2026-09-20 cumulative regression after Day 24

PASS make check-pipe
PASS make check-shell
PASS make check-fd
PASS make check-fat
PASS make check-block
PASS make check-process
PASS make check-syscall
PASS make check-elf
PASS make check-memory
PASS make check-runtime-limit
PASS make check-keyboard

All targets used QEMU 8.2.2/TCG with pc-i440fx-7.2, qemu32, 1 CPU,
64 MiB RAM, SeaBIOS 1.16.3, and GDB 15.1 where the target requires it.