`provision debug` is the lab's recovery tool of last resort and had no
integration coverage on any architecture. Adding it -- x86_64 on KVM so
it runs in ~15 minutes, plus the aarch64 equivalent -- showed the rescue
environment coming up correctly but nothing ever listening on port 22.
Reproduced on both architectures, so it is neither ARM-specific nor an
emulation artefact, and it is orthogonal to the multi-arch work: x86_64
is unchanged by that. Documented in ARCHITECTURE.md with the leads worth
checking, rather than left as a silent gap.
Also restructures the ARM rescue suite to seed the machine into state
instead of discovering it first. That mirrors the DGX Spark situation --
SSH-onboarded, never PXE-discovered, architecture known only from its
record -- and holds the test to one emulated boot, since each spends
~15 of its ~18 minutes fetching Anaconda's stage2 under TCG.
KEEP_VM=1 leaves the VM up on failure; half-hour emulated runs are too
expensive to pay twice just to see what happened.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015nRFZXpKwUVE4SRSHw6GjF
