Add auction pricing for all pricing models#269

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EmmaLouise2018 wants to merge 3 commits intomainfrom

auction-all-pricing

Commits on Dec 4, 2025

Add auction pricing for all pricing models
EmmaLouise2018
committed

Commits on Dec 9, 2025

Refactor: Consolidate pricing schemas into single discriminated union
EmmaLouise2018
committed

Commits on Dec 16, 2025

Refactor: One schema per pricing model with fixed+auction support
EmmaLouise2018
committed