Add comprehensive i18n localization to transaction UI components

- Localize 23 transaction UI component files
- Add 150+ translation keys to ko.json and en.json
- Organized translations under transaction namespace:
  * transaction.bottomSheet - Bottom sheet modals
  * transaction.sections - Section titles
  * transaction.fields - Field labels (90+ keys)
  * transaction.cancel - Cancellation flows
  * transaction.handWrittenIssuance - Manual issuance forms
  * transaction.list - List actions

Updated files:
- Bottom sheets: escrow-mail-resend, cash-receipt-purpose-update
- Sections: billing-info, part-cancel-info, detail-info, issue-info,
  escrow-info, important-info, payment-info, transaction-info,
  settlement-info, merchant-info, amount-info, cancel-bank-group,
  cancel-password-group
- Lists: list-item, billing-list, cash-receipt-list
- Cancel flows: all-cancel, part-cancel, prevent-bond
- Issuance: hand-written-issuance-step1, hand-written-issuance-step2

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/entities/transaction/ui/section/billing-info-section.tsx

@@ -1,32 +1,34 @@
 import moment from 'moment';
 import { InfoSectionProps } from '../../model/types';
+import { useTranslation } from 'react-i18next';
 
 export const BillingInfoSection = ({
   billingInfo,
 }: InfoSectionProps) => {
+  const { t } = useTranslation();
 
   const getInstallmentMonth = () => {
     let rs = [];
     if((!!billingInfo?.installmentMonth && parseInt(billingInfo?.installmentMonth) > 1)){
       rs.push(
-        <li 
+        <li
           key={ `key-installmentMonth`}
           className="kv-row"
         >
-          <span className="k">할부개월</span>
-          <span className="v">{ billingInfo?.installmentMonth }개월 할부</span>
-        </li> 
+          <span className="k">{ t('transaction.fields.installmentMonth') }</span>
+          <span className="v">{ t('transaction.fields.installmentMonthly', { count: billingInfo?.installmentMonth }) }</span>
+        </li>
       );
     }
     else{
       rs.push(
-        <li 
+        <li
           key={ `key-installmentMonth`}
           className="kv-row"
         >
-          <span className="k">할부개월</span>
-          <span className="v">일시불</span>
-        </li> 
+          <span className="k">{ t('transaction.fields.installmentMonth') }</span>
+          <span className="v">{ t('transaction.fields.lumpSum') }</span>
+        </li>
       );
     }
     return rs;
@@ -34,43 +36,43 @@ export const BillingInfoSection = ({
   return (
     <>
       <div className="txn-section">
-        <div className="section-title">중요 정보</div>
+        <div className="section-title">{ t('transaction.sections.importantInfo') }</div>
         <ul className="kv-list">
           <li className="kv-row">
-            <span className="k">빌키</span>
+            <span className="k">{ t('transaction.fields.billKey') }</span>
             <span className="v">{ billingInfo?.billKey }</span>
           </li>
           <li className="kv-row">
-            <span className="k">TID</span>
+            <span className="k">{ t('transaction.fields.tid') }</span>
             <span className="v">{ billingInfo?.tid }</span>
           </li>
           <li className="kv-row">
-            <span className="k">주분번호</span>
+            <span className="k">{ t('transaction.fields.orderNumber') }</span>
             <span className="v">{ billingInfo?.orderNumber }</span>
           </li>
           <li className="kv-row">
-            <span className="k">승인번호</span>
+            <span className="k">{ t('transaction.fields.approvalNumber') }</span>
             <span className="v">{ billingInfo?.approvalNumber }</span>
           </li>
           <li className="kv-row">
-            <span className="k">승인일자</span>
+            <span className="k">{ t('transaction.fields.approvalDate') }</span>
             <span className="v">{ moment(billingInfo?.approvalDate).format('YYYY.MM.DD') }</span>
           </li>
           <li className="kv-row">
-            <span className="k">요청상태</span>
+            <span className="k">{ t('transaction.fields.requestStatus') }</span>
             <span className="v">{ billingInfo?.requestStatus }</span>
           </li>
           <li className="kv-row">
-            <span className="k">처리결과</span>
+            <span className="k">{ t('transaction.fields.processResult') }</span>
             <span className="v">{ billingInfo?.processResult }</span>
           </li>
           { getInstallmentMonth() }
           <li className="kv-row">
-            <span className="k">상품명</span>
+            <span className="k">{ t('transaction.fields.productName') }</span>
             <span className="v">{ billingInfo?.productName }</span>
           </li>
           <li className="kv-row">
-            <span className="k">구매자</span>
+            <span className="k">{ t('transaction.fields.buyer') }</span>
             <span className="v">{ billingInfo?.buyerName }</span>
           </li>
         </ul>