feat: 移除 Kimi 平台残留代码，使用 JWT_SECRET 替代 APP_SECRET

- 移除 kimi-plugin-inspect-react 依赖
- 清理 vite.config.ts 中 kimi 插件引用

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

package.json

@@ -83,7 +83,7 @@
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.4.24",
     "globals": "^16.5.0",
-    "kimi-plugin-inspect-react": "^1.0.3",
+
     "postcss": "^8.5.6",
     "prettier": "^3.7.4",
     "tailwindcss": "^3.4.19",