docs: record topic-spine cutover gates

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a0230c-b06c-7641-808a-e191b6d1da49

workplans/HUB-WP-0006-repository-classification-navigation.md

@@ -156,6 +156,16 @@ projection, retain explicit aliases where required, run owned consumer smokes,
 switch A5 through `RM_SLICE_TOPICSPINE`, and record rollback plus residual
 expiry. Wait on T02-T05 and the State Hub cutover window.
 
+Readiness checkpoint 2026-08-22: T02-T05 are complete, but T06 remains `wait`.
+`RMGR-WP-0008-T06` delivered validation and the authority contract, not a
+transport that emits the frozen paged envelope with registrar
+`repository_id` values. A Repo Manager-owned `port.repo` publisher/adapter is
+therefore still required before comparison can start. Hub-core commits
+`a701dc8` through `93a9151` also require migration/image deployment, and
+`STATE-WP-0079-T04` remains `progress`. Do not move `RM_SLICE_TOPICSPINE` from
+off until those three gates close; rollback remains the flag set to off plus
+the prior State Hub read route.
+
 ## Acceptance
 
 - [x] Repo Manager v1.0 authority and projection contract accepted