Add WeChat in-app JSAPI recharge for g2.tkmind.cn.

Use JSAPI with bound openid inside WeChat instead of QR long-press, and include related auth redirect and admin UX fixes.

Co-authored-by: Cursor <cursoragent@cursor.com>

db.mjs

@@ -250,6 +250,11 @@ export async function migrateSchema(pool) {
       KEY idx_wechat_pending_expires (expires_at)
     ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
   `);
+
+  await pool.query(
+    `ALTER TABLE h5_payment_orders
+     MODIFY pay_mode ENUM('native', 'h5', 'jsapi') NOT NULL DEFAULT 'native'`,
+  );
 }
 
 export async function initSchema(pool) {