v0.2.0 with GUI added

Changelog

Added

• GUI mode: Based on iced crate
  • Status display: OSC listening, BLE connection, battery level (from device BAS service)
  • Haptic values: progress bars and a "Test" button per motor for a short test pulse
  • Max intensity slider (0–100%) to cap haptic feedback strength
  • Quit button
• Headless mode: --headless flag to run without GUI (OSC to BLE bridge only)
• BLE: Battery service (BAS) support; report connection status and battery level to the GUI

Changed

• BLE client refactor: Connection struct, notify() / read_battery() helpers, Send + Sync error types for use with iced's async runtime
• Compactor applies max intensity (GUI slider) as a scale to haptic output
• Removed WiX/dist packaging (Cargo.toml metadata, dist-workspace.toml, wix/)
• Firmware: Device goes to sleep after 5 minutes of inactivity