fix(payment): remove cid param from EasyPay redirect payments

backend/cmd/server/VERSION

@@ -1 +1 @@
-0.1.108.74
+0.1.108.75

backend/internal/payment/provider/easypay.go

@@ -77,9 +77,6 @@ func (e *EasyPay) createRedirectPayment(req payment.CreatePaymentRequest) (*paym
 		"return_url": returnURL, "name": req.Subject,
 		"money": req.Amount,
 	}
-	if cid := e.resolveAllCIDs(); cid != "" {
-		params["cid"] = cid
-	}
 	params["sign"] = easyPaySign(params, e.config["pkey"])
 	params["sign_type"] = "MD5"
 
@@ -229,32 +226,6 @@ func (e *EasyPay) resolveCID(paymentType string) string {
 	return e.config["cid"]
 }
 
-// resolveAllCIDs collects all configured CIDs (general, alipay, wxpay) and
-// returns them as a comma-separated string for the redirect payment page,
-// allowing the user to choose among all available channels.
-func (e *EasyPay) resolveAllCIDs() string {
-	seen := make(map[string]struct{})
-	var cids []string
-	for _, key := range []string{"cidAlipay", "cidWxpay"} {
-		v := e.config[key]
-		if v == "" {
-			continue
-		}
-		for _, c := range strings.Split(v, ",") {
-			c = strings.TrimSpace(c)
-			if c == "" {
-				continue
-			}
-			if _, ok := seen[c]; ok {
-				continue
-			}
-			seen[c] = struct{}{}
-			cids = append(cids, c)
-		}
-	}
-	return strings.Join(cids, ",")
-}
-
 func (e *EasyPay) post(ctx context.Context, endpoint string, params map[string]string) ([]byte, error) {
 	form := url.Values{}
 	for k, v := range params {