When AI generates AskUserQuestion tool calls with option labels longer
than 30 characters, opencode validation rejects them with "too_big" error.
This fix adds a pre-tool-use hook that automatically truncates labels
to 30 characters (with "..." suffix) before the validation occurs.
Fixes the error:
"The question tool was called with invalid arguments: expected string
to have <=30 characters"
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
3a22c24cf4