Add KeyIn pre/post cancel types and improve English translations

- Add PRE_CANCEL and POST_CANCEL transaction types to KeyIn payment
- Update English translations for better readability (FAQ, Settlement Service)
- Fix calendar month date parsing to handle format correctly

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

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

src/locales/en.json

@@ -191,7 +191,7 @@
             }
         },
         "faq": {
-            "title": "Frequently Asked Questions",
+            "title": "FAQ",
             "searchPlaceholder": "Enter search keyword",
             "all": "All",
             "inquiryButton": "Contact Support",
@@ -219,13 +219,13 @@
             "categories": {
                 "all": "All",
                 "choose": "Choose",
-                "01": "Billing & Tax Inquiry",
-                "02": "Transaction & Cancellation Inquiry",
-                "03": "Contract & Service Request Inquiry",
-                "04": "Technical & Payment Error Inquiry",
+                "01": "Billing & Tax",
+                "02": "Transaction & Cancellation",
+                "03": "Contract & Service Request",
+                "04": "Technical & Payment Error",
                 "05": "Others",
-                "06": "Service Usage Inquiry",
-                "09": "Credit Limit & Insurance Inquiry"
+                "06": "Service Usage",
+                "09": "Credit Limit & Insurance"
             },
             "statusCode": {
                 "all": "All",
@@ -830,7 +830,7 @@
             "faceAuthDesc": "Secure payment service with face recognition for easy identity verification"
         },
         "settlementAgency": {
-            "title": "Settlement Agency",
+            "title": "Settlement Service",
             "depositConfirmation": "Deposit Confirmation",
             "settlementInfo": "Settlement Information",
             "settlementId": "Settlement ID",
@@ -1042,6 +1042,8 @@
         "keyIn": {
             "fullCancel": "Full Cancel",
             "partialCancel": "Partial Cancel",
+            "preCancel": "Pre-cancel",
+            "postCancel": "Post-cancel",
             "productPrice": "Product Price"
         },
         "infoWrap": {