docs: start state-hub hub-core imports

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