Rebrand the entire application from "胡萝卜社区" (Carrot BBS) to "威友" (WithYou), including:

- Update app name, package name (skin.carrot.bbs → cn.qczlit.withyou), and bundle identifier
- Update API endpoints (bbs.littlelan.cn → withyou.littlelan.cn)
- Update URL scheme (carrotbbs:// → withyou://)
- Rename database from carrot_bbs to with_you
- Update CI/CD pipeline image names and artifact naming
- Add Android signing configuration for release builds
- Update all UI text and comments throughout the codebase
- Refactor registerStore to use in-memory state instead of AsyncStorage persistence
- Improve WebRTC track handling and call stream management
- Add metro platform resolution for native platform support

BREAKING app package, database, and URLs are no longer valid

src/services/core/api.ts

@@ -11,13 +11,13 @@ import { Platform } from 'react-native';
 
 import { eventBus } from '@/core/events/EventBus';
 
-// 生产地址 https://bbs.littlelan.cn
+// 生产地址 https://withyou.littlelan.cn
 const getBaseUrl = () => {
   const configuredBaseUrl = Constants.expoConfig?.extra?.apiBaseUrl;
   if (typeof configuredBaseUrl === 'string' && configuredBaseUrl.trim().length > 0) {
     return configuredBaseUrl;
   }
-  return 'https://bbs.littlelan.cn/api/v1';
+  return 'https://withyou.littlelan.cn/api/v1';
 };
 
 const BASE_URL = getBaseUrl();