Fixes and adjustments to demo

package.json

@@ -5,10 +5,12 @@
   "scripts": {},
   "private": true,
   "dependencies": {
+    "@angular/cdk": "^21.2.4",
     "@angular/common": "~21.2.0",
     "@angular/compiler": "~21.2.0",
     "@angular/core": "~21.2.0",
     "@angular/forms": "~21.2.0",
+    "@angular/material": "^21.2.4",
     "@angular/platform-browser": "~21.2.0",
     "@angular/router": "~21.2.0",
     "@nestjs/common": "^11.0.0",
@@ -17,7 +19,6 @@
     "@prisma/adapter-pg": "^7.5.0",
     "@prisma/client": "^7.5.0",
     "axios": "^1.6.0",
-    "pg": "^8.20.0",
     "reflect-metadata": "^0.1.13",
     "rxjs": "~7.8.0"
   },
@@ -34,6 +35,7 @@
     "@nx/angular": "22.6.1",
     "@nx/eslint": "22.6.1",
     "@nx/eslint-plugin": "22.6.1",
+    "@nx/jest": "22.6.1",
     "@nx/js": "22.6.1",
     "@nx/nest": "^22.6.1",
     "@nx/node": "22.6.1",
@@ -44,17 +46,25 @@
     "@swc-node/register": "~1.11.1",
     "@swc/core": "~1.15.5",
     "@swc/helpers": "~0.5.18",
+    "@types/jest": "^30.0.0",
     "@types/node": "20.19.9",
     "@typescript-eslint/utils": "^8.40.0",
     "angular-eslint": "^21.2.0",
     "dotenv": "^17.3.1",
     "eslint": "^9.8.0",
     "eslint-config-prettier": "^10.0.0",
+    "jest": "^30.0.2",
+    "jest-environment-node": "^30.0.2",
+    "jest-util": "^30.0.2",
     "jsdom": "^27.1.0",
+    "jsonc-eslint-parser": "^2.1.0",
     "nx": "22.6.1",
     "prettier": "~3.6.2",
     "prisma": "^7.5.0",
+    "ts-jest": "^29.4.0",
+    "ts-node": "10.9.1",
     "tslib": "^2.3.0",
+    "tsx": "^4.21.0",
     "typescript": "~5.9.2",
     "typescript-eslint": "^8.40.0",
     "vitest": "^4.0.8",