fix payment qr fallback and admin guidance

frontend/src/i18n/locales/en.ts

@@ -4741,6 +4741,8 @@ export default {
         field_certSerial: 'Certificate Serial',
         field_h5AppName: 'H5 App Name',
         field_h5AppUrl: 'H5 App URL',
+        wxpayConfigHint: 'WeChat Pay usually only needs App ID. Fill MP App ID, H5 App Name, and H5 App URL only when your Official Account or H5 flow specifically requires them.',
+        wxpayAdvancedOptions: 'WeChat Pay Advanced Options',
         field_secretKey: 'Secret Key',
         field_publishableKey: 'Publishable Key',
         field_webhookSecret: 'Webhook Secret',
@@ -4771,6 +4773,37 @@ export default {
         providerKey: 'Provider Type',
         selectProviderKey: 'Select Provider Type',
         providerConfig: 'Credentials',
+        paymentGuideTrigger: 'View payment guide',
+        guideOpenLabel: 'Enable: ',
+        guideCallLabel: 'Call: ',
+        guideFallbackLabel: 'Fallback: ',
+        alipayGuideSummary: 'Desktop prefers QR precreate and falls back to cashier; mobile prefers WAP checkout.',
+        alipayGuideFaceToFaceTitle: 'Face-to-face / QR Payment',
+        alipayGuideFaceToFaceOpen: 'Enable face-to-face or QR payment capability.',
+        alipayGuideFaceToFaceCall: 'Desktop orders call alipay.trade.precreate first and render the QR code directly.',
+        alipayGuideFaceToFaceFallback: 'If unavailable or failed, the flow falls back to website checkout automatically.',
+        alipayGuidePagePayTitle: 'Website Payment',
+        alipayGuidePagePayOpen: 'Enable website payment.',
+        alipayGuidePagePayCall: 'When face-to-face is unavailable on desktop, the flow calls alipay.trade.page.pay and still renders the returned link as a QR code.',
+        alipayGuidePagePayFallback: 'The cashier link stays available so users can reopen the checkout page manually.',
+        alipayGuideWapTitle: 'WAP Payment',
+        alipayGuideWapOpen: 'Enable mobile website payment.',
+        alipayGuideWapCall: 'Mobile orders call alipay.trade.wap.pay first and jump to Alipay checkout.',
+        alipayGuideWapFallback: 'If mobile payment is unavailable or fails, the frontend switches to QR payment and shows a notice.',
+        wxpayGuideSummary: 'Desktop prefers Native QR; mobile routes to JSAPI or H5 based on browser context.',
+        wxpayGuideNote: 'The current form defaults to one shared App ID, which fits the common single-subject web, mobile, and Official Account setup.',
+        wxpayGuideNativeTitle: 'Native / QR Payment',
+        wxpayGuideNativeOpen: 'Enable Native or QR payment capability.',
+        wxpayGuideNativeCall: 'Desktop orders use Native by default and the frontend renders the QR payload.',
+        wxpayGuideNativeFallback: 'Mobile flows also fall back here when JSAPI or H5 cannot be used.',
+        wxpayGuideJsapiTitle: 'JSAPI / Official Account',
+        wxpayGuideJsapiOpen: 'Enable Official Account payment and ensure the browser is inside WeChat with an available OpenID.',
+        wxpayGuideJsapiCall: 'Inside WeChat, the app calls JSAPI after authorization and launches WeChat Pay directly.',
+        wxpayGuideJsapiFallback: 'If configuration is missing, the bridge is unavailable, or launch fails, the flow falls back to QR payment.',
+        wxpayGuideH5Title: 'H5 Payment',
+        wxpayGuideH5Open: 'Enable H5 payment.',
+        wxpayGuideH5Call: 'On mobile browsers outside WeChat, the app calls H5 payment when a client IP is available.',
+        wxpayGuideH5Fallback: 'If H5 is unavailable or order creation fails, the flow falls back to QR payment.',
         noProviders: 'No provider instances configured',
         supportedTypes: 'Supported Payment Types',
         supportedTypesHint: 'Comma-separated, e.g. alipay,wxpay',
@@ -5627,6 +5660,7 @@ export default {
       wechatOpenInWeChatHint: 'Open the current page inside WeChat, or switch to desktop WeChat QR payment.',
       wechatScanOnDesktopHint: 'On desktop, use WeChat Scan to pay; on mobile, reopen the current page inside WeChat.',
       wechatSwitchBrowserHint: 'Switch to desktop WeChat QR payment, or reopen this page in an external browser and retry.',
+      mobilePaymentFallbackToQr: 'This merchant has not enabled mobile payment. The flow has been switched to QR payment automatically.',
       alipayDesktopUnavailable: 'The desktop Alipay flow could not generate a QR code.',
       alipayDesktopQrHint: 'Desktop Alipay should render a QR code. Refresh and retry, or make sure the payment page was not blocked.',
       alipayMobileUnavailable: 'This page could not hand off to Alipay.',