diff --git a/.forge/iss-3f29c0d83954-attempt-1-run-62fa40d5b77b.md b/.forge/iss-3f29c0d83954-attempt-1-run-62fa40d5b77b.md
deleted file mode 100644
index 7d13ace..0000000
--- a/.forge/iss-3f29c0d83954-attempt-1-run-62fa40d5b77b.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# iss-3f29c0d83954-attempt-1-run-62fa40d5b77b
-
-Forge 이슈 작업 브랜치 `forge/iss-3f29c0d83954-attempt-1-run-62fa40d5b77b`.
diff --git a/.forge/iss-bae72bbf49e3-attempt-1-run-8e05b5645c4a.md b/.forge/iss-bae72bbf49e3-attempt-1-run-8e05b5645c4a.md
new file mode 100644
index 0000000..05618dc
--- /dev/null
+++ b/.forge/iss-bae72bbf49e3-attempt-1-run-8e05b5645c4a.md
@@ -0,0 +1,3 @@
+# iss-bae72bbf49e3-attempt-1-run-8e05b5645c4a
+
+Forge 이슈 작업 브랜치 `forge/iss-bae72bbf49e3-attempt-1-run-8e05b5645c4a`.
diff --git a/docs/architecture/package-map.md b/docs/architecture/package-map.md
deleted file mode 100644
index 22e621a..0000000
--- a/docs/architecture/package-map.md
+++ /dev/null
@@ -1,10 +0,0 @@
-# 패키지 맵
-
-| 패키지         | 책임                                           | 금지 의존성       |
-|----------------|----------------------------------------------|------------------|
-| controller      | 외부 요청 수신 및 처리                       | repository        |
-| service         | 비즈니스 로직 수행 및 데이터 처리           | integration       |
-| repository      | 데이터 저장소와의 상호작용                 | controller, domain |
-| domain          | 핵심 비즈니스 도메인 모델                  | integration       |
-| integration     | 외부 서비스와의 통신                       | controller, domain | 
-
diff --git a/docs/architecture/transaction-sequence.md b/docs/architecture/transaction-sequence.md
new file mode 100644
index 0000000..c6067ff
--- /dev/null
+++ b/docs/architecture/transaction-sequence.md
@@ -0,0 +1,23 @@
+```mermaid
+sequenceDiagram
+    participant User
+    participant PaymentGateway
+    participant TransactionDB
+    User->>PaymentGateway: Initiate Payment
+    alt Successful Payment
+        PaymentGateway-->>TransactionDB: Store Transaction
+        TransactionDB-->>PaymentGateway: Confirm Transaction Stored
+        PaymentGateway-->>User: Payment Successful
+    else External Failure
+        PaymentGateway-->>User: Payment Gateway Error
+    else DB Failure
+        PaymentGateway-->>User: Payment Processing Error
+        TransactionDB-->>PaymentGateway: DB Error Occurred
+    end
+    opt Commit Transaction
+        TransactionDB-->>User: Commit Success
+    end
+    opt Rollback Transaction
+        TransactionDB-->>User: Rollback Success
+    end
+```
\ No newline at end of file