diff --git a/.forge/iss-c7e589ce4a08-attempt-1.md b/.forge/iss-c7e589ce4a08-attempt-1.md
deleted file mode 100644
index 60ad91f..0000000
--- a/.forge/iss-c7e589ce4a08-attempt-1.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# iss-c7e589ce4a08-attempt-1
-
-Forge 이슈 작업 브랜치 `forge/iss-c7e589ce4a08-attempt-1`.
diff --git a/docs/architecture/transaction-sequence.md b/docs/architecture/transaction-sequence.md
deleted file mode 100644
index 0273b19..0000000
--- a/docs/architecture/transaction-sequence.md
+++ /dev/null
@@ -1,25 +0,0 @@
-sequenceDiagram
-    participant User
-    participant Payment Gateway
-    participant Database
-    participant Service
-
-    User->>Service: Initiate Payment
-    Service->>Payment Gateway: Send Payment Request
-    alt Successful Payment
-        Payment Gateway-->>Service: Confirm Payment
-        Service->>Database: Record Payment
-        Database-->>Service: Payment Recorded
-        Service-->>User: Payment Success
-    else External Payment Failed
-        Payment Gateway-->>Service: Payment Failed
-        Service-->>User: Payment Failed
-    else Database Failure
-        Service->>Database: Attempt to Record Payment
-        Database-->>Service: Database Error
-        Service-->>User: Unable to process payment
-    end
-    Service->>Database: Commit
-    alt Rollback Required
-        Database->>Database: Rollback Changes
-    end
\ No newline at end of file