3386

Added

• Cheevos LibRetro Audit — added docs/cheevos-libretro-status.md documenting that HAVE_CHEEVOS is enabled for all build variants (Lite, Standard, XL) and all 60+ libretro cores reach cheevos.c via RetroArch's unified runloop
• Cheevos Build Audit Script — added CoresRetro/RetroArch/scripts/audit-cheevos-flags.sh to verify HAVE_CHEEVOS is defined in all expected build configuration files; exits non-zero if any location is missing