Runner architecture: detect and learn issue #53 closed: completed andymccall opened this 21 days ago · 0 comments

Andy chose "detect and learn" (2026-10-13). An image with no recorded architecture matched any runner, so a riscv64 runner (narvi) could be handed an x86_64 image, run it and fail.

• jet::rootfs: read an ext4 image's /bin/sh (else busybox, env, bash) through symlinks to its ELF header, without mounting.
• The runner reads an unrecorded image's architecture, records it in its manifest, reports it with its claims, and declines a mismatch (spec §11.2, §11.5).
• The hub (oxygenhub#173) reads images it keeps on push and backfills; still unknown is offered only to the architecture its jobs passed on.