night 2026-10-04: the guest undo runbook (proven 48 s), R-866, A3 in progress

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
2026-10-04 22:37:25 +02:00
parent a1a32bbd74
commit 76ff0654ea
4 changed files with 73 additions and 1 deletions
@@ -78,4 +78,4 @@ installs the new version again. Write the hold into the register row that tracks
 - A kernel: the fast lane never installs one (R14). The kernel lane is `11` §5.6 (not built).
 - A Proxmox-origin package (pve-*, qemu-server, …): never installed by the fast lane (R12/origin rule). Proxmox's
  own repository keeps old versions; that undo is not written yet.
- The customer guest: its undo is last night's whole-guest backup (decision 81).
+- The customer guest: its undo is last night's whole-guest backup (decision 81) — `os-updates-guest-undo.md` (proven 2026-10-04 night, 48 s down).