chore: issue template and auto close (#1295)

* chore: issue tempalte and auto close

* chore: formatting issue

.github/workflows/validate-issue.yml

@@ -0,0 +1,31 @@
+name: Validate Issue
+on:
+  issues:
+    types: [opened]
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check chapter URL
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const body = context.payload.issue.body || '';
+            const hasValidUrl = body.includes('nextjs.org/learn');
+
+            if (!hasValidUrl) {
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.issue.number,
+                body: 'This issue was automatically closed because it doesn\'t reference a valid nextjs.org/learn URL.'
+              });
+              await github.rest.issues.update({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.issue.number,
+                state: 'closed',
+                state_reason: 'not_planned'
+              });
+            }