* feat(usage): show upstream response model mismatches
Persist observed response models separately from routing and billing facts.
Surface mismatches with the existing model arrow and native title tooltips.
Keep response observations isolated across retries and WebSocket reuse.
Co-authored-by: Codex <noreply@openai.com>
* fix(usage): calculate costs from the outbound model
Co-authored-by: Codex <noreply@openai.com>
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Co-authored-by: Zyy <zyycn@users.noreply.github.com>
Co-authored-by: Codex <noreply@openai.com>
