refactor: XKeypad 구현 롤백 및 일반 password input으로 변경

- XKeypad 관련 모든 코드 제거
- 일반 password input 필드로 복원
- 불필요한 ref, useEffect 제거
- select 요소 value 속성으로 변경

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

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

src/pages/account/password/modify-cancel-password-page.tsx

@@ -1,4 +1,4 @@
-import { useState, useRef, useEffect, ChangeEvent } from 'react';
+import { useState } from 'react';
 import { PATHS } from '@/shared/constants/paths';
 import { useNavigate } from '@/shared/lib/hooks/use-navigate';
 import { HeaderType } from '@/entities/common/model/types';
@@ -10,7 +10,7 @@ import {
 } from '@/widgets/sub-layout/use-sub-layout';
 import { useUserChangeCancelPasswordMutation } from '@/entities/user/api/use-user-change-cancel-password-mutation';
 import { useStore } from '@/shared/model/store';
-import { XKeypad, XKeypadManager, createPasswordKeypad } from '@/utils/xkeypad';
+import { snackBar } from '@/shared/lib/toast';
 
 export const PasswordModifyCancelPasswordPage = () => {
   const { navigate } = useNavigate();
@@ -20,69 +20,20 @@ export const PasswordModifyCancelPasswordPage = () => {
   const [mid, setMid] = useState<string>(userMid);
   const [password, setPassword] = useState<string>('');
   const [confirmPassword, setConfirmPassword] = useState<string>('');
-  const [isKeypadLoaded, setIsKeypadLoaded] = useState(false);
-
-  // Input refs for xkeypad
-  const passwordInputRef = useRef<HTMLInputElement>(null);
-  const confirmPasswordInputRef = useRef<HTMLInputElement>(null);
-
-  // XKeypad instances
-  const passwordKeypadRef = useRef<XKeypad | null>(null);
-  const confirmPasswordKeypadRef = useRef<XKeypad | null>(null);
-
-  // RSA Keys (실제 프로덕션에서는 서버에서 받아와야 함)
-  const RSA_MODULUS = "C4F7B39E2E93DB19C016C7A0C1C05B028A1D57CB9B91E13F5B7353F8FB5AC6CE6BE31ABEB8E8F7AD18B90C08F4EBC011A6A8FCE614EA879ED5B96296B969CE92923BC9BAD6FD87F00E08F529F93010EA77E40937BDAC1C866E79ACE2F2822A3ECD982F90532D5301CF90D9BF89E953A0593AB6C5F31E99B690DD582FB85F85A9";
-  const RSA_EXPONENT = "10001";
 
   const changeCancelPasswordMutation = useUserChangeCancelPasswordMutation({
     onSuccess: () => {
-      // snackBar('비밀번호가 성공적으로 변경되었습니다.');
-      // Clear form and keypads
+      snackBar('비밀번호가 성공적으로 변경되었습니다.');
+      // Clear form
       setPassword('');
       setConfirmPassword('');
-      if (passwordKeypadRef.current) passwordKeypadRef.current.clear();
-      if (confirmPasswordKeypadRef.current) confirmPasswordKeypadRef.current.clear();
-      if (passwordInputRef.current) passwordInputRef.current.value = '';
-      if (confirmPasswordInputRef.current) confirmPasswordInputRef.current.value = '';
       // Navigate back
       navigate(PATHS.account.password.manage);
     },
     onError: (error) => {
-      // snackBar(error?.response?.data?.message || '비밀번호 변경에 실패했습니다.');
+      snackBar(error?.response?.data?.message || '비밀번호 변경에 실패했습니다.');
     }
   });
-  // Initialize XKeypad
-  useEffect(() => {
-    const initializeKeypad = async () => {
-      try {
-        const manager = XKeypadManager.getInstance({
-          modulus: RSA_MODULUS,
-          exponent: RSA_EXPONENT
-        });
-
-        await manager.loadScripts();
-
-        // RSA 키 설정을 명시적으로 다시 한번 수행
-        manager.setRSAPublicKey(RSA_MODULUS, RSA_EXPONENT);
-
-        setIsKeypadLoaded(true);
-      } catch (error) {
-        console.error('Failed to load XKeypad:', error);
-      }
-    };
-
-    initializeKeypad();
-
-    return () => {
-      // Cleanup keypads on unmount
-      if (passwordKeypadRef.current) {
-        passwordKeypadRef.current.destroy();
-      }
-      if (confirmPasswordKeypadRef.current) {
-        confirmPasswordKeypadRef.current.destroy();
-      }
-    };
-  }, []);
 
   useSetHeaderTitle('거래취소 비밀번호 변경');
   useSetHeaderType(HeaderType.LeftArrow);
@@ -100,97 +51,10 @@ export const PasswordModifyCancelPasswordPage = () => {
     );
   };
 
