breaking(tabbar): 收敛底部标签栏设计与公开契约 - #1085
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…abbar-design-alignment # Conflicts: # tdesign-component/example/lib/base/example_widget.dart # tdesign-component/example/test/fonts/README.md # tdesign-component/tool/component_test_manifest.dart
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🤔 这个 PR 的性质是？
🔗 相关 Issue
#1027
💡 需求背景和解决方案
TabBar 将内容类型、选项选中样式、容器外形和图文布局分离；公开 Demo 包含三个分组、九个四项标签栏实例及七个代码入口。
variant拆分为type/itemStyle/style/layout，useVerticalDivider更名为split；value/onChanged管理受控选择，Theme 只保存子树视觉默认值。none/linear/elastic动态切换的位置失步和中断动画跳变；Demo 状态由页面 State 持有，打开代码不会重置选择。双层级初始选中“我的”，菜单为“基本信息/个人主页/设置”。TTabBarItemWithBadge/PopRoute/PopupDialog/PopupDialogState/PanelWithDownArrow私有化；调用方应使用TTabBar与公开菜单配置组合，不依赖内部路由和绘制实现。Spec 与证据：行为契约、分轮验收记录、浅色整页、深色整页、浅色菜单展开、深色菜单展开。
本轮本地验证：Flutter 3.32.0/3.47.0 TabBar/Text/工具 67/67，Demo 5 项与实际七个核心片段编译通过，两版本严格 analyze 零问题。TabBar 覆盖率 518/531（97.55%），Text 219/222（98.65%）。Linux 3.32.0 组件明暗原基线 14/14；整页与菜单展开明暗 4/4 严格复跑，无像素容差。
设计参考：固定 Figma 节点。本轮未重跑移动设备逐像素对照或 release build；历史设备和构建证据不代替当前验证。远端 CI 与新一轮 CNB Review 以推送后的新 head 为准。
📝 更新日志
breaking(tabbar): 将
variant拆分为type、itemStyle、style与layout，将useVerticalDivider更名为split，移除 Theme 中的行为与结构选择器breaking(tabbar): 不再公开内部徽标适配项、弹层路由、弹层状态与绘制器，请使用
TTabBar和公开菜单配置组合feat(tabbar): 支持横向图文布局并完善文本、徽标、双层级与胶囊示例
fix(tabbar): 修复局部文字主题、菜单主题与面板背景覆盖以及空值主题插值问题
fix(tabbar): 修复指示器动画模式切换和连续切换时的位置跳变
本条 PR 不需要纳入 Changelog
☑️ 请求合并前的自查清单
type(<scope>?): 修改描述。示例：
fix(TBottomTabBar): 修复 iconText 模式底部溢出