feat(malaysia): 입출고 일자별 낱개 수량 엑셀 다운로드

- '일괄 적용' 버튼명 '입력'으로 변경
- 입력 버튼 우측 '다운로드' 버튼 추가
- GET /malaysia/movements/export: 해당 일자/종류(IN/OUT) 낱개 합계를
  엑셀(A=사방넷코드, B=수량, C=이름)로 스트리밍
- db.daily_movement_totals(): 일자/종류별 낱개 합계 집계
- itemcode.sabangnet_code_map(): item_code → 사방넷 코드 매핑
- i18n 사전 '입력'/'다운로드' 추가, malaysia.js 캐시 버전 bump

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/modules/malaysia/router.py

@@ -14,7 +14,7 @@ from __future__ import annotations
 from typing import Any
 
 from fastapi import APIRouter, Body, Depends, Form, HTTPException, Request
-from fastapi.responses import HTMLResponse, JSONResponse, RedirectResponse
+from fastapi.responses import HTMLResponse, JSONResponse, RedirectResponse, StreamingResponse
 
 from app.timezone import today_kst
 
@@ -292,6 +292,60 @@ async def movements_apply(request: Request, user: dict[str, Any] = Depends(_requ
     return RedirectResponse(url=f"/malaysia/movements?wh={wh}&type={mtype}", status_code=303)
 
 
+@router.get("/movements/export")
+async def movements_export(request: Request) -> StreamingResponse:
+    """해당 일자/종류(IN/OUT)에 입출고된 낱개 수량을 엑셀로 내보낸다.
+
+    컬럼: A=사방넷 코드, B=수량, C=이름.
+    세트 OUT 은 생성 시 구성품 OUT 으로 분해 저장되므로 낱개 기준으로 합산된다.
+    """
+    import io  # noqa: WPS433
+
+    guard = _guard(request)
+    if not isinstance(guard, tuple):
+        return guard  # type: ignore[return-value]
+    st, _user = guard
+    wh = _selected_wh(request, st)
+    mtype = (request.query_params.get("type") or "OUT").strip().upper()
+    if mtype not in ("IN", "OUT"):
+        raise HTTPException(status_code=400, detail="type 은 IN 또는 OUT 이어야 합니다.")
+    mdate = (request.query_params.get("date") or today_kst().isoformat()).strip()
+
+    totals = st.daily_movement_totals(
+        warehouse_code=wh, movement_date=mdate, movement_type=mtype
+    )
+    reader = _reader(request)
+    sabang = reader.sabangnet_code_map() if reader else {}
+    names = reader.name_map() if reader else {}
+    item_names = st.item_name_map()
+
+    from openpyxl import Workbook  # noqa: WPS433
+
+    wb = Workbook()
+    ws = wb.active
+    ws.title = f"{mtype}_{mdate}"
+    ws.append(["사방넷코드", "수량", "이름"])
+    for code in sorted(totals.keys()):
+        qty = totals[code]
+        if qty == 0:
+            continue
+        ws.append([
+            sabang.get(code, ""),
+            int(qty),
+            names.get(code) or item_names.get(code) or code,
+        ])
+
+    buf = io.BytesIO()
+    wb.save(buf)
+    buf.seek(0)
+    fname = f"malaysia_{mtype}_{mdate}.xlsx"
+    return StreamingResponse(
+        buf,
+        media_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+        headers={"Content-Disposition": f'attachment; filename="{fname}"'},
+    )
+
+
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