GitHub runners export XDG_CONFIG_HOME=/home/runner/.config and it leaks
through sudo -u, so the pmgtest pmg resolved the runner user's config
dir and fail-closed on its runner-owned log file (run 29289868727 shows
the triaged error catching exactly this). Set it inside the login shell
so it wins regardless of how the leak is delivered.
The remedy now returns a full-help and doctor-table pair from a single
triage, and drops the do-not-chown tail from the leak message.
The chown hint is only correct when another account created files
inside the current user's own home. When a leaked HOME or
XDG_CONFIG_HOME points at another user's home (e.g. sudo -u on GitHub
runners), following it would chown that user's directory and brick
their pmg instead. Classify the failure against the passwd home,
which the leaked environment cannot influence, and prescribe:
- dir inside own home: restore ownership with chown
- dir outside own home: fix the leaked environment, never chown
- explicit PMG_CONFIG_DIR: make it writable
Used by both the fatal event-log error and the doctor check, and the
docs troubleshooting now carries the same two-case triage.
Sahilb315