feat(mma): Implement interception logic in GUI and Conductor

tests/test_spawn_interception.py

@@ -11,7 +11,11 @@ class MockDialog:
         self.approved = approved
         self.final_payload = final_payload
     def wait(self):
-        return self.approved, self.final_payload
+        # Match the new return format: a dictionary
+        res = {'approved': self.approved, 'abort': False}
+        if self.final_payload:
+            res.update(self.final_payload)
+        return res
 
 @pytest.fixture
 def mock_ai_client():