feat: complete dual-seat whole-vehicle orchestration

tests/unit/test_openai_responses.py

@@ -9,6 +9,7 @@ from unittest.mock import patch
 from cognitive_agent.infrastructure.llm.openai_responses import (
     SYSTEM_PROMPT,
     OpenAIIntentInterpreter,
+    build_intent_schema,
 )
 
 
@@ -20,6 +21,7 @@ INTENT = {
             "capability": "seat.set_ventilation",
             "target_scope": "passenger",
             "operation": "activate",
+            "duration_ms": None,
             "parameters": [
                 {"name": "state", "value": "on"},
                 {"name": "level", "value": 1},
@@ -76,6 +78,16 @@ class OpenAIResponsesTests(unittest.TestCase):
         self.assertIn("longitudinal 20%", normalized)
         self.assertIn("do not invent catalog_only capabilities", normalized)
 
+    def test_explicit_seat_motion_duration_is_part_of_the_model_contract(self) -> None:
+        normalized = " ".join(SYSTEM_PROMPT.split())
+        self.assertIn("preserve that duration exactly in request.duration_ms", normalized)
+        request_schema = build_intent_schema({})["properties"]["requests"]["items"]
+        self.assertIn("duration_ms", request_schema["required"])
+        self.assertEqual(
+            request_schema["properties"]["duration_ms"]["type"],
+            ["integer", "null"],
+        )
+
     def test_non_streaming_structured_output(self) -> None:
         response_body = json.dumps({"output_text": json.dumps(INTENT)})
         environment = {