feat: UX improvements + HAW FAD data + fishing mode plan

Dark mode:
- Force light mode (AppCompatDelegate.MODE_NIGHT_NO) in NavApplication

Log screen:
- Tracks sorted newest-first (sortedByDescending startMs)
- Photos/entries saved during a track tagged with trackId; ship's log
  shows only standalone entries (trackId == null)
- "Plan Trip" button moved from safety screen to log screen header row
- Pre-trip report auto-generates (newAutoInstance) when a track starts

Safety screen:
- Removed "Plan Trip" button (now in log screen)
- Quit button moved to top title row
- Anchor Watch section collapses by default (tap header to expand)
- Hardware Data Sources section collapses by default (tap header to expand)

Notifications + idle:
- Tracking notification becomes persistent (setOngoing true) while recording
- Notification title changes to "Recording track" when active
- App exits automatically after 3 hours of idle (resetIdleTimer via
  onUserInteraction + onResume; suspended while recording)

FAD layer:
- FadData.kt: 18 Hawaii Island DLNR FAD coordinates hardcoded
  (source: DLNR Division of Aquatic Resources 6/14/07)
- FAD GeoJSON populated on style load from static data

Fishing mode plan:
- docs/superpowers/plans/2026-06-30-fishing-mode.md: 7-task plan for
  RigAdvisor, SST tiles, FishingModeManager, FishingOverlayView, steering
  bearing line, and FAB integration

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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