feat(sdk): 初始化 Android SDK 核心功能模块

- 添加 SDK 配置管理、网络请求客户端和令牌存储功能
- 实现即时通讯 IM 模块，包括消息收发、群组管理和会话功能
- 集成推送服务和应用更新功能模块
- 创建示例应用演示 SDK 使用方法
- 配置项目依赖管理和构建设置

packages/common/src/config.ts

@@ -1,6 +1,6 @@
 export interface XuqmInitOptions {
   appId: string
-  serverUrl: string    // e.g. "https://sentry.xuqinmin.com" — SDK fetches config from here
+  serverUrl: string    // e.g. "https://dev.xuqinmin.com" — SDK fetches config from here
   appKey?: string
   debug?: boolean
 }

packages/common/src/constants.ts

@@ -4,9 +4,9 @@
  * XuqmSDK.initialize(). These constants are kept only as fallback
  * references and for backward compatibility.
  */
-export const API_BASE_URL = 'https://sentry.xuqinmin.com'
+export const API_BASE_URL = 'https://dev.xuqinmin.com'
 
 /**
  * @deprecated See API_BASE_URL.
  */
-export const IM_WS_URL = 'wss://sentry.xuqinmin.com/ws/im'
+export const IM_WS_URL = 'wss://dev.xuqinmin.com/ws/im'

packages/common/src/sdk.ts

@@ -6,7 +6,7 @@ export const XuqmSDK = {
    * Recommended for production use.
    *
    * @param options.appId     - Your application ID (from the tenant platform)
-   * @param options.serverUrl - Base URL of the tenant platform, e.g. "https://sentry.xuqinmin.com"
+   * @param options.serverUrl - Base URL of the tenant platform, e.g. "https://dev.xuqinmin.com"
    * @param options.appKey    - Optional; defaults to appId
    * @param options.debug     - Enable verbose logging
    */
@@ -38,7 +38,7 @@ export const XuqmSDK = {
    * Kept for backward compatibility; prefer initialize() for production use.
    *
    * @param options.appId     - Your application ID (from the tenant platform)
-   * @param options.serverUrl - Base URL of the tenant platform, e.g. "https://sentry.xuqinmin.com"
+   * @param options.serverUrl - Base URL of the tenant platform, e.g. "https://dev.xuqinmin.com"
    * @param options.appKey    - Optional; defaults to appId
    * @param options.debug     - Enable verbose logging
    */