link admin avatars by email-backed auth users

src/admin-auth/admin-auth.service.ts

@@ -254,13 +254,22 @@ export class AdminAuthService {
       throw new UnauthorizedException('관리자 세션이 유효하지 않습니다.');
     }
 
-    const user = await this.authPrisma.user.findUnique({
+    let user = await this.authPrisma.user.findUnique({
       where: { email: admin.email },
       select: { id: true },
     });
 
     if (!user) {
-      throw new NotFoundException('프로필 이미지와 연결할 사용자 계정을 찾을 수 없습니다.');
+      user = await this.authPrisma.user.create({
+        data: {
+          email: admin.email,
+          passwordHash: hashPassword(randomBytes(24).toString('hex')),
+          name: admin.name,
+          role: 'ADMIN',
+          isActive: true,
+        },
+        select: { id: true },
+      });
     }
 
     return { admin, user };