docs: start state-hub hub-core imports

docs/hub-core-extraction-boundary.md

@@ -82,6 +82,9 @@ Current implementation status:
 - 2026-06-07: T06/T07 completed in hub-core with orientation and DoI MCP tools,
   canonical FOS §10 risk/alert event types, `/progress/risks` and
   `/progress/alerts` REST views, and matching MCP read tools.
+- 2026-06-07: T08 started in State Hub. `hub-core` is now an editable
+  dependency, and State Hub re-exports message and DoI response schemas from
+  `hub_core.schemas` with full pytest coverage passing.
 
 ## Extract Now
 
@@ -189,7 +192,7 @@ to import it:
 
 ## Next Step
 
-Start T08 by introducing `/home/worsch/hub-core` as an editable dependency of
-`/home/worsch/state-hub`, then replace the lowest-risk generic imports first.
-Do not rename State Hub to dev-hub until T05-T08 prove the shared package
-boundary.
+Continue T08 by replacing the next lowest-risk generic schema/router imports.
+Do not import hub-core SQLAlchemy models into State Hub until the shared
+metadata/migration strategy is explicit. Do not rename State Hub to dev-hub
+until T05-T08 prove the shared package boundary.

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

@@ -246,7 +246,7 @@ tests cover the event contract, router views, and MCP tool registration.
 
 ```task
 id: CUST-WP-0025-T08
-status: todo
+status: in_progress
 priority: high
 state_hub_task_id: "daf1d8ac-b55a-4692-b359-2671ddf6fc8a"
 ```
@@ -257,6 +257,13 @@ 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
 
+Implementation start (2026-06-07): added `/home/worsch/hub-core` as an editable
+`hub-core` dependency of `/home/worsch/state-hub`, synced `uv.lock`, and
+converted State Hub's message and DoI response schema modules into
+compatibility re-exports from `hub_core.schemas`. Added
+`tests/test_hub_core_imports.py` to pin the import seam. Verification:
+`python -m pytest` in State Hub passed with 349 tests.
+
 ### T09 — Rename MCP server state-hub to dev-hub
 
 ```task