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>

src/app/core/config/footer-resolver.service.ts

@@ -37,6 +37,7 @@ export interface FooterResolvedModel {
   groups: FooterResolvedGroup[];
   paymentIcons: FooterPaymentIcon[];
   copyrightText: string;
+  logoUrl?: string;
 }
 
 @Injectable({ providedIn: 'root' })
@@ -57,7 +58,8 @@ export class FooterResolverService {
     return {
       groups: this.resolveFooterGroups(bootstrap),
       paymentIcons: this.resolvePaymentIcons(bootstrap.footer),
-      copyrightText: this.resolveCopyrightText(bootstrap)
+      copyrightText: this.resolveCopyrightText(bootstrap),
+      logoUrl: bootstrap.footer?.logoUrl
     };
   }