bitmap_group.h: signed depth/mipmap_count and union point2d registration_point (HCEA types, January movsx reads and whole-point copies), respelled in its four consumers. bitmaps_mipmap.h declares bitmap_get_max_mipmap_count (fixes an implicit declaration); bitmap_group_internal.h declares bitmap_group_add_bitmap (bitmap_group.h placement regressed decals by declaration count). bitmap_compress_to_mipmap takes the transparent-colour reference pointer January passes. Header renames and their consumers are one measured packet. Unparks _extract_add_bitmap, _extract_build_debug_plate, _extract_mipmaps_to_bitmap, _extract_pixels_from_mipmap, _extract_pixels_to_mipmap (+4,544 padded); re-baselines parked _bitmap_group_add_bitmap (same 992/59). Adversarially verified; 45 bitmap_group.h consumers rebuilt, 0 regressions.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
