fix: 补齐知识库元数据管理与生命周期校验

ai_knowledge_base_v2/apps/backend/alembic/versions/0008_unique_knowledge_feishu_node.py

@@ -0,0 +1,20 @@
+from __future__ import annotations
+
+from alembic import op
+
+revision = "0008_unique_knowledge_feishu_node"
+down_revision = "0007_knowledge_agent_rebuild"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_unique_constraint(
+        "uq_knowledge_feishu_node",
+        "sys_knowledge",
+        ["feishu_space_id", "feishu_node_id"],
+    )
+
+
+def downgrade() -> None:
+    op.drop_constraint("uq_knowledge_feishu_node", "sys_knowledge", type_="unique")