diff --git a/.github/workflows/dev-branch.yml b/.github/workflows/dev-branch.yml
new file mode 100644
index 0000000..4373b9f
--- /dev/null
+++ b/.github/workflows/dev-branch.yml
@@ -0,0 +1,22 @@
+on:
+  pull_request:
+    branches:
+      - dev
+    paths:
+      - "server/**"
+
+jobs:
+  server-format-check:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: server
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24
+          cache: 'npm'
+          cache-dependency-path: server/package-lock.json
+      - run: npm install
+      - run: npm run format:write
diff --git a/.gitignore b/.gitignore
index 821c19d..a46ae92 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-.github
\ No newline at end of file
+# .github
\ No newline at end of file