The kit is the instruction book for putting a different game on this platform,
written for an audience outside this org. Teams expands the contract that book
teaches against, so the book is the last thing the bet owes before `edge` becomes
`main` (org lead, 2026-08-18).
One sentence in it is already wrong rather than merely incomplete.
`book/02-website-module.md` tells a reader that core declares a slot and a module
may only fill one. Phase 3 inverted exactly that, and by phase 6 module-uo declares
three — a new game's module cannot implement Teams at all without the inverted
direction.
Two shapes are genuinely new and worth teaching: the inverted slot, and
`registerTeamProvider` as the first registration where core calls the module and
waits — with the asymmetry that every call fails stale except `projectRoster`,
which fails closed, because for a visibility question "keep what you have" means
serving the roster unprojected.
The phase explicitly does NOT enumerate the contract. The kit already teaches four
members and has never mentioned notification streams, announce legs or post hooks,
all of which predate Teams. MODULE_API.md is normative; the kit teaches one path
and links out.
Its ordering is awkward and is stated rather than smoothed over: it is written
before the cutover and can only merge after it, because CI clones the pinned sha
and checks the template against that core's MODULE_API_VERSION — and 1.6.0 does
not reach `main` until the cutover lands.
Co-Authored-By: Claude <noreply@anthropic.com>
wtclaude
12bd24a973