Fix lint errors: remove unused imports and split multi-import line

Add sensor fusion skeleton with Kalman filter implementation

Add usage examples

Add GitHub Actions CI pipeline

Add Docker support for gesture API server

Add test suite for classifier, API endpoints, and training pipeline

add pyproject.toml for modern Python packaging

add docs, README, and contributing guide

add standalone detector loop + latency benchmark

add Unity client + OpenXR abstraction layer

add ONNX training pipeline and inference wrapper

add FastAPI server with WebSocket streaming

bootstrap: MediaPipe hand detection + rule-based classifier