chore: import upstream snapshot with attribution

backend/test/unit/backends/test_knowledge_base_backend.py

@@ -0,0 +1,21 @@
+from __future__ import annotations
+
+from types import SimpleNamespace
+
+import pytest
+
+import yuxi.agents.backends.knowledge_base_backend as knowledge_base_backend
+
+
+@pytest.mark.asyncio
+async def test_resolve_visible_knowledge_bases_requires_slug(monkeypatch):
+    async def fake_get_databases_by_uid(_uid):
+        return {"databases": [{"id": "legacy-id", "name": "Legacy"}]}
+
+    monkeypatch.setattr(knowledge_base_backend.knowledge_base, "get_databases_by_uid", fake_get_databases_by_uid)
+
+    context = SimpleNamespace(uid="u1", knowledges=["legacy-id"])
+
+    databases = await knowledge_base_backend.resolve_visible_knowledge_bases_for_context(context)
+
+    assert databases == []