feat(desktop): port v0.11.4-v0.15.2 from Tauri to Electron + Discord-parity audio (v0.16.0)

Chronological port of every Tauri release commit (v0.11.4 -> v0.15.2)
into the Electron rebuild, plus Discord-style audio handling that goes
beyond the Tauri original.

Highlights:
  - All 17 Tauri release commits ported (audio fixes, custom notification
    sound, Discord-style chat UX, profile banner, changelog page,
    Discord-parity call UX, screen-share echo + re-watch UX, audio-loop
    fix).
  - Native napi-rs audio-loopback addon with WASAPI process-loopback:
      * EXCLUDE_TARGET_PROCESS_TREE for full-screen shares -> peers
        never hear themselves echoed back through the capture.
      * INCLUDE_TARGET_PROCESS_TREE for window shares -> only the
        picked window's audio is captured, not the whole OS mixer
        (Discord parity).
      * HWND -> PID resolution via Win32 GetWindowThreadProcessId.
  - Discord-style screen-source picker (thumbnail grid, screens vs
    apps tabs, live-refreshing thumbnails).
  - Hash routing fix for packaged builds (file:// can't resolve
    BrowserRouter paths).
  - Tauri sources removed (apps/desktop/src-tauri).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/desktop/package.json

@@ -1,20 +1,21 @@
 {
   "name": "@chat-app/desktop",
-  "version": "0.11.3",
+  "version": "0.16.0",
   "private": true,
-  "description": "Tauri v2 desktop client (Windows / macOS / Linux)",
+  "description": "Electron desktop client (Windows / macOS / Linux)",
   "type": "module",
+  "main": "out/main/main.js",
   "scripts": {
-    "dev": "tauri dev",
-    "vite:dev": "vite",
-    "build": "tauri build",
-    "vite:build": "vite build",
-    "preview": "vite preview",
+    "dev": "pnpm build:native && electron-vite dev",
+    "build": "pnpm build:native && electron-vite build && electron-builder",
+    "build:win": "pnpm build:native && electron-vite build && electron-builder --win",
+    "build:native": "pnpm --filter @chatapp/audio-loopback-native run build",
+    "preview": "electron-vite preview",
     "lint": "eslint src --ext .ts,.tsx",
     "typecheck": "tsc --noEmit",
     "test": "vitest run",
     "test:watch": "vitest",
-    "clean": "rm -rf dist .turbo src-tauri/target *.tsbuildinfo"
+    "clean": "rimraf dist out .turbo *.tsbuildinfo"
   },
   "dependencies": {
     "@chat-app/db-types": "workspace:*",
@@ -23,32 +24,75 @@
     "@livekit/components-react": "^2.9.0",
     "@livekit/track-processors": "^0.7.2",
     "@supabase/supabase-js": "^2.46.0",
-    "@tauri-apps/api": "^2.1.1",
-    "@tauri-apps/plugin-fs": "^2.5.0",
-    "@tauri-apps/plugin-global-shortcut": "^2.3.1",
-    "@tauri-apps/plugin-notification": "^2.0.1",
-    "@tauri-apps/plugin-sql": "^2.0.1",
-    "@tauri-apps/plugin-stronghold": "^2.0.1",
-    "@tauri-apps/plugin-updater": "^2.10.1",
+    "better-sqlite3": "^11.3.0",
+    "electron-updater": "^6.3.0",
     "i18next": "^23.16.4",
     "libsodium-wrappers-sumo": "0.7.15",
     "livekit-client": "^2.7.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
+    "react-easy-crop": "^5.5.7",
     "react-i18next": "^15.1.1",
     "react-router-dom": "^6.28.0",
     "zustand": "^5.0.1"
   },
   "devDependencies": {
-    "@tauri-apps/cli": "^2.1.0",
+    "@types/better-sqlite3": "^7.6.0",
     "@types/libsodium-wrappers": "^0.7.14",
     "@types/libsodium-wrappers-sumo": "^0.8.2",
     "@types/react": "^18.3.12",
     "@types/react-dom": "^18.3.1",
     "@vitejs/plugin-react": "^4.3.3",
     "autoprefixer": "^10.4.20",
+    "electron": "^33.0.0",
+    "electron-builder": "^25.0.0",
+    "electron-vite": "^2.3.0",
     "postcss": "^8.4.49",
+    "rimraf": "^6.0.0",
     "tailwindcss": "^3.4.15",
     "vite": "^5.4.11"
+  },
+  "build": {
+    "appId": "com.meinname.chatapp",
+    "productName": "ChatApp",
+    "directories": {
+      "output": "release",
+      "buildResources": "resources"
+    },
+    "files": [
+      "out/**/*",
+      "package.json"
+    ],
+    "extraResources": [
+      {
+        "from": "native/audio-loopback/audio-loopback.win32-x64-msvc.node",
+        "to": "native/audio-loopback.node"
+      }
+    ],
+    "win": {
+      "target": [
+        "nsis"
+      ],
+      "icon": "resources/icon.ico"
+    },
+    "mac": {
+      "target": [
+        "dmg"
+      ],
+      "icon": "resources/icon.icns",
+      "identity": null
+    },
+    "linux": {
+      "target": [
+        "AppImage"
+      ],
+      "icon": "resources/icon.png"
+    },
+    "publish": [
+      {
+        "provider": "generic",
+        "url": "https://update.netralax.cloud/windows/"
+      }
+    ]
   }
 }