v0.2.0 — 侧边栏层级：最近任务成为独立折叠区块 / Recent tasks as a section-level block

中文

侧边栏层级调整：「最近任务」现在是与「工作区」同层的独立折叠区块。

• 两块各自折叠：官方行自带的箭头收起它自己那一组；标题行前新增的箭头收起其它工作区分组（「最近任务」不受影响）。
• 「最近任务」下的对话行相对它的标题缩进一级；它仍然是真工作区记录、仍钉在末位，官方行为（改名、搜索、拖拽排序、折叠）一个没丢。
• 折叠状态只存在你自己的浏览器里（dsh.recent-tasks.workspaces-collapsed.v1），不上报、不同步。
• 前提不成立时自动停用且不留残留：单列表、搜索中、56px 细栏、树模式下被嵌套、官方结构变化；切回来立刻恢复。:has() 不可用时只丢开关、保留换装。
• 纯表现层：不写工作区数据、不调 host、全文只用一个选择器，且只认官方稳定属性（data-row-key / role / 内联 --dsh-workspace-indent）——从不依赖随版本变化的官方 class 哈希。

发布前抓掉的一个真故障：这一版的第一稿在真机上根本不会生效——官方把每一行都包在 HoverCard 的 <span> 里（ui-workspace:2043 / :2272，包裹体是 jsxs("span", {className: cn(Gn.root, …)})），因此"行的父节点就是分组容器""会话行在容器直下"两个前提都不成立，定位链直接判停用、缩进规则永不匹配。现已沿父链上溯到列表的直接子元素、并递归打标签；独立复核在真实浏览器引擎里用 0.2.1-rc.2 的官方 CSS 复跑验证通过，回归测试的假 DOM 也改成按真实结构包裹。

测试 75/75（npm run verify，含制品契约守卫；6 条关键守卫另做变异测试证明会挂）。

安装：dsh plugin --profile desktop add <附带的 tarball>，或 npm i dsh-recent-tasks。

English

The sidebar hierarchy change: Recent tasks is now its own collapsible block beside the workspaces section.

• The two blocks collapse independently: the official arrow collapses its own group, while the new arrow in front of the section title collapses the other workspace groups (Recent tasks stays put).
• Chat rows under Recent tasks sit one indent step in from its title. It is still a real workspace record pinned last, and nothing official is lost (rename, search, drag-reorder, collapse).
• The collapse flag lives only in your browser (dsh.recent-tasks.workspaces-collapsed.v1); it is never reported or synced.
• It disables itself and leaves nothing behind when the anchors are not right: flat list, search, the 56px rail, tree-mode nesting, or an official structure change — and it re-applies the moment they come back. Where :has() is unsupported it drops only the toggle and keeps the restyle.
• Presentation only: no workspace data written, no host call, one document-wide selector, and it keys on official stable attributes only (data-row-key, role, the inline --dsh-workspace-indent) — never on the build-hash class names.

A real defect caught before release: the first cut would never have activated on a real machine — every official row is wrapped in a HoverCard <span> (ui-workspace:2043 / :2272, jsxs("span", {className: cn(Gn.root, …)})), so "the row's parent is the group container" and "sessions are its direct children" were both false: the adapter disabled itself and the indent rule matched nothing. It now climbs to the list's direct child and tags recursively; an independent review replayed it in a real browser engine against the extracted 0.2.1-rc.2 CSS, and the regression tests' fake DOM models the wrapper.

75/75 tests pass (npm run verify, including the artifact contract guards; six key guards were mutation-tested).

Install: dsh plugin --profile desktop add <attached tarball>, or npm i dsh-recent-tasks.