整理菜单栏内容显示选项

[1254455745]

这个 PR 重新整理菜单栏设置里的内容显示选项，保留原软件命名，同时把几个显示开关拆得更清楚。

改动内容：

• 增加显示软件图标、股票代码、股票名称等开关。
• 支持菜单栏不显示股票代码。
• 兼容旧的“不带代码”滚动设置迁移。
• 菜单栏渲染根据设置决定是否显示代码和名称。

验证：

• 单独分支构建通过。

[pullfrog]

✅ No new issues found.

Reviewed changes — This PR reorganizes menu bar content display options into a dedicated "Display Content" section, adds three new toggles (showAppIcon, showQuoteCode, showQuoteName), migrates the legacy .scrollNoCode display mode to .scroll + showQuoteCode = false, and refactors icon/text layout positioning across all four ticker view types.

• Add showAppIcon, showQuoteCode, showQuoteName preferences — Three new @Published properties in TickerPreferences following the established persistence pattern
• Legacy .scrollNoCode migration — On init, detects the old mode and maps to .scroll + showQuoteCode = false, persisting both changes
• leadingTextX refactoring — All four ticker views extract icon-aware horizontal offset into a private computed property, replacing hardcoded iconWidth + 6 calculations
• Conditional icon rendering — Each view's draw(_:) gates icon behind if showsIcon
• Conditional quote text in TickerRenderer — piece(for:) conditionally appends code and name segments
• UI reorganization — New "Display Content" Section in TickerPane; code/name toggles shown only for scroll and carousel modes
• Localization — Four new .xcstrings entries (en + zh-Hans)

  ^{｜ View workflow run ｜ Using DeepSeek Flash ｜ 𝕏}

[TNT-Likely]

@1254455745 多谢拆分提交!这个 PR 目前和 main 有冲突了 —— #15 / #18(自动宽度)/ #21 / #22 已经合入 main,和本 PR 改动了同一批菜单栏 ticker 文件,所以产生了冲突。麻烦 rebase 到最新 main、解决冲突后再推一下,我这边复测通过就合入。🙏

[1254455745]

重新提交啦，你看看～