feat:계정과목 선택에 검색 기능 추가

- 단순 select를 검색 가능한 커스텀 드롭다운으로 변경
- 코드 또는 이름으로 실시간 검색
- 선택값 초기화(X) 버튼 추가
- 외부 클릭 시 드롭다운 닫힘

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

resources/views/barobill/eaccount/index.blade.php

@@ -154,22 +154,123 @@ className={`px-4 py-2 rounded-lg text-sm font-medium transition-colors ${
         </div>
     );
 
-    // AccountCodeSelect Component
-    const AccountCodeSelect = ({ value, onChange, accountCodes }) => (
-        <select
-            value={value || ''}
-            onChange={(e) => {
-                const selected = accountCodes.find(c => c.code === e.target.value);
-                onChange(e.target.value, selected?.name || '');
-            }}
-            className="w-full px-2 py-1 text-xs border border-stone-200 rounded focus:ring-2 focus:ring-emerald-500 outline-none bg-white"
-        >
-            <option value="">선택</option>
-            {accountCodes.map(code => (
-                <option key={code.code} value={code.code}>{code.code} {code.name}</option>
-            ))}
-        </select>
-    );
+    // AccountCodeSelect Component (검색 가능한 드롭다운)
+    const AccountCodeSelect = ({ value, onChange, accountCodes }) => {
+        const [isOpen, setIsOpen] = useState(false);
+        const [search, setSearch] = useState('');
+        const containerRef = useRef(null);
+
+        // 선택된 값의 표시 텍스트
+        const selectedItem = accountCodes.find(c => c.code === value);
+        const displayText = selectedItem ? `${selectedItem.code} ${selectedItem.name}` : '';
+
+        // 검색 필터링
+        const filteredCodes = accountCodes.filter(code => {
+            if (!search) return true;
+            const searchLower = search.toLowerCase();
+            return code.code.toLowerCase().includes(searchLower) ||
+                   code.name.toLowerCase().includes(searchLower);
+        });
+
+        // 외부 클릭 시 닫기
+        useEffect(() => {
+            const handleClickOutside = (e) => {
+                if (containerRef.current && !containerRef.current.contains(e.target)) {
+                    setIsOpen(false);
+                    setSearch('');
+                }
+            };
+            document.addEventListener('mousedown', handleClickOutside);
+            return () => document.removeEventListener('mousedown', handleClickOutside);
+        }, []);
+
+        const handleSelect = (code) => {
+            const selected = accountCodes.find(c => c.code === code.code);
+            onChange(code.code, selected?.name || '');
+            setIsOpen(false);
+            setSearch('');
+        };
+
+        const handleClear = (e) => {
+            e.stopPropagation();
+            onChange('', '');
+            setSearch('');
+        };
+
+        return (
+            <div ref={containerRef} className="relative">
+                {/* 선택 버튼 */}
+                <div
+                    onClick={() => setIsOpen(!isOpen)}
+                    className={`w-full px-2 py-1 text-xs border rounded cursor-pointer flex items-center justify-between gap-1 ${
+                        isOpen ? 'border-emerald-500 ring-2 ring-emerald-500' : 'border-stone-200'
+                    } bg-white`}
+                >
+                    <span className={displayText ? 'text-stone-900' : 'text-stone-400'}>
+                        {displayText || '선택'}
+                    </span>
+                    <div className="flex items-center gap-1">
+                        {value && (
+                            <button
+                                onClick={handleClear}
+                                className="text-stone-400 hover:text-stone-600"
+                            >
+                                <svg className="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M6 18L18 6M6 6l12 12" />
+                                </svg>
+                            </button>
+                        )}
+                        <svg className={`w-3 h-3 text-stone-400 transition-transform ${isOpen ? 'rotate-180' : ''}`} fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M19 9l-7 7-7-7" />
+                        </svg>
+                    </div>
+                </div>
+
+                {/* 드롭다운 */}
+                {isOpen && (
+                    <div className="absolute z-50 mt-1 w-48 bg-white border border-stone-200 rounded-lg shadow-lg">
+                        {/* 검색 입력 */}
+                        <div className="p-2 border-b border-stone-100">
+                            <input
+                                type="text"
+                                value={search}
+                                onChange={(e) => setSearch(e.target.value)}
+                                placeholder="코드 또는 이름 검색..."
+                                className="w-full px-2 py-1 text-xs border border-stone-200 rounded focus:ring-1 focus:ring-emerald-500 outline-none"
+                                autoFocus
+                            />
+                        </div>
+                        {/* 옵션 목록 */}
+                        <div className="max-h-48 overflow-y-auto">
+                            {filteredCodes.length === 0 ? (
+                                <div className="px-3 py-2 text-xs text-stone-400 text-center">
+                                    검색 결과 없음
+                                </div>
+                            ) : (
+                                filteredCodes.slice(0, 50).map(code => (
+                                    <div
+                                        key={code.code}
+                                        onClick={() => handleSelect(code)}
+                                        className={`px-3 py-1.5 text-xs cursor-pointer hover:bg-emerald-50 ${
+                                            value === code.code ? 'bg-emerald-100 text-emerald-700' : 'text-stone-700'
+                                        }`}
+                                    >
+                                        <span className="font-mono text-emerald-600">{code.code}</span>
+                                        <span className="ml-1">{code.name}</span>
+                                    </div>
+                                ))
+                            )}
+                            {filteredCodes.length > 50 && (
+                                <div className="px-3 py-1 text-xs text-stone-400 text-center border-t">
+                                    +{filteredCodes.length - 50}개 더 있음
+                                </div>
+                            )}
+                        </div>
+                    </div>
+                )}
+            </div>
+        );
+    };
 
     // AccountCodeSettingsModal Component
     const AccountCodeSettingsModal = ({ isOpen, onClose, onUpdate }) => {