revert: remove PWA functionality due to service worker issues

The PWA implementation was causing too many issues:
- Service worker conflicts with CSP policies
- 429 rate limiting errors
- Application freezing
- External resource blocking

Removed:
- service-worker.js
- manifest.json
- offline.html
- PWA service and install component
- PWA meta tags from index.html
- PWA asset configuration

The library now functions as a standard web app without PWA features.
This provides a more stable and reliable user experience.

apps/frontend/src/app/components/pwa-install/pwa-install.component.ts

@@ -1,176 +0,0 @@
-/**
- * @copyright 2026 NHCarrigan
- * @license Naomi's Public License
- * @author Hikari
- */
-
-import { Component, inject } from '@angular/core';
-import { CommonModule } from '@angular/common';
-import { PwaService } from '../../services/pwa.service';
-
-@Component({
-  selector: 'app-pwa-install',
-  standalone: true,
-  imports: [CommonModule],
-  template: `
-    @if (pwaService.isInstallable() && !dismissed) {
-      <div class="install-banner">
-        <div class="install-content">
-          <div class="install-icon">📱</div>
-          <div class="install-text">
-            <h3>Install Naomi's Library</h3>
-            <p>Add to your home screen for quick access and offline support!</p>
-          </div>
-        </div>
-        <div class="install-actions">
-          <button (click)="install()" class="btn-install">Install</button>
-          <button (click)="dismiss()" class="btn-dismiss">Not Now</button>
-        </div>
-      </div>
-    }
-  `,
-  styles: [`
-    .install-banner {
-      position: fixed;
-      bottom: 1rem;
-      left: 50%;
-      transform: translateX(-50%);
-      background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
-      border: 2px solid #9d4edd;
-      border-radius: 12px;
-      padding: 1.5rem;
-      max-width: 500px;
-      width: calc(100% - 2rem);
-      box-shadow: 0 8px 32px rgba(157, 78, 221, 0.3);
-      z-index: 1000;
-      animation: slideUp 0.3s ease-out;
-    }
-
-    @keyframes slideUp {
-      from {
-        transform: translateX(-50%) translateY(100px);
-        opacity: 0;
-      }
-      to {
-        transform: translateX(-50%) translateY(0);
-        opacity: 1;
-      }
-    }
-
-    .install-content {
-      display: flex;
-      align-items: center;
-      gap: 1rem;
-      margin-bottom: 1rem;
-    }
-
-    .install-icon {
-      font-size: 2.5rem;
-      flex-shrink: 0;
-    }
-
-    .install-text h3 {
-      margin: 0 0 0.25rem 0;
-      color: #9d4edd;
-      font-size: 1.1rem;
-    }
-
-    .install-text p {
-      margin: 0;
-      color: #b0b0b0;
-      font-size: 0.9rem;
-    }
-
-    .install-actions {
-      display: flex;
-      gap: 0.75rem;
-      justify-content: flex-end;
-    }
-
-    .btn-install,
-    .btn-dismiss {
-      padding: 0.75rem 1.5rem;
-      border: none;
-      border-radius: 8px;
-      font-size: 0.9rem;
-      font-weight: 600;
-      cursor: pointer;
-      transition: all 0.2s;
-    }
-
-    .btn-install {
-      background: linear-gradient(135deg, #9d4edd 0%, #c77dff 100%);
-      color: white;
-    }
-
-    .btn-install:hover {
-      transform: translateY(-2px);
-      box-shadow: 0 4px 12px rgba(157, 78, 221, 0.4);
-    }
-
-    .btn-dismiss {
-      background: transparent;
-      color: #9d4edd;
-      border: 1px solid #9d4edd;
-    }
-
-    .btn-dismiss:hover {
-      background: rgba(157, 78, 221, 0.1);
-    }
-
-    @media (max-width: 600px) {
-      .install-banner {
-        bottom: 0;
-        left: 0;
-        right: 0;
-        transform: none;
-        max-width: none;
-        width: 100%;
-        border-radius: 12px 12px 0 0;
-        border-bottom: none;
-      }
-
-      @keyframes slideUp {
-        from {
-          transform: translateY(100%);
-          opacity: 0;
-        }
-        to {
-          transform: translateY(0);
-          opacity: 1;
-        }
-      }
-
-      .install-content {
-        flex-direction: column;
-        text-align: center;
-      }
-
-      .install-actions {
-        flex-direction: column-reverse;
-      }
-
-      .btn-install,
-      .btn-dismiss {
-        width: 100%;
-      }
-    }
-  `]
-})
-export class PwaInstallComponent {
-  protected pwaService = inject(PwaService);
-  protected dismissed = false;
-
-  protected async install(): Promise<void> {
-    const result = await this.pwaService.promptInstall();
-    if (result) {
-      this.dismissed = true;
-    }
-  }
-
-  protected dismiss(): void {
-    this.dismissed = true;
-    // Remember dismissal in session storage
-    sessionStorage.setItem('pwa-install-dismissed', 'true');
-  }
-}