v3.0.1

General Improvements

• Modernized packaging and project structure (pyproject.toml-first workflow, cleaner distribution setup).
• Improved overall code readability and maintainability with substantial refactoring across core modules.
• More robust annotation pipeline, including better handling of pre-annotated (anchored) fingering.
• Better defaults and safer option normalization (e.g., depth handling, measure limits, argument
  validation).
• Improved GUI usability and consistency (clearer controls, better status updates, keyboard shortcuts,
  cleaner layout).
• Stronger run feedback in terminal output (progress clarity and end-of-run summary).
• Better MusicXML/MXL handling and score compatibility improvements.
• Refined sample score set and score quality/provenance updates.
• Improved optional 3D/playback integration behavior and failure handling.
• Added standalone executable build support for basic usage (without advanced visualization dependencies).
• General repository hygiene improvements (ignored artifacts, cleaner docs, updated README guidance).