fix: normalize repeat<=0 to None to prevent cron jobs deleting after first run (#2612)

fix: normalize repeat<=0 to None — cron jobs deleted after first run when LLM passes -1

cron/jobs.py

@@ -383,6 +383,10 @@ def create_job(
     """
     parsed_schedule = parse_schedule(schedule)
 
+    # Normalize repeat: treat 0 or negative values as None (infinite)
+    if repeat is not None and repeat <= 0:
+        repeat = None
+
     # Auto-set repeat=1 for one-shot schedules if not specified
     if parsed_schedule["kind"] == "once" and repeat is None:
         repeat = 1
@@ -571,7 +575,7 @@ def mark_job_run(job_id: str, success: bool, error: Optional[str] = None):
                 # Check if we've hit the repeat limit
                 times = job["repeat"].get("times")
                 completed = job["repeat"]["completed"]
-                if times is not None and completed >= times:
+                if times is not None and times > 0 and completed >= times:
                     # Remove the job (limit reached)
                     jobs.pop(i)
                     save_jobs(jobs)