v0.2.0: System tray, IPC status, VAD, hotkey grab, and polish

- Add system tray icon with Exit menu (tray-icon/muda)
- Add IPC daemon status via named pipe (Windows) / Unix socket (Linux)
- Add `mouth status` command to query running daemon
- Add daemon lock to prevent multiple instances
- Hide Windows console window when running as daemon
- Wire up Silero VAD model download and speech filtering
- Switch hotkey listener from rdev::listen to rdev::grab to consume hotkeys
- Add hotkey capture mode in interactive config (press keys instead of typing)
- Add all missing key names (brackets, punctuation, numpad, etc.)
- Fix ONNX tensor type mismatches (encoder wants i64, decoder wants i32)
- Add 300ms lead-in silence to compensate for mic startup latency
- Add 300ms trailing recording after stop for speech not to be clipped
- Add 50ms silence before audio feedback blips for device warmup
- Reduce overlay size (150x18, was 200x36)
- Add PolyForm Noncommercial 1.0.0 license
- Flesh out user-focused README
- Update release script with Gitea/GitHub forge support

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Cargo.toml

@@ -1,8 +1,9 @@
 [package]
 name = "mouth"
-version = "0.1.0"
+version = "0.2.0"
 edition = "2024"
 description = "Offline speech-to-text with global hotkey and paste"
+license-file = "LICENSE"
 
 [dependencies]
 # CLI
@@ -24,7 +25,7 @@ tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 tokio = { version = "1", features = ["full"] }
 
 # Global hotkey
-rdev = "0.5"
+rdev = { version = "0.5", features = ["unstable_grab"] }
 
 # Audio capture
 cpal = "0.15"
@@ -56,6 +57,15 @@ rodio = "0.20"
 # System info
 num_cpus = "1"
 
+# System tray
+tray-icon = "0.19"
+
+# IPC status
+serde_json = "1"
+
 # Error handling
 anyhow = "1"
 thiserror = "2"
+
+[target.'cfg(windows)'.dependencies]
+windows-sys = { version = "0.59", features = ["Win32_System_Console", "Win32_UI_WindowsAndMessaging", "Win32_System_Pipes", "Win32_System_IO", "Win32_Storage_FileSystem", "Win32_Foundation", "Win32_Security"] }