-finding callout up top.
- docs/backend/BACKEND-INTEGRATION.md -> docs/BACKEND_API.md,
  docs/backend/REMAINING-BACKEND-WORK.md ->
  docs/BACKEND_API_REMAINING_WORK.md (also folded in a legitimate
  uncommitted status update that had been sitting unstaged all
  session: categories marked DONE, order-creation endpoint noted done).
- RELEASE-NOTES.md merged into CHANGELOG.md (was a near-duplicate of
  the same release content in friendlier prose), then deleted.
- KNOWN-ISSUES.md: added item 13 (see below) and item 14 (missing
  canDeactivate on admin/products edit, from the archived PROJECT-STATE
  audit, re-verified still true); added a correction note to Fixed
  item 7.
- All cross-references to renamed/moved files fixed across every
  kept doc (grep+sed pass, then verified with a link-existence check
  across all 58 in-scope markdown files -> 0 broken links).

Step 4 (archive, nothing deleted without merging first): created
docs/archive/, moved 19 files there (3 root sprint reports, 1 platform
report, SPRINT-PLAN.md, and 14 one-off audit/review/report docs).
Added correction headers to the 3 archived docs whose conclusions were
affected by the finding below, rather than silently leaving them
misleading.

Step 5: docs/PROJECT_INDEX.md rewritten per the mission brief -
someone opening the repo should understand the whole system from it.

IMPORTANT FINDING (surfaced during this audit, not the mission's
primary goal but too significant to bury): pages/category/*,
pages/search/*, pages/item-detail/*, pages/info/**, pages/legal/**
(40+ files) are entirely unrouted dead code - app.routes.ts's
cmsContentRoutes is a literal empty array, and category/search/product
routes redirect to CatalogContainerComponent/
ProductDetailsContainerComponent, not these files. Confirmed against
app.routes.ts directly and cross-checked against FRONTEND.md's own
routing description. This means several fixes from earlier this cycle
(RC-Premium-01, RC STORE-01) and the dead-code cleanup sprint's
conclusion that these files were live were all wrong - documented as
KNOWN-ISSUES.md item 13, flagged at the top of PROJECT_INDEX.md, and
noted on the 3 archived docs whose conclusions it affects. No
application code was changed to fix this (out of scope per this
session's 'documentation only' constraint) - it needs a wire-it-up-or-
delete-it decision first.

Verification: tsc --noEmit clean, npm run build green, all markdown
links across 58 in-scope files resolve (checked programmatically).
No application/Angular/backend code modified.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

docs/FRONTEND-ROADMAP.md

@@ -1,30 +1,30 @@
 # Frontend Roadmap
 
-Status snapshot, refreshed from recent commits only. Full sprint history: `docs/SPRINT-PLAN.md`. Open bugs: `docs/KNOWN-ISSUES.md`.
+Status snapshot, refreshed from recent commits only. Full sprint history: `docs/archive/SPRINT-PLAN.md`. Open bugs: `docs/KNOWN-ISSUES.md`.
 
 ## Recently shipped
 
 **RC-Visual-02 — Composition audit** (storefront, builder, backoffice)
-Fixed undefined CSS theme vars, hand-rolled skeletons/empty-states migrated to shared `app-skeleton`/`app-empty-state`/`app-button`, missing `<th scope="col">`, dead CSS (~530-line unused cart `.alt` theme). Detail: `docs/UI-COMPOSITION-REVIEW.md`.
+Fixed undefined CSS theme vars, hand-rolled skeletons/empty-states migrated to shared `app-skeleton`/`app-empty-state`/`app-button`, missing `<th scope="col">`, dead CSS (~530-line unused cart `.alt` theme). Detail: `docs/archive/UI-COMPOSITION-REVIEW.md`.
 
 **RC-Premium-01 — Storefront premium UX polish**
-Visual/interaction polish on top of the RC-Visual-02 baseline — no redesign, no logic/route changes. Fixed color-only state signaling app-wide (added `aria-pressed`/`aria-current`/`aria-live` + icon/checkmark pairing to selected swatches, active filters/tabs/sort, toggle buttons), normalized remaining hardcoded hex to design tokens, added hover/focus-visible/active/disabled states across interactive controls, capped legal/CMS prose at 70ch, converted FAQ to native `<details>` disclosures. Four commits (Home/Catalog/Search, Product/Compare/Wishlist, Cart/Checkout, Static Pages). Detail: `docs/STORE_FRONT_UX_REVIEW.md`.
+Visual/interaction polish on top of the RC-Visual-02 baseline — no redesign, no logic/route changes. Fixed color-only state signaling app-wide (added `aria-pressed`/`aria-current`/`aria-live` + icon/checkmark pairing to selected swatches, active filters/tabs/sort, toggle buttons), normalized remaining hardcoded hex to design tokens, added hover/focus-visible/active/disabled states across interactive controls, capped legal/CMS prose at 70ch, converted FAQ to native `<details>` disclosures. Four commits (Home/Catalog/Search, Product/Compare/Wishlist, Cart/Checkout, Static Pages). Detail: `docs/archive/STORE_FRONT_UX_REVIEW.md`.
 
 **RC STORE-01 — Storefront cleanup**
-Closed 2 of the 5 gaps RC-Premium-01 deliberately deferred: category/search skeleton markup migrated to shared `app-skeleton`, dead cart `.email-form` markup/CSS removed. The other 3 (payment modal, cart confirm() dialog, untokenized colors) need an architecture/design-system decision, correctly left alone again. Detail: `docs/STORE_REVIEW.md`.
+Closed 2 of the 5 gaps RC-Premium-01 deliberately deferred: category/search skeleton markup migrated to shared `app-skeleton`, dead cart `.email-form` markup/CSS removed. The other 3 (payment modal, cart confirm() dialog, untokenized colors) need an architecture/design-system decision, correctly left alone again. Detail: `docs/archive/STORE_REVIEW.md`.
 
