chore(routing): default all routes to lazy client-side spa

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01S47a8QARNgW1qNjVQ6bX8H

src/app/app.routes.server.ts

@@ -3,6 +3,6 @@ import { RenderMode, ServerRoute } from '@angular/ssr';
 export const serverRoutes: ServerRoute[] = [
     {
         path: '**',
-        renderMode: RenderMode.Prerender,
+        renderMode: RenderMode.Client,
     },
 ];