Add category: game_data to sdlpal, nxengine, opentyrian, easyrpg, mkxp_z profiles. verify.py separates game_data from bios in core gap metrics for cleaner coverage numbers. New BIOS files: Cemu fonts (4), QEMU bios-256k + vgabios-stdvga, GAM4980 ROMs (2), SC-3000 Export variant.
New files: OpenTyrian data (11), Cave Story (2), SeaBIOS, VGA BIOS, OpenSBI, Cromwell, xbox_hdd, Sega CD Model 2 (3), NGP Color BIOS, Pentagon 128p-1.rom, X1 font, BK TERAK. cross_reference.py: basename + case-insensitive lookup.