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/CreateWorkoutSupersetView.swift

@@ -11,7 +11,7 @@ struct CreateWorkoutSupersetView: View {
     @Binding var showAddExercise: Bool
     @ObservedObject var superset: CreateWorkoutSuperSet
     @ObservedObject var viewModel: WorkoutViewModel
-    
+
     var body: some View {
         Section(content: {
             AddSupersetView(
@@ -19,50 +19,58 @@ struct CreateWorkoutSupersetView: View {
                 viewModel: viewModel,
                 selectedCreateWorkoutSuperSet: $selectedCreateWorkoutSuperSet)
         }, header: {
-            VStack {
+            VStack(spacing: WerkoutTheme.sm) {
                 HStack {
                     TextField("Superset Title", text: $superset.title)
-                        .font(.title2)
+                        .font(WerkoutTheme.sectionTitle)
+                        .foregroundStyle(WerkoutTheme.accent)
                 }
-                
-                VStack {
+
+                VStack(spacing: WerkoutTheme.sm) {
                     HStack {
                         Text("Exercises: \(superset.exercises.count)")
-                            .font(.subheadline)
-                            .bold()
-                        
+                            .font(WerkoutTheme.caption)
+                            .foregroundStyle(WerkoutTheme.textSecondary)
+
                         Spacer()
-                        
+
                         Button(action: {
                             selectedCreateWorkoutSuperSet = superset
                             showAddExercise = true
                         }, label: {
                             Image(systemName: "dumbbell.fill")
                                 .font(.title2)
+                                .foregroundStyle(WerkoutTheme.accent)
                         })
                         .accessibilityLabel("Add exercise")
                         .accessibilityHint("Adds an exercise to this superset")
-                        
+
                         Divider()
-                        
+                            .overlay(WerkoutTheme.divider)
+
                         Button(action: {
                             viewModel.delete(superset: superset)
                         }, label: {
                             Image(systemName: "trash")
                                 .font(.title2)
+                                .foregroundStyle(WerkoutTheme.danger)
                         })
                         .accessibilityLabel("Delete superset")
                         .accessibilityHint("Removes this superset")
                     }
-                    
+
                     Divider()
-                    
+                        .overlay(WerkoutTheme.divider)
+
                     Stepper(label: {
                         HStack {
                             Text("Rounds: ")
-                            
+                                .font(WerkoutTheme.bodyText)
+                                .foregroundStyle(WerkoutTheme.textPrimary)
+
                             Text("\(superset.numberOfRounds)")
-                                .foregroundColor(superset.numberOfRounds > 0 ? Color(uiColor: .label) : .red)
+                                .foregroundColor(superset.numberOfRounds > 0 ? WerkoutTheme.textPrimary : WerkoutTheme.danger)
+                                .font(WerkoutTheme.bodyText)
                                 .bold()
                         }
                     }, onIncrement: {
@@ -70,8 +78,10 @@ struct CreateWorkoutSupersetView: View {
                     }, onDecrement: {
                         superset.decreaseNumberOfRounds()
                     })
+                    .tint(WerkoutTheme.accent)
                 }
             }
+            .padding(.vertical, WerkoutTheme.xs)
         })
     }
 }