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>

src/types.ts

@@ -143,14 +143,24 @@ export type BillingConfig = {
   balanceCents: number;
 };
 
+export type JsapiPayParams = {
+  appId: string;
+  timeStamp: string;
+  nonceStr: string;
+  package: string;
+  signType: 'MD5' | 'RSA';
+  paySign: string;
+};
+
 export type RechargeOrder = {
   id: string;
   amountCents: number;
   status: 'pending' | 'paid' | 'failed' | 'expired' | 'refunded';
-  payMode: 'native' | 'h5';
+  payMode: 'native' | 'h5' | 'jsapi';
   expireAt: number;
   codeUrl?: string | null;
   h5Url?: string | null;
+  jsapiParams?: JsapiPayParams | null;
 };
 
 export type InsufficientBalanceDetails = {