Wrapper layer kernel (stage / reboot / boot / good / revert / cancel / status;
R20-R23), the two GRUB generators in the bundle (option C on the one-shot
entry), the agent's night step and after-boot judge (host health rule + hub
reached, 20 min measured), the signed os_kernel_step (stage only).
Red-proofs: felhom.eu audits/kernel-lane-2026-10-07/A/redproof.txt.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
The wrapper gains layer "pve" (slow lane): the host's Proxmox userspace
packages only — origin "Proxmox Debian Repository", never a kernel / boot /
firmware / microcode name (R14), no removal, no undo, a new package only from
an allow-list; authority = a signed os_pve_step or the root-owned ring-0 mark.
The night leg runs it in ring 0 after a healthy host step; ring 1 only by a
signed job (PVEStepExecutor). While it runs, the agent's own /etc/pve writes
(every non-GET API call, pct config verbs, pvesm, pveum, felhom-pbs-apply)
wait on internal/pvegate. Health = the host rule + unchanged container ids +
pveversion reads the installed pve-manager.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
felhom-os-apply: a docker-layer apply runs oom_check() after health_after and reports
"oom_check": {result pass|fail|error, oom_killed, oom_event, exit_code, image, detail}.
One throwaway container (the controller's image, --pull never, --network none, 64m cap,
label felhom.oomcheck=1) runs dd bs=200M; pass only with OOMKilled=true AND the oom event
(read after a 2 s settle, --until = guest epoch + 1: measured on demo-hp, an --until taken
right after the run missed the event). docker rm -f always runs in a finally; every call
is bounded (<= 90 s). It never changes the step's outcome or health. New wrapper-only mode
"oom-check" (docker layer) runs the check alone; check_guest etc. still apply.
Agent: WrapperReport/Report gain OOMCheck (json:"oom_check"), copied unchanged in runLayer
and in the kept-copy path.
Tests: 9 wrapper tests + 2 Go tests, each red-proofed (audits/readback-2026-10-07/F/red-*.txt).
Also: test_felhom_os_apply.py's `if __name__` sat mid-file, so 11 tests (UnsentReport,
SaveReportOnDisk, AgentDiesMidPass, CrashLeftTheJournal) never ran as a script or from
TestWrapperSuite; moved to the end (they pass).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
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