refactor: AlbumForm.jsx 분리 - CustomSelect, TrackItem 컴포넌트 추출

- CustomSelect.jsx 추출 → common/ (재사용 가능한 드롭다운)
- TrackItem.jsx 추출 → album/ (트랙 입력 폼)
- AlbumForm.jsx: 631줄 → 443줄 (188줄 감소)

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

docs/frontend-improvement.md

@@ -48,7 +48,7 @@ components/
 | Schedules.jsx | 1465 | 1159 | ✅ 분리 완료 |
 | ScheduleForm.jsx | 1047 | 765 | ✅ 분리 완료 |
 | ScheduleDict.jsx | 714 | 572 | ✅ 분리 완료 |
-| AlbumForm.jsx | 631 | 631 | 미분리 |
+| AlbumForm.jsx | 631 | 443 | ✅ 분리 완료 |
 
 ---
 
@@ -96,8 +96,10 @@ components/
 │       │   ├── ScheduleItem.jsx      # 일정 아이템 (리스트용)
 │       │   ├── LocationSearchDialog.jsx  # 장소 검색 모달
 │       │   ├── MemberSelector.jsx    # 멤버 선택 UI
-│       │   └── ImageUploader.jsx     # 이미지 업로드
-│       └── album/            # PhotoUploader 등
+│       │   ├── ImageUploader.jsx     # 이미지 업로드
+│       │   └── WordItem.jsx          # 사전 단어 아이템
+│       └── album/            # ✅ 추가된 컴포넌트들:
+│           └── TrackItem.jsx         # 트랙 입력 폼
 ```
 
 ### 2.3 중복 코드 제거
@@ -179,8 +181,10 @@ pages/pc/admin/schedules/
 3. [x] ScheduleDict.jsx 분리 (714줄 → 572줄, 142줄 감소)
    - `WordItem.jsx` 추출 (단어 테이블 행 컴포넌트)
    - `POS_TAGS` 상수 함께 분리
-4. [ ] AlbumPhotos.jsx 분리 (1536줄, 구조 복잡)
-5. [ ] AlbumForm.jsx 분리 (631줄)
+4. [x] AlbumForm.jsx 분리 (631줄 → 443줄, 188줄 감소)
+   - `CustomSelect.jsx` 추출 (공통 드롭다운 → common/)
+   - `TrackItem.jsx` 추출 (트랙 입력 폼 → album/)
+5. [ ] AlbumPhotos.jsx 분리 (1536줄, 구조 복잡)
 
 ### Phase 3: 추가 개선
 1. [x] 관리자 페이지용 에러 페이지 추가 (404)

frontend-temp/src/components/pc/admin/album/TrackItem.jsx

@@ -0,0 +1,153 @@
+/**
+ * 앨범 트랙 입력 컴포넌트
+ */
+import { memo } from 'react';
+import { motion, AnimatePresence } from 'framer-motion';
+import { Trash2, Star, ChevronDown } from 'lucide-react';
+
+/**
+ * @param {Object} props
+ * @param {Object} props.track - 트랙 데이터
+ * @param {number} props.index - 트랙 인덱스
+ * @param {Function} props.onUpdate - 트랙 업데이트 핸들러 (index, field, value)
+ * @param {Function} props.onRemove - 트랙 삭제 핸들러 ()
+ */
+const TrackItem = memo(function TrackItem({ track, index, onUpdate, onRemove }) {
+  return (
+    <div className="border border-gray-200 rounded-xl p-4">
+      <div className="flex items-center justify-between mb-4">
+        <div className="flex items-center gap-3">
+          <span className="w-8 h-8 bg-gray-100 rounded-lg flex items-center justify-center text-sm font-medium text-gray-600">
+            {String(track.track_number).padStart(2, '0')}
+          </span>
+          <button
+            type="button"
+            onClick={() => onUpdate(index, 'is_title_track', !track.is_title_track)}
+            className={`flex items-center gap-1.5 px-3 py-1 rounded-full text-xs font-medium transition-colors ${
+              track.is_title_track
+                ? 'bg-primary text-white'
+                : 'bg-gray-100 text-gray-500 hover:bg-gray-200'
+            }`}
+          >
+            <Star size={12} fill={track.is_title_track ? 'currentColor' : 'none'} />
+            타이틀
+          </button>
+        </div>
+        <button
+          type="button"
+          onClick={onRemove}
+          className="p-1.5 text-gray-400 hover:text-red-500 hover:bg-red-50 rounded-lg transition-colors"
+        >
+          <Trash2 size={16} />
+        </button>
+      </div>
+
+      <div className="grid grid-cols-4 gap-4">
+        <div className="col-span-3">
+          <input
+            type="text"
+            value={track.title}
+            onChange={(e) => onUpdate(index, 'title', e.target.value)}
+            className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
+            placeholder="곡 제목"
