The HKWorkoutSession could only ever be born via the phone's one-shot
startWatchApp handoff (BULLETPROOFING.md H1-H3): a dropped handoff, a
watch crash/reboot, or a run engaged manually on the wrist left the
whole workout sessionless - no heart rate, no Health save, app
suspending wrist-down - and "End Current & Start New" swallowed the
handoff against the old session's idempotency guard.
Now the coordinator self-starts a session on any reconcile that finds
an active run with none running (SessionEndPlanner.shouldStart /
runToStart, activity type from the run's split), recover() re-adopts a
crash-orphaned session at launch, and a system-ended session salvages
its Health save instead of dropping it. A .finish decided for a
session younger than 30s demotes to .discard so the stale-context
races can't save junk workouts attributed to the wrong run; parallel
completions now pick the survivor deterministically.
Claude-Session: https://claude.ai/code/session_01PVNBVKp5bcq52X722uMjwT
Watch root lists every in-progress workout; picking an exercise runs a paged Ready -> work/rest -> Finish flow (One More + auto-firing Done), with a phase-dot row and brand-tinted count-up/down timers. Includes the configurable rest and auto-finish settings synced over WatchConnectivity and the wrist-down timer fix.
- 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
rzen