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/logo/logo.component.ts

@@ -1,4 +1,4 @@
-import { Component, ChangeDetectionStrategy } from '@angular/core';
+import { Component, ChangeDetectionStrategy, Input } from '@angular/core';
 import { UiRuntimeFacade } from '../../facades/runtime/ui-runtime.facade';
 
 @Component({
@@ -17,6 +17,9 @@ import { UiRuntimeFacade } from '../../facades/runtime/ui-runtime.facade';
   changeDetection: ChangeDetectionStrategy.OnPush
 })
 export class LogoComponent {
+  /** Overrides the default (branding.logoUrl) logo, e.g. footer.logoUrl. */
+  @Input() srcOverride?: string;
+
   constructor(private readonly uiRuntime: UiRuntimeFacade) {}
 
   get brandName(): string {
@@ -24,6 +27,6 @@ export class LogoComponent {
   }
 
   get logoPath(): string {
-    return this.uiRuntime.logoUrl();
+    return this.srcOverride || this.uiRuntime.logoUrl();
   }
 }