Use npm tarball for packaging validation

Author: wwb1942

.github/workflows/validate.yml

@@ -37,16 +37,18 @@ jobs:
             python3 openclaw-fullstack-dev/scripts/verify_starter_template.py "$template" "$dest"
           done
 
-      - name: Fetch packaging scripts from OpenClaw source
+      - name: Download OpenClaw npm package for packaging script
         run: |
-          set -euo pipefail
-          BASE_URL="https://raw.githubusercontent.com/openclaw/openclaw/main/skills/skill-creator/scripts"
-          curl -fsSL "$BASE_URL/package_skill.py" -o /tmp/package_skill.py
-          curl -fsSL "$BASE_URL/quick_validate.py" -o /tmp/quick_validate.py
+          cd /tmp
+          npm pack openclaw --silent
+          rm -rf /tmp/openclaw-npm
+          mkdir -p /tmp/openclaw-npm
+          tar -xzf /tmp/openclaw-*.tgz -C /tmp/openclaw-npm
+          test -f /tmp/openclaw-npm/package/skills/skill-creator/scripts/package_skill.py
 
       - name: Package distributable skill
         run: |
-          PYTHONPATH=/tmp python3 /tmp/package_skill.py ./openclaw-fullstack-dev ./dist
+          python3 /tmp/openclaw-npm/package/skills/skill-creator/scripts/package_skill.py ./openclaw-fullstack-dev ./dist
           test -f ./dist/openclaw-fullstack-dev.skill
 
   starter-smoke: