feat(app): add prerender, self-hosted fonts and privacy page

Fonts come from npm, not Google, so no third-party font requests.
Pages are prerendered at build time; browser-only code is guarded.
nginx serves per-route HTML, a real 404 and gzip.

src/app/pages/projects/projects.component.ts

@@ -1,4 +1,5 @@
-import { Component, computed, inject, CUSTOM_ELEMENTS_SCHEMA, OnDestroy, OnInit } from '@angular/core';
+import { Component, computed, inject, CUSTOM_ELEMENTS_SCHEMA, OnDestroy, OnInit, PLATFORM_ID } from '@angular/core';
+import { isPlatformBrowser } from '@angular/common';
 import { ActivatedRoute, Router } from '@angular/router';
 import { Subscription } from "rxjs";
 import { MatCardModule } from "@angular/material/card";
@@ -49,6 +50,7 @@ export interface Projects {
 export class ProjectsComponent implements OnInit, OnDestroy {
 
   private readonly route = inject(ActivatedRoute);
+  private readonly isBrowser = isPlatformBrowser(inject(PLATFORM_ID));
   private readonly dialog = inject(MatDialog);
   private readonly router = inject(Router);
   private queryParamSub: Subscription | undefined;
@@ -283,7 +285,9 @@ export class ProjectsComponent implements OnInit, OnDestroy {
   }
 
   ngOnInit(): void {
-    window.scrollTo({ top: 0, behavior: 'smooth' });
+    if (this.isBrowser) {
+      window.scrollTo({ top: 0, behavior: 'smooth' });
+    }
     setTimeout(() => { this.dialogOpenFunction(); }, 10);
   }