From 48b7f4918f532c7db3b7c9814802d538d01b0996 Mon Sep 17 00:00:00 2001
From: CaIon <i@caion.me>
Date: Tue, 7 Jul 2026 13:11:55 +0800
Subject: [PATCH] fix(billing): adjust quota calculation to prevent exceeding
 int32 limits

---
 service/text_quota.go | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/service/text_quota.go b/service/text_quota.go
index 0d452fba..4f6e4c11 100644
--- a/service/text_quota.go
+++ b/service/text_quota.go
@@ -165,9 +165,14 @@ func composeTieredTextQuota(relayInfo *relaycommon.RelayInfo, summary textQuotaS
 		}
 	}
 
-	surcharge, clamp := common.QuotaFromDecimalChecked(summary.ToolCallSurchargeQuota)
+	// Saturate the final sum, not just the surcharge: tieredQuota can be near
+	// MaxQuota and adding the surcharge could push the total past the int32
+	// quota policy bound (persisted quota columns are 32-bit).
+	total, clamp := common.QuotaFromDecimalChecked(
+		decimal.NewFromInt(int64(tieredQuota)).Add(summary.ToolCallSurchargeQuota),
+	)
 	noteQuotaClamp(relayInfo, clamp)
-	return tieredQuota + surcharge
+	return total
 }
 
 func calculateTextQuotaSummary(ctx *gin.Context, relayInfo *relaycommon.RelayInfo, usage *dto.Usage) textQuotaSummary {