Close CUST-WP-0048 hub-core import refactor (T05-T08)

Mark capability write and MCP composition tasks done, record 426-test
regression, finish child workplan, and complete CUST-WP-0025-T08.

docs/hub-core-extraction-boundary.md

@@ -136,6 +136,10 @@ Current implementation status:
   hub-core messaging, capability read lifecycle, TPSC list/DoI, and FOS §10
   tools while keeping enriched orientation, repo registration, capability
   request creation, TPSC ingest, and service registration tools local.
+- 2026-06-22: **CUST-WP-0048 closed.** Full regression: hub-core 27/27, State
+  Hub 426/426. Health probe uses injected `get_session` (fixes asyncpg pool
+  flake). Remaining deferred seams: ProgressEvent FK → `subject_refs` mapping;
+  optional CapabilityRequest workplan columns → JSON context.
 
 ## Extract Now
 
@@ -243,6 +247,9 @@ to import it:
 
 ## Next Step
 
-Close **CUST-WP-0048** T05–T07: run full State Hub regression, mark the child
-workplan finished, and return to **CUST-WP-0025** dev-hub rename (T09+). Do not
-rename State Hub to dev-hub until CUST-WP-0048 closes.
+**CUST-WP-0048** is finished; **CUST-WP-0025-T08** is done. Proceed to Phase 2
+dev-hub rename (**CUST-WP-0025-T09+**): MCP server name, config migration, and
+integration-point renames. Optional follow-up extractions (not blocking rename):
+
+- map State Hub `ProgressEvent` foreign keys into `subject_refs`
+- map CapabilityRequest workplan/task columns into JSON context fields