Fix null bu_teams in postgres migration, add retry logic to deploy script

scripts/deploy-postgres.sh

@@ -88,7 +88,16 @@ echo "✓ Dependencies installed"
 echo ""
 echo "── Step 5: Running data migration (SQLite → Postgres) ──"
 if [ -f backend/cve_database.db ]; then
-    node backend/scripts/migrate-to-postgres.js
+    if ! node backend/scripts/migrate-to-postgres.js; then
+        echo ""
+        echo "⚠ Migration failed — resetting database and retrying..."
+        PGPASSWORD=sV4xmC9xAUCFop0ypxMVS056QgPqGrX psql -h localhost -p 5433 -U steam -d cve_dashboard -c "
+DROP SCHEMA public CASCADE;
+CREATE SCHEMA public;
+" >/dev/null 2>&1
+        echo "✓ Schema reset"
+        node backend/scripts/migrate-to-postgres.js
+    fi
 else
     echo "⚠ No SQLite database found — skipping migration (fresh install)"
 fi