Luis Pater e0b4956242 fix(openai): ensure Responses usage includes token detail fields ...

- add shared `EnsureResponsesUsageDetails` helper to patch `usage` objects with:
  - `output_tokens_details.reasoning_tokens = 0`
  - `input_tokens_details.cached_tokens = 0`
  - for both plain JSON and SSE `data:` frames, including multi-line frames
- apply the helper to OpenAI Response format outputs in non-stream and stream paths across executors/plugins so translated payloads consistently include required usage details
- update websocket/completion payload builders to emit default `usage` detail fields for prewarm/finish responses

Closes: #4985

2026-08-15 15:00:19 +08:00

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executor

fix(openai): ensure Responses usage includes token detail fields

2026-08-15 15:00:19 +08:00