feat: dead-config sweep, test suite foundation, widget settingsSchema validation

Sprint G: audited every BootstrapConfig field for a real runtime consumer
(docs/DEAD-CONFIG-AUDIT.md). Wired 3 previously-dead editable fields:
footer.logoUrl, company.address.street/contacts.phone, catalog.suggestionsEnabled.
Remaining dead fields needing a business/design decision tracked in
PRODUCT_BACKLOG.md/KNOWN-ISSUES.md, not silently left.

Sprint H: 6 new spec files (test count 57 -> 83), covering ProjectEditorFacade
(undo/redo, draft persistence, publish gating), AdminAnalyticsFacade
(never-fabricate-a-number contract), and regression coverage for this
session's carousel/hero/profile-toggle fixes.

Sprint I: widget settingsSchema (declared in widget-manifest.json, never
validated) now enforced via a new lightweight schema check in
ProjectValidator, surfaced through the existing issuesByField pipeline.
Same check reused in diagnostics so editor and diagnostics can't disagree.

Verification: tsc clean, ng build clean, 83/83 tests pass, barry-cache
validate clean (2 pre-existing unrelated warnings only).

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

docs/KNOWN-ISSUES.md

@@ -23,6 +23,17 @@ Real, reproducible, currently-open frontend bugs only. Everything that needed a
    - Found: 2026-07-26, Backend Finalization Sprint documentation pass (traced while
      writing `docs/BACKEND.md` §4 Authentication / §6 Error Model).
 
+2. **`NavigationConfig.header` dead editable field — top nav links list has no renderer.**
+   The Navigation editor section lets a client edit a list of header nav items
+   (`navigation.header`), but `HeaderComponent` never reads `NavigationConfig.header`
+   anywhere — its category menu comes from `CategoryFacade` instead. Editing this
+   list currently has zero visible effect on the storefront.
+   - **Fix requires real feature work**, not a wiring change: rendering a
+     configurable top-nav means deciding positioning relative to the existing
+     category menu, active-route styling, and whether `children` (dropdowns) are
+     supported — out of scope for a mechanical fix.
+   - Found: 2026-08-05, Sprint G dead-config sweep (`docs/DEAD-CONFIG-AUDIT.md`).
+
 ## Fixed (this cycle)
 
 Condensed — full detail in commit history and `docs/RELEASE_REPORT.md`.
@@ -43,3 +54,4 @@ Condensed — full detail in commit history and `docs/RELEASE_REPORT.md`.
 - Admin `reports` nav stub — real page (`backoffice/reports`), reuses `AdminAnalyticsFacade` for Sales/Top Products/Marketplace Health cards with CSV export.
 - Admin `settings` nav stub — real page (`backoffice/settings`), UI density preference (comfortable/compact), persisted to `localStorage`, applied to admin list tables.
 - Admin `documentation`/`help` nav stubs — both wired to real external links (`mailto:` support email, `tenant.documentationUrl`).
+- Sprint G dead-config sweep: `footer.logoUrl`, `company.address.street`, `company.contacts.phone`, `catalog.suggestionsEnabled` were editable with no runtime consumer — all four wired up. Full findings table in `docs/DEAD-CONFIG-AUDIT.md`.