step 1 - convert al lcomponents, directives and pipes to standalone

see https://v17.angular.io/guide/standalone-migration
I executed:
ng g @angular/core:standalone
and selected "Convert all components, directives and pipes to standalone"

pdb-js/src/app/main-page/main-page.component.ts

@@ -1,9 +1,12 @@
 import { Component, OnInit } from '@angular/core';
+import { RouterLink } from '@angular/router';
 
 @Component({
-  selector: 'pdb-main-page',
-  templateUrl: './main-page.component.html',
-  styleUrls: ['./main-page.component.scss']
+    selector: 'pdb-main-page',
+    templateUrl: './main-page.component.html',
+    styleUrls: ['./main-page.component.scss'],
+    standalone: true,
+    imports: [RouterLink]
 })
 export class MainPageComponent implements OnInit {