🐛 fix(vscode): 移交终审修正：schema 墓碑、顶层兜底、前置复查、分支保护、清单校验

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

vscode/src/panel/handlers/handoff.ts

@@ -59,7 +59,7 @@ export function handoffLocalTombstones(opts: { keepWorktreePath: boolean }): Rec
   return extra
 }
 
-export function handoffStartedUiPatch(attachmentId: number, from: string, to: string): Record<string, unknown> {
+export function handoffStartedUiPatch(attachmentId: number, from: string, to: string, opts: { keepWorktreePath: boolean }): Record<string, unknown> {
   return {
     handoffAttachmentId: String(attachmentId),
     handoffFrom: from,
@@ -68,8 +68,12 @@ export function handoffStartedUiPatch(attachmentId: number, from: string, to: st
     implementSessionId: null,
     reviewSessionId: null,
     testSessionId: null,
-    worktreePath: null,
-    worktreeExists: false,
+    profilePath: null,
+    brainstormProfilePath: null,
+    testProfilePath: null,
+    prDiffFile: null,
+    // worktree 没删掉时（opts.keepWorktreePath）不碰这两个字段，让 UI 继续显示孤儿 worktree。
+    ...(opts.keepWorktreePath ? {} : { worktreePath: null, worktreeExists: false }),
   }
 }