New task

## 수정 내용

**CAPTCHA TOO FREQUENT 해결:**
- `redeemOne`에서 **불필요한 PLAYER API 호출 완전 제거** (각 쿠폰마다 player 호출하던 것 삭제)
- 캡차 재시도 시 **2초 딜레이** 추가
- 쿠폰 간 딜레이 **1.5초 → 3초**로 증가

**모바일 반응형:**
- 640px 이하에서 2단 컬럼 → **세로 1단** 전환
- FID 입력창 + 버튼 세로 배치
- 카드 패딩/글자 크기 모바일에 맞게 조정

back/src/wos/wos.service.ts

@@ -114,15 +114,11 @@ export class WosService {
     code: string,
     maxRetries = 5,
   ): Promise<{ success: boolean; message: string; err_code?: number }> {
-    const ts1 = this.now();
-    const playerSign = this.makePlayerSign(fid, ts1);
-    await axios.post(
-      `${WOS_API_BASE}/player`,
-      new URLSearchParams({ fid, time: String(ts1), sign: playerSign }),
-      { headers: { ...COMMON_HEADERS } },
-    );
-
     for (let attempt = 1; attempt <= maxRetries; attempt++) {
+      if (attempt > 1) {
+        await new Promise((r) => setTimeout(r, 2000));
+      }
+
       let captchaCode: string;
       try {
         captchaCode = await this.solveCaptcha(fid);
@@ -130,11 +126,11 @@ export class WosService {
         return { success: false, message: `캡차 오류: ${err.message}` };
       }
 
-      const ts2 = this.now();
-      const giftSign = this.makeGiftSign(fid, ts2, code, captchaCode);
+      const ts = this.now();
+      const giftSign = this.makeGiftSign(fid, ts, code, captchaCode);
       const response = await axios.post(
         `${WOS_API_BASE}/gift_code`,
-        new URLSearchParams({ fid, time: String(ts2), sign: giftSign, cdk: code, captcha_code: captchaCode }),
+        new URLSearchParams({ fid, time: String(ts), sign: giftSign, cdk: code, captcha_code: captchaCode }),
         { headers: { ...COMMON_HEADERS } },
       );
 
@@ -143,10 +139,7 @@ export class WosService {
 
       if (data.code === 0) return { success: true, message: SUCCESS_MSG };
       if (data.err_code === 40103) {
-        if (attempt < maxRetries) {
-          await new Promise((r) => setTimeout(r, 500));
-          continue;
-        }
+        if (attempt < maxRetries) continue;
         return { success: false, message: `캡차 인식 실패 (${maxRetries}회 시도)`, err_code: data.err_code };
       }
       return { success: false, message: data.msg || `실패 (${data.err_code})`, err_code: data.err_code };
@@ -194,7 +187,7 @@ export class WosService {
       await this.couponLogRepo.save({ fid, coupon_code: coupon.code, result_msg: result.message });
       results.push({ name: coupon.name, code: coupon.code, status, message: result.message });
 
-      await new Promise((r) => setTimeout(r, 1500));
+      await new Promise((r) => setTimeout(r, 3000));
     }
 
     return results;

front/src/views/HomeView.vue

@@ -209,4 +209,15 @@ header h1 { font-size: 1.9rem; color: #1e293b; margin: 0 0 8px; }
 .btn-primary:hover:not(:disabled) { background: #2563eb; }
 .error-msg { color: #dc2626; font-size: 0.9rem; margin: 8px 0 0; }
 .empty { color: #94a3b8; font-size: 0.9rem; margin: 0; text-align: center; padding: 12px 0; }
+
+@media (max-width: 640px) {
+  .layout { padding: 16px 12px 40px; }
+  header h1 { font-size: 1.4rem; }
+  .columns { flex-direction: column; }
+  .col-left { width: 100%; }
+  .user-list { max-height: 180px; }
+  .search-row { flex-direction: column; }
+  .search-row .btn { width: 100%; }
+  .card { padding: 14px; }
+}
 </style>