Schema Unification (gbrain-base → gbrain-base-v2)
v0.41.22 ships gbrain-base-v2 — a 15-type DRY/MECE taxonomy (14 canonical + note catch-all) — as the install default for new brains. Existing brains on gbrain-base can opt in via the pack_upgrade_available onboard finding + the unify-types PROTECTED Minion handler.
This skill is the playbook for that migration.
brain_first: exempt
This skill is ABOUT the brain's shape — it can't depend on the brain it's reshaping. No gbrain search lookup first; jump straight to onboard.
When this skill fires
- Agent runs
gbrain onboard --checkand seespack_upgrade_availableortype_proliferationwarnings - User asks "what is the canonical taxonomy / how do I clean up my page types / migrate to v2"
- A
dangling_aliasesfinding surfaces (post-unify GC) - An agent ingesting from a custom pack wants to consult the v2 taxonomy as a reference
Mental model (one paragraph)
A production gbrain brain accreted 94 distinct pages.type values over years of ingestion: tweet / tweet-thread / tweet-bundle / tweet-single / media/x-tweet/bundle / tweet-stub all coexisting; 5.5K concept-redirect pages; atom-partner-link p…
