Create precheck.yml

.github/workflows/precheck.yml

@@ -0,0 +1,29 @@
+# .github/workflows/precheck.yml
+name: PR Precheck
+on: [pull_request]
+
+jobs:
+  conflict-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Check Conflicts
+        run: |
+          git fetch origin main
+          if git diff --name-only --diff-filter=U origin/main...HEAD | grep .; then
+            echo "CONFLICT=true" >> $GITHUB_ENV
+          fi
+  labeler:
+    runs-on: ubuntu-latest
+    needs: conflict-check
+    steps:
+      - uses: actions/github-script@v6
+        if: env.CONFLICT == 'true'
+        with:
+          script: |
+            github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              labels: ['🚫冲突需处理']
+            })