Expand CVE PoC coverage and metadata

.github/workflows/sync_exploits.yml

@@ -24,14 +24,19 @@ jobs:
         with:
           python-version: '3.13'
 
-      - name: Pull ExploitDB and Metasploit into the index
+      - name: Pull ExploitDB, Metasploit and Vulhub into the index
         run: python3 scripts/sync_exploits.py
 
+      - name: Verify the generated index
+        run: |
+          python3 -m unittest discover -s tests
+          python3 scripts/build_site.py
+
       - name: Check for changes and commit
         run: |
           git config user.name 'CVE-BOT'
           git config user.email '[email protected]'
-          git add -u
+          git add --all -- index/cve_dates.json index/cve_record_state.json cves/
           
           if git diff --cached --quiet; then
             echo "No changes to commit"