🐳 chore(sync workflow): 自动从上游同步变更

Author: gongfuture

.github/workflows/sync-upstream.yml

@@ -0,0 +1,35 @@
+name: Sync upstream
+
+on:
+  schedule:
+    - cron: '0 2 * * *' # 每天凌晨2点自动运行
+  workflow_dispatch:    # 支持手动触发
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout up-sync branch
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          fetch-depth: 0
+          ref: up-sync
+
+      - name: Add upstream remote
+        run: git remote add upstream https://github.com/ddnet/ddnet-maps
+
+      - name: Fetch upstream
+        run: git fetch upstream
+
+      - name: Hard reset up-sync to upstream/master
+        run: |
+          git reset --hard upstream/master
+
+      - name: Push to origin up-sync branch (force)
+        run: |
+          git push origin up-sync --force
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}