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frontend/src/app/app.routes.ts

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+import { Routes } from '@angular/router';
+import { HomeComponent } from './routes/home/home.component';
+import { PostComponent } from './routes/post/post.component';
+
+export const routes: Routes = [
+  { path: '', component: HomeComponent },
+  { path: 'post', children: [{ path: ':id', component: PostComponent }] },
+];