feat(aigc): fully integrate backend API and replace mock data

- Replace all static mock data with real backend API calls for templates, generation tasks, credit balance and recharge
- Remove deprecated mock data files including templates.js, versionOptions.js, records.js and packages.js
- Add useCurrentCredit composable for fetching and managing user credit balance
- Update all components to align with new backend data shapes (e.g. templateItemId instead of id)
- Add loading and disabled states for interactive UI elements
- Implement full WeChat mini-program payment flow for credit recharge
- Fix template and record card UI styling and media handling
- Set developVersion flag to true for testing environment

src/request/base/config.js

@@ -7,7 +7,7 @@ import { getServiceUrl } from "../api/GetServiceUrlApi";
 const versionValue = "1.1.3";
 
 /// 是否是测试版本， 测试版本为true， 发布版本为false
-const developVersion = false;
+const developVersion = true;
 
 // 获取服务地址
 const getEvnUrl = async () => {