修复微信扫码区服识别

backend/migrations/000051_fix_external_wechat_server_region.sql

@@ -0,0 +1,21 @@
+-- +goose Up
+
+-- 修正历史外部上传中以 VX/WX 表示微信扫码、但被默认归类为 QQ 的账号。
+UPDATE game_accounts AS a
+JOIN rental_listings AS l ON l.account_id = a.id
+SET a.server_region = '微信'
+WHERE a.server_region = 'QQ'
+  AND EXISTS (
+    SELECT 1
+    FROM listing_uploads AS lu
+    WHERE lu.listing_id = l.id
+  )
+  AND (
+    a.login_platform LIKE '%微信%'
+    OR LOWER(TRIM(a.login_platform)) LIKE 'vx%'
+    OR LOWER(TRIM(a.login_platform)) LIKE 'wx%'
+  );
+
+-- +goose Down
+
+-- 此数据修复不可逆，避免将已修正的微信账号错误回退为 QQ。