speakers: rename owner subcommands, document library-maintenance commands
Commands renamed in the write-verb polarity inversion (commit 1c59dad6):
owner detect → detect
owner confirm → confirm-owner (backfill default)
owner reject → reject-owner (14-day cooldown)
Skill still taught the old names; updated examples, headings, and the
conversational curation guidance to match.
Add sections for nine previously-undocumented commands: bootstrap,
resolve-names, attribute-segment, backfill, discover, link-import,
seed-from-imports, owner-ready. Add a Gotchas block led by the
preview-by-default writer polarity — the most common silent-failure
in this CLI.
Plus Invoke via Bash line and expanded TRIGGER with literal command names.
Part of skills audit req_loq3e2lk pass 1+2.