fix: mobile sidebar

[seefs001]

⚠️ 提交说明 / PR Notice

Important

• 请提供人工撰写的简洁摘要，避免直接粘贴未经整理的 AI 输出。

📝 变更描述 / Description

(简述：做了什么？为什么这样改能生效？请基于你对代码逻辑的理解来写，避免粘贴未经整理的内容)

移动端不渲染base ui的Tooltip
Sheet 内容提升为 z-60，明确位于 z-50 遮罩层之上
移动端侧栏链接现在禁用触摸意图预加载

(GPT-5.6-SOL给的排查和建议 )

iOS 显示菜单高亮发生在 touchstart，但真正导航依赖后续合成的 click。
项目全局配置了：
defaultPreload: 'intent'
defaultPreloadStaleTime: 0

因此触摸侧栏链接时，TanStack Router 会在 touchstart 阶段立即执行目标路由预加载和 beforeLoad。日志页面加载完成后 DOM 和运行负载较重，这段点击前的异步工作会导致 iOS 取消后续合成 click，表现为：
• 菜单项能够高亮；
• onClick 没有执行；
• 侧栏不关闭；
• 路由不切换。

🚀 变更类型 / Type of change

• 🐛 Bug 修复 (Bug fix) - 请关联对应 Issue，避免将设计取舍、理解偏差或预期不一致直接归类为 bug
• ✨ 新功能 (New feature) - 重大特性建议先通过 Issue 沟通
• ⚡ 性能优化 / 重构 (Refactor)
• 📝 文档更新 (Documentation)

🔗 关联任务 / Related Issue

• Closes # (如有)

✅ 提交前检查项 / Checklist

• 人工确认: 我已亲自整理并撰写此描述，没有直接粘贴未经处理的 AI 输出。
• 非重复提交: 我已搜索现有的 Issues 与 PRs，确认不是重复提交。
• Bug fix 说明: 若此 PR 标记为 Bug fix，我已提交或关联对应 Issue，且不会将设计取舍、预期不一致或理解偏差直接归类为 bug。
• 变更理解: 我已理解这些更改的工作原理及可能影响。
• 范围聚焦: 本 PR 未包含任何与当前任务无关的代码改动。
• 本地验证: 已在本地运行并通过测试或手动验证，维护者可以据此复核结果。
• 安全合规: 代码中无敏感凭据，且符合项目代码规范。

📸 运行证明 / Proof of Work

(请在此粘贴截图、关键日志或测试报告，以证明变更生效)

Summary by CodeRabbit

• Bug Fixes

  • Improved mobile sidebar interaction by ensuring sidebar sheets respond to pointer input.
  • Refined sidebar menu tooltips so they appear only when relevant—when the sidebar is collapsed, a tooltip is provided, and the viewport supports it.

• Performance

  • Reduced unnecessary route preloading from mobile sidebar navigation while preserving navigation and sidebar-closing behavior.

[coderabbitai]

Walkthrough

The sidebar mobile sheet now accepts pointer events. Menu tooltips now render only for collapsed, non-mobile sidebars. Mobile navigation links disable route preloading while preserving sidebar close behavior.

Changes

Sidebar navigation

Layer / File(s)	Summary
Sidebar pointer and tooltip behavior web/src/components/ui/sidebar.tsx	The mobile sheet adds pointer-events-auto. Menu tooltips render only when tooltip data exists, the sidebar is collapsed, and the viewport is not mobile.
Mobile navigation preload control web/src/components/layout/components/nav-group.tsx, web/src/components/layout/components/sidebar-view-header.tsx	Mobile sidebar links and parent-view links set preload to false. Existing mobile-sidebar close behavior remains.
Chat navigation preload control web/src/components/layout/components/chat-presets-item.tsx	ChatMenuItem accepts an optional preload prop. Expanded mobile chat navigation passes false.

Estimated code review effort: 2 (Simple) | ~10 minutes

Poem

A rabbit checks the sidebar door,
Pointer events now work once more.
Desktop tooltips softly gleam,
Mobile links skip preload streams.
The menu closes as before.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely identifies the main change: fixing mobile sidebar behavior.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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