diff --git a/.forge/iss-d65d495e8095-attempt-1.md b/.forge/iss-d65d495e8095-attempt-1.md
deleted file mode 100644
index 6a47dce..0000000
--- a/.forge/iss-d65d495e8095-attempt-1.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# iss-d65d495e8095-attempt-1
-
-Forge 이슈 작업 브랜치 `forge/iss-d65d495e8095-attempt-1`.
diff --git a/docs/architecture/transaction-sequence.md b/docs/architecture/transaction-sequence.md
deleted file mode 100644
index 2c2686e..0000000
--- a/docs/architecture/transaction-sequence.md
+++ /dev/null
@@ -1,28 +0,0 @@
-sequenceDiagram
-    participant User as User
-    participant PaymentGateway as Payment Gateway
-    participant PaymentService as Payment Service
-    participant Database as Database
-
-    User->>PaymentService: 요청(결제)
-    PaymentService->>PaymentGateway: 결제 요청
-    alt 정상 케이스
-        PaymentGateway-->>PaymentService: 결제 성공
-        PaymentService->>Database: DB에 거래 내역 저장
-        Database-->>PaymentService: 저장 성공
-        PaymentService-->>User: 결제 완료
-    else 외부 실패
-        PaymentGateway-->>PaymentService: 결제 실패
-        PaymentService-->>User: 결제 실패 메시지 전송
-    else DB 실패
-        PaymentGateway-->>PaymentService: 결제 성공
-        PaymentService->>Database: DB에 거래 내역 저장
-        Database-->>PaymentService: 저장 실패
-        PaymentService-->>User: 결제 실패 메시지 전송
-    end
-
-    %% Commit과 Rollback 경계
-    PaymentService->>Database: COMMIT (정상 흐름)
-    Database-->>PaymentService: COMMIT 성공
-    PaymentService->>Database: ROLLBACK (오류 발생 시)
-    Database-->>PaymentService: ROLLBACK 완료