refactor(agent-runner): use sandbox file model

tests/unit_tests/agent/test_context_builder_state.py

@@ -41,7 +41,6 @@ def make_descriptor(
         else {
             'history': ['page', 'search'],
             'events': ['get', 'page'],
-            'artifacts': ['metadata', 'read'],
             'storage': ['plugin'],
         },
     )
@@ -310,29 +309,6 @@ class TestContextAccessOtherAPIs:
         assert context_access['available_apis']['event_get'] is True
         assert context_access['available_apis']['event_page'] is True
 
-    @pytest.mark.asyncio
-    async def test_artifact_apis_enabled_by_default(self, mock_app):
-        """Artifact APIs are available based on current run scope."""
-        mock_event = MagicMock()
-        mock_event.conversation_id = 'conv_001'
-        mock_event.thread_id = None
-        mock_descriptor = make_descriptor()
-
-        binding = AgentBinding(
-            binding_id='binding_001',
-            runner_id='plugin:test/runner/default',
-            scope=BindingScope(scope_type='agent', scope_id='conv_001'),
-            state_policy=StatePolicy(enable_state=False, state_scopes=[]),
-        )
-
-        builder = AgentRunContextBuilder(mock_app)
-
-        # Real call
-        context_access = await builder._build_context_access(mock_event, mock_descriptor, binding)
-
-        assert context_access['available_apis']['artifact_metadata'] is True
-        assert context_access['available_apis']['artifact_read'] is True
-
     @pytest.mark.asyncio
     async def test_conversation_required_apis_disabled_without_conversation(self, mock_app):
         """Conversation-scoped APIs are disabled when the run has no conversation."""
@@ -357,8 +333,6 @@ class TestContextAccessOtherAPIs:
         assert context_access['available_apis']['history_search'] is False
         assert context_access['available_apis']['event_get'] is True
         assert context_access['available_apis']['event_page'] is False
-        assert context_access['available_apis']['artifact_metadata'] is True
-        assert context_access['available_apis']['artifact_read'] is True
         assert context_access['available_apis']['state'] is False
 
     @pytest.mark.asyncio
@@ -384,6 +358,4 @@ class TestContextAccessOtherAPIs:
         assert context_access['available_apis']['history_search'] is False
         assert context_access['available_apis']['event_get'] is False
         assert context_access['available_apis']['event_page'] is False
-        assert context_access['available_apis']['artifact_metadata'] is False
-        assert context_access['available_apis']['artifact_read'] is False
         assert context_access['available_apis']['storage'] is False