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Marc-André Bombeck
059ba571e3
Register four new derived metrics for the additive HealthKit signals: - WRIST_TEMPERATURE_BASELINE, STAIR_ASCENT_SPEED_BASELINE, STAIR_DESCENT_SPEED_BASELINE — any-user-baseline personal bands reusing the type-generic median +/- k*MAD engine via a new BASELINE_CAPABLE_TYPES allowlist. Wrist temperature is a personal-deviation band only (no illness or cycle inference); stair speeds are personal trend bands (no population cutoff, geometry-confounded). - SIX_MINUTE_WALK_BAND — passthrough re-frame placing the device-estimated distance against the Enright & Sherrill 1998 predicted 6MWD (ATS 2002 test standard), as percent-of-predicted with a green/yellow/red band; band null when age/height/weight/sex are incomplete. Fall count and the breathing-disturbance index stay trend-only by design, documented in the registry: fall count is a zero-inflated discrete safety event, the breathing index is a regulated screening signal where a derived band would imply a diagnosis. Note wrist temperature as a deferred correlation outcome channel held pending a privacy review (cycle-phase inference risk), mirroring the medication-compliance omission note. Add provenance + standards entries, method/caveat copy across all six locales, and tests for the engine routing, the Enright equation, and the percent-of-predicted band.