+          />
+        </div>
+        <div>
+          <input
+            type="text"
+            value={track.duration || ''}
+            onChange={(e) => onUpdate(index, 'duration', e.target.value)}
+            className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent text-center"
+            placeholder="0:00"
+          />
+        </div>
+      </div>
+
+      {/* 상세 정보 토글 */}
+      <div className="mt-3">
+        <button
+          type="button"
+          onClick={() => onUpdate(index, 'showDetails', !track.showDetails)}
+          className="text-sm text-gray-500 hover:text-gray-700 flex items-center gap-1 transition-colors"
+        >
+          <ChevronDown
+            size={14}
+            className={`transition-transform ${track.showDetails ? 'rotate-180' : ''}`}
+          />
+          상세 정보 {track.showDetails ? '접기' : '펼치기'}
+        </button>
+      </div>
+
+      <AnimatePresence>
+        {track.showDetails && (
+          <motion.div
+            initial={{ height: 0, opacity: 0 }}
+            animate={{ height: 'auto', opacity: 1 }}
+            exit={{ height: 0, opacity: 0 }}
+            transition={{ duration: 0.2 }}
+          >
+            {/* 작사/작곡/편곡 */}
+            <div className="space-y-3 mt-3">
+              <div>
+                <label className="block text-xs text-gray-500 mb-1">작사</label>
+                <input
+                  type="text"
+                  value={track.lyricist || ''}
+                  onChange={(e) => onUpdate(index, 'lyricist', e.target.value)}
+                  className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
+                  placeholder="여러 명일 경우 쉼표로 구분"
+                />
+              </div>
+              <div>
+                <label className="block text-xs text-gray-500 mb-1">작곡</label>
+                <input
+                  type="text"
+                  value={track.composer || ''}
+                  onChange={(e) => onUpdate(index, 'composer', e.target.value)}
+                  className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
+                  placeholder="여러 명일 경우 쉼표로 구분"
+                />
+              </div>
+              <div>
+                <label className="block text-xs text-gray-500 mb-1">편곡</label>
+                <input
+                  type="text"
+                  value={track.arranger || ''}
+                  onChange={(e) => onUpdate(index, 'arranger', e.target.value)}
+                  className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
+                  placeholder="여러 명일 경우 쉼표로 구분"
+                />
+              </div>
+            </div>
+
+            {/* MV URL */}
+            <div className="mt-3">
+              <label className="block text-xs text-gray-500 mb-1">뮤직비디오 URL</label>
+              <input
+                type="text"
+                value={track.music_video_url || ''}
+                onChange={(e) => onUpdate(index, 'music_video_url', e.target.value)}
+                className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
+                placeholder="https://youtube.com/watch?v=..."
+              />
+            </div>
+
+            {/* 가사 */}
+            <div className="mt-3">
+              <label className="block text-xs text-gray-500 mb-1">가사</label>
+              <textarea
+                value={track.lyrics || ''}
+                onChange={(e) => onUpdate(index, 'lyrics', e.target.value)}
+                rows={12}
+                className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent resize-none min-h-[200px]"
+                placeholder="가사를 입력하세요..."
