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.
Review ACTIVITY-WP-0029 against info-tech-canon, policy-nexus, and
State Hub retirement: activity-core keeps schedule and ops_run;
repo-manager owns consistency; hub-core owns progress ports.
Mark WP-0026 finished. Refresh INTENT, SCOPE, and repo-boundary.
