Fix debug logger fallback to cap total output bytes#1907
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Replace `cut -c1-$MAX_OUTPUT` with `head -c $MAX_OUTPUT` so the 200KB cap applies to the entire output stream instead of truncating each line independently, which could allow multi-line input to exceed the intended limit. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
cut -c1-$MAX_OUTPUTwithhead -c $MAX_OUTPUTin the debug prompt logger's jq-missing fallback pathcut -ctruncates each line independently, so multi-line input could exceed the 200KB caphead -ctruncates the total byte stream, correctly enforcing the intended limitAddresses review feedback on #1902.