feat: 完善知识库预览功能与配置管理优化

server/storage/knowledge/.index.json

@@ -14,6 +14,34 @@
       "updated_at": "2026-05-09T05:46:24.699125+00:00",
       "uploaded_by": "admin",
       "version_number": 1
+    },
+    {
+      "id": "6cad2936d57242d29d26f6fbb6314767",
+      "folder": "财务知识库",
+      "original_name": "2508.19855v3.pdf",
+      "stored_name": "6cad2936d57242d29d26f6fbb6314767__2508.19855v3.pdf",
+      "mime_type": "application/pdf",
+      "extension": "pdf",
+      "size_bytes": 4097809,
+      "sha256": "9061363b164aaba132454e239ecc107076c81f61ecab1eb39cb43405d481e46a",
+      "created_at": "2026-05-09T06:06:51.631071+00:00",
+      "updated_at": "2026-05-09T06:06:51.631071+00:00",
+      "uploaded_by": "admin",
+      "version_number": 1
+    },
+    {
+      "id": "b01fe587d3d941f0a25d500751b27094",
+      "folder": "财务知识库",
+      "original_name": "面向财务领域的大语言模型 Fin-R1 研究内容与实施计划 (1).docx",
+      "stored_name": "b01fe587d3d941f0a25d500751b27094__面向财务领域的大语言模型 Fin-R1 研究内容与实施计划 (1).docx",
+      "mime_type": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+      "extension": "docx",
+      "size_bytes": 35521,
+      "sha256": "b300ba9c4c5bb03f4cbb27b52eea1932d1594398ae7b0f0c51c6c250deaceab4",
+      "created_at": "2026-05-09T06:07:10.525556+00:00",
+      "updated_at": "2026-05-09T07:17:28.581707+00:00",
+      "uploaded_by": "admin",
+      "version_number": 3
     }
   ]
 }