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Thomas Kosiewski
26b64fa523
`chat_turn` debug steps persist with `attempts: []` even when the streaming call to Anthropic completes successfully. Fantasy's Anthropic SSE adapter iterates the response to EOF via `for stream.Next()` and abandons the body without calling `Close()`, so `RecordingTransport`'s Close-only recording path never fires and the attempt is lost. Non-streaming runs (`quickgen`, `title_generation`) go through `model.Generate(...)` and are unaffected. Record on `io.EOF` for `text/event-stream` bodies specifically. Non-SSE responses stay on the Close-only path so JSON integrity, content-length validation, and inner-`Close()` error semantics are preserved. `record()` is already `sync.Once`-guarded, so a later `Close()` is a no-op for recording.