[Feature] 给 “设置-终端外观” 添加行高设置

[yiding-he]

Problem / pain point — 现在的痛点

不同终端字体需要调整为不同行高才能达到视觉最佳效果。

Proposed solution — 希望的做法

给 “设置-终端外观” 添加行高设置，值为两位小数，从 0.50 到 5.00。当行高为 1 时，表示当前字体本身的高度。默认值大概给个 1.3 到 1.5 就好。

Alternatives considered — 现在的替代办法

无替代办法

Platform / 平台

No response

Related area / 相关范围

Terminal rendering / scrolling / selection — 终端渲染、滚动、选区, Settings / theme / layout / blur — 设置页、主题、布局、模糊背景

How important is this to you? / 对你有多重要

Would improve my daily workflow / 每天都会用到

Before submitting / 提交前确认

• I searched existing issues for similar requests / 已搜索，无重复

[WilliamWang1721]

Implementation is available in PR #445 (#445).

Adds an independent terminal line-height setting with persistence, live updates and Auto reset.

Current upstream checks at 6d8c6f50: all reported checks passed. Maintainer/Code Owner approval and any platform acceptance limitations described in the PR remain outstanding. This update does not close the issue.