docs(README): add screenshots and update image references - include dark and light theme screenshots for various app components - update image links in the documentation for consistency feat(package): add playwright as a dependency - include playwright for end-to-end testing capabilities

package.json

@@ -43,5 +43,8 @@
         }
       }
     ]
+  },
+  "dependencies": {
+    "playwright": "^1.58.2"
   }
 }