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/Persisence/DataControllerUPDATE.swift

@@ -21,4 +21,34 @@ extension DataController {
         EventLogger.log(event: "update_entry")
         return true
     }
+
+    // MARK: - Notes
+
+    @discardableResult
+    func updateNotes(forDate date: Date, notes: String?) -> Bool {
+        guard let entry = getEntry(byDate: date) else {
+            return false
+        }
+
+        entry.notes = notes
+        saveAndRunDataListeners()
+
+        EventLogger.log(event: "update_notes")
+        return true
+    }
+
+    // MARK: - Photo
+
+    @discardableResult
+    func updatePhoto(forDate date: Date, photoID: UUID?) -> Bool {
+        guard let entry = getEntry(byDate: date) else {
+            return false
+        }
+
+        entry.photoID = photoID
+        saveAndRunDataListeners()
+
+        EventLogger.log(event: "update_photo")
+        return true
+    }
 }