From ebf4cef42f5f31ffb0204b27e7dc2cac303bb761 Mon Sep 17 00:00:00 2001
From: forge-bot <bot@forge.local>
Date: Sun, 12 Jul 2026 04:41:13 +0000
Subject: [PATCH 1/2] forge: open work branch for iss-155aa95ea6df-attempt-1

---
 .forge/iss-155aa95ea6df-attempt-1.md | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 .forge/iss-155aa95ea6df-attempt-1.md

diff --git a/.forge/iss-155aa95ea6df-attempt-1.md b/.forge/iss-155aa95ea6df-attempt-1.md
new file mode 100644
index 0000000..8eb76f5
--- /dev/null
+++ b/.forge/iss-155aa95ea6df-attempt-1.md
@@ -0,0 +1,3 @@
+# iss-155aa95ea6df-attempt-1
+
+Forge 이슈 작업 브랜치 `forge/iss-155aa95ea6df-attempt-1`.
-- 
2.49.1


From 71e25467e37c328e21403f0e294969c9301e969a Mon Sep 17 00:00:00 2001
From: forge-bot <bot@forge.local>
Date: Sun, 12 Jul 2026 04:41:19 +0000
Subject: [PATCH 2/2] =?UTF-8?q?=EA=B2=B0=EC=A0=9C=20=EC=A0=84=ED=99=98=20?=
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 =?UTF-8?q?=EC=A0=95=EC=9D=98=20(2/2)=20(iss-155aa95ea6df)?=
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

---
 docs/architecture/transaction-sequence.md | 25 +++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 docs/architecture/transaction-sequence.md

diff --git a/docs/architecture/transaction-sequence.md b/docs/architecture/transaction-sequence.md
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+```mermaid
+sequenceDiagram
+    participant User
+    participant PaymentGateway
+    participant Bank
+
+    %% Normal flow
+    User ->> PaymentGateway: Request Payment
+    PaymentGateway ->> Bank: Process Payment
+    Bank -->> PaymentGateway: Payment Approved
+    PaymentGateway -->> User: Payment Confirmation
+
+    %% External failure branch
+    User ->> PaymentGateway: Request Payment
+    PaymentGateway ->> Bank: Process Payment
+    Bank -->> PaymentGateway: Payment Declined
+    PaymentGateway -->> User: Payment Declined Message
+
+    %% DB failure branch
+    User ->> PaymentGateway: Request Payment
+    PaymentGateway ->> Bank: Process Payment
+    Bank -->> PaymentGateway: DB Error
+    PaymentGateway -->> User: Payment Failed Due to Error
+    Note over PaymentGateway: Rollback transaction if needed
+```
\ No newline at end of file
-- 
2.49.1