✨ 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/pathMap.ts

@@ -16,6 +16,8 @@ export interface PathMapFile<T> {
   label: string
   /** 认一条的值：不合法的返回 undefined，这条就跳过；合法的可以顺手规范成统一写法 */
   parse: (value: unknown) => T | undefined
+  /** 一条值带着的文件（相对工作区文件夹，`/` 分隔，例如问答的图片）：改表后不再有哪条带着的，跟着删掉 */
+  attachments?: (value: T) => string[]
 }
 
 /** 规范成表的键：去掉 `./`、重复和结尾的 `/`；工作区文件夹本身、文件夹外面的路径没有键。 */
@@ -62,7 +64,7 @@ export function changedKeys<T>(before: PathMap<T>, after: PathMap<T>): string[]
   return [...keys].filter(key => JSON.stringify(before[key]) !== JSON.stringify(after[key]))
 }
 
-function fileIn(workspaceRoot: string, file: PathMapFile<unknown>): string {
+function fileIn<T>(workspaceRoot: string, file: PathMapFile<T>): string {
   return path.join(workspaceRoot, ...file.path.split('/'))
 }
 
@@ -100,3 +102,20 @@ export async function writePathMap<T>(workspaceRoot: string, file: PathMapFile<T
   const sorted = Object.fromEntries(Object.entries(map).sort(([a], [b]) => a < b ? -1 : a > b ? 1 : 0))
   await fsp.writeFile(target, `${JSON.stringify(sorted, null, 2)}\n`, 'utf8')
 }
+
+/** 改表前带着、改表后没有哪条再带着的文件（见 PathMapFile.attachments）。 */
+export function detachedFiles<T>(file: PathMapFile<T>, before: PathMap<T>, after: PathMap<T>): string[] {
+  const { attachments } = file
+  if (!attachments)
+    return []
+  const kept = new Set(Object.values(after).flatMap(attachments))
+  return [...new Set(Object.values(before).flatMap(attachments))].filter(attachment => !kept.has(attachment))
+}
+
+/** 删掉工作区文件夹里的这些文件（相对路径）；已经没了的不算错，跑到文件夹外面的路径不碰。 */
+export async function removeFiles(workspaceRoot: string, relativePaths: readonly string[]): Promise<void> {
+  await Promise.all(relativePaths.flatMap((relativePath) => {
+    const key = normalizeKey(relativePath)
+    return key === undefined ? [] : [fsp.rm(path.join(workspaceRoot, ...key.split('/')), { force: true })]
+  }))
+}