+              />
+            </div>
+          </motion.div>
+        )}
+      </AnimatePresence>
+    </div>
+  );
+});
+
+export default TrackItem;

frontend-temp/src/components/pc/admin/album/index.js

@@ -0,0 +1 @@
+export { default as TrackItem } from './TrackItem';

frontend-temp/src/components/pc/admin/common/CustomSelect.jsx

@@ -0,0 +1,74 @@
+/**
+ * 커스텀 드롭다운 셀렉트 컴포넌트
+ */
+import { useState, useRef, useEffect } from 'react';
+import { motion, AnimatePresence } from 'framer-motion';
+import { ChevronDown } from 'lucide-react';
+
+/**
+ * @param {Object} props
+ * @param {string} props.value - 선택된 값
+ * @param {Function} props.onChange - 값 변경 핸들러
+ * @param {string[]} props.options - 옵션 목록
+ * @param {string} props.placeholder - 플레이스홀더
+ */
+function CustomSelect({ value, onChange, options, placeholder }) {
+  const [isOpen, setIsOpen] = useState(false);
+  const ref = useRef(null);
+
+  useEffect(() => {
+    const handleClickOutside = (e) => {
+      if (ref.current && !ref.current.contains(e.target)) {
+        setIsOpen(false);
+      }
+    };
+    document.addEventListener('mousedown', handleClickOutside);
+    return () => document.removeEventListener('mousedown', handleClickOutside);
+  }, []);
+
+  return (
+    <div ref={ref} className="relative">
+      <button
+        type="button"
+        onClick={() => setIsOpen(!isOpen)}
+        className="w-full px-4 py-2.5 border border-gray-200 rounded-lg bg-white flex items-center justify-between hover:border-gray-300 transition-colors focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
+      >
+        <span className={value ? 'text-gray-900' : 'text-gray-400'}>{value || placeholder}</span>
+        <ChevronDown
+          size={18}
+          className={`text-gray-400 transition-transform ${isOpen ? 'rotate-180' : ''}`}
+        />
+      </button>
+
+      <AnimatePresence>
+        {isOpen && (
+          <motion.div
+            initial={{ opacity: 0, y: -10 }}
+            animate={{ opacity: 1, y: 0 }}
+            exit={{ opacity: 0, y: -10 }}
+            transition={{ duration: 0.15 }}
+            className="absolute z-50 w-full mt-2 bg-white border border-gray-200 rounded-xl shadow-lg overflow-hidden"
+          >
+            {options.map((option) => (
+              <button
+                key={option}
+                type="button"
+                onClick={() => {
+                  onChange(option);
+                  setIsOpen(false);
+                }}
+                className={`w-full px-4 py-2.5 text-left hover:bg-gray-50 transition-colors ${
+                  value === option ? 'bg-primary/10 text-primary font-medium' : 'text-gray-700'
+                }`}
+              >
+                {option}
+              </button>
+            ))}
+          </motion.div>
+        )}
+      </AnimatePresence>
+    </div>
+  );
+}
+
+export default CustomSelect;

frontend-temp/src/components/pc/admin/common/index.js

@@ -1,4 +1,5 @@
 export { default as ConfirmDialog } from './ConfirmDialog';
+export { default as CustomSelect } from './CustomSelect';
 export { default as DatePicker } from './DatePicker';
 export { default as TimePicker } from './TimePicker';
 export { default as NumberPicker } from './NumberPicker';

frontend-temp/src/components/pc/admin/index.js

@@ -6,3 +6,6 @@ export * from './common';
 
 // 스케줄 관련
 export * from './schedule';
+
+// 앨범 관련
+export * from './album';

frontend-temp/src/pages/pc/admin/albums/AlbumForm.jsx

@@ -4,75 +4,15 @@
 import { useState, useRef, useEffect } from 'react';
 import { useNavigate, useParams, Link } from 'react-router-dom';
 import { useQuery, useQueryClient } from '@tanstack/react-query';
-import { motion, AnimatePresence } from 'framer-motion';
-import { Save, Home, ChevronRight, Music, Trash2, Plus, Image, Star, ChevronDown } from 'lucide-react';
+import { motion } from 'framer-motion';
+import { Save, Home, ChevronRight, Music, Plus, Image } from 'lucide-react';
 import { Toast } from '@/components/common';
-import { AdminLayout, DatePicker } from '@/components/pc/admin';
+import { AdminLayout, DatePicker, CustomSelect, TrackItem } from '@/components/pc/admin';
 import { useAdminAuth } from '@/hooks/pc/admin';
 import { useToast } from '@/hooks/common';
 import { adminAlbumApi } from '@/api/admin';
 import { fetchFormData } from '@/api/client';
 
-// 커스텀 드롭다운 컴포넌트
-function CustomSelect({ value, onChange, options, placeholder }) {
-  const [isOpen, setIsOpen] = useState(false);
-  const ref = useRef(null);
-
-  useEffect(() => {
-    const handleClickOutside = (e) => {
-      if (ref.current && !ref.current.contains(e.target)) {
-        setIsOpen(false);
-      }
-    };
-    document.addEventListener('mousedown', handleClickOutside);
-    return () => document.removeEventListener('mousedown', handleClickOutside);
