Rename open-workplan digest helpers, expose open_workplans alongside legacy open_workstreams in daily triage digests, and update custodian runtime prompt prose while preserving wire-compat API paths and query params.
Add phase5_stabilization_check State Hub resolver with progress evidence sinks, schedule projections for daily and closeout checks, custodian:// and activity-core:// runtime path resolution, and Railiance mounts under /var/custodian.
