fix: display finance records and ledgers in Beijing time

internal/store/time.go

@@ -6,3 +6,23 @@ package store
 func databaseWallTimeUTC(column string) string {
 	return `DATE_FORMAT(TIMESTAMPADD(SECOND,TIMESTAMPDIFF(SECOND,NOW(),UTC_TIMESTAMP()),` + column + `),'%Y-%m-%dT%H:%i:%sZ')`
 }
+
+// beijingWallTimeUTC handles DATETIME fields explicitly written by the admin
+// service, whose business clock is Asia/Shanghai, independently of the DB session.
+func beijingWallTimeUTC(column string) string {
+	return `DATE_FORMAT(TIMESTAMPADD(HOUR,-8,` + column + `),'%Y-%m-%dT%H:%i:%sZ')`
+}
+
+// walletLedgerTimeUTC preserves the UTC clock used by insertTaskLedger and
+// insertWithdrawalLedger; all other ledger writers use the admin's Beijing clock.
+// Legacy forced-payment entries share the task:...:match key with client entries,
+// so their writer-provided remarks must also distinguish those two sources.
+func walletLedgerTimeUTC() string {
+	return `CASE WHEN idempotency_key LIKE 'withdrawal:%'
+		OR idempotency_key REGEXP '^task:[0-9]+:(settle|expire):'
+		OR (idempotency_key REGEXP '^task:[0-9]+:match:(available|frozen)$' AND remark IN (
+			'自动派单扣除可用余额','自动派单冻结订单本金',
+			'会员确认手动订单扣除可用余额','会员确认手动订单冻结本金'))
+		THEN DATE_FORMAT(occurred_at,'%Y-%m-%dT%H:%i:%sZ')
+		ELSE ` + beijingWallTimeUTC("occurred_at") + ` END`
+}