✨ 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/components/BottomTabs.tsx

@@ -31,6 +31,7 @@ interface BottomTabsProps {
   onResumeSession: (sessionId: string, kind: 'implement' | 'brainstorm', profilePath?: string, cwd?: string, issueNumber?: number) => void
   isSessionTabPending: (sessionId: string) => boolean
   onResumeReviewSession: (sessionId: string, issueNumber: number, cwd?: string) => void
+  onStartReviewSession: (issueNumber: number) => void
   onStartTestSession: (issueNumber: number) => void
   onResumeTestSession: (sessionId: string, issueNumber: number, cwd?: string) => void
   onOpenFile: (path: string) => void
@@ -130,6 +131,7 @@ export function BottomTabs(props: BottomTabsProps) {
             onResumeSession={props.onResumeSession}
             isSessionTabPending={props.isSessionTabPending}
             onResumeReviewSession={props.onResumeReviewSession}
+            onStartReviewSession={props.onStartReviewSession}
             onStartTestSession={props.onStartTestSession}
             onResumeTestSession={props.onResumeTestSession}
             onOpenFile={props.onOpenFile}