[autofix] labs/flow-batch: SELECTOR

## Summary
OpenCLI autofix repaired this adapter locally, and the retry passed.

## Adapter
- Site: `labs`
- Command: `flow-batch`

## Original failure
- Error code: `SELECTOR`

~~~
Google Flow UI updated their generated images to be grouped in a `` component, and hides extra images behind an expand button.
~~~

## Local fix summary

~~~
Replaced `img[alt="生成的图片"]` with `flow-a2ui-image-option img`. Added logic to click the "Show more" (`展开`) button to reveal all generated images before extraction.
~~~

_Issue filed by OpenCLI autofix after a verified local repair._

Start at the labs/flow-batch adapter and inspect its image selector and extraction flow. Reproduce the Google Flow result with grouped flow-a2ui-image-option elements and the 展开 button, then run the flow-batch retry. Done means all generated images are extracted after hidden results are revealed.

Written by the indexing model from the issue text.