Files
ModelRouter/internal
valuelesser 6f1c806591 fix(gateway): emit OpenAI-standard token usage in responses
- TokenUsage.MarshalJSON now emits both standard (prompt_tokens,
  completion_tokens, total_tokens) and legacy (prompt, completion, total)
  keys, so OpenAI-compatible clients (DSH, DevEco Code, etc.) can read
  token usage.
- ChatChunk gains an optional Usage field; stream responses now send a
  final usage chunk (empty choices) before [DONE].

Refs: usage not visible in clients because the gateway serialized only the
internal short keys and never emitted a streaming usage chunk.
2026-08-18 18:14:37 +08:00
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