integration: add route metadata, JSON-LD and harden the public shell

Ship prerendered SEO, crawl files and palette/map a11y so every locale route is indexable, honest and keyboard-usable without inventing claims.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/app/app.spec.ts

@@ -1,9 +1,11 @@
+import { ApplicationRef } from '@angular/core';
 import { TestBed } from '@angular/core/testing';
-import { provideRouter } from '@angular/router';
+import { provideRouter, TitleStrategy } from '@angular/router';
 import { App } from './app';
 import { routes } from './app.routes';
 import { SITE_CONTENT } from './core/content/content.token';
 import { SITE_CONTENT_DATA } from './core/content/site-content';
+import { SeoTitleStrategy } from './core/seo/seo-title.strategy';
 
 describe('App', () => {
   beforeEach(async () => {
@@ -11,7 +13,11 @@ describe('App', () => {
 
     await TestBed.configureTestingModule({
       imports: [App],
-      providers: [provideRouter(routes), { provide: SITE_CONTENT, useValue: SITE_CONTENT_DATA }],
+      providers: [
+        provideRouter(routes),
+        { provide: SITE_CONTENT, useValue: SITE_CONTENT_DATA },
+        { provide: TitleStrategy, useClass: SeoTitleStrategy },
+      ],
     }).compileComponents();
   });
 
@@ -43,4 +49,27 @@ describe('App', () => {
     expect(compiled.querySelector('a.language-switch[hreflang]')).toBeTruthy();
     expect(compiled.querySelector('footer')).toBeTruthy();
   });
+
+  it('keeps the palette trigger in the header and the dialog outside .site', async () => {
+    const fixture = TestBed.createComponent(App);
+    await fixture.whenStable();
+    const compiled = fixture.nativeElement as HTMLElement;
+    const site = compiled.querySelector('.site');
+    const trigger = compiled.querySelector('header .command-palette-trigger');
+
+    expect(site).toBeTruthy();
+    expect(trigger).toBeTruthy();
+    expect(site?.contains(trigger)).toBe(true);
+
+    (trigger as HTMLButtonElement).click();
+    fixture.detectChanges();
+    await fixture.whenStable();
+    TestBed.inject(ApplicationRef).tick();
+    fixture.detectChanges();
+
+    const dialog = compiled.querySelector('[role="dialog"]');
+    expect(dialog).toBeTruthy();
+    expect(site?.contains(dialog)).toBe(false);
+    expect(site?.hasAttribute('inert')).toBe(true);
+  });
 });