feat(home): 优化主页交互并移除卡片布局

[iamsyc]

变更

• 优化主页显示器操作、共享设置与头部信息布局
• 删除设置中的外观区和主页布局切换
• 删除卡片布局、外观偏好、布局注册表与相关本地化
• 主页固定为列表布局，保留通用布局配置与上下文
• 更新单元测试与 UI 冒烟测试
• 删除 CI 中废弃的卡片布局 UI smoke，并对齐列表测试选择器

原因

卡片布局入口较深，实际使用价值和视觉效果有限。列表布局更适合作为唯一主页呈现方式。

本地验证

• 相关 Swift 单元测试：7 项通过
• Go 单元测试：2 个包通过
• macOS arm64 Debug build：通过，零编译错误和警告
• 主页列表 UI smoke：通过
• 设置窗口 UI smoke：通过
• 工作流静态门禁：通过
• git diff --check、本地化 JSON 校验与 SwiftFormat lint：通过

[github-actions]

CI Summary

Run: Open

Check	Status	Details
Change Scope	ui_code	code=true ui=true script=true product=true test=true ci=true release=true dependency=false tooling=false docs_only=false unknown=false
Required Gates	derived	static=true dependency=false unit=true xcode=true ui=true release=true PRs always run static, unit, and xcode build gates.
Dependency Review	skipped	required=false high and critical vulnerabilities block
Static Checks	success	required=true actionlint, shellcheck, shfmt, SwiftFormat, SwiftLint, action pinning
Unit Tests	success	required=true Swift tests: 611 Go packages: 2 Reason: passed Artifact: unit-gate
Xcode Build	success	required=true Debug build with zero warning scan Artifact: xcode-build
UI Smoke	success	required=true Failure classification is written by ui-smoke-summary.json in each artifact. Artifacts: ui-smoke-baseline, ui-smoke-listLayout, ui-smoke-listNarrow, ui-smoke-previewRecovery, ui-smoke-previewWindowPayload
Release Smoke	success	required=true arm64=success intel64=skipped PR release smoke requires arm64 only. Artifacts: release-smoke-arm64 Release verify summaries are produced by release.yml before publishing.
Artifacts	link	Open artifacts
CI Gate	success	single branch protection check