feat(auth): Prevent tool selection after logout and improve state management

lib/core/auth/auth_state_manager.dart

@@ -10,6 +10,7 @@ import 'token_validator.dart';
 import 'auth_cache_manager.dart';
 import '../utils/debug_logger.dart';
 import '../utils/user_avatar_utils.dart';
+import '../../features/tools/providers/tools_providers.dart';
 
 part 'auth_state_manager.g.dart';
 
@@ -786,6 +787,7 @@ class AuthStateManager extends _$AuthStateManager {
       // Invalidate all auth-related providers to clear cached data
       ref.invalidate(activeServerProvider);
       ref.invalidate(serverConfigsProvider);
+      ref.invalidate(toolsListProvider);
 
       // Clear auth cache manager
       _cacheManager.clearAuthCache();

lib/core/providers/app_providers.dart

@@ -851,6 +851,16 @@ final modelToolsAutoSelectionProvider = Provider<void>((ref) {
   ref.keepAlive();
 
   Future<void> applyTools(Model? model) async {
+    // Skip if not authenticated - prevents API calls after logout
+    final authState = ref.read(authStateManagerProvider).asData?.value;
+    if (authState == null || !authState.isAuthenticated) {
+      final current = ref.read(selectedToolIdsProvider);
+      if (current.isNotEmpty) {
+        ref.read(selectedToolIdsProvider.notifier).set([]);
+      }
+      return;
+    }
+
     if (model == null) {
       final current = ref.read(selectedToolIdsProvider);
       if (current.isNotEmpty) {

lib/features/tools/providers/tools_providers.dart

@@ -43,6 +43,7 @@ class ToolsList extends _$ToolsList {
       return;
     }
     Future.microtask(() async {
+      if (!ref.mounted) return;
       await refresh();
     });
   }