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

tests/cron/test_jobs.py

@@ -313,6 +313,24 @@ class TestMarkJobRun:
         # Job should be removed after hitting repeat limit
         assert get_job(job["id"]) is None
 
+    def test_repeat_negative_one_is_infinite(self, tmp_cron_dir):
+        # LLMs often pass repeat=-1 to mean "infinite/forever".
+        # The job must NOT be deleted after runs when repeat <= 0.
+        job = create_job(prompt="Forever", schedule="every 1h", repeat=-1)
+        # -1 should be normalised to None (infinite) at create time
+        assert job["repeat"]["times"] is None
+        # Running it multiple times should never delete it
+        for _ in range(3):
+            mark_job_run(job["id"], success=True)
+            assert get_job(job["id"]) is not None, "job was deleted after run despite infinite repeat"
+
+    def test_repeat_zero_is_infinite(self, tmp_cron_dir):
+        # repeat=0 should also be treated as None (infinite), not "run zero times".
+        job = create_job(prompt="ZeroRepeat", schedule="every 1h", repeat=0)
+        assert job["repeat"]["times"] is None
+        mark_job_run(job["id"], success=True)
+        assert get_job(job["id"]) is not None
+
     def test_error_status(self, tmp_cron_dir):
         job = create_job(prompt="Fail", schedule="every 1h")
         mark_job_run(job["id"], success=False, error="timeout")