feat: Add installable Android PWA and native Android Web Share Target support

public/manifest.json

@@ -1,17 +1,46 @@
 {
-  "name": "Everclone",
+  "name": "Everclone — Notes & Knowledge Base",
   "short_name": "Everclone",
-  "description": "Self-hosted Evernote clone for notes, web clips, and attachments",
+  "description": "Self-hosted Evernote clone for rich notes, web clips, and attachments",
+  "id": "/",
   "start_url": "/",
+  "scope": "/",
   "display": "standalone",
-  "background_color": "#1a1a1a",
+  "display_override": ["window-controls-overlay", "standalone", "minimal-ui"],
+  "background_color": "#18181b",
   "theme_color": "#00a82d",
+  "orientation": "any",
+  "categories": ["productivity", "utilities", "notes"],
   "icons": [
     {
       "src": "/icon.svg",
       "sizes": "any",
       "type": "image/svg+xml",
-      "purpose": "any maskable"
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icon-maskable-192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "maskable"
+    },
+    {
+      "src": "/icon-maskable-512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "maskable"
     }
   ],
   "share_target": {
@@ -25,9 +54,25 @@
       "files": [
         {
           "name": "files",
-          "accept": ["image/*", "audio/*", "application/pdf", "text/*"]
+          "accept": ["image/*", "audio/*", "video/*", "application/pdf", "text/*", "*/*"]
         }
       ]
     }
-  }
+  },
+  "shortcuts": [
+    {
+      "name": "New Note",
+      "short_name": "New Note",
+      "description": "Create a new note in Everclone",
+      "url": "/?action=new-note",
+      "icons": [{ "src": "/icon-192.png", "sizes": "192x192" }]
+    },
+    {
+      "name": "Search Notes",
+      "short_name": "Search",
+      "description": "Search notes across your library",
+      "url": "/?action=search",
+      "icons": [{ "src": "/icon-192.png", "sizes": "192x192" }]
+    }
+  ]
 }

public/sw.js

@@ -0,0 +1,74 @@
+// Everclone PWA Service Worker (v1.0.0)
+const CACHE_NAME = 'everclone-cache-v1';
+const PRECACHE_URLS = [
+  '/',
+  '/manifest.json',
+  '/icon.svg',
+  '/icon-192.png',
+  '/icon-512.png',
+  '/apple-touch-icon.png'
+];
+
+self.addEventListener('install', (event) => {
+  event.waitUntil(
+    caches.open(CACHE_NAME).then((cache) => {
+      return cache.addAll(PRECACHE_URLS).catch(() => {});
+    })
+  );
+  self.skipWaiting();
+});
+
+self.addEventListener('activate', (event) => {
+  event.waitUntil(
+    caches.keys().then((keys) => {
+      return Promise.all(
+        keys.filter((key) => key !== CACHE_NAME).map((key) => caches.delete(key))
+      );
+    })
+  );
+  self.clients.claim();
+});
+
+self.addEventListener('fetch', (event) => {
+  // CRITICAL: Never intercept POST/PUT/DELETE requests!
+  // This ensures Android Web Share Target multipart POSTs stream directly to /api/hooks/note
+  if (event.request.method !== 'GET') {
+    return;
+  }
+
+  const url = new URL(event.request.url);
+
+  // Bypass API endpoints and file downloads to always get fresh data
+  if (url.pathname.startsWith('/api/')) {
+    return;
+  }
+
+  // Network-first strategy for navigation and static assets with cache fallback
+  event.respondWith(
+    fetch(event.request)
+      .then((networkResponse) => {
+        if (
+          networkResponse &&
+          networkResponse.status === 200 &&
+          (url.pathname === '/' || url.pathname.startsWith('/_next/static/'))
+        ) {
+          const responseClone = networkResponse.clone();
+          caches.open(CACHE_NAME).then((cache) => {
+            cache.put(event.request, responseClone);
+          });
+        }
+        return networkResponse;
+      })
+      .catch(() => {
+        return caches.match(event.request).then((cachedResponse) => {
+          if (cachedResponse) {
+            return cachedResponse;
+          }
+          if (event.request.mode === 'navigate') {
+            return caches.match('/');
+          }
+          return new Response('Network error occurred', { status: 503, statusText: 'Offline' });
+        });
+      })
+  );
+});