Add comprehensive tests for ast-grep and tree-sitter relationship extraction

- Introduced test suite for AstGrepPythonProcessor covering pattern definitions, parsing, and relationship extraction.
- Added comparison tests between tree-sitter and ast-grep for consistency in relationship extraction.
- Implemented tests for ast-grep binding module to verify functionality and availability.
- Ensured tests cover various scenarios including inheritance, function calls, and imports.

ccw/frontend/src/pages/SettingsPage.tsx

@@ -55,6 +55,7 @@ import {
   useCcwInstallations,
   useUpgradeCcwInstallation,
 } from '@/hooks/useSystemSettings';
+import { RemoteNotificationSection } from '@/components/settings/RemoteNotificationSection';
 
 // ========== File Path Input with Native File Picker ==========
 
@@ -1299,6 +1300,9 @@ export function SettingsPage() {
         </div>
       </Card>
 
+      {/* Remote Notifications */}
+      <RemoteNotificationSection />
+
       {/* Reset Settings */}
       <Card className="p-6 border-destructive/50">
         <h2 className="text-lg font-semibold text-foreground flex items-center gap-2 mb-4">