Main-side drift (maxConcurrency 3; full docs truth-audit + system realign)
merged onto develop; develop side unchanged since 879d200, so the tree is
main's. No conflicts (merge-tree rc=0).
Supersedes c4cf53f/5d7314e (broken: first took develop's tree wholesale,
second merged against a base that already contained main). Three genuine
conflicts resolved in main's favor: develop's models.yml refactors
predate the October callsign-rename cutover; the dank-user memory buckets
are superseded by main's learn output.
Frank