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/src/core/agentscope/events/persistence.py

@@ -29,6 +29,7 @@ class MessageRepository:
         output_tokens: int = 0,
         cost: Decimal = Decimal("0"),
         latency_ms: int | None = None,
+        visibility_mask: int = 0,
     ) -> AgentChatMessage:
         message = AgentChatMessage(
             session_id=session_id,
@@ -42,6 +43,7 @@ class MessageRepository:
             output_tokens=output_tokens,
             cost=cost,
             latency_ms=latency_ms,
+            visibility_mask=max(int(visibility_mask), 0),
         )
         self._session.add(message)
         await self._session.flush()