Files
sub2api/backend/internal
akihitohyhandClaude Opus 5 243921dc0a fix(openai): rebuild streaming terminal output from the reported items
A terminal event that arrives with an empty output was rebuilt from delta
accumulation. BufferedResponseAccumulator models only one reasoning item, one
message, and N function calls, and records no item id, status, or phase, so a
turn carrying several items collapsed into a single fabricated message: the
reasoning item disappeared, the real message id was replaced, and phase was
lost.

reconstructResponseOutputFromSSE already prefers the raw output_item.done
items over accumulation for buffered responses. The streaming path had no
equivalent because it never sees the whole body at once. Collect the raw item
of each output_item.done keyed by output_index and rebuild from those, falling
back to accumulation only when the stream reported no done item at all.

Items are stored as raw JSON, so vendor extensions and item types this gateway
does not model survive the rebuild verbatim.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-23 20:49:36 +08:00
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