fix : 코드 분석 후 버그 및 결함 16건 수정

- ARepository 전체 메서드 IDbConnection using 추가 (커넥션 풀 누수)
- GameServer NotImplementedException → 로그 출력으로 변경
- ServerBase Auth/Echo payload 길이 검증 주석 해제
- PacketSerializer MemoryStream using 추가 (양쪽 솔루션)
- PacketSerializer size 파라미터 제거, 자동 계산 + size 검증 구현
- ServerBase NetDataWriter cachedWriter 재사용 (GC 압력 감소)
- ServerBase isListening volatile 추가
- ServerBase Deserialize 실패 시 null payload 체크
- ServerBase Serilog 구조적 로깅 템플릿 구문 수정
- TestHandler 전체 메서드 try-catch 추가
- TestRepository IDbConnectionFactory 인터페이스로 변경
- DummyClients BodyLength 계산 불일치 수정
- DummyClients pendingPings 메모리 누수 방지
- EchoClientTester async void 이벤트 → 동기 Cancel()로 변경
- ANALYSIS.md 코드 분석 및 문제점 보고서 추가

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

MMOTestServer/MMOserver/RDB/Handlers/TestHandlers.cs

@@ -12,37 +12,79 @@ public class TestHandler
 
     public async Task<string> GetTestAsync(int id)
     {
-        Test? result = await _testService.GetTestAsync(id);
-        return result is null
-            ? HandlerHelper.Error("Test not found")
-            : HandlerHelper.Success(result);
+        try
+        {
+            Test? result = await _testService.GetTestAsync(id);
+            return result is null
+                ? HandlerHelper.Error("Test not found")
+                : HandlerHelper.Success(result);
+        }
+        catch (Exception ex)
+        {
+            return HandlerHelper.Error(ex.Message);
+        }
     }
 
     public async Task<string> GetTestByUuidAsync(string uuid)
     {
-        Test? result = await _testService.GetTestByUuidAsync(uuid);
-        return result is null
-            ? HandlerHelper.Error("Test not found")
-            : HandlerHelper.Success(result);
+        try
+        {
+            Test? result = await _testService.GetTestByUuidAsync(uuid);
+            return result is null
+                ? HandlerHelper.Error("Test not found")
+                : HandlerHelper.Success(result);
+        }
+        catch (Exception ex)
+        {
+            return HandlerHelper.Error(ex.Message);
+        }
     }
 
     public async Task<string> GetAllTestsAsync()
     {
-        return HandlerHelper.Success(await _testService.GetAllTestsAsync());
+        try
+        {
+            return HandlerHelper.Success(await _testService.GetAllTestsAsync());
+        }
+        catch (Exception ex)
+        {
+            return HandlerHelper.Error(ex.Message);
+        }
     }
 
     public async Task<string> CreateTestAsync(int testA, string testB, double testC)
     {
-        return HandlerHelper.Success(await _testService.CreateTestAsync(testA, testB, testC));
+        try
+        {
+            return HandlerHelper.Success(await _testService.CreateTestAsync(testA, testB, testC));
+        }
+        catch (Exception ex)
+        {
+            return HandlerHelper.Error(ex.Message);
+        }
     }
 
     public async Task<string> UpdateTestAsync(int id, int? testA, string? testB, double? testC)
     {
-        return HandlerHelper.Success(await _testService.UpdateTestAsync(id, testA, testB, testC));
+        try
+        {
+            return HandlerHelper.Success(await _testService.UpdateTestAsync(id, testA, testB, testC));
+        }
+        catch (Exception ex)
+        {
+            return HandlerHelper.Error(ex.Message);
+        }
     }
 
     public async Task<string> DeleteTestAsync(int id)
     {
-        return HandlerHelper.Success(await _testService.DeleteTestAsync(id));
+        try
+        {
+            return HandlerHelper.Success(await _testService.DeleteTestAsync(id));
+        }
+        catch (Exception ex)
+        {
+            return HandlerHelper.Error(ex.Message);
+        }
     }
 }

MMOTestServer/MMOserver/RDB/Repositories/TestRepository.cs

@@ -7,7 +7,7 @@ namespace MMOserver.RDB.Repositories;
 // 실제 호출할 쿼리들
 public class TestRepository : ARepository<Test>
 {
-    public TestRepository(DbConnectionFactory factory) : base(factory)
+    public TestRepository(IDbConnectionFactory factory) : base(factory)
     {
     }