When a maintenance window ends on a resource, the sentinel runs
deterministic checks (active alerts, Patrol findings, failed actions
since window start, basic post-window metric recovery) and writes a
durable LoopReport. Operators can list reports per resource, mark them
reviewed, or rerun verification immediately. UI surfaces the section in
the resource detail drawer; scoped Patrol runs and Assistant deep-link
are deferred until those entry points stabilise.