Initial commit: SmoothSchedule multi-tenant scheduling platform

This commit includes:
- Django backend with multi-tenancy (django-tenants)
- React + TypeScript frontend with Vite
- Platform administration API with role-based access control
- Authentication system with token-based auth
- Quick login dev tools for testing different user roles
- CORS and CSRF configuration for local development
- Docker development environment setup

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

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

frontend/src/hooks/usePlatformOAuth.ts

@@ -0,0 +1,36 @@
+/**
+ * Platform OAuth Settings Hooks
+ */
+
+import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
+import {
+  getPlatformOAuthSettings,
+  updatePlatformOAuthSettings,
+  PlatformOAuthSettings,
+  PlatformOAuthSettingsUpdate,
+} from '../api/platformOAuth';
+
+/**
+ * Hook to get platform OAuth settings
+ */
+export const usePlatformOAuthSettings = () => {
+  return useQuery<PlatformOAuthSettings>({
+    queryKey: ['platformOAuthSettings'],
+    queryFn: getPlatformOAuthSettings,
+    staleTime: 5 * 60 * 1000, // 5 minutes
+  });
+};
+
+/**
+ * Hook to update platform OAuth settings
+ */
+export const useUpdatePlatformOAuthSettings = () => {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: updatePlatformOAuthSettings,
+    onSuccess: (data) => {
+      queryClient.setQueryData(['platformOAuthSettings'], data);
+    },
+  });
+};