-  // Handle password keypad
-  const handlePasswordKeypad = async () => {
-    if (!passwordInputRef.current || !isKeypadLoaded) return;
-
-    // Close other keypad if open
-    if (confirmPasswordKeypadRef.current) {
-      confirmPasswordKeypadRef.current.close();
-    }
-
-    // Create or initialize password keypad
-    if (!passwordKeypadRef.current) {
-      passwordKeypadRef.current = createPasswordKeypad(passwordInputRef.current, {
-        keyType: 'qwertysmart',
-        viewType: 'half',
-        maxInputSize: 16,
-        useOverlay: true,
-        useModal: false,
-        hasPressEffect: true,
-        isE2E: false, // E2E 모드 비활성화
-        onInputChange: (length: number) => {
-          // Update password state as typing
-          if (passwordKeypadRef.current) {
-            const plainText = passwordKeypadRef.current.getPlainText();
-            console.log('passwordKeypadRef:', plainText, passwordInputRef.current?.value);
-            setPassword(plainText);
-          }
-        },
-        onKeypadClose: () => {
-          // Final update when keypad closes
-          if (passwordKeypadRef.current) {
-            const plainText = passwordKeypadRef.current.getPlainText();
-            setPassword(plainText);
-          }
-        }
-      });
-    }
-
-    const result = await passwordKeypadRef.current.initialize(passwordInputRef.current);
-    if (result !== 0) {
-      console.error('Failed to initialize password keypad');
-    }
-  };
-
-  // Handle confirm password keypad
-  const handleConfirmPasswordKeypad = async () => {
-    if (!confirmPasswordInputRef.current || !isKeypadLoaded) return;
-
-    // Close other keypad if open
-    if (passwordKeypadRef.current) {
-      passwordKeypadRef.current.close();
-    }
-
-    // Create or initialize confirm password keypad
-    if (!confirmPasswordKeypadRef.current) {
-      confirmPasswordKeypadRef.current = createPasswordKeypad(confirmPasswordInputRef.current, {
-        keyType: 'qwertysmart',
-        viewType: 'half',
-        maxInputSize: 16,
-        useOverlay: true,
-        useModal: false,
-        hasPressEffect: true,
-        isE2E: false, // E2E 모드 비활성화
-        onInputChange: (length: number) => {
-          // Update confirm password state as typing
-          if (confirmPasswordKeypadRef.current) {
-            const plainText = confirmPasswordKeypadRef.current.getPlainText();
-            console.log('confirmPasswordKeypadRef:', plainText, confirmPasswordInputRef.current?.value);
-            setConfirmPassword(plainText);
-          }
-        },
-        onKeypadClose: () => {
-          // Final update when keypad closes
-          if (confirmPasswordKeypadRef.current) {
-            const plainText = confirmPasswordKeypadRef.current.getPlainText();
-            setConfirmPassword(plainText);
-          }
-        }
-      });
-    }
-
-    const result = await confirmPasswordKeypadRef.current.initialize(confirmPasswordInputRef.current);
-    if (result !== 0) {
-      console.error('Failed to initialize confirm password keypad');
-    }
-  };
-
   // 저장 버튼 클릭 핸들러
   const handleSave = () => {
     if (!isFormValid()) return;
 
-    // 평문 비밀번호 사용 (E2E 모드가 꺼져있으므로)
     changeCancelPasswordMutation.mutate({
       mid,
       password: password
@@ -208,15 +72,15 @@ export const PasswordModifyCancelPasswordPage = () => {
                   <div className="ua-label">가맹점 <span className="red">*</span></div>
                   <select
                     className="wid-100"
-                    value={ mid }
-                    onChange={ (e: ChangeEvent<HTMLSelectElement>) => setMid(e.target.value) }
+                    value={mid}
+                    onChange={(e) => setMid(e.target.value)}
                   >
                   {
-                    midOptions.map((value, index) => (
+                    midOptions.map((value) => (
                       <option
-                        key={ value.value }
-                        value={ value.value }
-                      >{ value.name }</option>
+                        key={value.value}
+                        value={value.value}
+                      >{value.name}</option>
                     ))
                   }
                   </select>
@@ -224,27 +88,21 @@ export const PasswordModifyCancelPasswordPage = () => {
                 <div className="ua-row">
                   <div className="ua-label">변경 비밀번호 <span className="red">*</span></div>
                   <input
-                    ref={passwordInputRef}
                     className={`wid-100 ${confirmPassword && password !== confirmPassword ? 'error' : ''}`}
                     type="password"
-                    placeholder="클릭하여 비밀번호 입력"
+                    placeholder="비밀번호를 입력하세요"
                     value={password}
-                    onClick={handlePasswordKeypad}
-                    readOnly
-                    style={{ cursor: 'pointer' }}
+                    onChange={(e) => setPassword(e.target.value)}
                   />
                 </div>
                 <div className="ua-row">
                   <div className="ua-label">변경 비밀번호 재입력 <span className="red">*</span></div>
                   <input
-                    ref={confirmPasswordInputRef}
                     className={`wid-100 ${confirmPassword && password !== confirmPassword ? 'error' : ''}`}
                     type="password"
-                    placeholder="클릭하여 비밀번호 재입력"
+                    placeholder="비밀번호를 다시 입력하세요"
                     value={confirmPassword}
-                    onClick={handleConfirmPasswordKeypad}
-                    readOnly
-                    style={{ cursor: 'pointer' }}
+                    onChange={(e) => setConfirmPassword(e.target.value)}
                   />
                 </div>
                 {confirmPassword && password !== confirmPassword && (