chore: run actions when .github/workflows changes, and set up pnpm

Author: walker84837

.github/workflows/page.yml

@@ -5,6 +5,7 @@ on:
     branches:
       - main
     paths:
+      - ".github/workflows/**"
       - ".gitignore"
       - "src/**"
       - "package*.json"
@@ -18,6 +19,11 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10
+
       - name: Setup Node.js
         uses: actions/setup-node@v6
         with: