Problem: 'hermes cron run JOBID' only queues for next scheduler tick.
Stale error state (like tool_choice TypeError residue) persists forever
because there's no way to execute a job immediately and get fresh results.
Solution: Three-layer synchronous execution path:
- cron/jobs.py: run_job_now() calls scheduler.run_job() then mark_job_run()
- gateway: POST /api/jobs/{id}/run-now endpoint (runs in thread executor)
- CLI: hermes cron run JOBID --now executes and prints result immediately
- tools/cronjob_tools.py: 'run_now' action routes to new function
Also fixes#346, #349 (same stale error pattern).
f6e72c135c