Auto-resume of restart-interrupted sessions bypassed auth checks.
The session owner was never validated against TELEGRAM_ALLOWED_USERS
(or equivalent) before the synthetic resume event was dispatched. An
attacker with an active session before the allowlist was configured
could receive a full agent response on gateway restart (issue #23778).
Clean rebase of #23800 onto current main (egilewski flagged a merge
conflict in gateway/run.py on the old branch).
Fix: check _is_user_authorized() for the session owner before
scheduling auto-resume. Unauthorized sessions are skipped with a
warning log instead of silently resuming.
Fixes#23778 (partial - auto-resume auth bypass)
ygd58
0de67ad604