chore(core): finish installation and theming

package.json

@@ -29,7 +29,8 @@
     "@angular/platform-browser": "^20.2.0",
     "@angular/router": "^20.2.0",
     "@primeuix/themes": "^1.2.3",
-    "@tailwindcss/vite": "^4.1.12",
+    "@tailwindcss/postcss": "^4.1.12",
+    "postcss": "^8.5.6",
     "primeng": "^20.0.1",
     "rxjs": "~7.8.0",
     "tailwindcss": "^4.1.12",