# Contributing Bug fixes, compatibility improvements, documentation, and tests are welcome. ## Development Checks Python CLI and cloud service: ```bash python -m unittest discover -s tests -p 'test_*.py' ``` Android app: ```bash cd android ./gradlew testDebugUnitTest assembleDebug ``` ## Contribution Guidelines - Keep each change focused, and add tests for behavioral changes. - Do not commit keys, passwords, tokens, real server addresses, user data, or local build configuration. - Do not add production databases, logs, APK files, signing files, or payment QR codes to the repository. - Report security issues privately according to [SECURITY.md](SECURITY.md). Do not disclose vulnerability details in public. Before opening a pull request, confirm that the Python tests and Android unit tests pass.