oberon-risc-emu-git

• Path: arch/maintained/oberon-risc-emu-git
• arch=("x86_64"), pkgrel=3. Verified it still builds cleanly (2026-08-17), no changes needed — a small RISC emulator, no obvious 32-bit fit checked/attempted since not requested.
• 2026-08-17 (later same day): extended to ("x86_64" "i686" "pentium4"), pkgrel 3 -> 4 (maintained/, plain integer). Only depends on sdl2 — built cleanly for all three arches, no issues.