Heart v1.0.9 — Sleep diary removed, detection-quality indicator instead

What's new

No more manual sleep validation

• The morning sleep-diary prompt and the Insights diary-validation card are gone. Asking users to recall last night's bedtime/wake-time is unrealistic — most people don't remember accurately, and the prompt was friction without a payoff.
• Replaced with a Detection quality indicator on the Sleep snapshot card in Insights. It's a labelled bar (Low / Medium / High + percentage) that shows how confidently the rule-based stager classified the night. No user input required.
  • High — clean overnight HR signal, sustained low BPM, low variance: scores are solid.
  • Medium — some noise (band off-body briefly, fragmented sleep, late activity).
  • Low — atypical night: travel, illness, broken sleep, off-body for long stretches. Treat the detail as directional.
• Tap the (i) on the bar for the full explanation.

Files removed

• lib/src/core/sleep_diary.dart (store)
• lib/src/features/sleep_diary/ (morning prompt + bottom-sheet entry form)
• lib/src/features/insights/cards/diary_validation_card.dart
• SleepDiaryStore.initialize() from main.dart startup
• sleep_diary field from data export schema and import logic

Build

• heart-android.apk — arm64-v8a split, 22 MB. SHA-256: f92c4b1f1f612f936c7ca13fa49d36767216b69ae2f8150e498cb7952885bd9e
• heart-android-universal.apk — fat APK with all ABIs, 62 MB. SHA-256: 75e821c953e2a93f9749e200e4ce186b580a242ef9a1691e88bb141fc8d42c43
• Same release certificate as every prior version — clean upgrade from v1.0.8 / v1.0.6.