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fix(i18n): match browser locale tags precisely - #39
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zhengkunwang223 merged 1 commit intoSep 23, 2026
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修复首次访问时浏览器语言偏好的匹配问题。原实现按字符串前缀匹配，会把
zha误判为中文，并让格式错误的标签抢占后续有效偏好。在
frontend/src/i18n.tsx内使用Intl.Locale解析并规范化标签，精确匹配中文和英文，跳过不支持或格式错误的标签。保留显式字形优先、中文地区回退和最终英文回退规则，以及手动语言选择的优先级。本 PR 只修改
frontend/src/i18n.tsx，无需额外的locale.ts模块。验证：
pnpm build：TypeScript 类型检查和 Vite 生产构建通过。