✨ feat(vscode): webview 移交/接管按钮、选人弹窗与待接管角标

Claude-Session: https://claude.ai/code/session_011cEyL6k351U2BzX1Qmygph

vscode/webview-ui/src/hooks/useIssues.ts

@@ -283,6 +283,18 @@ export interface UseIssuesResult {
    */
   pendingSelectId: string | null
   clearPendingSelect: () => void
+  /** 当前 Gitea login，来自最近一次 `issues/update`；undefined = 身份未知。 */
+  me: string | undefined
+  /** 最近一次 `requestHandoffUsers` 的结果；`null` = 仍在加载或尚未请求。 */
+  handoffUsers: { issueNumber: number, users: string[] } | null
+  /** 拉取某工单可移交的候选用户列表，结果通过 `handoffUsers` 返回。 */
+  requestHandoffUsers: (issueNumber: number) => void
+  /** 发起移交：删本机 worktree、打包会话记录挂到附件、把工单指派给对方。 */
+  startHandoff: (issueNumber: number, to: string) => void
+  /** 接管一个待接管工单：拉取移交附件、恢复会话与 worktree。 */
+  acceptHandoff: (issueNumber: number) => void
+  /** 是否有移交/接管流程正在该工单上跑，直到扩展端回 `handoff/done` 才清除。 */
+  isHandoffRunning: (issueNumber: number) => boolean
 }
 
 export function useIssues(): UseIssuesResult {
@@ -308,6 +320,10 @@ export function useIssues(): UseIssuesResult {
   const [envLockTitle, setEnvLockTitle] = useState<string>('正在检查 .env 锁定状态…')
   const prDiffSummaryRunningRef = useRef<Set<number>>(new Set())
   const [prDiffSummaryRunning, setPrDiffSummaryRunning] = useState<ReadonlySet<number>>(() => new Set())
+  const [me, setMe] = useState<string | undefined>(undefined)
+  const [handoffUsers, setHandoffUsers] = useState<{ issueNumber: number, users: string[] } | null>(null)
+  const handoffRunningRef = useRef<Set<number>>(new Set())
+  const [handoffRunning, setHandoffRunning] = useState<Set<number>>(new Set())
 
   const clearPrDiffSummaryRunning = useCallback((issueNumber: number): void => {
     if (!prDiffSummaryRunningRef.current.delete(issueNumber))
@@ -454,6 +470,35 @@ export function useIssues(): UseIssuesResult {
     return prDiffSummaryRunning.has(issueNumber)
   }, [prDiffSummaryRunning])
 
+  const requestHandoffUsers = useCallback((issueNumber: number): void => {
+    setHandoffUsers(null)
+    postMessage({ type: 'handoff/users', issueNumber })
+  }, [])
+
+  const markHandoffRunning = useCallback((issueNumber: number, running: boolean): void => {
+    if (running)
+      handoffRunningRef.current.add(issueNumber)
+    else
+      handoffRunningRef.current.delete(issueNumber)
+    setHandoffRunning(new Set(handoffRunningRef.current))
+  }, [])
+
+  const startHandoff = useCallback((issueNumber: number, to: string): void => {
+    if (handoffRunningRef.current.has(issueNumber))
+      return
+    markHandoffRunning(issueNumber, true)
+    postMessage({ type: 'handoff/start', issueNumber, to })
+  }, [markHandoffRunning])
+
+  const acceptHandoff = useCallback((issueNumber: number): void => {
+    if (handoffRunningRef.current.has(issueNumber))
+      return
+    markHandoffRunning(issueNumber, true)
+    postMessage({ type: 'handoff/accept', issueNumber })
+  }, [markHandoffRunning])
+
+  const isHandoffRunning = useCallback((issueNumber: number): boolean => handoffRunning.has(issueNumber), [handoffRunning])
+
   const openPr = useCallback((pr: string): void => {
     postMessage({ type: 'pr/open', pr })
   }, [])
@@ -615,6 +660,7 @@ export function useIssues(): UseIssuesResult {
           setScope(msg.scope)
           setGlobalAutoReview(msg.globalAutoReview)
           setYoutrackConfigured(msg.youtrackConfigured)
+          setMe(msg.me)
           break
         case 'issues/error':
           setState({ status: 'error', message: msg.message })
@@ -636,6 +682,12 @@ export function useIssues(): UseIssuesResult {
         case 'issue/pr-diff-summary-done':
           clearPrDiffSummaryRunning(msg.issueNumber)
           break
+        case 'handoff/users-result':
+          setHandoffUsers({ issueNumber: msg.issueNumber, users: msg.users })
+          break
+        case 'handoff/done':
+          markHandoffRunning(msg.issueNumber, false)
+          break
         case 'issue/remove':
           // 工单被删除或关闭 — 从 open issues 数组移除。如果它是当前选中的，挑下一张
           // 同列的卡片（按该列排序取首张近邻：完成列按合并时间，其余按 number 降序）；同列没有则交给 App.tsx 的
@@ -815,7 +867,7 @@ export function useIssues(): UseIssuesResult {
     postMessage({ type: 'branch-sync/check' })
     postMessage({ type: 'env-lock/check' })
     return cleanup
-  }, [clearPrDiffSummaryRunning])
+  }, [clearPrDiffSummaryRunning, markHandoffRunning])
 
-  return { state, settings, globalAutoReview, youtrackConfigured, importYouTrack, toasts, profiles, setIssues, refresh, scope, toggleScope, saveSettings, listYouTrackProjects, youtrackProjects, dismissSettings, requestEditAuth, createIssue, dismissToast, openUrl, resumeSession, resumeReviewSession, startTestSession, resumeTestSession, focusSession, openFile, implement, generatePrDiffSummary, isPrDiffSummaryRunning, openPr, openWorktree, deleteWorktree, mergeBranch, deleteIssue, closeIssue, closeSessionTab, startBrainstormSession, changeColumn, setDependency, clearDependency, updateIssueAutoReview, updateIssueProfilePath, updateIssueBrainstormProfilePath, updateIssueTestProfilePath, logs, fetchLogs, clearLogs, pendingSelectId, clearPendingSelect, commitRunning, runCommit, hasChanges, branchSyncBehind, branchSyncRunning, branchSyncDisabled, branchSyncTitle, runBranchSync, envLocked, envFileCount, envLockRunning, envLockTitle, toggleEnvLock }
+  return { state, settings, globalAutoReview, youtrackConfigured, importYouTrack, toasts, profiles, setIssues, refresh, scope, toggleScope, saveSettings, listYouTrackProjects, youtrackProjects, dismissSettings, requestEditAuth, createIssue, dismissToast, openUrl, resumeSession, resumeReviewSession, startTestSession, resumeTestSession, focusSession, openFile, implement, generatePrDiffSummary, isPrDiffSummaryRunning, openPr, openWorktree, deleteWorktree, mergeBranch, deleteIssue, closeIssue, closeSessionTab, startBrainstormSession, changeColumn, setDependency, clearDependency, updateIssueAutoReview, updateIssueProfilePath, updateIssueBrainstormProfilePath, updateIssueTestProfilePath, logs, fetchLogs, clearLogs, pendingSelectId, clearPendingSelect, commitRunning, runCommit, hasChanges, branchSyncBehind, branchSyncRunning, branchSyncDisabled, branchSyncTitle, runBranchSync, envLocked, envFileCount, envLockRunning, envLockTitle, toggleEnvLock, me, handoffUsers, requestHandoffUsers, startHandoff, acceptHandoff, isHandoffRunning }
 }