Fix 8 audit items: remove force-unwraps, improve accessibility and concurrency

- Replace force-unwrap HK types with modern HKQuantityType(_:) initializer
- Replace Calendar.date force-unwraps with guard/let in HealthService, HeaderPercView, MoodStreakActivity, DayViewViewModel, MonthTotalTemplate
- Extract DayViewViewModel.countEntries into testable static method with safe flatMap
- Replace DispatchQueue.main.asyncAfter with Task.sleep in CelebrationAnimations
- Add .minimumScaleFactor(0.5) to SmallRollUpHeaderView for Dynamic Type
- Add VoiceOver accessibility labels to HeaderPercView mood percentages
- Fix @testable import iFeel → Feels in Tests_iOS.swift
- Add 4 unit tests for countEntries (TDD)

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

Shared/Views/CelebrationAnimations.swift

@@ -106,7 +106,8 @@ struct CelebrationOverlayView: View {
         .frame(maxWidth: .infinity, maxHeight: .infinity)
         .onAppear {
             hasAppeared = true
-            DispatchQueue.main.asyncAfter(deadline: .now() + animationType.duration) {
+            Task { @MainActor in
+                try? await Task.sleep(for: .seconds(animationType.duration))
                 onComplete()
             }
         }
@@ -341,7 +342,8 @@ struct ShatterReformAnimation: View {
             }
 
             // Phase 2: Converge to center and fade
-            DispatchQueue.main.asyncAfter(deadline: .now() + 0.6) {
+            Task { @MainActor in
+                try? await Task.sleep(for: .seconds(0.6))
                 phase = .reform
                 withAnimation(.easeInOut(duration: 0.5)) {
                     for i in 0..<shardCount {
@@ -353,14 +355,16 @@ struct ShatterReformAnimation: View {
             }
 
             // Phase 3: Show checkmark
-            DispatchQueue.main.asyncAfter(deadline: .now() + 1.1) {
+            Task { @MainActor in
+                try? await Task.sleep(for: .seconds(1.1))
                 withAnimation(.spring(response: 0.3, dampingFraction: 0.6)) {
                     checkmarkOpacity = 1
                 }
             }
 
             // Phase 4: Fade out
-            DispatchQueue.main.asyncAfter(deadline: .now() + 1.8) {
+            Task { @MainActor in
+                try? await Task.sleep(for: .seconds(1.8))
                 withAnimation(.easeOut(duration: 0.3)) {
                     checkmarkOpacity = 0
                 }

Shared/Views/DayView/DayViewViewModel.swift

@@ -20,15 +20,12 @@ class DayViewViewModel: ObservableObject {
     }
 
     private var numberOfEntries: Int {
-        var num = 0
-        grouped.keys.forEach({
-            let year = grouped[$0]
-            let monthKeys = year?.keys
-            monthKeys?.forEach({
-                num += year![$0]!.count
-            })
-        })
-        return num
+        Self.countEntries(in: grouped)
+    }
+
+    /// Count total entries across all year/month groups. Extracted for testability.
+    static func countEntries(in grouped: [Int: [Int: [MoodEntryModel]]]) -> Int {
+        grouped.values.flatMap(\.values).reduce(0) { $0 + $1.count }
     }
 
     init(addMonthStartWeekdayPadding: Bool) {
@@ -90,8 +87,8 @@ class DayViewViewModel: ObservableObject {
         let forDate = entry.forDate
 
         let components = Calendar.current.dateComponents([.day, .month, .year], from: forDate)
-        let month = components.month!
-        let year = components.year!
+        let month = components.month ?? 1
+        let year = components.year ?? Calendar.current.component(.year, from: Date())
 
         let monthName = Random.monthName(fromMonthInt: month)
         let weekday = Random.weekdayName(fromDate: entry.forDate)

Shared/Views/HeaderPercView.swift

@@ -32,10 +32,10 @@ struct HeaderPercView: View {
         if fakeData {
             moodEntries = DataController.shared.randomEntries(count: 10)
         } else {
-            var daysAgo = Calendar.current.date(byAdding: .day, value: -backDays, to: Date())!
-            daysAgo = Calendar.current.date(bySettingHour: 0, minute: 0, second: 0, of: daysAgo)!
-
-            moodEntries = DataController.shared.getData(startDate: daysAgo, endDate: Date(), includedDays: [1,2,3,4,5,6,7])
+            if let daysAgoRaw = Calendar.current.date(byAdding: .day, value: -backDays, to: Date()),
+               let daysAgo = Calendar.current.date(bySettingHour: 0, minute: 0, second: 0, of: daysAgoRaw) {
+                moodEntries = DataController.shared.getData(startDate: daysAgo, endDate: Date(), includedDays: [1,2,3,4,5,6,7])
+            }
         }
         
         if let moodEntries = moodEntries {
@@ -57,6 +57,7 @@ struct HeaderPercView: View {
                         .fontWeight(.bold)
                         .foregroundColor(moodTint.color(forMood: model.mood))
                         .frame(maxWidth: .infinity)
+                        .accessibilityLabel("\(model.mood.strValue) \(Int(model.percent)) percent")
                 }
             }
             Spacer()
@@ -67,6 +68,7 @@ struct HeaderPercView: View {
                         .fontWeight(.bold)
                         .foregroundColor(moodTint.color(forMood: model.mood))
                         .frame(maxWidth: .infinity)
+                        .accessibilityLabel("\(model.mood.strValue) \(Int(model.percent)) percent")
                 }
             }
             Spacer()
@@ -82,6 +84,7 @@ struct HeaderPercView: View {
                                bgColor: moodTint.color(forMood: model.mood),
                                textColor: textColor)
                     .frame(maxWidth: .infinity, maxHeight: .infinity)
+                    .accessibilityLabel("\(model.mood.strValue) \(Int(model.percent)) percent")
                 }
             }
             Spacer()
@@ -91,6 +94,7 @@ struct HeaderPercView: View {
                                bgColor: moodTint.color(forMood: model.mood),
                                textColor: textColor)
                     .frame(maxWidth: .infinity, maxHeight: .infinity)
+                    .accessibilityLabel("\(model.mood.strValue) \(Int(model.percent)) percent")
                 }
             }
             Spacer()

Shared/Views/SharingTemplates/MonthTotalTemplate.swift

@@ -17,7 +17,7 @@ struct MonthTotalTemplate: View, SharingTemplate {
     var endDate: Date
     var totalEntryCount: Int = 0
     
-    private var month = Calendar.current.dateComponents([.month], from: Date()).month!
+    private var month = Calendar.current.dateComponents([.month], from: Date()).month ?? 1
     
     @State var showSharingTemplate = false
     @StateObject private var shareImage = ShareImageStateViewModel()

Shared/Views/SmallRollUpHeaderView.swift

@@ -43,6 +43,7 @@ struct SmallRollUpHeaderView: View {
                     .font(.title2)
                     .fontWeight(.bold)
                     .lineLimit(1)
+                    .minimumScaleFactor(0.5)
                     .foregroundColor(moodTint.color(forMood: model.mood))
                     .frame(maxWidth: .infinity, alignment: .center)
             }