refactor(justfile): de-dup deploy-code, move nginx/setup to deploy-nginx

scripts/deploy-server.sh

@@ -121,6 +121,12 @@ chown www-data:xamxam /var/backups/xamxam
 chmod 2775 /var/backups/xamxam
 ok "Backup dir: /var/backups/xamxam owned by www-data:xamxam (2775)"
 
+# App var/ dirs (cache/logs/tmp) checked by deploy-verify-permissions.
+mkdir -p /var/www/xamxam/var/{cache,logs,tmp}
+chown -R www-data:xamxam /var/www/xamxam/var
+chmod -R 2775 /var/www/xamxam/var
+ok "var/ dirs: /var/www/xamxam/var/{cache,logs,tmp}"
+
 # ── Step 2: Nginx config ──────────────────────────────────────────────────────
 printf "\n📋 Step 2: Deploying nginx configuration...\n"
 echo "--------------------------------------------"