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/ExtCountdownView.swift

@@ -8,50 +8,55 @@
 import SwiftUI
 
 struct ExtCountdownView: View {
-    @StateObject var bridgeModule = BridgeModule.shared
-    
+    @ObservedObject var bridgeModule = BridgeModule.shared
+
     var body: some View {
         GeometryReader { metrics in
             VStack {
                 if let currenExercise = bridgeModule.currentWorkoutInfo.currentExercise {
                     HStack {
                         Text(currenExercise.exercise.extName)
-                            .font(.system(size: 200))
+                            .font(.system(size: 200, weight: .black, design: .rounded))
+                            .foregroundColor(WerkoutTheme.textPrimary)
                             .scaledToFit()
                             .minimumScaleFactor(0.01)
                             .lineLimit(1)
                             .frame(maxWidth: .infinity, alignment: .leading)
                     }
                     .frame(height: metrics.size.height * 0.5)
-                    
+
                     HStack {
                         if let duration = currenExercise.duration,
                            duration > 0 {
                             ProgressView(value: Float(bridgeModule.currentExerciseTimeLeft), total: Float(duration))
                                 .scaleEffect(x: 1, y: 6, anchor: .center)
+                                .tint(WerkoutTheme.accent)
                             Text("\(bridgeModule.currentExerciseTimeLeft)")
-                                .font(Font.system(size: 100))
+                                .font(WerkoutTheme.stat)
+                                .foregroundColor(WerkoutTheme.accent)
                                 .scaledToFit()
                                 .minimumScaleFactor(0.01)
                                 .lineLimit(1)
                                 .padding(.leading)
                                 .padding(.trailing, 100)
                         }
-                        
+
                         if let reps = currenExercise.reps,
                            reps > 0 {
                             Text(" X \(reps)")
-                                .font(Font.system(size: 100))
+                                .font(.system(size: 100, weight: .heavy, design: .monospaced))
+                                .foregroundColor(WerkoutTheme.textPrimary)
                                 .scaledToFit()
                                 .minimumScaleFactor(0.01)
                                 .lineLimit(1)
                                 .frame(maxWidth: .infinity, alignment: .leading)
                         }
-                        
+
                         if let weight = currenExercise.weight,
                            weight > 0 {
                             Text(" @ \(weight)")
-                                .font(Font.system(size: 100))
+                                .font(.system(size: 100, weight: .heavy, design: .monospaced))
+                                .foregroundColor(WerkoutTheme.textSecondary)
                                 .scaledToFit()
                                 .minimumScaleFactor(0.01)
                                 .lineLimit(1)