v1.2.5

[1.2.5]

Added

• --melody-preservation on [experimental] biases the duration
  optimizer's weights per note using the voice-role classifier below:
  melody gets cheaper ties and costlier rests (protect its continuity),
  accompaniment gets the opposite (declutter more freely). Off by
  default -- reuses the existing cost-minimizing optimizer rather than
  adding a second decision path, so it's purely a weight bias, not a new
  algorithm. Available in interactive mode's advanced options too. The
  report's "Voice Roles" section says outright whether it actually
  influenced a given run.
• New internal classify_voice_roles() pass tags every note as likely
  "melody" or "accompaniment" with a confidence score, using a
  skyline-plus-smoothing heuristic (highest simultaneous pitch, chord
  density, note length, and relative velocity). This is groundwork for
  future features (melody preservation, smarter hand assignment,
  voice-aware quantization, confidence warnings), not a feature by
  itself yet -- nothing about the actual engraving output changes.
  Verified byte-identical output before/after on a real test file. A new
  experimental "Voice Roles" section in the diagnostic report shows the
  melody/accompaniment split and average confidence per staff, so the
  heuristic can be checked against real pieces before anything is built
  on top of it.
• --profile {readable,balanced,faithful} sets tie-temperature, pedal
  mode, grid, and duration style all at once instead of tuning them
  individually. "readable" favors fewest ties for sight-reading/practice,
  "balanced" is the benchmark-tested sweet spot, "faithful" sticks
  closest to the original performance. Available in interactive mode too.
  Any of the four flags given explicitly still overrides the profile's
  value for that flag.
• report() now ends with a "Measures Needing Attention" section listing
  the measures with the most combined issues (chord conflicts, rests,
  heavy tie chains, cross-bar ties, invented sustain), so you can jump
  straight to the spots actually worth a manual look instead of scanning
  the whole score. Diagnostics only -- doesn't change engraving output.

Decided

• Closed out the question of whether the duration optimizer needs a
  voice-role-aware redesign (treating melody and accompaniment
  differently) for a future v1.3. A benchmark suite spanning 10 pieces
  across genres -- Bollywood, classical, jazz, film/anime, ambient --
  found no case where melody read well but accompaniment stayed
  cluttered in a way a global tie-temperature couldn't fix. The current
  global-tie-temperature optimizer stays as-is; no code changes.

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