feat(ops): 배포 알림과 텔레그램 리포트 추가

TaxBaik.Infrastructure/Repositories/ClientRepository.cs

@@ -40,6 +40,33 @@ public class ClientRepository(IDbConnectionFactory connectionFactory) : BaseRepo
             new { Id = id });
     }
 
+    public async Task<Client?> GetByEmailAsync(string email, CancellationToken ct = default)
+    {
+        using var conn = Conn();
+        return await conn.QueryFirstOrDefaultAsync<Client>(
+            $"SELECT {SelectColumns} FROM clients WHERE email = @Email",
+            new { Email = email });
+    }
+
+    public async Task<Client?> GetByPhoneAsync(string phone, CancellationToken ct = default)
+    {
+        using var conn = Conn();
+        return await conn.QueryFirstOrDefaultAsync<Client>(
+            $"SELECT {SelectColumns} FROM clients WHERE phone = @Phone",
+            new { Phone = phone });
+    }
+
+    public async Task<int> CountByCreatedAtRangeAsync(DateTime startDateUtc, DateTime endDateUtc, CancellationToken ct = default)
+    {
+        using var conn = Conn();
+        return await conn.ExecuteScalarAsync<int>(
+            @"SELECT COUNT(*)
+              FROM clients
+              WHERE created_at >= @StartDateUtc
+                AND created_at <= @EndDateUtc",
+            new { StartDateUtc = startDateUtc, EndDateUtc = endDateUtc });
+    }
+
     public async Task<int> CreateAsync(Client client, CancellationToken ct = default)
     {
         using var conn = Conn();