ui: fix build for Node 17+ / OpenSSL 3 and raise heap to 4 GB

webpack 4 uses the MD4 hash algorithm which OpenSSL 3 (Node 17+) no
longer provides by default, causing ERR_OSSL_EVP_UNSUPPORTED.

NODE_OPTIONS is used (rather than a direct node flag) so the setting is
inherited by all child processes that webpack spawns during the build.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Daan Hoogland

ui/package.json

@@ -25,9 +25,9 @@
   },
   "scripts": {
     "prebuild": "./prebuild.sh",
-    "start": "vue-cli-service lint --no-fix && vue-cli-service serve",
-    "serve": "vue-cli-service lint --no-fix && vue-cli-service serve",
-    "build": "vue-cli-service build",
+    "start": "NODE_OPTIONS='--openssl-legacy-provider' vue-cli-service lint --no-fix && NODE_OPTIONS='--openssl-legacy-provider' vue-cli-service serve",
+    "serve": "NODE_OPTIONS='--openssl-legacy-provider' vue-cli-service lint --no-fix && NODE_OPTIONS='--openssl-legacy-provider' vue-cli-service serve",
+    "build": "NODE_OPTIONS='--max-old-space-size=4096 --openssl-legacy-provider' vue-cli-service build",
     "postbuild": "./postbuild.sh",
     "lint": "vue-cli-service lint",
     "i18n:report": "vue-cli-service i18n:report --src './src/**/*.?(js|vue)' --locales './src/locales/**/*.json'",