✨ feat(vscode): 问 AI 输入框能粘贴、拖进图片随问题发给 Claude Code，缩略图能点开看大图，图片存进 .spx/code-qa 跟着问答删

vscode/src/codeReader/folderStore.ts

@@ -1,7 +1,7 @@
 import type { FileDeleteEvent, FileRenameEvent, WorkspaceFolder } from 'vscode'
 import type { PathMap, PathMapFile } from './pathMap'
 import { Disposable, EventEmitter, RelativePattern, Uri, window, workspace } from 'vscode'
-import { changedKeys, dropEntries, entriesUnder, moveEntries, placeEntries, readPathMap, toPathKey, writePathMap } from './pathMap'
+import { changedKeys, detachedFiles, dropEntries, entriesUnder, moveEntries, placeEntries, readPathMap, removeFiles, toPathKey, writePathMap } from './pathMap'
 
 /** 一个文件 / 目录在哪个工作区文件夹里、键是什么。 */
 export interface PathLocation {
@@ -50,7 +50,10 @@ export class FolderStore<T> implements Disposable {
     return this.maps.get(folder.uri.toString())?.[key]
   }
 
-  /** 读盘上最新的一份改好再写回；没变就不写，所以第一条存下之前不会生成文件。 */
+  /**
+   * 读盘上最新的一份改好再写回；没变就不写，所以第一条存下之前不会生成文件。
+   * 写好后删掉不再有条目带着的文件（见 PathMapFile.attachments）：删一条、删源文件都跟着删。
+   */
   update(folder: WorkspaceFolder, change: (map: PathMap<T>) => PathMap<T>): Promise<void> {
     return this.enqueue(async () => {
       const before = await readPathMap(folder.uri.fsPath, this.file)
@@ -59,6 +62,7 @@ export class FolderStore<T> implements Disposable {
         return
       await writePathMap(folder.uri.fsPath, this.file, after)
       this.apply(folder, after)
+      await removeFiles(folder.uri.fsPath, detachedFiles(this.file, before, after))
     })
   }