Two instances of the branch's recurring bug class remained in the agent
path: a client-supplied ID accepted as data, then consumed by an
unscoped query.
- ListMonitorsForRunner filtered on `runner` alone, and `runner` is set
by the client on monitor create/update. Org A could point a monitor at
org B's server_id and org B's agent would fetch and execute the check.
Now org-filtered, and `runner` is validated against the caller's org on
create and update.
- IngestResult resolved the monitor via the unfiltered getMonitorByID
using a monitor_id from the agent's request body, letting org A's agent
write state and incidents into org B's monitor and fire its channels.
Now rejects on org mismatch and on a monitor not assigned to the
reporting agent.
The in-process scheduler passes an empty orgID as a documented sentinel
for the cross-org server-run sweep.
Install script still emits a single shared GRPC_HOST; the agent path
resolves org from the server record, never from a hostname.