fix: resolve confirmed character hidden bug, remove online font dependency, improve UI/UX experience

package-lock.json

@@ -37,6 +37,7 @@
         "cos-nodejs-sdk-v5": "^2.15.4",
         "express": "^5.2.1",
         "file-saver": "^2.0.5",
+        "geist": "^1.7.0",
         "ioredis": "^5.9.2",
         "jsonrepair": "^3.13.2",
         "jszip": "^3.10.1",
@@ -10207,6 +10208,15 @@
         "node": ">=18"
       }
     },
+    "node_modules/geist": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmmirror.com/geist/-/geist-1.7.0.tgz",
+      "integrity": "sha512-ZaoiZwkSf0DwwB1ncdLKp+ggAldqxl5L1+SXaNIBGkPAqcu+xjVJLxlf3/S8vLt9UHx1xu5fz3lbzKCj5iOVdQ==",
+      "license": "SIL OPEN FONT LICENSE",
+      "peerDependencies": {
+        "next": ">=13.2.0"
+      }
+    },
     "node_modules/generate-function": {
       "version": "2.3.1",
       "resolved": "https://registry.npmmirror.com/generate-function/-/generate-function-2.3.1.tgz",