feat: browser-side security check

package-lock.json

@@ -9,11 +9,13 @@
       "version": "0.1.0",
       "dependencies": {
         "@types/qrcode": "^1.5.6",
+        "@types/zxcvbn": "^4.4.5",
         "qrcode": "^1.5.4",
         "react": "^19.0.0",
         "react-dom": "^19.0.0",
         "react-router-dom": "^6.28.0",
-        "zustand": "^5.0.2"
+        "zustand": "^5.0.2",
+        "zxcvbn": "^4.4.2"
       },
       "devDependencies": {
         "@testing-library/jest-dom": "^6.6.3",
@@ -1886,6 +1888,12 @@
         "@types/react": "^19.2.0"
       }
     },
+    "node_modules/@types/zxcvbn": {
+      "version": "4.4.5",
+      "resolved": "https://registry.npmjs.org/@types/zxcvbn/-/zxcvbn-4.4.5.tgz",
+      "integrity": "sha512-FZJgC5Bxuqg7Rhsm/bx6gAruHHhDQ55r+s0JhDh8CQ16fD7NsJJ+p8YMMQDhSQoIrSmjpqqYWA96oQVMNkjRyA==",
+      "license": "MIT"
+    },
     "node_modules/@typescript-eslint/eslint-plugin": {
       "version": "8.66.0",
       "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.66.0.tgz",
@@ -8032,6 +8040,12 @@
           "optional": true
         }
       }
+    },
+    "node_modules/zxcvbn": {
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/zxcvbn/-/zxcvbn-4.4.2.tgz",
+      "integrity": "sha512-Bq0B+ixT/DMyG8kgX2xWcI5jUvCwqrMxSFam7m0lAf78nf04hv6lNCsyLYdyYTrCVMqNDY/206K7eExYCeSyUQ==",
+      "license": "MIT"
     }
   }
 }