✨ feat(vscode): 实施和审查会话行加启动箭头

不用再把卡片拖到「实施中」「审查」列：

- 实施会话id 行在有计划文件且没实施会话时显示 ▶，等同拖进实施中列
- 审查会话id 行在有 PR 时显示 ▶，按 PR 事件那套流程起 codex 审查

Claude-Session: https://claude.ai/code/session_01Kgmb1LvrPmFX3NoUDB4zZC

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

@@ -187,6 +187,7 @@ export interface UseIssuesResult {
   /** 该会话 id 的开 tab 请求还没被扩展处理完 → 行内转 spinner。 */
   isSessionTabPending: (sessionId: string) => boolean
   resumeReviewSession: (sessionId: string, issueNumber: number, cwd?: string) => void
+  startReviewSession: (issueNumber: number) => void
   startTestSession: (issueNumber: number) => void
   resumeTestSession: (sessionId: string, issueNumber: number, cwd?: string) => void
   focusSession: (issueNumber: number) => void
@@ -545,6 +546,10 @@ export function useIssues(): UseIssuesResult {
     postMessage({ type: 'session/resume-review', sessionId, issueNumber, cwd })
   }, [markSessionTabPending])
 
+  const startReviewSession = useCallback((issueNumber: number): void => {
+    postMessage({ type: 'session/start-review', issueNumber })
+  }, [])
+
   const startTestSession = useCallback((issueNumber: number): void => {
     postMessage({ type: 'session/start-test', issueNumber })
   }, [])
@@ -990,5 +995,5 @@ export function useIssues(): UseIssuesResult {
     return cleanup
   }, [clearPrDiffSummaryRunning, markHandoffRunning])
 
-  return { state, settings, avatars, isSessionTabPending, globalAutoReview, youtrackConfigured, importYouTrack, toasts, profiles, setIssues, refresh, refreshing, 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, continueBrainstorm, changeColumn, setDependency, clearDependency, updateIssueAutoReview, updateIssueProfilePath, updateIssueBrainstormProfilePath, clearBrainstormSession, updateIssueTestProfilePath, logs, fetchLogs, clearLogs, pendingSelectId, clearPendingSelect, commitRunning, runCommit, hasChanges, release, runRelease, cherryPick, dismissCherryPick, confirmCherryPick, envLocked, envFileCount, envLockRunning, envLockTitle, toggleEnvLock, me, handoffUsers, requestHandoffUsers, startHandoff, acceptHandoff, isHandoffRunning }
+  return { state, settings, avatars, isSessionTabPending, globalAutoReview, youtrackConfigured, importYouTrack, toasts, profiles, setIssues, refresh, refreshing, scope, toggleScope, saveSettings, listYouTrackProjects, youtrackProjects, dismissSettings, requestEditAuth, createIssue, dismissToast, openUrl, resumeSession, resumeReviewSession, startReviewSession, startTestSession, resumeTestSession, focusSession, openFile, implement, generatePrDiffSummary, isPrDiffSummaryRunning, openPr, openWorktree, deleteWorktree, mergeBranch, deleteIssue, closeIssue, closeSessionTab, continueBrainstorm, changeColumn, setDependency, clearDependency, updateIssueAutoReview, updateIssueProfilePath, updateIssueBrainstormProfilePath, clearBrainstormSession, updateIssueTestProfilePath, logs, fetchLogs, clearLogs, pendingSelectId, clearPendingSelect, commitRunning, runCommit, hasChanges, release, runRelease, cherryPick, dismissCherryPick, confirmCherryPick, envLocked, envFileCount, envLockRunning, envLockTitle, toggleEnvLock, me, handoffUsers, requestHandoffUsers, startHandoff, acceptHandoff, isHandoffRunning }
 }