feat(server): add workbench API, DSH planner worker and RAG pipeline

server/tests/test_default_composer.py

@@ -0,0 +1,42 @@
+from sqlmodel import Session, SQLModel, create_engine, select
+
+from app.agents.default_composer import resolve_composer_agent
+from app.agents.snapshot import freeze_stage_snapshot
+from app.models import Agent
+
+
+def test_composer_is_available_without_a_resource_or_canvas():
+    engine = create_engine("sqlite://")
+    SQLModel.metadata.create_all(engine)
+    with Session(engine) as session:
+        composer = resolve_composer_agent(session)
+        assert composer.id == 0
+        assert composer.role == "composer"
+        assert composer.rules
+        assert session.exec(select(Agent)).all() == []
+        assert freeze_stage_snapshot(session)["composer"]["role"] == "composer"
+
+
+def test_composer_does_not_use_another_users_private_agent():
+    engine = create_engine("sqlite://")
+    SQLModel.metadata.create_all(engine)
+    with Session(engine) as session:
+        session.add(Agent(name="私人组合", role="composer", owner_user_id=12,
+                          visibility="private", rules="private rules"))
+        session.commit()
+        assert resolve_composer_agent(session).id == 0
+
+
+def test_existing_system_configuration_is_preserved():
+    engine = create_engine("sqlite://")
+    SQLModel.metadata.create_all(engine)
+    with Session(engine) as session:
+        configured = Agent(name="组合 Agent", role="composer", builtin=True,
+                           rules="configured rules")
+        session.add(configured)
+        session.commit()
+        assert resolve_composer_agent(session).id == configured.id
+        configured.status = "disabled"
+        session.add(configured)
+        session.commit()
+        assert resolve_composer_agent(session).id == 0