diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 52d1f98..9fc149f 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -14,7 +14,7 @@
         "react": "^19.2.7",
         "react-dom": "^19.2.7",
         "react-i18next": "^17.0.11",
-        "react-router-dom": "^7.18.2"
+        "react-router-dom": "^6.30.4"
       },
       "devDependencies": {
         "@types/react": "^19.2.17",
@@ -459,6 +459,15 @@
         "react-dom": ">= 16.8"
       }
     },
+    "node_modules/@remix-run/router": {
+      "version": "1.23.3",
+      "resolved": "https://registry.npmjs.org/@remix-run/router/-/router-1.23.3.tgz",
+      "integrity": "sha512-4An71tdz9X8+3sI4Qqqd2LWd9vS39J7sqd9EU4Scw7TJE/qB10Flv/UuqbPVgfQV9XoK8Np6jNquZitnZq5i+Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
     "node_modules/@rolldown/binding-android-arm64": {
       "version": "1.1.5",
       "resolved": "https://registry.npmjs.org/@rolldown/binding-android-arm64/-/binding-android-arm64-1.1.5.tgz",
@@ -798,19 +807,6 @@
         }
       }
     },
-    "node_modules/cookie": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/cookie/-/cookie-1.1.1.tgz",
-      "integrity": "sha512-ei8Aos7ja0weRpFzJnEA9UHJ/7XQmqglbRwnf2ATjcB9Wq874VKH9kfjjirM6UhU2/E5fFYadylyhFldcqSidQ==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/express"
-      }
-    },
     "node_modules/csstype": {
       "version": "3.2.3",
       "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.2.3.tgz",
@@ -1343,41 +1339,35 @@
       }
     },
     "node_modules/react-router": {
-      "version": "7.18.2",
-      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.18.2.tgz",
-      "integrity": "sha512-aUVMjFm3GAPTTZL7oYr5E7ETiqfQCHRLH+B+5afnICvf0r7kkK4eR6SMuwbSTJw/7t+12khT/Kahij49fqOCIg==",
+      "version": "6.30.4",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-6.30.4.tgz",
+      "integrity": "sha512-SVUsDe+DybHM/WmYKIVYhZh1o5Dcuf16yM6WjG02Q9XVFMZIJyHYhwrr6bFBXZkVP6z69kNkMyBCujt8FaFLJA==",
       "license": "MIT",
       "dependencies": {
-        "cookie": "^1.0.1",
-        "set-cookie-parser": "^2.6.0"
+        "@remix-run/router": "1.23.3"
       },
       "engines": {
-        "node": ">=20.0.0"
+        "node": ">=14.0.0"
       },
       "peerDependencies": {
-        "react": ">=18",
-        "react-dom": ">=18"
-      },
-      "peerDependenciesMeta": {
-        "react-dom": {
-          "optional": true
-        }
+        "react": ">=16.8"
       }
     },
     "node_modules/react-router-dom": {
-      "version": "7.18.2",
-      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.18.2.tgz",
-      "integrity": "sha512-AIKJ/jgGlFb3EbfCXk5Gzshiwt+l3mqbCrNjmEWMMjqQxNJ3svBa6bgzFyCC2Sw3RA0VWF1kg3uQf2OFhxb8hw==",
+      "version": "6.30.4",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-6.30.4.tgz",
+      "integrity": "sha512-q4HvNl+mmDdkS0g+MqiBZNteQJCuimWoOyHMy4T/RQLAn9Z29+E91QXRaxOujeMl2HTzRSS0KFPd7lxX3PjV0Q==",
       "license": "MIT",
       "dependencies": {
-        "react-router": "7.18.2"
+        "@remix-run/router": "1.23.3",
+        "react-router": "6.30.4"
       },
       "engines": {
-        "node": ">=20.0.0"
+        "node": ">=14.0.0"
       },
       "peerDependencies": {
-        "react": ">=18",
-        "react-dom": ">=18"
+        "react": ">=16.8",
+        "react-dom": ">=16.8"
       }
     },
     "node_modules/rolldown": {
@@ -1420,12 +1410,6 @@
       "integrity": "sha512-eNv+WrVbKu1f3vbYJT/xtiF5syA5HPIMtf9IgY/nKg0sWqzAUEvqY/xm7OcZc/qafLx/iO9FgOmeSAp4v5ti/Q==",
       "license": "MIT"
     },
-    "node_modules/set-cookie-parser": {
-      "version": "2.7.2",
-      "resolved": "https://registry.npmjs.org/set-cookie-parser/-/set-cookie-parser-2.7.2.tgz",
-      "integrity": "sha512-oeM1lpU/UvhTxw+g3cIfxXHyJRc/uidd3yK1P242gzHds0udQBYzs3y8j4gCCW+ZJ7ad0yctld8RYO+bdurlvw==",
-      "license": "MIT"
-    },
     "node_modules/source-map-js": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index 582c5e6..75eabab 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -16,7 +16,7 @@
     "react": "^19.2.7",
     "react-dom": "^19.2.7",
     "react-i18next": "^17.0.11",
-    "react-router-dom": "^7.18.2"
