Add premium features and reorganize Settings tab

Premium Features:
- Journal notes and photo attachments for mood entries
- Data export (CSV and PDF reports)
- Privacy lock with Face ID/Touch ID
- Apple Health integration for mood correlation
- 4 new personality packs (Motivational Coach, Zen Master, Best Friend, Data Analyst)

Settings Tab Reorganization:
- Combined Customize and Settings into single tab with segmented control
- Added upgrade banner with trial countdown above segment
- "Why Upgrade?" sheet showing all premium benefits
- Subscribe button opens improved StoreKit 2 subscription view

UI Improvements:
- Enhanced subscription store with feature highlights
- Entry detail view for viewing/editing notes and photos
- Removed duplicate subscription banners from tab content

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

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

Shared/Random.swift

@@ -12,7 +12,15 @@ import SwiftData
 struct Constants {
     static let groupShareId = "group.com.tt.ifeel"
     static let groupShareIdDebug = "group.com.tt.ifeelDebug"
-    
+
+    static var currentGroupShareId: String {
+        #if DEBUG
+        return groupShareIdDebug
+        #else
+        return groupShareId
+        #endif
+    }
+
     static let viewsCornerRaidus: CGFloat = 10
 }