Per-instrument Styles in Single .mss File

Your idea

For each saved style, the file should contain the "master style" for the score and default part style, and list the adjustments needed for individual instruments. For example, the XML tag for "Tuba" would only contain the definitions for tuba-specific adjustments, which override the primary style defined above.

This would make it easier to blanket-adjust styles for an entire project without overriding instrument-specific needs.

Problem to be solved

With current system, I can either load one style file and manually adjust each instrument's style (move measure numbers to bottom for piccolo, adjust system spacing for tuba, etc) OR I can save/load a style file for each instrument, which leads to desynchronization between these files when I adjust a font/weight.

Prior art

No response

Additional context

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Checklist

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No source file or test is named. Begin by locating the .mss serialization and the XML handling for instrument-specific style tags, then compare how master, default-part, and instrument adjustments are saved and loaded. Done means one style file can preserve shared defaults while retaining instrument-specific overrides without desynchronization.