fix(server): price Daybreak usage aliases

[obinnanwachukwu1]

Problem

Codex records Daybreak models in rollout transcripts as gpt-daybreak-blue-latest and gpt-daybreak-red-latest, while LiteLLM publishes their pricing under daybreak-blue-latest and daybreak-red-latest.

Because Usage performed an exact normalized rate lookup, Daybreak tokens were included in token totals but marked unpriced and contributed $0.00 to the API-equivalent cost.

Closes #7752

Fix

Add a small alias fallback at the LiteLLM pricing boundary.

Exact rate-table matches still take precedence, so a future native LiteLLM entry for a Codex slug automatically overrides the fallback. Codex model selection and stored transcript identifiers remain unchanged.

Because Usage calculates pricing when it reads transcripts, this prices existing Daybreak history without a migration.

Verification

• vp test run apps/server/src/usage/usagePricing.test.ts apps/server/src/usage/usageAggregation.test.ts
• vp lint apps/server/src/usage/usagePricing.ts apps/server/src/usage/usagePricing.test.ts
• vp run --filter t3 typecheck
• Verified in the Usage page with the same 24-hour Daybreak history before and after the change

Built with GPT-5.6 Sol using Codex in T3 Code.

---

Note

Low Risk
Narrow pricing-lookup change with tests; it only remaps two model names at cost calculation time and does not touch auth, billing charges, or stored transcripts.

Overview
Fixes Daybreak usage showing as unpriced ($0.00) because Codex transcripts use gpt-daybreak-*-latest while LiteLLM publishes rates as daybreak-*-latest.

lookupRate now falls back to a small alias map after an exact table match. Exact LiteLLM keys still win, and stored model names are unchanged. Existing Daybreak history is priced on read without a migration.

^{Reviewed by Cursor Bugbot for commit b0a9f50. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Add Daybreak usage aliases to lookupRate in usagePricing

Introduces a LITELLM_RATE_ALIASES mapping so gpt-daybreak-blue-latest and gpt-daybreak-red-latest resolve to daybreak-blue-latest and daybreak-red-latest pricing entries. lookupRate first does a direct table lookup, then falls back to the alias mapping; exact table matches always win over aliases. Adds test coverage for alias resolution, exact-match preference, and unknown-model handling.

^{Macroscope summarized b0a9f50.}

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