feat(ACTIVITY-WP-0029): inventory callers, retarget sweep, bound execution

Map every State Hub/core-hub caller to a post-retirement owner. Keep the
15-minute sweep schedule here and point the engine at repo-manager
(State Hub dual-run by default, REPO_MANAGER_URL when present). Publish
GET /execution/semantics and 410 workplan launch routes so State Hub
/execution/* is not re-homed as a task database. T03 still waits on
HUB-WP-0004.

k8s/railiance/20-runtime.yaml

@@ -243,6 +243,8 @@ data:
 
     Kubernetes projection of the Custodian-owned definition in
     `/home/worsch/the-custodian/activity-definitions/state-hub-consistency-sweep.md`.
+    ACTIVITY-WP-0029: activity-core schedules; repo-manager owns the engine;
+    State Hub remains the default dual-run adapter until REPO_MANAGER_URL is set.
   daily-todo-md-stale-review.md: |
     ---
     id: "b8e4f1a2-3c6d-4e9f-a1b2-7d8e9f0a1b2c"