Add comprehensive i18n localization to settlement entity

- Convert settlement constants to i18n-compatible getter functions
- Add 28+ translation keys to settlement namespace
- Localize 11 settlement UI components

Constant conversions:
- getSettlementPeriodTypeBtnGroup(t)
- getSettlementPaymentMethodOptionsGroup(t)

Translation keys added:
- settlement.periodType.* (settlementDate, transactionDate)
- settlement.searchCriteria, searchPeriod
- settlement.settlementCompleted, depositScheduled
- settlement.settlementInfo, transferStatus, transferId, transferTime
- settlement.bankName, accountNumber, depositorName
- settlement.settlementDepositAmount, errorReason
- settlement.transactionDetailInfo
- settlement.cardBankTelecom, approvalAccountPhone
- common.weekdays.* (sun-sat)
- common.currencyUnit

Localized components:
- filter/list-filter.tsx
- calandar-wrap.tsx, calendar-grid.tsx
- calendar-settlement-item.tsx, calandar-amount-row.tsx
- info-wrap/settlement-info-wrap.tsx
- info-wrap/transaction-info-wrap.tsx
- list-summary-extend-settlement.tsx
- list-summary-extend-transaction.tsx

All settlement components now support Korean/English language switching.

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

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

src/locales/en.json

@@ -17,7 +17,17 @@
         "noData": "No data available",
         "next": "Next",
         "latest": "Latest",
-        "oldest": "Oldest"
+        "oldest": "Oldest",
+        "weekdays": {
+            "sun": "Sun",
+            "mon": "Mon",
+            "tue": "Tue",
+            "wed": "Wed",
+            "thu": "Thu",
+            "fri": "Fri",
+            "sat": "Sat"
+        },
+        "currencyUnit": ""
     },
     "menu": {
         "home": "Home",
@@ -343,7 +353,35 @@
         "offset": "Offset",
         "transactionAmount": "Transaction Amount",
         "expectedSettlementAmount": "Expected Settlement Amount",
-        "preSettlementCancelOffset": "Pre-Settlement Cancel Offset"
+        "preSettlementCancelOffset": "Pre-Settlement Cancel Offset",
+        "periodType": {
+            "settlementDate": "Settlement Date",
+            "transactionDate": "Transaction Date"
+        },
+        "searchCriteria": "Search Criteria",
+        "searchPeriod": "Search Period",
+        "settlementCompleted": "Settlement Completed",
+        "depositScheduled": "Deposit Scheduled",
+        "previousMonth": "Previous Month",
+        "nextMonth": "Next Month",
+        "previous": "Previous",
+        "next": "Next",
+        "scheduled": "Scheduled",
+        "completed": "Completed",
+        "settlementScheduledAmount": "Settlement Scheduled Amount",
+        "settlementCompletedAmount": "Settlement Completed Amount",
+        "settlementInfo": "Settlement Information",
+        "transferStatus": "Transfer Status",
+        "transferId": "Transfer ID",
+        "transferTime": "Transfer Time",
+        "bankName": "Bank Name",
+        "accountNumber": "Account Number",
+        "depositorName": "Depositor Name",
+        "settlementDepositAmount": "Settlement Deposit Amount",
+        "errorReason": "Error Reason",
+        "transactionDetailInfo": "Transaction Detail Information",
+        "cardBankTelecom": "Card/Bank/Telecom",
+        "approvalAccountPhone": "Approval No./Account No./Phone No."
     },
     "transaction": {
         "listTitle": "Transactions",