feat: 대시보드 최근 가입자 테이블에 카카오 뱃지 추가

backend/templates/admin.html

@@ -478,7 +478,14 @@
                         {% for user in recent_users %}
                         <tr style="cursor: pointer;" onclick="showUserDetail({{ user.id }})">
                             <td>{{ user.id }}</td>
-                            <td style="color: #6366f1; font-weight: 600;">{{ user.nickname }}</td>
+                            <td style="color: #6366f1; font-weight: 600;">
+                                {{ user.nickname }}
+                                {% if user.nickname != '고객' %}
+                                <span style="display: inline-flex; align-items: center; gap: 2px; background: #FEE500; color: #3C1E1E; font-size: 10px; font-weight: 700; padding: 2px 6px; border-radius: 8px; margin-left: 4px;">💬</span>
+                                {% else %}
+                                <span style="display: inline-flex; align-items: center; background: #e9ecef; color: #868e96; font-size: 10px; font-weight: 600; padding: 2px 6px; border-radius: 8px; margin-left: 4px;">미인증</span>
+                                {% endif %}
+                            </td>
                             <td class="phone-masked">{{ user.phone[:3] }}-{{ user.phone[3:7] }}-{{ user.phone[7:] if user.phone|length > 7 else '' }}</td>
                             <td class="points-positive">{{ "{:,}".format(user.mileage_balance) }}P</td>
                             <td>{{ user.created_at[:16].replace('T', ' ') }}</td>