✨ feat: harden subscription billing and improve UI consistency

Improve subscription payment safety and data integrity by handling user/URL lookup failures, fixing Stripe subscription mode, persisting quota reset fields, and correcting subscription delta accounting and DB timestamp casting. Refine the UI with stricter custom duration validation, accurate currency rounding, conditional Epay labeling, rollback on preference update failure, and shared subscription formatting helpers plus clearer component naming.

web/src/components/table/subscriptions/SubscriptionsColumnDefs.jsx

@@ -202,9 +202,10 @@ const renderResetPeriod = (text, record, t) => {
   );
 };
 
-const renderPaymentConfig = (text, record, t) => {
+const renderPaymentConfig = (text, record, t, enableEpay) => {
   const hasStripe = !!record?.plan?.stripe_price_id;
   const hasCreem = !!record?.plan?.creem_product_id;
+  const hasEpay = !!enableEpay;
 
   return (
     <Space spacing={4}>
@@ -218,9 +219,11 @@ const renderPaymentConfig = (text, record, t) => {
           Creem
         </Tag>
       )}
-      <Tag color='light-green' shape='circle'>
-        {t('易支付')}
-      </Tag>
+      {hasEpay && (
+        <Tag color='light-green' shape='circle'>
+          {t('易支付')}
+        </Tag>
+      )}
     </Space>
   );
 };
@@ -274,7 +277,12 @@ const renderOperations = (text, record, { openEdit, setPlanEnabled, t }) => {
   );
 };
 
-export const getSubscriptionsColumns = ({ t, openEdit, setPlanEnabled }) => {
+export const getSubscriptionsColumns = ({
+  t,
+  openEdit,
+  setPlanEnabled,
+  enableEpay,
+}) => {
   return [
     {
       title: 'ID',
@@ -324,7 +332,8 @@ export const getSubscriptionsColumns = ({ t, openEdit, setPlanEnabled }) => {
     {
       title: t('支付渠道'),
       width: 180,
-      render: (text, record) => renderPaymentConfig(text, record, t),
+      render: (text, record) =>
+        renderPaymentConfig(text, record, t, enableEpay),
     },
     {
       title: t('总额度'),