foundation: project guide, tooling, design tokens, bilingual shell and routing contracts

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

src/app/features/projects/projects.html

@@ -0,0 +1,3 @@
+@if (page(); as copy) {
+  <app-page-placeholder [page]="copy" />
+}

src/app/features/projects/projects.ts

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+import { ChangeDetectionStrategy, Component, inject } from '@angular/core';
+import { ContentService } from '../../core/content/content.service';
+import { PagePlaceholder } from '../../shared/page-placeholder/page-placeholder';
+
+@Component({
+  selector: 'app-projects-page',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  imports: [PagePlaceholder],
+  templateUrl: './projects.html',
+})
+export class ProjectsPage {
+  protected readonly page = inject(ContentService).page('projects');
+}