feat: 包名改为 com.witClean.watch 实现旧版无缝升级

applicationId 从 com.xiaoqu.watch 改为 com.witClean.watch（和旧版一致）
versionCode 从 1 改为 183（旧版是 182），系统识别为升级
代码内部 package 保持 com.xiaoqu.watch 不变
使用旧版同一签名证书 witcleaning2.keystore 打包

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/build.gradle.kts

@@ -10,10 +10,10 @@ android {
     compileSdk = 36
 
     defaultConfig {
-        applicationId = "com.xiaoqu.watch"
+        applicationId = "com.witClean.watch"
         minSdk = 27
         targetSdk = 27
-        versionCode = 1
+        versionCode = 183
         versionName = "2.0.0"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"