Diagnosis
| Note | Type | Scope | Confidence |
|---|---|---|---|
| A hard hang writes nothing to disk — capture on the host, before you trigger | trap | generic | proven |
| A journal grep counts the grep that is asking | trap | generic | proven |
| dmesg can be empty about boot while the journal still has everything | trap | generic | proven |
| FROZEN (kernel alive, userspace gone) is a distinct state and the watchdog will not save you | trap | generic | proven |