chore: initial release

lib/core/models/user_settings.dart

@@ -0,0 +1,40 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'user_settings.freezed.dart';
+part 'user_settings.g.dart';
+
+@freezed
+sealed class UserSettings with _$UserSettings {
+  const factory UserSettings({
+    // Chat preferences
+    @Default(true) bool showReadReceipts,
+    @Default(true) bool enableNotifications,
+    @Default(false) bool enableSounds,
+    @Default('auto') String theme, // 'light', 'dark', 'auto'
+    // AI preferences
+    @Default(0.7) double temperature,
+    @Default(2048) int maxTokens,
+    @Default(false) bool streamResponses,
+    @Default(false) bool webSearchEnabled,
+
+    // Privacy settings
+    @Default(true) bool saveConversations,
+    @Default(false) bool shareUsageData,
+
+    // Interface preferences
+    @Default('comfortable')
+    String density, // 'compact', 'comfortable', 'spacious'
+    @Default(14.0) double fontSize,
+    @Default('en') String language,
+
+    // Accessibility settings
+    @Default(false) bool reduceMotion,
+    @Default(true) bool hapticFeedback,
+
+    // Advanced settings
+    @Default({}) Map<String, dynamic> customSettings,
+  }) = _UserSettings;
+
+  factory UserSettings.fromJson(Map<String, dynamic> json) =>
+      _$UserSettingsFromJson(json);
+}