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_watch Watch App/WatchMainViewModel.swift

@@ -18,9 +18,9 @@ class WatchMainViewModel:  NSObject, ObservableObject  {
     
     var session: WCSession
     
-    @Published var watchPackageModel = WatchMainViewModel.defualtPackageModle
+    @Published var watchPackageModel = WatchMainViewModel.defaultPackageModel
     
-    static var defualtPackageModle: WatchPackageModel {
+    static var defaultPackageModel: WatchPackageModel {
         WatchPackageModel(currentExerciseName: "", currentExerciseID: -1, currentTimeLeft: -1, workoutStartDate: Date())
     }
         
@@ -66,7 +66,6 @@ class WatchMainViewModel:  NSObject, ObservableObject  {
     func pauseWorkout() {
         send(.pauseWorkout)
         WKInterfaceDevice.current().play(.start)
-        WatchWorkout.shared.togglePaused()
     }
     
     func dataToAction(messageData: Data) {
@@ -81,10 +80,10 @@ class WatchMainViewModel:  NSObject, ObservableObject  {
                     }
                     self.watchPackageModel = newWatchPackageModel
                 case .reset:
-                    self.watchPackageModel = WatchMainViewModel.defualtPackageModle
+                    self.watchPackageModel = WatchMainViewModel.defaultPackageModel
                     WatchWorkout.shared.stopWorkout(sendDetails: false)
                 case .endWorkout:
-                    self.watchPackageModel = WatchMainViewModel.defualtPackageModle
+                    self.watchPackageModel = WatchMainViewModel.defaultPackageModel
                     WatchWorkout.shared.stopWorkout(sendDetails: true)
                 case .startWorkout:
                     WatchWorkout.shared.startWorkout()