refactor: migrate to riverpod 3

lib/core/services/animation_service.dart

@@ -208,12 +208,29 @@ class AnimationService {
 enum PageTransitionType { fade, slide, scale }
 
 /// Provider for reduced motion preference
-final reducedMotionProvider = StateProvider<bool>((ref) => false);
+final reducedMotionProvider = NotifierProvider<ReducedMotionNotifier, bool>(
+  ReducedMotionNotifier.new,
+);
 
 /// Provider for animation performance settings
-final animationPerformanceProvider = StateProvider<AnimationPerformance>((ref) {
-  return AnimationPerformance.adaptive;
-});
+final animationPerformanceProvider =
+    NotifierProvider<AnimationPerformanceNotifier, AnimationPerformance>(
+      AnimationPerformanceNotifier.new,
+    );
+
+class ReducedMotionNotifier extends Notifier<bool> {
+  @override
+  bool build() => false;
+
+  void set(bool value) => state = value;
+}
+
+class AnimationPerformanceNotifier extends Notifier<AnimationPerformance> {
+  @override
+  AnimationPerformance build() => AnimationPerformance.adaptive;
+
+  void set(AnimationPerformance performance) => state = performance;
+}
 
 /// Animation performance levels
 enum AnimationPerformance {
@@ -225,8 +242,8 @@ enum AnimationPerformance {
 
 /// Provider for managing animation settings
 final animationSettingsProvider =
-    StateNotifierProvider<AnimationSettingsNotifier, AnimationSettings>(
-      (ref) => AnimationSettingsNotifier(),
+    NotifierProvider<AnimationSettingsNotifier, AnimationSettings>(
+      AnimationSettingsNotifier.new,
     );
 
 class AnimationSettings {
@@ -253,8 +270,9 @@ class AnimationSettings {
   }
 }
 
-class AnimationSettingsNotifier extends StateNotifier<AnimationSettings> {
-  AnimationSettingsNotifier() : super(const AnimationSettings());
+class AnimationSettingsNotifier extends Notifier<AnimationSettings> {
+  @override
+  AnimationSettings build() => const AnimationSettings();
 
   void setReduceMotion(bool reduce) {
     state = state.copyWith(reduceMotion: reduce);

lib/core/services/settings_service.dart

@@ -20,9 +20,11 @@ class SettingsService {
   static const String _voiceHoldToTalkKey = 'voice_hold_to_talk';
   static const String _voiceAutoSendKey = 'voice_auto_send_final';
   // Realtime transport preference
-  static const String _socketTransportModeKey = 'socket_transport_mode'; // 'auto' or 'ws'
+  static const String _socketTransportModeKey =
+      'socket_transport_mode'; // 'auto' or 'ws'
   // Quick pill visibility selections (max 2)
-  static const String _quickPillsKey = 'quick_pills'; // StringList of identifiers e.g. ['web','image','tools']
+  static const String _quickPillsKey =
+      'quick_pills'; // StringList of identifiers e.g. ['web','image','tools']
   // Chat input behavior
   static const String _sendOnEnterKey = 'send_on_enter';
 
@@ -335,9 +337,14 @@ class AppSettings {
       highContrast: highContrast ?? this.highContrast,
       largeText: largeText ?? this.largeText,
       darkMode: darkMode ?? this.darkMode,
-      defaultModel: defaultModel is _DefaultValue ? this.defaultModel : defaultModel as String?,
-      omitProviderInModelName: omitProviderInModelName ?? this.omitProviderInModelName,
-      voiceLocaleId: voiceLocaleId is _DefaultValue ? this.voiceLocaleId : voiceLocaleId as String?,
+      defaultModel: defaultModel is _DefaultValue
+          ? this.defaultModel
+          : defaultModel as String?,
+      omitProviderInModelName:
+          omitProviderInModelName ?? this.omitProviderInModelName,
+      voiceLocaleId: voiceLocaleId is _DefaultValue
+          ? this.voiceLocaleId
+          : voiceLocaleId as String?,
       voiceHoldToTalk: voiceHoldToTalk ?? this.voiceHoldToTalk,
       voiceAutoSendFinal: voiceAutoSendFinal ?? this.voiceAutoSendFinal,
       socketTransportMode: socketTransportMode ?? this.socketTransportMode,
@@ -363,7 +370,7 @@ class AppSettings {
         other.voiceAutoSendFinal == voiceAutoSendFinal &&
         other.sendOnEnter == sendOnEnter &&
         _listEquals(other.quickPills, quickPills);
-        // socketTransportMode intentionally not included in == to avoid frequent rebuilds
+    // socketTransportMode intentionally not included in == to avoid frequent rebuilds
   }
 