 **RC PERF-01 — Performance audit** (production-readiness, app-wide)
-Initial bundle **1.47 MB → 1.12 MB raw (−24%)**: biggest win was lazy-loading en/hy i18n packs (346 KB were eagerly loaded regardless of visitor language), plus a dead `items-carousel`/primeng-only component deleted, dead global CSS removed. RxJS/change-detection audit found the codebase already clean (0 leaks, 190/191 components already OnPush). Detail: `docs/PERFORMANCE_REPORT.md`.
+Initial bundle **1.47 MB → 1.12 MB raw (−24%)**: biggest win was lazy-loading en/hy i18n packs (346 KB were eagerly loaded regardless of visitor language), plus a dead `items-carousel`/primeng-only component deleted, dead global CSS removed. RxJS/change-detection audit found the codebase already clean (0 leaks, 190/191 components already OnPush). Detail: `docs/archive/PERFORMANCE_REPORT.md`.
 
 **RC A11Y-01 — WCAG 2.1 AA audit** (storefront, builder, backoffice)
-Added the app's first skip link (didn't exist anywhere before), fixed cart's custom payment modals having zero focus-trap, fixed `app-icon`'s "decorative by default" claim never actually being implemented, fixed 2 keyboard-inaccessible drag-and-drop reorder UIs (Builder homepage/footer, Backoffice categories), fixed an undefined `--color-primary` token in Builder, fixed admin sidebar nav announcing itself as "Dashboard" everywhere. Contrast fixes applied where safe; genuine brand-color contrast failures flagged for theme-owner sign-off, not changed unilaterally. Detail: `docs/ACCESSIBILITY_REPORT.md`.
+Added the app's first skip link (didn't exist anywhere before), fixed cart's custom payment modals having zero focus-trap, fixed `app-icon`'s "decorative by default" claim never actually being implemented, fixed 2 keyboard-inaccessible drag-and-drop reorder UIs (Builder homepage/footer, Backoffice categories), fixed an undefined `--color-primary` token in Builder, fixed admin sidebar nav announcing itself as "Dashboard" everywhere. Contrast fixes applied where safe; genuine brand-color contrast failures flagged for theme-owner sign-off, not changed unilaterally. Detail: `docs/archive/ACCESSIBILITY_REPORT.md`.
 
 **Release Candidate — live browser walkthrough** (storefront, builder, backoffice)
-Found and fixed **2 P0s**: (1) `language.guard.ts`'s legacy-URL redirect broke query params on every route app-wide (silently dead-ended any bookmarked/shared deep link with query params); (2) Backoffice Categories CRUD was completely broken end-to-end — wrong gateway-resolution fallback always picked the real HTTP gateway instead of the local mock in this environment, so every create/publish silently failed with zero user feedback. Plus 6 P1s (cart description, compare table raw enum values, search empty-state messaging, footer link 404, missing placeholder image, builder save-bar reset-state bug, backoffice mislabeled button). Detail: `docs/RELEASE_REPORT.md`.
+Found and fixed **2 P0s**: (1) `language.guard.ts`'s legacy-URL redirect broke query params on every route app-wide (silently dead-ended any bookmarked/shared deep link with query params); (2) Backoffice Categories CRUD was completely broken end-to-end — wrong gateway-resolution fallback always picked the real HTTP gateway instead of the local mock in this environment, so every create/publish silently failed with zero user feedback. Plus 6 P1s (cart description, compare table raw enum values, search empty-state messaging, footer link 404, missing placeholder image, builder save-bar reset-state bug, backoffice mislabeled button). Detail: `docs/archive/RELEASE_REPORT.md`.
 
 ## Sprint status
 
-**Sprint 30 — Final Release**: verify pass re-run 2026-07-23 (tsc --noEmit, `npm run build`, `arch:check:boundaries`, `arch:check:cycles`) — all green, only pre-existing bundle-budget warning. Working tree otherwise clean. Only remaining item: `git push` of 10 local `B2B` commits to `origin/B2B` — awaiting explicit user go-ahead (declined once already this sprint, per safety rules re-ask each time). Full checklist: `docs/SPRINT-PLAN.md`.
+**Sprint 30 — Final Release**: verify pass re-run 2026-07-23 (tsc --noEmit, `npm run build`, `arch:check:boundaries`, `arch:check:cycles`) — all green, only pre-existing bundle-budget warning. Working tree otherwise clean. Only remaining item: `git push` of 10 local `B2B` commits to `origin/B2B` — awaiting explicit user go-ahead (declined once already this sprint, per safety rules re-ask each time). Full checklist: `docs/archive/SPRINT-PLAN.md`.
 
 ## Known open items (not yet scheduled)
 
@@ -41,7 +41,8 @@ Full detail in `docs/KNOWN-ISSUES.md`. Summary:
 - `dynamic-renderer/` pipeline exists but is unwired — needs a finish-or-delete decision.
 - `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.
-- Backend integration: still mostly PLANNED/mock — a "backend ready" sprint was attempted and explicitly deferred (2026-07-24) pending a real API contract (no `docs/BACKEND-API.md`, no live endpoint confirmation beyond what's already CURRENT).
+- **CRITICAL**: `pages/category`, `pages/search`, `pages/item-detail`, `pages/info/**`, `pages/legal/**` (40+ files) are entirely unrouted dead code — `cmsContentRoutes` in `app.routes.ts` is a literal empty array. Several fixes in `docs/archive/` were applied to this dead code with zero production effect. See `docs/KNOWN-ISSUES.md` item 13 — needs a wire-it-up-or-delete-it decision.
+- 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).
 
 ## Not audited / out of scope