Fix residence list not refreshing after add/edit on iOS and Android

Fixed issue where adding or editing a residence didn't update the residence
list, requiring manual refresh to see changes.

iOS Changes:
- ResidencesListView: Added onResidenceCreated callback to AddResidenceView
  sheet that triggers loadMyResidences(forceRefresh: true)
- AddResidenceView: Added onResidenceCreated callback parameter
- ResidenceFormView: Added onSuccess callback that fires before dismissing
  in both create and update modes

Android Changes:
- ResidencesScreen: Added shouldRefresh parameter with LaunchedEffect that
  watches for changes and reloads residences when flag is true
- App.kt (ResidencesRoute): Read "refresh" flag from saved state handle
- App.kt (AddResidenceRoute): Set "refresh" flag in previous back stack
  entry before navigating back on residence created
- App.kt (EditResidenceRoute): Set "refresh" flag before navigating back
  on residence updated

Both platforms now properly refresh the residence list when:
- A new residence is added
- An existing residence is edited
- User joins a residence with code (already working)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

composeApp/src/commonMain/kotlin/com/example/mycrib/App.kt

@@ -353,7 +353,10 @@ fun App(
                 )
             }
 
-            composable<ResidencesRoute> {
+            composable<ResidencesRoute> { backStackEntry ->
+                // Get refresh flag from saved state (set when returning from add/edit)
+                val shouldRefresh = backStackEntry.savedStateHandle.get<Boolean>("refresh") ?: false
+
                 ResidencesScreen(
                     onResidenceClick = { residenceId ->
                         navController.navigate(ResidenceDetailRoute(residenceId))
@@ -364,6 +367,7 @@ fun App(
                     onNavigateToProfile = {
                         navController.navigate(ProfileRoute)
                     },
+                    shouldRefresh = shouldRefresh,
                     onLogout = {
                         // Clear token and lookups on logout
                         TokenStorage.clearToken()
@@ -383,6 +387,8 @@ fun App(
                         navController.popBackStack()
                     },
                     onResidenceCreated = {
+                        // Set refresh flag before navigating back
+                        navController.previousBackStackEntry?.savedStateHandle?.set("refresh", true)
                         navController.popBackStack()
                     }
                 )
@@ -419,6 +425,8 @@ fun App(
                         navController.popBackStack()
                     },
                     onResidenceUpdated = {
+                        // Set refresh flag before navigating back
+                        navController.previousBackStackEntry?.savedStateHandle?.set("refresh", true)
                         navController.popBackStack()
                     }
                 )

composeApp/src/commonMain/kotlin/com/example/mycrib/ui/screens/ResidencesScreen.kt

@@ -34,6 +34,7 @@ fun ResidencesScreen(
     onAddResidence: () -> Unit,
     onLogout: () -> Unit,
     onNavigateToProfile: () -> Unit = {},
+    shouldRefresh: Boolean = false,
     viewModel: ResidenceViewModel = viewModel { ResidenceViewModel() }
 ) {
     val myResidencesState by viewModel.myResidencesState.collectAsState()
@@ -44,6 +45,13 @@ fun ResidencesScreen(
         viewModel.loadMyResidences()
     }
 
+    // Refresh when shouldRefresh flag changes
+    LaunchedEffect(shouldRefresh) {
+        if (shouldRefresh) {
+            viewModel.loadMyResidences(forceRefresh = true)
+        }
+    }
+
     // Handle refresh state
     LaunchedEffect(myResidencesState) {
         if (myResidencesState !is ApiResult.Loading) {