refactor: optimised UI and UX

- add tag style to status;
- add button style to action links of each domain;
- add Notiflix for better notification experiences

package.json

@@ -15,6 +15,7 @@
     "@prisma/client": "^7.10.0",
     "dayjs": "^1.11.23",
     "next": "16.4.0",
+    "notiflix": "^3.2.8",
     "react": "19.3.0",
     "react-dom": "19.3.0"
   },