v1.2.4 - TrackPoint & Selection-Delete Modes

NEW FEATURES:

• TrackPoint Mode - Hold nav key to enter joystick cursor control
  - Move finger in any direction, cursor follows proportionally
  - Diagonal movement support (NE moves up+right)
  - Speed scales with distance from center

• Selection-Delete Mode - Short swipe + hold backspace
  - Swipe left/right/up/down to select text
  - Release to delete selection
  - Configurable vertical threshold and speed

• Settings Search - Find any setting instantly
  - Real-time filtering with keyword synonyms
  - Scrolls to setting with pulse highlight

• Granular Haptic Feedback - Per-event controls
  - Toggle haptics for: key press, predictions, TrackPoint, etc.

• Short Swipe Calibration - Practice and tune gestures

FIXES:
• Auto-capitalization now works after periods
• Double-space-to-period toggle added
• Updated US QWERTY layout subkeys
• Fixed suggestion selection returning wrong word (issue #63)
• Fixed WordPredictor not loading language pack dictionaries
