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/api/platformOAuth.ts

@@ -0,0 +1,90 @@
+/**
+ * Platform OAuth Settings API
+ */
+
+import apiClient from './client';
+
+export interface OAuthProviderConfig {
+  enabled: boolean;
+  client_id: string;
+  client_secret: string;
+  // Apple-specific fields
+  team_id?: string;
+  key_id?: string;
+  // Microsoft-specific field
+  tenant_id?: string;
+}
+
+export interface PlatformOAuthSettings {
+  // Global setting
+  oauth_allow_registration: boolean;
+
+  // Provider configurations
+  google: OAuthProviderConfig;
+  apple: OAuthProviderConfig;
+  facebook: OAuthProviderConfig;
+  linkedin: OAuthProviderConfig;
+  microsoft: OAuthProviderConfig;
+  twitter: OAuthProviderConfig;
+  twitch: OAuthProviderConfig;
+}
+
+export interface PlatformOAuthSettingsUpdate {
+  oauth_allow_registration?: boolean;
+
+  // Google
+  oauth_google_enabled?: boolean;
+  oauth_google_client_id?: string;
+  oauth_google_client_secret?: string;
+
+  // Apple
+  oauth_apple_enabled?: boolean;
+  oauth_apple_client_id?: string;
+  oauth_apple_client_secret?: string;
+  oauth_apple_team_id?: string;
+  oauth_apple_key_id?: string;
+
+  // Facebook
+  oauth_facebook_enabled?: boolean;
+  oauth_facebook_client_id?: string;
+  oauth_facebook_client_secret?: string;
+
+  // LinkedIn
+  oauth_linkedin_enabled?: boolean;
+  oauth_linkedin_client_id?: string;
+  oauth_linkedin_client_secret?: string;
+
+  // Microsoft
+  oauth_microsoft_enabled?: boolean;
+  oauth_microsoft_client_id?: string;
+  oauth_microsoft_client_secret?: string;
+  oauth_microsoft_tenant_id?: string;
+
+  // Twitter (X)
+  oauth_twitter_enabled?: boolean;
+  oauth_twitter_client_id?: string;
+  oauth_twitter_client_secret?: string;
+
+  // Twitch
+  oauth_twitch_enabled?: boolean;
+  oauth_twitch_client_id?: string;
+  oauth_twitch_client_secret?: string;
+}
+
+/**
+ * Get platform OAuth settings
+ */
+export const getPlatformOAuthSettings = async (): Promise<PlatformOAuthSettings> => {
+  const { data } = await apiClient.get('/api/platform/settings/oauth/');
+  return data;
+};
+
+/**
+ * Update platform OAuth settings
+ */
+export const updatePlatformOAuthSettings = async (
+  settings: PlatformOAuthSettingsUpdate
+): Promise<PlatformOAuthSettings> => {
+  const { data } = await apiClient.post('/api/platform/settings/oauth/', settings);
+  return data;
+};