d43_emit.py reserved the PointUsage region (add_region) during layout but
the emit pass never wrote it -> all zeros -> chr.c's blood-decal walk
'index = PointUsage[index]' cycled 0->0 forever (capped by the #ifdef
PORT guard at chr.c:3328, so decals were missing/wrong, not a hang).
Now byteswaps each s16 index (numVertices entries, negative-terminated,
no remap). Full regen chain re-run, round-trip validation passes. The
chr.c guard stays as a safety net (SMALL-FIXES B3). Also: retract RC4
(palette off-by-one) in TEXTURE-GLITCH-ANALYSIS -- the current RGBA5551
decode is correct; the doc's 'spec' was ARGB1555.
James Dansereau
742f2f820e