fix(admin/orders): 거래명세표 컬럼 폭 재조정 — 품명 넓게, 수량·비고 좁게

* 수량 컬럼: w-20 → w-14 (header), QtyInput w-16 → w-11
* 비고 컬럼: w-32 → w-20
* 품명은 무제한 폭으로 둬서 줄어든 만큼 자동 확장

화면/이미지 공유/인쇄 모두 동일하게 적용 (캡처 영역 내 변경).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/(main)/m/admin/orders/page.tsx

@@ -778,12 +778,12 @@ function StatementPreview({
             <th className="border border-slate-300 px-1.5 py-1.5 text-left">품명</th>
             <th className="border border-slate-300 px-1.5 py-1.5 w-12">구분</th>
             <th className="border border-slate-300 px-1.5 py-1.5 w-14 js-no-export">현재고</th>
-            <th className="border border-slate-300 px-1.5 py-1.5 w-20">수량</th>
+            <th className="border border-slate-300 px-1.5 py-1.5 w-14">수량</th>
             <th className="border border-slate-300 px-1.5 py-1.5 w-20">단가</th>
             <th className="border border-slate-300 px-1.5 py-1.5">공급가</th>
             <th className="border border-slate-300 px-1.5 py-1.5">세액</th>
             <th className="border border-slate-300 px-1.5 py-1.5">합계</th>
-            <th className="border border-slate-300 px-1.5 py-1.5 w-32">비고</th>
+            <th className="border border-slate-300 px-1.5 py-1.5 w-20">비고</th>
             {editable && <th className="border border-slate-300 px-1 py-1.5 w-8"></th>}
           </tr>
         </thead>
@@ -1203,7 +1203,7 @@ function QtyInput({ initial, onSave }: { initial: number; onSave: (q: number) =>
       onChange={(e) => setVal(e.target.value)}
       onBlur={commit}
       onKeyDown={(e) => { if (e.key === "Enter") (e.target as HTMLInputElement).blur(); }}
-      className="w-16 h-6 px-1 border border-slate-200 rounded text-[11px] text-right tabular-nums bg-white"
+      className="w-11 h-6 px-1 border border-slate-200 rounded text-[11px] text-right tabular-nums bg-white"
     />
   );
 }