✨ 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/cc/spawnClaude.test.ts

@@ -29,6 +29,16 @@ describe('跑 claude、逐行交出 stdout', () => {
     expect(lines).toEqual(['{"a":1}', '{"b":2}', await fsp.realpath(dir), '-p|带 空格 的问题|'])
   })
 
+  it('给了 input 就写进 stdin 再关上（stream-json 的消息）；不给时 stdin 是空的，读 stdin 的也不会卡住', async () => {
+    const bin = await fakeBin('cat; echo end')
+    const withInput: string[] = []
+    await runClaudeLines({ bin, args: [], cwd: dir, input: '{"type":"user"}\n', onLine: item => withInput.push(item) })
+    expect(withInput).toEqual(['{"type":"user"}', 'end'])
+    const without: string[] = []
+    await runClaudeLines({ bin, args: [], cwd: dir, timeoutMs: 2000, onLine: item => without.push(item) })
+    expect(without).toEqual(['end'])
+  })
+
   it('退出码非零：带上 stderr 的原话', async () => {
     const bin = await fakeBin('echo "No conversation found with session ID: x" >&2; exit 1')
     const error = await runClaudeLines({ bin, args: [], cwd: dir, onLine: () => {} }).catch((err: unknown) => err)

vscode/src/cc/spawnClaude.ts

@@ -222,7 +222,8 @@ function createProgressFeeder(onProgress?: ClaudeProgressListener): (chunk: stri
   }).feed
 }
 
-function buildStreamJsonLine(prompt: string, images: ClaudeImage[]): string {
+/** `--input-format stream-json` 的一条用户消息（一行 NDJSON）：先是文字，后面跟着各张图片。 */
+export function buildStreamJsonLine(prompt: string, images: readonly ClaudeImage[]): string {
   const content: Array<Record<string, unknown>> = [
     { type: 'text', text: prompt },
   ]
@@ -566,6 +567,8 @@ function spawnClaudeStreamed(
 export function runClaudeLines(opts: {
   args: string[]
   cwd: string
+  /** 写进 stdin 后关上（`--input-format stream-json` 的消息，见 buildStreamJsonLine）；不给时 stdin 是空的 */
+  input?: string
   onLine: (line: string) => void
   timeoutMs?: number
   signal?: AbortSignal
@@ -589,8 +592,11 @@ export function runClaudeLines(opts: {
     const child = spawn(bin, opts.args, {
       cwd: opts.cwd,
       env: buildClaudeChildEnv(bin),
-      stdio: ['ignore', 'pipe', 'pipe'],
+      stdio: ['pipe', 'pipe', 'pipe'],
     })
+    // 进程先退了（参数不对）时写不进去：真正的原因由退出码和 stderr 报
+    child.stdin.on('error', () => {})
+    child.stdin.end(opts.input ?? '')
 
     const timer = setTimeout(() => {
       child.kill('SIGKILL')