fix: Android APK 다운로드 — @capacitor/browser 사용

Capacitor 7 App 플러그인에 openUrl이 없어 Browser.open으로 외부 다운로드 처리.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/android/app/capacitor.build.gradle

@@ -10,6 +10,7 @@ android {
 apply from: "../capacitor-cordova-android-plugins/cordova.variables.gradle"
 dependencies {
     implementation project(':capacitor-app')
+    implementation project(':capacitor-browser')
     implementation project(':capacitor-haptics')
     implementation project(':capacitor-preferences')
     implementation project(':capacitor-splash-screen')