chore(frontend): tighten eslint/axe gates, remove reader waivers (B5 done, spec ② complete)

frontend/eslint.config.js

@@ -21,25 +21,6 @@ export default tseslint.config(
       ],
     },
   },
-  {
-    // 旧阅读器 chrome 的点击区/交互元素将被 ② 阅读器改版迁入 radix 原语，
-    // 届时收严为 error；本期对存量文件降 warn（spec S1 决策）
-    files: [
-      "src/readers/**/*.tsx",
-      "src/components/Bookmarks.tsx",
-      "src/components/reader-nav.tsx",
-      "src/components/rd-slider.tsx",
-      "src/pages/Reader.tsx",
-    ],
-    rules: {
-      "jsx-a11y/click-events-have-key-events": "warn",
-      "jsx-a11y/no-static-element-interactions": "warn",
-      "jsx-a11y/no-noninteractive-element-interactions": "warn",
-      // 键盘焦点容器:CBZ/PDF 阅读器根 div 用 tabIndex={0} 接方向键翻页,
-      // 与上面三条同属 ② 改版范围（radix 原语自带焦点管理），本期随块降 warn
-      "jsx-a11y/no-noninteractive-tabindex": "warn",
-    },
-  },
   {
     files: ["e2e/**/*.ts"],
     // e2e 是 Playwright 脚本，测试工具链的动态类型用法（如 locator/fixture 包装）允许 any