docs(pm-dispatch): the project layer — one project form, 「pm-dispatch <席位…>」 as the summon, seats read from the seat posts' 🟢 line, takeover that never waits for a walled account, mailbox PRs, a generated roster board

docs(pm-dispatch): the project layer — one project form, 「pm-dispatch <席位…>」 as the summon, seats read from the seat posts' 🟢 line, takeover that never waits for a walled account, mailbox PRs, a generated roster board #21141