Polish release notes and in-app help (#2070)

* feat(ui): improve changelog and help navigation

Make release notes easier to scan and reach from the app. Also keep the homepage marquee within the layout viewport so it cannot create horizontal scrolling.

* fix(website): reject duplicate release anchors

packages/app/src/i18n/resources/zh-CN.ts

@@ -787,16 +787,13 @@ export const zhCN: TranslationResources = {
     },
     help: {
       trigger: "帮助与支持",
-      troubleshoot: "问题排查",
+      sectionHelp: "帮助",
       diagnostics: "运行诊断",
-      diagnosticsDescription: "收集应用和已连接 Host 的详细信息",
       shortcuts: "键盘快捷键",
-      shortcutsDescription: "查看可用的键盘快捷键",
       reportIssue: "报告问题",
       discord: "Discord",
-      discordDescription: "适合快速求助和讨论",
       github: "创建 GitHub Issue",
-      githubDescription: "报告可复现的 bug",
+      whatsNew: "新功能",
       version: "Paseo {{version}}",
     },
     sections: {