- Redesign the watch app into an active-workout runner: a root gate shows the
in-progress workout's exercises or prompts to start one on iPhone, and each
exercise runs as a horizontally-paged HIIT cycle (count-up work, count-down
rest with final-three-second haptics + auto-advance, One More / Done on the
last set). Replaces the old history list.
- Add a configurable rest-between-sets duration in iPhone Settings (default 45s),
synced to the watch over WatchConnectivity.
- Launch the watch app into the session when a workout starts on the phone via
HealthKit (startWatchApp); the watch runs an HKWorkoutSession for foreground
runtime and ends it when the workout finishes. Adds the HealthKit entitlement +
Health usage strings on both targets and WKBackgroundModes on the watch.
Claude-Session: https://claude.ai/code/session_018gg69MaUetDNzWzBXisfMV
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