Adds p2r01_ws_test.go covering the two paths the original commit's
in-process tests couldn't reach without a live conn:
- maybeAutoInit dispatches command.run(init) on first hello when creds
are bound, skips on second hello once a job row exists, and skips
entirely when the host has no creds.
- dispatchScheduledJob iterates a schedule's source groups and emits
one backup per group with the right Tag/Includes; persists job rows
with actor_kind=schedule + scheduled_id; no-ops on a disabled
schedule.
Drops RetentionPolicy from the per-group Run-now and schedule.fire
backup payloads — the agent's RunBackup ignores it (forget is the
only consumer). Adds Hub.Conn() so tests can grab the live *Conn
post-hello.
