fix: 处理 Copilot 二轮 review 的 10 条评论

- BrowserView: 即使 host 在白名单，GUI 自身 origin 永不给 allow-same-origin（裸 host 条目覆盖所有端口时可提权）
- intercept: revealInExplorer 相对路径经 resolveSidebarPath 解析后再 revealPaths（交付物路径是相对的）
- intercept: ctx.betterSidebar 改为 ctx.get（#357 纤维链读取约定）
- FileTree/EditorHost/TreePanel/tabs: 把 revealed 贯通到树行渲染 + 高亮类 + scrollIntoView（此前高亮永不渲染）
- state.revealPaths: 重建祖先目录时保留前导分隔符（POSIX/UNC 此前目录永远折叠）
- state.schedulePersist: 仅活动会话写入全局宽度（targeted open 不再用非活动会话的过期宽度覆盖拖拽值）
- browser.probe: GET 回退显式取消 body（否则流式/大响应挂住 socket）
- terminal-font: leading generic 前只放 symbols-only 字体；fully-patched 放 generic 后（避免 hijack 度量字体）
- sidebar.module.css: 恢复拖拽反馈（#130 的 silent resize 与 PR 描述冲突，取 HEAD）
- Sidebar: 剩余 4 处 ctx.betterSidebar 改 ctx.get
- tests: 补 revealPaths/iframeSandboxFor/terminal-font 回归测试 + EditorHost/FileTree 测试补 revealed prop

src/client/FileTree.tsx

@@ -106,6 +106,8 @@ export function FileTree(props: {
   sessionId: string
   cwd: string | undefined
   expanded: string[]
+  /** Files highlighted by a "Show in folder" reveal (absolute paths). */
+  revealed: string[]
   onToggle: (path: string) => void
   onOpenFile: (path: string) => void
   /** Context-menu "open in a new tab" (file rows; absent → no entry). */
@@ -134,7 +136,7 @@ export function FileTree(props: {
   /** True while an upload is in flight (drops are ignored). */
   busy: boolean
 }) {
-  const { sessionId, cwd, expanded, onToggle, onOpenFile, onOpenFileNewTab, onOpenFileSide, openWithTargets, openWithPinned, openWithSsh, onOpenWith, onToggleOpenWithPin, onReferenceFile, refreshTick, onUploadRequest, busy } = props
+  const { sessionId, cwd, expanded, revealed, onToggle, onOpenFile, onOpenFileNewTab, onOpenFileSide, openWithTargets, openWithPinned, openWithSsh, onOpenWith, onToggleOpenWithPin, onReferenceFile, refreshTick, onUploadRequest, busy } = props
   const [data, setData] = useState<Record<string, LevelData>>({})
   const dataRef = useRef(data)
   /** The row whose path was just copied ("copied" label replaces its button). */
@@ -274,6 +276,16 @@ export function FileTree(props: {
     for (const dir of expanded) loadDir(dir)
   }, [cwd, expanded, refreshTick, loadDir])
 
+  // Bring a "Show in folder" reveal into view: the ancestors expand above
+  // (revealPaths), but the row may not be scrolled into sight — a reveal on
+  // a long tree should surface the highlighted file. Re-runs when the tree
+  // data or reveal set changes (the row appears after its level loads).
+  useEffect(() => {
+    if (revealed.length === 0) return
+    const row = bodyRef.current?.querySelector('[data-dsh-revealed]')
+    row?.scrollIntoView({ block: 'center', behavior: 'smooth' })
+  }, [revealed, data])
+
   /** Copy `text`; on success flip the row's copied label for a moment. */
   const copyPath = useCallback((text: string, path: string): void => {
     void writeClipboard(text).then((ok) => {
@@ -431,7 +443,9 @@ export function FileTree(props: {
               className={clsx(
                 css.explorerRow, css.explorerDir, entry.hidden && css.explorerHidden,
                 dropTarget === entry.path && css.explorerRowDropTarget,
+                revealed.includes(entry.path) && css.explorerRowRevealed,
               )}
+              data-dsh-revealed={revealed.includes(entry.path) ? 'true' : undefined}
               style={{ paddingLeft: depth * 22 + 6 }}
               onClick={() => { onToggle(entry.path) }}
               onKeyDown={(event) => {
@@ -461,7 +475,9 @@ export function FileTree(props: {
           className={clsx(
             css.explorerRow, entry.hidden && css.explorerHidden, entry.broken && css.explorerBroken,
             dropTarget === parentOf(entry.path) && css.explorerRowDropTarget,
+            revealed.includes(entry.path) && css.explorerRowRevealed,
           )}
+          data-dsh-revealed={revealed.includes(entry.path) ? 'true' : undefined}
           style={{ paddingLeft: depth * 22 + 6 }}
           title={entry.broken ? `${entry.path} — ${t('brokenSymlink')}` : entry.path}
           onClick={() => { onOpenFile(entry.path) }}