Rename to claudify, add docs and .deb packaging

- Rename package from claude-app to claudify (v0.1.0)
- Add README.md with install/usage instructions
- Add CLAUDE.md with architecture, build, and known issues
- Add .desktop file for application menu integration
- Build target set to .deb only
- Remove failed CSD button workarounds, document upstream bug
- Remove gtk dependency (no longer needed)

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

README.md

@@ -0,0 +1,56 @@
+# Claudify
+
+A native Linux desktop app for [claude.ai](https://claude.ai). Not a browser — a dedicated app that lives in your system tray, persists login sessions, and forwards notifications natively.
+
+Built with [Tauri v2](https://v2.tauri.app/) and WebKitGTK.
+
+## Features
+
+- **System tray** — hide/show from tray icon, left-click toggles visibility
+- **Session persistence** — cookies and localStorage persist across restarts
+- **Native notifications** — browser Notification API bridged to desktop notifications
+- **Navigation guard** — only claude.ai, Anthropic, and OAuth provider domains load in-app; all other links open in your default browser
+- **Lightweight** — uses system WebKitGTK, no bundled browser engine (~5MB .deb)
+
+## Install
+
+### From .deb
+
+```bash
+sudo dpkg -i claudify_0.1.0_amd64.deb
+```
+
+Requires `libwebkit2gtk-4.1-0` and `libayatana-appindicator3-1` (pulled automatically via `apt`).
+
+### From source
+
+```bash
+# Install system dependencies
+sudo apt install libwebkit2gtk-4.1-dev libxdo-dev librsvg2-dev libayatana-appindicator3-dev
+
+# Install Tauri CLI
+cargo install tauri-cli --version "^2.0" --locked
+
+# Build
+cargo tauri build
+```
+
+The .deb will be at `src-tauri/target/release/bundle/deb/claudify_0.1.0_amd64.deb`.
+
+## Usage
+
+Launch `claudify` from your application menu or terminal.
+
+- **Close button** hides the window to the system tray (app keeps running)
+- **Tray icon left-click** toggles window visibility
+- **Tray icon right-click** shows menu: Hide/Show Claude, Quit
+- **Ctrl+Plus/Minus** zooms in/out
+- **External links** open in your default browser
+
+## Known Issues
+
+- Window titlebar buttons (minimize/maximize/close) become non-interactive after hiding and restoring the window from the system tray. This is an [upstream bug](https://github.com/tauri-apps/tauri/issues/11856) in Tauri's GTK client-side decoration handling ([tao#1046](https://github.com/tauri-apps/tao/issues/1046)). Use the tray icon to hide/show and quit.
+
+## License
+
+MIT