feat(agentscope): add memory system and automation job support

- Add consumer_registry and pipeline_registry for runtime orchestration
- Add Visibility schema for message filtering
- Add PipelineSpec for agent pipeline configuration
- Add automation job models and configuration
- Remove memory_prompt.py (consolidated into memory system)
- Update runtime components: context_loader, context_service, orchestrator, runner, tasks
- Update toolkit: tool_config, tool_middleware, custom tools (calendar, user_lookup)
- Add auth_helpers and calendar_domain utilities
- Add system_agents.yaml configuration

backend/tests/unit/schemas/automation/test_config.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+import pytest
+
+from schemas.automation.config import AutomationJobConfig, default_memory_job_config
+
+
+def test_default_memory_job_config_has_expected_defaults() -> None:
+    config = default_memory_job_config()
+
+    assert config.agent_type.value == "memory"
+    assert config.model_code == "qwen3.5-flash"
+    assert config.context.source.value == "latest_chat"
+
+
+def test_automation_job_config_rejects_non_flash_model() -> None:
+    with pytest.raises(ValueError, match="model_code must be qwen3.5-flash"):
+        AutomationJobConfig.model_validate(
+            {
+                "agent_type": "memory",
+                "model_code": "qwen-plus",
+                "enabled_tools": ["calendar.read"],
+                "input_template": "x",
+                "context": {
+                    "source": "latest_chat",
+                    "window_mode": "day",
+                    "window_count": 2,
+                },
+            }
+        )