fix(web): clay-500 品牌主色 #FF0000 → #B96A3D + 固定 next 14.2.35

- token 重生成:--clay-500 品牌主色从占位红 #FF0000 还原为 clay #B96A3D
  (usercenter public + website tokens.gen)
- usercenter package-lock:next / eslint-config-next 从 <14.3.0 固定到 14.2.35

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JEHzjEcFzvGwgbxT6Wbt6c

web/usercenter/package-lock.json

@@ -8,7 +8,7 @@
       "name": "pangolin-usercenter",
       "version": "0.1.0",
       "dependencies": {
-        "next": "<14.3.0",
+        "next": "14.2.35",
         "react": "18.3.1",
         "react-dom": "18.3.1"
       },
@@ -17,7 +17,7 @@
         "@types/react": "18.3.3",
         "@types/react-dom": "18.3.0",
         "eslint": "8.57.0",
-        "eslint-config-next": "<14.3.0",
+        "eslint-config-next": "14.2.35",
         "typescript": "5.5.3"
       }
     },