[0xbrayo]

Daemon startup exits if ActivityWatch is not ready, and unwrapping local-time conversions can abort the process during DST transitions.

• Retry daemon readiness requests up to five times with 1/2/4/8-second backoff. Read shared opt-in settings only after readiness succeeds; manual check-ins remain fail-fast.
• Use Jiff for local scheduling and resolve each daily query boundary at 04:00 local, allowing 23/25-hour days. Use calendar arithmetic for yesterday and wall-clock arithmetic for new-day detection.
• Schedule the next civil hour using Jiff’s default gap/fold resolution, rounding forward after half-hour gaps. During fall-back, the repeated hour gets one scheduled check-in. Scheduling errors are logged and retried without panicking.

Chrono remains at the ActivityWatch API boundary. Jiff replaces the custom DST searches and the chrono-tz test dependency.

Validation: workspace tests, Clippy with warnings denied, formatting, and the opt-in/startup/heartbeat integration suite. DST regressions cover spring-forward, fall-back, half-hour transitions, fractional-offset zones, and 04:00 boundaries across 23/24/25-hour days.

[0xbrayo]

🤖 Claude, on behalf of @0xbrayo

@greptile review

[ErikBjare]

@TimeToBuildBob review