fix: ensure assets-build is included in production bundle and implement robust tray icon path resolution for AppImage

frontend/electron/main.ts

@@ -93,14 +93,43 @@ const initBackend = () => {
 
 // --- System Tray ---
 const createTray = () => {
-  const assetsDir = path.join(__dirname, '..', 'assets-build');
-  const possibleIcons = ['icon.svg', 'icon.png'];
-  let iconPath = '';
-  for (const name of possibleIcons) {
-    const fullPath = path.join(assetsDir, name);
-    if (fs.existsSync(fullPath)) { iconPath = fullPath; break; }
+  // Try to find the icon in various standard locations
+  const possiblePaths = [
+    path.join(__dirname, '..', 'assets-build'), // Dev
+    path.join(process.resourcesPath, 'assets-build'), // Packaged (External)
+    path.join(app.getAppPath(), 'dist', 'assets-build'), // Packaged (Internal dist)
+    path.join(app.getAppPath(), 'assets-build') // Packaged (Internal root)
+  ];
+
+  let assetsDir = '';
+  for (const p of possiblePaths) {
+    if (fs.existsSync(p)) {
+      assetsDir = p;
+      break;
+    }
   }
-  if (!iconPath) return;
+
+  const possibleIcons = ['icon.png', 'icon.svg'];
+  let iconPath = '';
+
+  if (assetsDir) {
+    for (const name of possibleIcons) {
+      const fullPath = path.join(assetsDir, name);
+      if (fs.existsSync(fullPath)) {
+        iconPath = fullPath;
+        break;
+      }
+    }
+  }
+  
+  console.log(`[Tray] Resolved assets directory: ${assetsDir || 'NOT FOUND'}`);
+  console.log(`[Tray] Attempting to initialize with icon: ${iconPath || 'NONE FOUND'}`);
+  
+  if (!iconPath) {
+    console.warn(`[Tray] FAILED: No valid icon found in searched paths.`);
+    return;
+  }
+  
   try {
     const icon = nativeImage.createFromPath(iconPath).resize({ width: 16, height: 16 });
     tray = new Tray(icon);