fix: remove standalone output mode to match PM2 next-start deploy

next.config.ts set output:standalone but ecosystem.config.js/deploy-213.sh
run next start against the full checkout, which next start does not
support in standalone mode (warns and skips the standalone server
entrypoint). Also syncs package-lock.json version field to package.json
(0.1.0 -> 0.5.0), which had drifted out of sync.

app/next.config.ts

@@ -1,7 +1,5 @@
 import type { NextConfig } from 'next'
 
-const config: NextConfig = {
-  output: 'standalone',
-}
+const config: NextConfig = {}
 
 export default config

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@shieldx/core",
-  "version": "0.1.0",
+  "version": "0.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@shieldx/core",
-      "version": "0.1.0",
+      "version": "0.5.0",
       "license": "Apache-2.0",
       "dependencies": {
         "pg": "^8.13.0",