Tiltility 1.2.2 — Hand tracking overhaul

Hand tracking has been rebuilt from the ground up on a new engine:

• Much more stable, hand rectangles and gesture icons no longer jitter or flicker; detection stays locked on even during fast movement.
• Faster, hands are now tracked from frame to frame, and the detector only re-runs when a hand is lost, roughly halving inference cost during normal use.
• GPU-accelerated, hand tracking now runs on your GPU (DirectML) with automatic CPU fallback, matching the head-tracking models.

Also in this update:

• Fixed the GPU setting having no effect for the Laser head-tracking model, it now genuinely runs on the GPU.
• More robust handling of the inference backend across all models, with automatic fallback to CPU when no compatible GPU is available.