- Corrected XML test data to remove unnecessary `<descr>` tags, resolving failing tests.
- Removed the unused `ratatui_utils` module and its associated code.
- Simplified example in `harmony_tui/src/lib.rs` to use `tokio::main` and register scores directly with `Maestro`. This aligns with the project's evolving structure.
Introduce the `Topology` trait to ensure that `Maestro` can compile-time safely bind compatible `Scores` and `Topologies`. This refactoring includes updating `HarmonyTuiEvent`, `ScoreListWidget`, and related structures to work with generic `Topology` types, enhancing type safety and modularity.
