tools/compose_music.py synthesises chip instruments and writes FastTracker 2 XM files
(editable in MilkyTracker). The title leitmotif runs through all pieces: title,
three build tracks, two battle tracks, victory and defeat jingles.
Validated with libopenmpt; instrument tuning checked (A4 = 440 Hz).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
