0220df8429
Pre-fill BillingRequestInput from dto.Request before ModelPriceHelper, so tiered_expr billing resolves param() from the structured request instead of reading HTTP body (which is empty in channel-test context). - attachTestBillingRequestInput: marshal dto.Request → RequestInput - ResolveIncomingBillingExprRequestInput: early-return when pre-filled - settleTestQuota / buildTestLogOther: align test settlement & logging with production TryTieredSettle / InjectTieredBillingInfo paths