fix(agent): polish interrupt-resume flow for merge readiness

backend/tests/integration/v1/agent/test_chat_routes.py

@@ -13,6 +13,9 @@ from v1.users.dependencies import get_current_user
 
 
 class FakeAgentService:
+    async def prepare_resume(self, run_id: str, input_data: RunAgentInput):
+        return None
+
     async def stream_run(self, input_data: RunAgentInput):
         yield 'data: {"type": "RUN_STARTED", "runId": "r1"}\n\n'
         yield 'data: {"type": "TEXT_MESSAGE_START", "messageId": "m1"}\n\n'

backend/tests/integration/v1/agent/test_interrupt_resume_flow.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import json
 from uuid import UUID
 
 import pytest
@@ -13,6 +14,9 @@ from v1.users.dependencies import get_current_user
 
 
 class FakeAgentServiceWithInterrupt:
+    async def prepare_resume(self, run_id: str, input_data: RunAgentInput):
+        return None
+
     async def stream_run(self, input_data: RunAgentInput):
         yield 'data: {"type": "RUN_STARTED", "runId": "' + input_data.runId + '"}\n\n'
         yield 'data: {"type": "TEXT_MESSAGE_START", "messageId": "m1"}\n\n'
@@ -30,7 +34,7 @@ class FakeAgentServiceWithInterrupt:
             yield 'data: {"type": "RUN_STARTED", "runId": "' + run_id + '"}\n\n'
             yield (
                 'data: {"type": "TOOL_RESULT", "toolName": "ui.navigate_to", "result": '
-                + str(payload.get("result", {}))
+                + json.dumps(payload.get("result", {}))
                 + "}\n\n"
             )
             yield 'data: {"type": "TEXT_MESSAGE_START", "messageId": "m2"}\n\n'
@@ -100,10 +104,7 @@ class TestInterruptResumeFlow:
             0
         ]
         assert '"toolName": "ui.navigate_to"' in tool_result_event
-        assert (
-            "'success': True" in tool_result_event
-            or '"success": true' in tool_result_event.lower()
-        )
+        assert '"success": true' in tool_result_event.lower()
 
     def test_backend_tool_approval_rejected(self, client: TestClient):
         payload = {