+    "react-router-dom": "^6.30.4"
   },
   "devDependencies": {
     "@types/react": "^19.2.17",
diff --git a/package-lock.json b/package-lock.json
index ecca435..fbe2911 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -38,7 +38,7 @@
         "react": "^19.2.8",
         "react-dom": "^19.2.8",
         "react-i18next": "^17.0.11",
-        "react-router-dom": "^7.18.2",
+        "react-router-dom": "^6.30.4",
         "sharp": "^0.35.3",
         "tar": "^7.5.22",
         "turndown": "^7.2.4",
@@ -1293,6 +1293,15 @@
         }
       }
     },
+    "node_modules/@remix-run/router": {
+      "version": "1.23.3",
+      "resolved": "https://registry.npmjs.org/@remix-run/router/-/router-1.23.3.tgz",
+      "integrity": "sha512-4An71tdz9X8+3sI4Qqqd2LWd9vS39J7sqd9EU4Scw7TJE/qB10Flv/UuqbPVgfQV9XoK8Np6jNquZitnZq5i+Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
     "node_modules/@rolldown/binding-android-arm64": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/@rolldown/binding-android-arm64/-/binding-android-arm64-1.2.1.tgz",
@@ -6156,54 +6165,35 @@
       }
     },
     "node_modules/react-router": {
-      "version": "7.18.2",
-      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.18.2.tgz",
-      "integrity": "sha512-aUVMjFm3GAPTTZL7oYr5E7ETiqfQCHRLH+B+5afnICvf0r7kkK4eR6SMuwbSTJw/7t+12khT/Kahij49fqOCIg==",
+      "version": "6.30.4",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-6.30.4.tgz",
+      "integrity": "sha512-SVUsDe+DybHM/WmYKIVYhZh1o5Dcuf16yM6WjG02Q9XVFMZIJyHYhwrr6bFBXZkVP6z69kNkMyBCujt8FaFLJA==",
       "license": "MIT",
       "dependencies": {
-        "cookie": "^1.0.1",
-        "set-cookie-parser": "^2.6.0"
+        "@remix-run/router": "1.23.3"
       },
       "engines": {
-        "node": ">=20.0.0"
+        "node": ">=14.0.0"
       },
       "peerDependencies": {
-        "react": ">=18",
-        "react-dom": ">=18"
-      },
-      "peerDependenciesMeta": {
-        "react-dom": {
-          "optional": true
-        }
+        "react": ">=16.8"
       }
     },
     "node_modules/react-router-dom": {
-      "version": "7.18.2",
-      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.18.2.tgz",
-      "integrity": "sha512-AIKJ/jgGlFb3EbfCXk5Gzshiwt+l3mqbCrNjmEWMMjqQxNJ3svBa6bgzFyCC2Sw3RA0VWF1kg3uQf2OFhxb8hw==",
+      "version": "6.30.4",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-6.30.4.tgz",
+      "integrity": "sha512-q4HvNl+mmDdkS0g+MqiBZNteQJCuimWoOyHMy4T/RQLAn9Z29+E91QXRaxOujeMl2HTzRSS0KFPd7lxX3PjV0Q==",
       "license": "MIT",
       "dependencies": {
-        "react-router": "7.18.2"
+        "@remix-run/router": "1.23.3",
+        "react-router": "6.30.4"
       },
       "engines": {
-        "node": ">=20.0.0"
+        "node": ">=14.0.0"
       },
       "peerDependencies": {
-        "react": ">=18",
-        "react-dom": ">=18"
-      }
-    },
-    "node_modules/react-router/node_modules/cookie": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/cookie/-/cookie-1.1.1.tgz",
-      "integrity": "sha512-ei8Aos7ja0weRpFzJnEA9UHJ/7XQmqglbRwnf2ATjcB9Wq874VKH9kfjjirM6UhU2/E5fFYadylyhFldcqSidQ==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/express"
+        "react": ">=16.8",
+        "react-dom": ">=16.8"
       }
     },
     "node_modules/readable-stream": {
@@ -6481,12 +6471,6 @@
         "url": "https://opencollective.com/express"
       }
     },
-    "node_modules/set-cookie-parser": {
-      "version": "2.7.2",
-      "resolved": "https://registry.npmjs.org/set-cookie-parser/-/set-cookie-parser-2.7.2.tgz",
-      "integrity": "sha512-oeM1lpU/UvhTxw+g3cIfxXHyJRc/uidd3yK1P242gzHds0udQBYzs3y8j4gCCW+ZJ7ad0yctld8RYO+bdurlvw==",
-      "license": "MIT"
-    },
     "node_modules/setimmediate": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/setimmediate/-/setimmediate-1.0.5.tgz",
diff --git a/package.json b/package.json
index 1955458..ded0a15 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "react": "^19.2.8",
     "react-dom": "^19.2.8",
     "react-i18next": "^17.0.11",
-    "react-router-dom": "^7.18.2",
+    "react-router-dom": "^6.30.4",
     "sharp": "^0.35.3",
     "tar": "^7.5.22",
     "turndown": "^7.2.4",