[BarMal]

Summary

Fixes #6.

This PR completes the existing codex/whoop-history-sleep-gates branch and addresses the WHOOP data sync issue where live heart rate could update while dashboard graphs stayed empty, and historical backfill could degrade from an initial connection failure into subsequent disconnected attempts.

What changed

• Decode and persist additional WHOOP historical/live records already present on this branch, including compact HR history and dashboard graph wiring.
• Repair missing hr_samples rows from previously captured raw IMU rows so older captures can populate the dashboard graphs without needing to recapture the same strap data.
• Refresh dashboard analytics after HR repair so pull-to-refresh/disconnect completion can update graphs immediately.
• Reset the GATT manager between retry attempts so failed handshakes do not poison later attempts with stale connected/connecting state.
• Fail pending connection/live/history waits immediately on BLE disconnect, allowing historical sync retries to happen instead of waiting for long timeouts.

Validation

• ./gradlew.bat :app:assembleDebug
• ./gradlew.bat testDebugUnitTest