feat: add durable success-first modelhub agent

tests/test_agent_entrypoint.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import importlib.util
 import os
 import unittest
+import tempfile
 from pathlib import Path
 from unittest.mock import patch
 
@@ -28,6 +29,16 @@ class HostedAgentEntrypointTests(unittest.TestCase):
             command = ENTRYPOINT._worker_command()
 
         self.assertEqual(["--max-submits-per-run", "0"], command[-2:])
+        self.assertIn("--state-sync", command)
+
+    def test_readiness_file_is_separate_from_liveness(self) -> None:
+        with tempfile.TemporaryDirectory() as temporary_dir:
+            path = Path(temporary_dir) / "readiness.json"
+            path.write_text('{"ready": false, "reason": "state_sync_unhealthy"}', encoding="utf-8")
+            with patch.object(ENTRYPOINT, "READINESS_PATH", path):
+                readiness = ENTRYPOINT._readiness()
+        self.assertFalse(readiness["ready"])
+        self.assertEqual("state_sync_unhealthy", readiness["reason"])
 
 
 if __name__ == "__main__":