   @override
@@ -397,18 +404,27 @@ bool _listEquals(List<String> a, List<String> b) {
 }
 
 /// Provider for app settings
-final appSettingsProvider =
-    StateNotifierProvider<AppSettingsNotifier, AppSettings>(
-      (ref) => AppSettingsNotifier(),
-    );
+final appSettingsProvider = NotifierProvider<AppSettingsNotifier, AppSettings>(
+  AppSettingsNotifier.new,
+);
 
-class AppSettingsNotifier extends StateNotifier<AppSettings> {
-  AppSettingsNotifier() : super(const AppSettings()) {
-    _loadSettings();
+class AppSettingsNotifier extends Notifier<AppSettings> {
+  bool _initialized = false;
+
+  @override
+  AppSettings build() {
+    if (!_initialized) {
+      _initialized = true;
+      Future.microtask(_loadSettings);
+    }
+    return const AppSettings();
   }
 
   Future<void> _loadSettings() async {
     final settings = await SettingsService.loadSettings();
+    if (!ref.mounted) {
+      return;
+    }
     state = settings;
   }
 

lib/core/services/share_receiver_service.dart

@@ -25,7 +25,17 @@ class SharedPayload {
 }
 
 /// Holds a pending shared payload until the app is ready (e.g., authed + model loaded)
-final pendingSharedPayloadProvider = StateProvider<SharedPayload?>((_) => null);
+final pendingSharedPayloadProvider =
+    NotifierProvider<PendingSharedPayloadNotifier, SharedPayload?>(
+      PendingSharedPayloadNotifier.new,
+    );
+
+class PendingSharedPayloadNotifier extends Notifier<SharedPayload?> {
+  @override
+  SharedPayload? build() => null;
+
+  void set(SharedPayload? payload) => state = payload;
+}
 
 /// Initializes listening to OS share intents and handles them
 final shareReceiverInitializerProvider = Provider<void>((ref) {
@@ -45,7 +55,7 @@ final shareReceiverInitializerProvider = Provider<void>((ref) {
         model != null &&
         isOnChatRoute) {
       _processPayload(ref, pending);
-      ref.read(pendingSharedPayloadProvider.notifier).state = null;
+      ref.read(pendingSharedPayloadProvider.notifier).set(null);
     }
   }
 
@@ -70,7 +80,7 @@ final shareReceiverInitializerProvider = Provider<void>((ref) {
       final dynamic media = await handler.getInitialSharedMedia();
       final payload = _toPayload(media);
       if (payload.hasAnything) {
-        ref.read(pendingSharedPayloadProvider.notifier).state = payload;
+        ref.read(pendingSharedPayloadProvider.notifier).set(payload);
         maybeProcessPending();
       }
     } catch (e) {
@@ -83,7 +93,7 @@ final shareReceiverInitializerProvider = Provider<void>((ref) {
     try {
       final payload = _toPayload(media);
       if (payload.hasAnything) {
-        ref.read(pendingSharedPayloadProvider.notifier).state = payload;
+        ref.read(pendingSharedPayloadProvider.notifier).set(payload);
         maybeProcessPending();
       }
     } catch (e) {
@@ -178,10 +188,10 @@ Future<void> _processPayload(Ref ref, SharedPayload payload) async {
     // Prefill text in the composer (do not auto-send) and request focus
     final text = payload.text?.trim();
     if (text != null && text.isNotEmpty) {
-      ref.read(prefilledInputTextProvider.notifier).state = text;
+      ref.read(prefilledInputTextProvider.notifier).set(text);
       // Bump focus trigger to ensure input focuses after navigation/build
       final current = ref.read(inputFocusTriggerProvider);
-      ref.read(inputFocusTriggerProvider.notifier).state = current + 1;
+      ref.read(inputFocusTriggerProvider.notifier).set(current + 1);
     }
     // Do NOT create a server chat here. The chat is created on first send
     // (with server syncing + title generation) in chat_providers.dart.