When a user selects "Other" in AskUserQuestion with no text body, the
answer_validation block was treating the empty result as a generic empty
response and retrying the question — causing 2-3 cascading question rounds
instead of pausing for freeform user input as intended by the Other handling
on line 795.
Add an explicit exception in answer_validation: "Other" + empty text signals
freeform intent, not a missing answer. The workflow must output one prompt line
and stop rather than retry or generate more questions.
Fixes#2085
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
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