refactor(agent): remove enabled state

tests/integration/persistence/test_migrations.py

@@ -108,7 +108,7 @@ class TestSQLiteMigrationUpgrade:
         await run_alembic_upgrade(sqlite_engine, 'head')
 
         assert await get_alembic_current(sqlite_engine) == _get_script_head()
-        assert _get_script_head() == '0022_merge_agent_reasoning_heads'
+        assert _get_script_head() == '0023_drop_agent_enabled'
 
     @pytest.mark.asyncio
     async def test_upgrade_from_development_workspace_head_to_merged_head(self, sqlite_engine):
@@ -120,7 +120,7 @@ class TestSQLiteMigrationUpgrade:
         await run_alembic_upgrade(sqlite_engine, 'head')
 
         assert await get_alembic_current(sqlite_engine) == _get_script_head()
-        assert _get_script_head() == '0022_merge_agent_reasoning_heads'
+        assert _get_script_head() == '0023_drop_agent_enabled'
 
     @pytest.mark.asyncio
     async def test_upgrade_from_reasoning_config_head_to_merged_head(self, sqlite_engine):
@@ -131,7 +131,23 @@ class TestSQLiteMigrationUpgrade:
         await run_alembic_stamp(sqlite_engine, '0018_llm_reasoning_config')
         await run_alembic_upgrade(sqlite_engine, 'head')
 
-        assert await get_alembic_current(sqlite_engine) == '0022_merge_agent_reasoning_heads'
+        assert await get_alembic_current(sqlite_engine) == '0023_drop_agent_enabled'
+
+    @pytest.mark.asyncio
+    async def test_upgrade_removes_agent_enabled_column(self, sqlite_engine):
+        async with sqlite_engine.begin() as conn:
+            await conn.run_sync(Base.metadata.create_all)
+            await conn.exec_driver_sql('ALTER TABLE agents ADD COLUMN enabled BOOLEAN NOT NULL DEFAULT 1')
+
+        await run_alembic_stamp(sqlite_engine, '0022_merge_agent_reasoning_heads')
+        await run_alembic_upgrade(sqlite_engine, 'head')
+
+        async with sqlite_engine.connect() as conn:
+            columns = await conn.run_sync(
+                lambda sync_conn: {column['name'] for column in sqlalchemy.inspect(sync_conn).get_columns('agents')}
+            )
+
+        assert 'enabled' not in columns
 
     @pytest.mark.asyncio
     async def test_upgrade_from_baseline_to_head(self, sqlite_engine):

tests/unit_tests/agent/test_context_validation.py

@@ -74,7 +74,6 @@ class TestContextValidation:
             runner_id='plugin:test/plugin/runner',
             runner_config={'timeout': 300},
             agent_id='pipeline_1',
-            enabled=True,
         )
 
     def _make_resources(self) -> BuilderResources:

tests/unit_tests/agent/test_orchestrator_integration.py

@@ -1069,7 +1069,6 @@ class TestQueryEntrySessionQueryId:
             resource_policy=ResourcePolicy(),
             state_policy=StatePolicy(enable_state=False, state_scopes=[]),
             delivery_policy=DeliveryPolicy(enable_streaming=True, enable_reply=True),
-            enabled=True,
         )
 
         messages = [

tests/unit_tests/api/service/test_agent_service.py

@@ -46,7 +46,6 @@ def _agent_row(
             'runner': {'id': 'plugin:test/runner/default', 'expire-time': 0},
             'runner_config': {'plugin:test/runner/default': {'temperature': 0.2}},
         },
-        enabled=True,
         supported_event_patterns=supported_event_patterns or ['*'],
         created_at=dt.datetime(2026, 1, 1, 9, 0, 0),
         updated_at=updated_at or dt.datetime(2026, 1, 1, 10, 0, 0),
@@ -63,7 +62,6 @@ def _serialize_agent(model_cls, entity, masked_columns=None):
         'kind': entity.kind,
         'component_ref': entity.component_ref,
         'config': entity.config,
-        'enabled': entity.enabled,
         'supported_event_patterns': entity.supported_event_patterns,
         'created_at': entity.created_at,
         'updated_at': entity.updated_at,
@@ -145,7 +143,6 @@ class TestAgentServiceDebug:
             return_value={
                 'uuid': 'agent-1',
                 'kind': AGENT_KIND_AGENT,
-                'enabled': True,
                 'supported_event_patterns': ['*'],
                 'config': _agent_row().config,
             }
@@ -288,7 +285,7 @@ class TestAgentServiceListAndLookup:
         result = await AgentService(app).get_agent(WORKSPACE_UUID, 'pipeline-1')
 
         assert result['kind'] == AGENT_KIND_PIPELINE
-        assert result['enabled'] is True
+        assert 'enabled' not in result
         assert result['config'] == {'ai': {'runner': {'id': 'pipeline-runner'}}}
         assert result['capability']['message_only'] is True
 
@@ -329,7 +326,7 @@ class TestAgentServiceCreateUpdateDelete:
             'runner': {'id': runner.id, 'expire-time': 0},
             'runner_config': {runner.id: {'model': 'gpt-4.1', 'temperature': 0.2}},
         }
-        assert insert_values['enabled'] is True
+        assert 'enabled' not in insert_values
         assert insert_values['supported_event_patterns'] == AGENT_DEFAULT_EVENT_PATTERNS
         app.pipeline_service._get_default_values_from_schema.assert_called_once_with(runner.config_schema)
 

tests/unit_tests/platform/test_routing_rules.py

@@ -81,9 +81,9 @@ class TestEventRouteTrace:
                 'target_type': 'agent',
                 'target_uuid': 'agent-1',
             },
-            failure_code='processor_disabled',
-            reason='Agent target is disabled',
-            text='disabled',
+            failure_code='processor_not_found',
+            reason='Agent target is unavailable',
+            text='unavailable',
         )
 
         bot.logger.warning.assert_awaited_once()