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docs(spec): 归档 multi-tab-keep-alive + 同步布局多页签 keep-alive 主 spec
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-11 22:13:47 +08:00

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## Why
多页签已存在,但切换页签时组件会被重建,滚动位置、搜索筛选、表单输入等状态全部丢失,后台高频「列表↔详情/表单」切换体验差。需要为布局内菜单页面启用 keep-alive,切换页签保留状态、关闭页签销毁状态。
## What Changes
- 布局内菜单页面启用 keep-alive:切换页签保留组件状态,关闭页签销毁;默认缓存,页面可通过路由 meta `keepAlive: false` 关闭缓存。
- 为 11 个菜单页面补充组件 `name`(keep-alive 缓存标识),布局用 `<keep-alive :include>` 按「打开且未关闭缓存」的页签 name 集合缓存。
## Capabilities
### Modified Capabilities
- `frontend/AD/layout`: 「多页签」需求新增 keep-alive 状态保留/销毁行为。
## Impact
- **前端**:`layouts/default.vue`(router-view 包 keep-alive)、`stores/modules/tabs.ts`(path→name 辅助 + keepAlive 字段)、11 个菜单页面加 `defineOptions({ name })`(可声明 `meta.keepAlive: false` 关闭缓存)。
- 无后端/数据变更。