Root cause: Codex/OpenAI Responses streams multiple alternating reasoning and
message output items. The first message block often has empty output_text; the
visible answer lives in a later message. Previous code used output.find() which
always picked the first (empty) message block.
Fix: walk message items from end and use the last message whose extracted text
is non-empty; fall back to final message if all are empty.
Note: Removed debug logging code from original PR #383 to keep implementation clean.
Co-authored-by: lokinh <locnh@uniultra.xyz>
Made-with: Cursor
