Mig 099 (drop_with_po_flag) crash-looped paliad.de prod immediately
after deploy: the mig 079 trigger on paliad.deadline_rules raises
EXCEPTION 'audit reason required' on UPDATE when paliad.audit_reason
is unset. Original file (fermi, t-paliad-207) only had the UPDATE,
no set_config wrapper.
Patch: prepend the standard 'SELECT set_config(paliad.audit_reason,
...)' at the top so the trigger sees the reason. Same shape as every
other migration that mutates deadline_rules.
Manual recovery already applied via head MCP — UPDATE'd the 2 rows
with audit_reason set, marked tracker version=99 dirty=false,
force-restarted the container which booted clean. This commit aligns
the in-repo file with the recovered prod state. Idempotent: the
WHERE clause matches only rows that still carry with_po, so re-apply
is a no-op.
