feat: publish sanitized custom.97 source

pkg/billingexpr/types.go

@@ -72,6 +72,7 @@ type BillingSnapshot struct {
 	GroupRatio                float64        `json:"group_ratio"`
 	EstimatedPromptTokens     int            `json:"estimated_prompt_tokens"`
 	EstimatedCompletionTokens int            `json:"estimated_completion_tokens"`
+	PreConsumeMultiplier      float64        `json:"pre_consume_multiplier,omitempty"` // Reservation only; zero in older snapshots means 1.
 	EstimatedQuotaBeforeGroup float64        `json:"estimated_quota_before_group"`
 	EstimatedQuotaAfterGroup  int            `json:"estimated_quota_after_group"`
 	EstimatedTier             string         `json:"estimated_tier"`