feat: 대시보드 모달에 관심상품 탭 추가

- /admin/user/<id> API에 interests 필드 추가
- ai_recommendations 테이블에서 status='interested' 조회
- 모달에 💝 관심 탭 추가
- 트리거 상품, 추천 이유 표시

backend/app.py

@@ -1448,7 +1448,27 @@ def admin_user_detail(user_id):
             except Exception as rx_error:
                 logging.warning(f"조제 이력 조회 실패 (user {user_id}): {rx_error}")
 
-        # 7. 응답 생성
+        # 7. 관심상품 조회 (AI 추천에서 '관심있어요' 누른 상품)
+        interests = []
+        try:
+            cursor.execute("""
+                SELECT recommended_product, recommendation_reason, trigger_products, created_at
+                FROM ai_recommendations
+                WHERE user_id = ? AND status = 'interested'
+                ORDER BY created_at DESC
+                LIMIT 20
+            """, (user_id,))
+            for row in cursor.fetchall():
+                interests.append({
+                    'product': row['recommended_product'],
+                    'reason': row['recommendation_reason'],
+                    'trigger_products': row['trigger_products'],
+                    'created_at': utc_to_kst_str(row['created_at'])
+                })
+        except Exception as interest_error:
+            logging.warning(f"관심상품 조회 실패 (user {user_id}): {interest_error}")
+
+        # 8. 응답 생성
         return jsonify({
             'success': True,
             'user': {
@@ -1472,7 +1492,8 @@ def admin_user_detail(user_id):
             ],
             'purchases': purchases,
             'prescriptions': prescriptions,
-            'pos_customer': pos_customer
+            'pos_customer': pos_customer,
+            'interests': interests
         })
 
     except Exception as e: