Fix memory leaks and add debug tools, remove ControlCenterTip

Memory optimization:
- Add onDisappear cleanup for repeatForever animations in LockScreenView
- Add onDisappear cleanup for animations in FeelsSubscriptionStoreView
- Add onDisappear cleanup in AddMoodHeaderView and PaywallPreviewSettingsView

Debug improvements:
- Add test data and clear data buttons to Settings (debug builds only)

TipKit changes:
- Remove ControlCenterTip (unused)
- Add TipKit-Tips.md documentation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/Apple-Features.md

@@ -126,7 +126,6 @@ This document covers the new Apple-specific features integrated into Feels, incl
 | WidgetVotingTip | Day view | After first mood log |
 | TimeViewTip | Day view header | After 2 days usage |
 | MoodStreakTip | Day view | When streak >= 3 |
-| ControlCenterTip | Settings | After 10 mood logs |
 
 ### How to Test
 1. Tips appear automatically based on conditions