This workstream provides a watch-only CMMotionManager adapter and a pure calibrated classifier. The adapter is foreground/lifecycle-bound: it stops on inactive scene, relay loss, expiry, cancellation, or sensor failure. Samples are bounded and in memory only; no recording mode or raw traces are included.

The orientation transform (wrist side and crown orientation) and thresholds are versioned hypotheses pending physical validation. The package tests prove state-machine behavior only and are not evidence of reliable watch recognition.

Evaluation report (pending hardware)

No Apple Watch or TV has been tested for this workstream. Precision, recall, incidental-movement false triggers, and the direction confusion matrix remain pending physical evaluation; do not infer them from synthetic fixtures. The required report should include per-direction TP/FP/FN, precision/recall, duplicate count, false triggers per armed hour, and a 4x4 actual-vs-predicted matrix split by wrist and crown orientation.

See INTEGRATION-PROPOSAL.md for target membership, permission-string, and lifecycle integration requirements.