added stop start files and testing multivendor support

stop-servers.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+echo "Stopping CVE Dashboard servers..."
+
+if [ -f backend.pid ]; then
+    kill $(cat backend.pid) 2>/dev/null
+    rm backend.pid
+    echo "✓ Backend stopped"
+fi
+
+if [ -f frontend.pid ]; then
+    kill $(cat frontend.pid) 2>/dev/null
+    rm frontend.pid
+    echo "✓ Frontend stopped"
+fi
+
+pkill -f "node server.js"
+pkill -f "react-scripts start"
+echo "All servers stopped"