-  }, []);
-
-  return (
-    <div ref={ref} className="relative">
-      <button
-        type="button"
-        onClick={() => setIsOpen(!isOpen)}
-        className="w-full px-4 py-2.5 border border-gray-200 rounded-lg bg-white flex items-center justify-between hover:border-gray-300 transition-colors focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
-      >
-        <span className={value ? 'text-gray-900' : 'text-gray-400'}>{value || placeholder}</span>
-        <ChevronDown
-          size={18}
-          className={`text-gray-400 transition-transform ${isOpen ? 'rotate-180' : ''}`}
-        />
-      </button>
-
-      <AnimatePresence>
-        {isOpen && (
-          <motion.div
-            initial={{ opacity: 0, y: -10 }}
-            animate={{ opacity: 1, y: 0 }}
-            exit={{ opacity: 0, y: -10 }}
-            transition={{ duration: 0.15 }}
-            className="absolute z-50 w-full mt-2 bg-white border border-gray-200 rounded-xl shadow-lg overflow-hidden"
-          >
-            {options.map((option) => (
-              <button
-                key={option}
-                type="button"
-                onClick={() => {
-                  onChange(option);
-                  setIsOpen(false);
-                }}
-                className={`w-full px-4 py-2.5 text-left hover:bg-gray-50 transition-colors ${
-                  value === option ? 'bg-primary/10 text-primary font-medium' : 'text-gray-700'
-                }`}
-              >
-                {option}
-              </button>
-            ))}
-          </motion.div>
-        )}
-      </AnimatePresence>
-    </div>
-  );
-}
-
 function AdminAlbumForm() {
   const navigate = useNavigate();
   const queryClient = useQueryClient();
@@ -454,141 +394,13 @@ function AdminAlbumForm() {
               ) : (
                 <div className="space-y-4">
                   {tracks.map((track, index) => (
-                    <div key={index} className="border border-gray-200 rounded-xl p-4">
-                      <div className="flex items-center justify-between mb-4">
-                        <div className="flex items-center gap-3">
-                          <span className="w-8 h-8 bg-gray-100 rounded-lg flex items-center justify-center text-sm font-medium text-gray-600">
-                            {String(track.track_number).padStart(2, '0')}
-                          </span>
-                          <button
-                            type="button"
-                            onClick={() => updateTrack(index, 'is_title_track', !track.is_title_track)}
-                            className={`flex items-center gap-1.5 px-3 py-1 rounded-full text-xs font-medium transition-colors ${
-                              track.is_title_track
-                                ? 'bg-primary text-white'
-                                : 'bg-gray-100 text-gray-500 hover:bg-gray-200'
-                            }`}
-                          >
-                            <Star size={12} fill={track.is_title_track ? 'currentColor' : 'none'} />
-                            타이틀
-                          </button>
-                        </div>
-                        <button
-                          type="button"
-                          onClick={() => removeTrack(index)}
-                          className="p-1.5 text-gray-400 hover:text-red-500 hover:bg-red-50 rounded-lg transition-colors"
-                        >
-                          <Trash2 size={16} />
-                        </button>
-                      </div>
-
-                      <div className="grid grid-cols-4 gap-4">
-                        <div className="col-span-3">
-                          <input
-                            type="text"
-                            value={track.title}
-                            onChange={(e) => updateTrack(index, 'title', e.target.value)}
-                            className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
-                            placeholder="곡 제목"
+                    <TrackItem
+                      key={index}
+                      track={track}
+                      index={index}
+                      onUpdate={updateTrack}
+                      onRemove={() => removeTrack(index)}
                     />
-                        </div>
-                        <div>
-                          <input
-                            type="text"
-                            value={track.duration || ''}
-                            onChange={(e) => updateTrack(index, 'duration', e.target.value)}
-                            className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent text-center"
-                            placeholder="0:00"
-                          />
-                        </div>
