Feat: 내보내기 파일명을 탭이름_미배치/배치결과.xlsx로 변경, 중복 시 (숫자) 증가

app.py

@@ -805,8 +805,17 @@ def export():
     wb = openpyxl.Workbook()
     wp_lookup = {wp['id']: wp for wp in t['workplaces']}
     tab_name = t['name']
-    fname = store.get('filename', 'export.xlsx')
-    base, ext = os.path.splitext(fname)
+
+    suffix_map = {'unassigned': '미배치', 'assigned': '배치결과', 'all': '배치결과'}
+    suffix = suffix_map.get(export_type, '배치결과')
+
+    def make_filename():
+        base = f'{tab_name}_{suffix}'
+        store.setdefault('export_seq', {})
+        key = base
+        seq = store['export_seq'].get(key, 0) + 1
+        store['export_seq'][key] = seq
+        return f'{base}.xlsx' if seq == 1 else f'{base} ({seq}).xlsx'
 
     if export_type == 'unassigned':
         ws = wb.active
@@ -815,7 +824,6 @@ def export():
         for w in t['workers']:
             if w['id'] not in t['assignments']:
                 ws.append([w['name'], w['hope'], w['address'], w['dob'], w['phone']])
-        dn = f'{base}_{tab_name}_미배치{ext}'
 
     elif export_type == 'assigned':
         ws = wb.active
@@ -842,9 +850,8 @@ def export():
             aw = [w['name'] for w in t['workers'] if t['assignments'].get(w['id']) in g['workplace_ids']]
             if aw:
                 ws2.append([combined_name, addr, len(aw), ', '.join(aw)])
-        dn = f'{base}_{tab_name}_배치결과{ext}'
 
-    else:  # all (기존 동작)
+    else:  # all (전체)
         ws1 = wb.active
         ws1.title = '배치 현황'
         ws1.append(['이름', '연락처', '생년월일', '희망사항', '주소', '배치근무지', '근무지주소'])
@@ -866,11 +873,11 @@ def export():
             combined_name = ', '.join(g['names'])
             aw = [w['name'] for w in t['workers'] if t['assignments'].get(w['id']) in g['workplace_ids']]
             ws2.append([combined_name, addr, len(aw), ', '.join(aw)])
-        dn = f'{base}_{tab_name}_배치결과{ext}'
 
     buf = io.BytesIO()
     wb.save(buf)
     buf.seek(0)
+    dn = make_filename()
     return send_file(buf, as_attachment=True, download_name=dn,
                      mimetype='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')