fix: make refund migration compatible with legacy schemas

Co-authored-by: multica-agent <github@multica.ai>

initialize/migrate/database/02150_refund_pending_withdrawals.down.sql

@@ -14,6 +14,6 @@ SET u.commission = u.commission - p.pending_total
 WHERE p.pending_total > 0;
 
 -- Remove the migration log entries written by the up migration.
-DELETE FROM system_log
+DELETE FROM system_logs
-WHERE type = 3
+WHERE type = 33
   AND content LIKE '%migration: refund pending withdrawal commission (HIF-22)%';

initialize/migrate/database/02150_refund_pending_withdrawals.up.sql

@@ -11,6 +11,26 @@
 -- Running this script multiple times is safe only if no new pending
 -- withdrawals are created between runs; deploy new code immediately after.
 
+-- Compatibility: some historical databases missed migration 02122, so the
+-- withdrawals table may not exist yet. Create it idempotently before the
+-- refund logic so this migration can self-heal older installations.
+CREATE TABLE IF NOT EXISTS `withdrawals` (
+    `id` BIGINT NOT NULL AUTO_INCREMENT COMMENT 'Primary Key',
+    `user_id` BIGINT NOT NULL COMMENT 'User ID',
+    `amount` BIGINT NOT NULL COMMENT 'Withdrawal Amount',
+    `content` TEXT COMMENT 'Withdrawal Content',
+    `status` TINYINT(1) NOT NULL DEFAULT 0 COMMENT 'Withdrawal Status',
+    `reason` VARCHAR(500) NOT NULL DEFAULT '' COMMENT 'Rejection Reason',
+    `created_at` DATETIME NOT NULL COMMENT 'Creation Time',
+    `updated_at` DATETIME NOT NULL COMMENT 'Update Time',
+    PRIMARY KEY (`id`),
+    KEY `idx_user_id` (`user_id`)
+    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+INSERT IGNORE INTO `system` (`category`, `key`, `value`, `type`, `desc`, `created_at`, `updated_at`)
+VALUES
+    ('invite', 'WithdrawalMethod', '', 'string', 'withdrawal method', '2025-04-22 14:25:16.637', '2025-04-22 14:25:16.637');
+
 -- Step 1: refund commission for all users with pending withdrawals.
 UPDATE `user` u
 JOIN (
@@ -23,9 +43,9 @@ SET u.commission = u.commission + p.pending_total
 WHERE p.pending_total > 0;
 
 -- Step 2: write a migration log entry for each refunded user.
-INSERT INTO system_log (type, date, object_id, content, created_at)
+INSERT INTO system_logs (type, date, object_id, content, created_at)
 SELECT
-    3 AS type,
+    33 AS type,
     DATE(NOW()) AS date,
     p.user_id AS object_id,
     JSON_OBJECT(