Replace the reused gameover music for game_over==3 with an original
192-step (24-chord) finale piece: a descending D-minor lament
(Dm-C-Bb-A7) that intensifies with high arpeggios (the 'scream'),
then plunges into the abyss as the bass descends to the lowest C and
fades to silence. Three channels: CH1 melody, CH2 bass, CH4 noise toll
(mid toll on chord changes, crash at the climax, deep toll in the abyss),
at a somber 14 frames/note.
- sound.c: finale_ch1_seq[192], finale_ch2_seq[192], play_finale_step(),
finale_music_timer/step, sequencer branch for game_over==3.
- sound.h: play_finale_step prototype.
Verified via PyBoy: all three APU channels active throughout the finale.
enne2
4d7bb13bc3