Complete PWA implementation with custom icons

- Add PWA icons in multiple sizes (192px, 512px, maskable)
- Configure manifest.webmanifest with proper icon references
- Implement PWA install prompt with custom notification
- Add manual manifest route for development compatibility
- Update meta tags for iOS and Android PWA support
- Configure service worker with music and image caching
- Enable auto-updates and offline functionality

PWA now fully installable on all platforms with proper branding.

server/routes/manifest.webmanifest.get.ts

@@ -0,0 +1,48 @@
+export default defineEventHandler(async (event) => {
+  // Set proper content type for manifest
+  setHeader(event, 'Content-Type', 'application/manifest+json')
+  setHeader(event, 'Cache-Control', 'public, max-age=0, must-revalidate')
+  
+  const manifest = {
+    name: 'RepoDructor Music Player',
+    short_name: 'RepoDructor',
+    description: 'A beautiful glassmorphism music player for your local network',
+    theme_color: '#8b5cf6',
+    background_color: '#0f172a',
+    display: 'standalone',
+    orientation: 'portrait',
+    scope: '/',
+    start_url: '/',
+    categories: ['music', 'entertainment'],
+    lang: 'es',
+    dir: 'ltr',
+    icons: [
+      {
+        src: '/logo-192.png',
+        sizes: '192x192',
+        type: 'image/png',
+        purpose: 'any'
+      },
+      {
+        src: '/logo-512.png',
+        sizes: '512x512',
+        type: 'image/png',
+        purpose: 'any'
+      },
+      {
+        src: '/logo-maskable-512.png',
+        sizes: '512x512',
+        type: 'image/png',
+        purpose: 'maskable'
+      },
+      {
+        src: '/logo-192.png',
+        sizes: '192x192',
+        type: 'image/png',
+        purpose: 'maskable'
+      }
+    ]
+  }
+  
+  return manifest
+})