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/components/footer/footer.component.html

@@ -2,7 +2,7 @@
   <div class="app-footer__container page-container">
     <div class="app-footer__top">
       <div class="app-footer__brand">
-        <app-logo />
+        <app-logo [srcOverride]="footerLogoUrl()" />
         <p>{{ 'footer.description' | translate }}</p>
       </div>
 
@@ -46,6 +46,12 @@
       @if (contactEmail) {
         <a [href]="'mailto:' + contactEmail">{{ contactEmail }}</a>
       }
+      @if (contactPhone) {
+        <a [href]="'tel:' + contactPhone">{{ contactPhone }}</a>
+      }
+      @if (companyAddress) {
+        <span class="app-footer__address">{{ companyAddress }}</span>
+      }
     </div>
   </div>
 </footer>