fix: 知识库添加时 vec 变量未初始化导致 embedding 禁用时报错

feishu_config_2026-04-02.json

@@ -0,0 +1,14 @@
+{
+  "feishu": {
+    "app_id": "cli_a8b50ec0eed1500d",
+    "table_id": "tblnl3vJPpgMTSiP",
+    "status": "active",
+    "app_secret": "***"
+  },
+  "system": {
+    "sync_limit": 10,
+    "ai_suggestions_enabled": true,
+    "auto_sync_interval": 0,
+    "last_sync_time": null
+  }
+}

src/knowledge_base/knowledge_manager.py

@@ -356,6 +356,7 @@ class KnowledgeManager:
 
             # 生成 embedding
             embedding_json = None
+            vec = None
             text_for_embedding = question + " " + answer
             if self.embedding_enabled:
                 vec = self.embedding_client.embed_text(text_for_embedding)