🐛 fix(vscode): 切走标签再回来，调用树棵数不用重算，开着的弹框和选中的入口照旧

vscode/src/codeReader/editor/previewEditor.ts

@@ -185,7 +185,7 @@ class Preview {
   visibleLine: number | undefined
   /** 最近一次发出去的文档（版本、块树、源码）：问 AI 时按块的记号在里面找那块代码，对比基准变了时拿它重新比 */
   private sent: SentDocument | undefined
-  /** 能看调用树的块（函数、类、接口卡片）落在几棵调用树里。文档发出去之后再数，不挡住第一次预览 */
+  /** 能看调用树的块（函数、类、接口卡片）落在几棵调用树里。文档发出去之后再数，不挡住第一次预览；同一版文档数过的页面重新加载后接着用 */
   private readonly callTrees = new CallTreeSession(
     message => this.post(message),
     () => {
@@ -358,7 +358,6 @@ class Preview {
     if (!this.ready)
       return
     const request = ++this.latest
-    this.callTrees.cancel()
     // 路径页、功能对话页：文档是空的，只在顶部聊天
     if (this.document.uri.scheme === PATH_PREVIEW_SCHEME) {
       this.sent = undefined
@@ -401,7 +400,7 @@ class Preview {
       this.names.resolve(version, report => resolveNames(displayNames, message.blocks, this.nameSources(), report))
       this.lookups.resolve(version, session.requests(), this.lookupSources())
       this.callees.resolve(version, callees.requests(), offset => this.calleeKind(offset))
-      this.callTrees.refresh()
+      this.callTrees.documentSent()
     }
   }