refactor(ui): 优化配置弹窗布局与暗色模式样式

[duanyongcheng]

Optimize config dialog layout and dark mode styles

改进高级配置弹窗的布局结构，使内容区域支持独立滚动
Improve layout of advanced config dialog to support independent content scrolling 恢复 Escape 键关闭弹窗的功能以提升交互体验
Restore Escape key functionality for closing dialogs to improve UX 优化配置卡片边框并为提示信息添加暗色模式适配
Optimize card borders and add dark mode support for tip messages

[github-actions]

本评论会随各平台任务完成自动更新：
如首轮 npm run check 失败，请在本地执行 npm run check:fix → npm run check 并提交修复 commit。
如 fix 仍失败，请在本地排查并确保 npm run check 通过后再提交。
跨平台差异若无法复现，请复制日志交给 AI 获取排查建议。

平台	结果	明细	日志包	运行链接
ubuntu-22.04	✅ 直接通过	check=success / fix=skipped / recheck=skipped	pr-check-ubuntu-22.04	日志
windows-latest	✅ 直接通过	check=success / fix=skipped / recheck=skipped	pr-check-windows-latest	日志
macos-14 (arm64)	✅ 直接通过	check=success / fix=skipped / recheck=skipped	pr-check-macos-arm64	日志
macos-15 (x64)	✅ 直接通过	check=success / fix=skipped / recheck=skipped	pr-check-macos-x64	日志

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This comment auto-updates as each platform finishes:
If the first npm run check fails, run locally: npm run check:fix → npm run check and commit the fix.
If fix still fails, investigate locally and ensure npm run check passes before committing.
If cross-platform issues can't be reproduced, copy logs to an AI for hints.

Platform	Status	Detail	Artifact	Run
ubuntu-22.04	✅ Passed	check=success / fix=skipped / recheck=skipped	pr-check-ubuntu-22.04	日志
windows-latest	✅ Passed	check=success / fix=skipped / recheck=skipped	pr-check-windows-latest	日志
macos-14 (arm64)	✅ Passed	check=success / fix=skipped / recheck=skipped	pr-check-macos-arm64	日志
macos-15 (x64)	✅ Passed	check=success / fix=skipped / recheck=skipped	pr-check-macos-x64	日志