chore(MOB): v0.2 (versionCode 2) 릴리즈 빌드

- 앱 아이콘, 이름, 알림음 변경 반영

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

android/app/build.gradle

@@ -15,8 +15,8 @@ android {
         applicationId "com.codebridgex.webapp"
         minSdkVersion rootProject.ext.minSdkVersion
         targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode 1
-        versionName "0.1"
+        versionCode 2
+        versionName "0.2"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         aaptOptions {
              // Files and dirs to omit from the packaged assets dir, modified to accommodate modern web apps.