-                      </div>
-
-                      {/* 상세 정보 토글 */}
-                      <div className="mt-3">
-                        <button
-                          type="button"
-                          onClick={() => updateTrack(index, 'showDetails', !track.showDetails)}
-                          className="text-sm text-gray-500 hover:text-gray-700 flex items-center gap-1 transition-colors"
-                        >
-                          <ChevronDown
-                            size={14}
-                            className={`transition-transform ${track.showDetails ? 'rotate-180' : ''}`}
-                          />
-                          상세 정보 {track.showDetails ? '접기' : '펼치기'}
-                        </button>
-                      </div>
-
-                      <AnimatePresence>
-                        {track.showDetails && (
-                          <motion.div
-                            initial={{ height: 0, opacity: 0 }}
-                            animate={{ height: 'auto', opacity: 1 }}
-                            exit={{ height: 0, opacity: 0 }}
-                            transition={{ duration: 0.2 }}
-                          >
-                            {/* 작사/작곡/편곡 */}
-                            <div className="space-y-3 mt-3">
-                              <div>
-                                <label className="block text-xs text-gray-500 mb-1">작사</label>
-                                <input
-                                  type="text"
-                                  value={track.lyricist || ''}
-                                  onChange={(e) => updateTrack(index, 'lyricist', e.target.value)}
-                                  className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
-                                  placeholder="여러 명일 경우 쉼표로 구분"
-                                />
-                              </div>
-                              <div>
-                                <label className="block text-xs text-gray-500 mb-1">작곡</label>
-                                <input
-                                  type="text"
-                                  value={track.composer || ''}
-                                  onChange={(e) => updateTrack(index, 'composer', e.target.value)}
-                                  className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
-                                  placeholder="여러 명일 경우 쉼표로 구분"
-                                />
-                              </div>
-                              <div>
-                                <label className="block text-xs text-gray-500 mb-1">편곡</label>
-                                <input
-                                  type="text"
-                                  value={track.arranger || ''}
-                                  onChange={(e) => updateTrack(index, 'arranger', e.target.value)}
-                                  className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
-                                  placeholder="여러 명일 경우 쉼표로 구분"
-                                />
-                              </div>
-                            </div>
-
-                            {/* MV URL */}
-                            <div className="mt-3">
-                              <label className="block text-xs text-gray-500 mb-1">
-                                뮤직비디오 URL
-                              </label>
-                              <input
-                                type="text"
-                                value={track.music_video_url || ''}
-                                onChange={(e) => updateTrack(index, 'music_video_url', e.target.value)}
-                                className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
-                                placeholder="https://youtube.com/watch?v=..."
-                              />
-                            </div>
-
-                            {/* 가사 */}
-                            <div className="mt-3">
-                              <label className="block text-xs text-gray-500 mb-1">가사</label>
-                              <textarea
-                                value={track.lyrics || ''}
-                                onChange={(e) => updateTrack(index, 'lyrics', e.target.value)}
-                                rows={12}
-                                className="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent resize-none min-h-[200px]"
-                                placeholder="가사를 입력하세요..."
-                              />
-                            </div>
-                          </motion.div>
-                        )}
-                      </AnimatePresence>
-                    </div>
                   ))}
                 </div>
               )}