- Introduce a comprehensive test suite (cli, app, board, tasks, audio)
and a
new TESTING.md document describing test execution.
- Correct vertical offset calculation in `BoardState` to use saturating
subtraction and ceiling division.
- Clamp initial `Offset` values to the provided maximum in
`Offset::new`.
- Export `load_audio` from the audio thread module and switch to
`LoopedDecoder` for proper OGG looping.
- Update several crate versions: clap, ratatui, log, rodio, and
bitflags.
