Fix 28 issues from deep audit and UI audit + redesign changes

Deep audit (issues 2-14):
- Add missing WCSession handlers for applicationContext and userInfo
- Fix BoundedFIFOQueue race condition with serial dispatch queue
- Fix timer race condition with main thread guarantee
- Fix watch pause state divergence — phone is now source of truth
- Fix wrong notification posted on logout (createdNewWorkout → userLoggedOut)
- Fix POST status check to accept any 2xx (was exact match)
- Fix @StateObject → @ObservedObject for injected viewModel
- Add pull-to-refresh to CompletedWorkoutsView
- Fix typos: RefreshUserInfoFetcable, defualtPackageModle
- Replace string concatenation with interpolation
- Replace 6 @StateObject with @ObservedObject for BridgeModule.shared
- Replace 7 hardcoded AVPlayer URLs with BaseURLs.currentBaseURL

UI audit (issues 1-15):
- Fix GeometryReader eating VStack space — replaced with .overlay
- Fix refreshable continuation resuming before fetch completes
- Remove duplicate @State workouts — derive from DataStore
- Decouple leaf views from BridgeModule (pass discrete values)
- Convert selectedIds from Array to Set for O(1) lookups
- Extract .sorted() from var body into computed properties
- Move search filter out of ForEach render loop
- Replace import SwiftUI with import Combine in non-UI classes
- Mark all @State properties private
- Extract L/R exercise auto-add logic to WorkoutViewModel
- Use enumerated() instead of .indices in ForEach
- Make AddSupersetView frame flexible instead of fixed 300pt
- Hoist Set construction out of per-exercise filter loop
- Move ViewModel network fetch from init to load()

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

iphone/Werkout_ios/subview/AddSupersetView.swift

@@ -10,37 +10,41 @@ struct AddSupersetView: View {
     @ObservedObject var createWorkoutSuperSet: CreateWorkoutSuperSet
     var viewModel: WorkoutViewModel
     @Binding var selectedCreateWorkoutSuperSet: CreateWorkoutSuperSet?
-    
+
     var body: some View {
         TabView {
             ForEach(createWorkoutSuperSet.exercises, id: \.id) { createWorkoutExercise in
-                VStack {
+                VStack(spacing: WerkoutTheme.sm) {
                     Text(createWorkoutExercise.exercise.name)
-                        .font(.title2)
+                        .font(WerkoutTheme.cardTitle)
+                        .foregroundStyle(WerkoutTheme.textPrimary)
                         .frame(maxWidth: .infinity)
                     if let side = createWorkoutExercise.exercise.side,
                        side.isEmpty == false {
                         Text(side)
-                            .font(.title3)
+                            .font(WerkoutTheme.bodyText)
+                            .foregroundStyle(WerkoutTheme.textSecondary)
                             .frame(maxWidth: .infinity, alignment: .center)
                     }
                     CreateExerciseActionsView(workoutExercise: createWorkoutExercise,
                                               superset: createWorkoutSuperSet,
                                               viewModel: viewModel)
                 }
-                .frame(width: 300.0)
+                .frame(maxWidth: .infinity)
+                .padding(.horizontal, WerkoutTheme.md)
                 .padding(.bottom, 40)
             }
         }
-        .frame(height: 300)
+        .frame(minHeight: 220, maxHeight: 320)
         .tabViewStyle(.page)
+        .background(WerkoutTheme.background)
         .onAppear {
             setupAppearance()
         }
     }
-    
+
     func setupAppearance() {
-        UIPageControl.appearance().currentPageIndicatorTintColor = .black
-        UIPageControl.appearance().pageIndicatorTintColor = UIColor.black.withAlphaComponent(0.2)
+        UIPageControl.appearance().currentPageIndicatorTintColor = UIColor(WerkoutTheme.accent)
+        UIPageControl.appearance().pageIndicatorTintColor = UIColor(WerkoutTheme.accent).withAlphaComponent(0.25)
     }
 }