feat: 优化前端页面和组件

- 重构 Agents 页面
- 优化 Knowledge 页面
- 更新侧边栏导航
- 添加前端依赖

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/package-lock.json

@@ -20,6 +20,7 @@
         "vue-router": "^4.3.0"
       },
       "devDependencies": {
+        "@types/papaparse": "^5.5.2",
         "@vitejs/plugin-vue": "^5.0.4",
         "autoprefixer": "^10.4.19",
         "postcss": "^8.4.38",
@@ -982,6 +983,27 @@
         "@types/lodash": "*"
       }
     },
+    "node_modules/@types/node": {
+      "version": "25.3.5",
+      "resolved": "https://registry.npmmirror.com/@types/node/-/node-25.3.5.tgz",
+      "integrity": "sha512-oX8xrhvpiyRCQkG1MFchB09f+cXftgIXb3a7UUa4Y3wpmZPw5tyZGTLWhlESOLq1Rq6oDlc8npVU2/9xiCuXMA==",
+      "dev": true,
+      "license": "MIT",
+      "peer": true,
+      "dependencies": {
+        "undici-types": "~7.18.0"
+      }
+    },
+    "node_modules/@types/papaparse": {
+      "version": "5.5.2",
+      "resolved": "https://registry.npmmirror.com/@types/papaparse/-/papaparse-5.5.2.tgz",
+      "integrity": "sha512-gFnFp/JMzLHCwRf7tQHrNnfhN4eYBVYYI897CGX4MY1tzY9l2aLkVyx2IlKZ/SAqDbB3I1AOZW5gTMGGsqWliA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/web-bluetooth": {
       "version": "0.0.20",
       "resolved": "https://registry.npmmirror.com/@types/web-bluetooth/-/web-bluetooth-0.0.20.tgz",
@@ -2624,6 +2646,13 @@
         "node": ">=14.17"
       }
     },
+    "node_modules/undici-types": {
+      "version": "7.18.2",
+      "resolved": "https://registry.npmmirror.com/undici-types/-/undici-types-7.18.2.tgz",
+      "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/update-browserslist-db": {
       "version": "1.2.3",
       "resolved": "https://registry.npmmirror.com/update-browserslist-db/-/update-browserslist-db-1.2.3.tgz",