Fix build errors, resolve all warnings, and improve code quality

Widget Extension Fixes:
- Create standalone WidgetDataProvider for widget data isolation
- Add WIDGET_EXTENSION compiler flag for conditional compilation
- Fix DataController references in widget-shared files
- Sync widget version numbers with main app (23, 1.0.2)
- Add WidgetBackground color to asset catalog

Warning Resolutions:
- Fix UIScreen.main deprecation in BGView and SharingListView
- Fix Text '+' concatenation deprecation in PurchaseButtonView and SettingsTabView
- Fix exhaustive switch in BiometricAuthManager (add .none case)
- Fix var to let in ExportService (3 instances)
- Fix unused result warning in NoteEditorView
- Fix ForEach duplicate ID warnings in MonthView and YearView

Code Quality Improvements:
- Wrap bypassSubscription in #if DEBUG for security
- Rename StupidAssCustomWidgetObservableObject to CustomWidgetStateViewModel
- Add @MainActor to IconViewModel
- Replace fatalError with graceful fallback in SharedModelContainer
- Add [weak self] to closures in DayViewViewModel
- Add OSLog-based AppLogger for production logging
- Add ImageCache with NSCache for memory efficiency
- Add AccessibilityHelpers with Reduce Motion support
- Create DataControllerProtocol for dependency injection
- Update .gitignore with secrets exclusions

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

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

Shared/Views/MonthView/MonthDetailView.swift

@@ -13,7 +13,7 @@ struct MonthDetailView: View {
     @AppStorage(UserDefaultsStore.Keys.moodTint.rawValue, store: GroupUserDefaults.groupDefaults) private var moodTint: MoodTints = .Default
     @AppStorage(UserDefaultsStore.Keys.textColor.rawValue, store: GroupUserDefaults.groupDefaults) private var textColor: Color = DefaultTextColor.textColor
 
-    @StateObject private var shareImage = StupidAssShareObservableObject()
+    @StateObject private var shareImage = ShareImageStateViewModel()
 
     @State private var showingSheet = false
     @State private var selectedEntry: MoodEntryModel?
@@ -58,8 +58,8 @@ struct MonthDetailView: View {
                         impactMed.impactOccurred()
                         
                         let _image = self.image
-                        self.shareImage.showFuckingSheet = true
-                        self.shareImage.fuckingWrappedShrable = _image
+                        self.shareImage.showSheet = true
+                        self.shareImage.selectedShareImage = _image
                     }
             }
             .background(
@@ -81,8 +81,8 @@ struct MonthDetailView: View {
         .background(
             theme.currentTheme.bg
         )
-        .sheet(isPresented: self.$shareImage.showFuckingSheet) {
-            if let uiImage = self.shareImage.fuckingWrappedShrable {
+        .sheet(isPresented: self.$shareImage.showSheet) {
+            if let uiImage = self.shareImage.selectedShareImage {
                 ShareSheet(photo: uiImage)
             }
         }

Shared/Views/MonthView/MonthView.swift

@@ -18,20 +18,20 @@ struct MonthView: View {
 
     @AppStorage(UserDefaultsStore.Keys.shape.rawValue, store: GroupUserDefaults.groupDefaults) private var shape: BGShape = .circle
 
-    @StateObject private var shareImage = StupidAssShareObservableObject()
+    @StateObject private var shareImage = ShareImageStateViewModel()
 
     // store a value that gets changed when user updates custom colors to update the view since the moodTint doesn't change
     @AppStorage(UserDefaultsStore.Keys.customMoodTintUpdateNumber.rawValue, store: GroupUserDefaults.groupDefaults) private var customMoodTintUpdateNumber: Int = 0
 
     @EnvironmentObject var iapManager: IAPManager
-    @StateObject private var selectedDetail = StupidAssDetailViewObservableObject()
+    @StateObject private var selectedDetail = DetailViewStateViewModel()
     @State private var showingSheet = false
     @StateObject private var onboardingData = OnboardingDataDataManager.shared
     @StateObject private var filteredDays = DaysFilterClass.shared
 
-    class StupidAssDetailViewObservableObject: ObservableObject {
-        @Published var fuckingWrapped: MonthDetailView? = nil
-        @Published var showFuckingSheet = false
+    class DetailViewStateViewModel: ObservableObject {
+        @Published var selectedItem: MonthDetailView? = nil
+        @Published var showSheet = false
     }
 
     // Heatmap-style grid with tight spacing
@@ -70,12 +70,12 @@ struct MonthView: View {
                                             entries: entries,
                                             parentViewModel: viewModel
                                         )
-                                        selectedDetail.fuckingWrapped = detailView
-                                        selectedDetail.showFuckingSheet = true
+                                        selectedDetail.selectedItem = detailView
+                                        selectedDetail.showSheet = true
                                     },
                                     onShare: { image in
-                                        shareImage.fuckingWrappedShrable = image
-                                        shareImage.showFuckingSheet = true
+                                        shareImage.selectedShareImage = image
+                                        shareImage.showSheet = true
                                     }
                                 )
                             }
@@ -139,12 +139,12 @@ struct MonthView: View {
             theme.currentTheme.bg
                 .edgesIgnoringSafeArea(.all)
         )
-        .sheet(isPresented: $selectedDetail.showFuckingSheet,
+        .sheet(isPresented: $selectedDetail.showSheet,
                 onDismiss: didDismiss) {
-            selectedDetail.fuckingWrapped
+            selectedDetail.selectedItem
         }
-        .sheet(isPresented: self.$shareImage.showFuckingSheet) {
-            if let uiImage = self.shareImage.fuckingWrappedShrable {
+        .sheet(isPresented: self.$shareImage.showSheet) {
+            if let uiImage = self.shareImage.selectedShareImage {
                 ImageOnlyShareSheet(photo: uiImage)
             }
         }
@@ -157,8 +157,8 @@ struct MonthView: View {
 
 
     func didDismiss() {
-        selectedDetail.showFuckingSheet = false
-        selectedDetail.fuckingWrapped = nil
+        selectedDetail.showSheet = false
+        selectedDetail.selectedItem = nil
     }
 }
 
@@ -329,8 +329,8 @@ struct MonthCard: View {
 
             // Weekday Labels
             HStack(spacing: 2) {
-                ForEach(weekdayLabels, id: \.self) { day in
-                    Text(day)
+                ForEach(weekdayLabels.indices, id: \.self) { index in
+                    Text(weekdayLabels[index])
                         .font(.caption2.weight(.medium))
                         .foregroundColor(textColor.opacity(0.5))
                         .frame(maxWidth: .infinity)
@@ -384,6 +384,26 @@ struct HeatmapCell: View {
         RoundedRectangle(cornerRadius: 4)
             .fill(cellColor)
             .aspectRatio(1, contentMode: .fit)
+            .accessibilityLabel(accessibilityDescription)
+            .accessibilityHint(entry.mood != .placeholder && entry.mood != .missing ? "Double tap to edit" : "")
+    }
+
+    private var accessibilityDescription: String {
+        if entry.mood == .placeholder {
+            return "Empty day"
+        } else if entry.mood == .missing {
+            return "No mood logged for \(formattedDate)"
+        } else if !isFiltered {
+            return "\(formattedDate): \(entry.mood.strValue) (filtered out)"
+        } else {
+            return "\(formattedDate): \(entry.mood.strValue)"
+        }
+    }
+
+    private var formattedDate: String {
+        let formatter = DateFormatter()
+        formatter.dateStyle = .medium
+        return formatter.string(from: entry.forDate)
     }
 
     private var cellColor: Color {