Feat: CI build and commit Stain font

.github/workflows/build-font.yml

@@ -0,0 +1,41 @@
+name: Build Stain Font
+
+on:
+  push:
+    branches:
+      - master
+      - main
+
+jobs:
+  build-font:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: true
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install deps
+        run: npm ci || npm install
+
+      - name: Build font
+        run: npm run build
+
+      - name: Commit dist
+        run: |
+          if [ -n "$(git status --porcelain dist)" ]; then
+            git config user.name "github-actions[bot]"
+            git config user.email "github-actions[bot]@users.noreply.github.com"
+            git add dist
+            git commit -m "chore: build Stain font"
+            git push
+          fi