Add DEMO feature to the project

frontend/src/api/services/demo.ts

@@ -0,0 +1,83 @@
+/**
+ * Demo Session API Service
+ * Manages demo session creation, extension, and cleanup
+ */
+
+import { apiClient } from '../client';
+
+export interface DemoAccount {
+  account_type: string;
+  email: string;
+  name: string;
+  password: string;
+  description?: string;
+  features?: string[];
+  business_model?: string;
+}
+
+export interface DemoSession {
+  session_id: string;
+  virtual_tenant_id: string;
+  base_demo_tenant_id: string;
+  demo_account_type: string;
+  status: 'active' | 'expired' | 'destroyed';
+  created_at: string;
+  expires_at: string;
+  remaining_extensions: number;
+}
+
+export interface CreateSessionRequest {
+  demo_account_type: 'individual_bakery' | 'central_baker';
+}
+
+export interface ExtendSessionRequest {
+  session_id: string;
+}
+
+export interface DestroySessionRequest {
+  session_id: string;
+}
+
+/**
+ * Get available demo accounts
+ */
+export const getDemoAccounts = async (): Promise<DemoAccount[]> => {
+  return await apiClient.get<DemoAccount[]>('/demo/accounts');
+};
+
+/**
+ * Create a new demo session
+ */
+export const createDemoSession = async (
+  request: CreateSessionRequest
+): Promise<DemoSession> => {
+  return await apiClient.post<DemoSession>('/demo/session/create', request);
+};
+
+/**
+ * Extend an existing demo session
+ */
+export const extendDemoSession = async (
+  request: ExtendSessionRequest
+): Promise<DemoSession> => {
+  return await apiClient.post<DemoSession>('/demo/session/extend', request);
+};
+
+/**
+ * Destroy a demo session
+ */
+export const destroyDemoSession = async (
+  request: DestroySessionRequest
+): Promise<{ message: string }> => {
+  return await apiClient.post<{ message: string }>(
+    '/demo/session/destroy',
+    request
+  );
+};
+
+/**
+ * Get demo session statistics
+ */
+export const getDemoStats = async (): Promise<any> => {
+  return await apiClient.get('/demo/stats');
+};