Fix camera position switch to work in real-time

- Pass camera position from settings to CameraContainerView
- Add onChange handler to regenerate camera session when position changes
- Remove hardcoded .front camera position
- Camera now switches immediately when changed in settings

SelfieCam/Features/Camera/ContentView.swift

@@ -28,6 +28,7 @@ struct ContentView: View {
                 EquatableView(content: CameraContainerView(
                     settings: settings,
                     sessionKey: cameraSessionKey,
+                    cameraPosition: settings.cameraPosition,
                     onImageCaptured: { image in
                         handlePhotoCaptured(image)
                     }
@@ -79,6 +80,10 @@ struct ContentView: View {
                 settings.flashMode = settings.isRingLightEnabled ? .on : .off
             }
         }
+        .onChange(of: settings.cameraPosition) { _, _ in
+            // Force camera session recreation when camera position changes
+            cameraSessionKey = UUID()
+        }
         .sheet(isPresented: $showSettings) {
             SettingsView(viewModel: settings, showPaywall: $showPaywall)
         }
@@ -162,6 +167,7 @@ struct ContentView: View {
 struct CameraContainerView: View, Equatable {
     let settings: SettingsViewModel
     let sessionKey: UUID
+    let cameraPosition: CameraPosition
     let onImageCaptured: (UIImage) -> Void
 
     // Only compare sessionKey for equality - ignore settings and callback changes
@@ -170,7 +176,7 @@ struct CameraContainerView: View, Equatable {
     }
 
     var body: some View {
-        let _ = Design.debugLog("CameraContainerView body evaluated - sessionKey: \(sessionKey)")
+        let _ = Design.debugLog("CameraContainerView body evaluated - sessionKey: \(sessionKey), position: \(cameraPosition)")
         MCamera()
             .setCameraScreen { cameraManager, namespace, closeAction in
                 CustomCameraScreen(
@@ -182,9 +188,7 @@ struct CameraContainerView: View, Equatable {
                 )
             }
             .setCapturedMediaScreen(nil)
-            // Use front camera as default for selfie app - don't read from settings here
-            // to avoid triggering @Observable tracking which breaks the camera
-            .setCameraPosition(.front)
+            .setCameraPosition(cameraPosition)
             .startSession()
     }
 }