Workers Android APK Download Proxy

Available routes:
- GET /android?file=xxx.apk - Download APK by URL parameter
- GET /android/xxx.apk      - Download APK by path parameter
- GET /health               - Health check

Usage examples:
- https://r2-251203.tb-box.bid/android?file=v1.0.77.apk
- https://r2-251203.tb-box.bid/android/v1.0.77.apk

Note: File name is required.