From 151eb801a30f24b388e9eae0e7fe3c6ab485e2fa Mon Sep 17 00:00:00 2001
From: Hayato Kiwata <dev@haytok.jp>
Date: Wed, 26 Aug 2026 20:12:21 +0900
Subject: [PATCH] ci: enforce go fmt ./... in CI

Signed-off-by: Hayato Kiwata <dev@haytok.jp>
---
 .github/workflows/main.yaml | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index e88834e0..b799161c 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -1,6 +1,20 @@
 name: Main
 on: [push, pull_request]
 jobs:
+  lint:
+    name: "Lint"
+    runs-on: ubuntu-24.04
+    steps:
+    - name: "Check out"
+      uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+    - name: "Set up Go"
+      uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e  # v7.0.0
+      with:
+        go-version-file: go.mod
+    - name: "go fmt"
+      run: |
+        go fmt ./...
+        git diff --exit-code
   test-unit:
     name: "Unit test"
     runs-on: ubuntu-24.04