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/agent/test_pipeline_spec.py

@@ -0,0 +1,37 @@
+from __future__ import annotations
+
+import pytest
+
+from schemas.agent.consumer_registry import AgentConsumerBinding, ConsumerRegistry
+from schemas.agent.pipeline_spec import (
+    ContextPolicy,
+    ExecutorKind,
+    PipelineSpec,
+    StageSpec,
+)
+
+
+def test_consumer_registry_rejects_duplicate_bits() -> None:
+    with pytest.raises(ValueError, match="duplicate visibility bit"):
+        ConsumerRegistry(
+            bindings=[
+                AgentConsumerBinding(agent_type="router", bit=16),
+                AgentConsumerBinding(agent_type="worker", bit=16),
+            ]
+        )
+
+
+def test_pipeline_spec_requires_non_empty_stages() -> None:
+    with pytest.raises(ValueError, match="at least 1 item"):
+        PipelineSpec(mode="worker", stages=[])
+
+
+def test_stage_spec_normalizes_stage_name() -> None:
+    spec = StageSpec(
+        stage_name=" Worker ",
+        executor_kind=ExecutorKind.REACT,
+        default_visibility_mask=1,
+        context_policy=ContextPolicy(consumer_agent_type="worker", count=20),
+    )
+
+    assert spec.stage_name == "worker"