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.

workplans/CUST-WP-0025-fos-hub-bootstrap.md

@@ -8,7 +8,7 @@ status: active
 owner: custodian
 topic_slug: custodian
 created: "2026-03-20"
-updated: "2026-06-07"
+updated: "2026-06-22"
 state_hub_workstream_id: "293a74fe-a85a-4ad6-8933-23d52a72fe8b"
 ---
 
@@ -246,7 +246,7 @@ tests cover the event contract, router views, and MCP tool registration.
 
 ```task
 id: CUST-WP-0025-T08
-status: in_progress
+status: done
 priority: high
 state_hub_task_id: "daf1d8ac-b55a-4692-b359-2671ddf6fc8a"
 ```
@@ -257,11 +257,11 @@ Refactor the standalone `/home/worsch/state-hub` codebase:
 - Ensure all existing tests pass with the new import structure
 - Update pyproject.toml to depend on hub-core
 
-Extracted child workplan (2026-06-07): T08 became complex enough to deserve its
-own progress surface. Ongoing implementation and slice history now live in
-`CUST-WP-0048 - Hub-Core State Hub Import Refactor`. This umbrella task remains
-`in_progress` until the child workplan finishes and hands control back to the
-Phase 2 dev-hub rename sequence.
+Completed 2026-06-22: child workplan `CUST-WP-0048` finished. Generic schemas,
+routers, capability write callbacks, and MCP composition now import from
+hub-core. State Hub regression: 426 tests. Deferred couplings documented in
+`docs/hub-core-extraction-boundary.md` (ProgressEvent FK mapping, optional
+workplan column → JSON migration). Phase 2 proceeds to dev-hub rename (T09+).
 
 ### T09 — Rename MCP server state-hub to dev-hub