Initial implementation of Claude desktop app (Tauri v2)

Standalone native desktop app wrapping claude.ai with:
- Direct webview navigation to claude.ai (not iframe)
- System tray with close-to-tray behavior
- Native notification bridge (JS overrides browser Notification API)
- Navigation filter allowing only Claude, Anthropic, and OAuth domains
- External links open in system browser
- Session persistence via WebKitGTK cookies/localStorage
- Builds .deb and AppImage bundles

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src-tauri/tauri.conf.json

@@ -0,0 +1,34 @@
+{
+  "productName": "Claude",
+  "version": "1.0.0",
+  "identifier": "no.naiv.claude-app",
+  "build": {
+    "frontendDist": "../src"
+  },
+  "app": {
+    "withGlobalTauri": true,
+    "windows": [],
+    "security": {
+      "dangerousDisableAssetCspModification": true,
+      "assetProtocol": {
+        "enable": false
+      }
+    }
+  },
+  "bundle": {
+    "active": true,
+    "targets": ["deb", "appimage"],
+    "icon": [
+      "icons/32x32.png",
+      "icons/128x128.png",
+      "icons/128x128@2x.png",
+      "icons/icon.icns",
+      "icons/icon.ico"
+    ],
+    "linux": {
+      "deb": {
+        "depends": ["libwebkit2gtk-4.1-0", "libayatana-appindicator3-1"]
+      }
+    }
+  }
+}