added zustand for state managing

client/package-lock.json

@@ -11,7 +11,8 @@
         "@carbon/icons-react": "^11.53.0",
         "next": "15.1.3",
         "react": "^19.0.0",
-        "react-dom": "^19.0.0"
+        "react-dom": "^19.0.0",
+        "zustand": "^5.0.2"
       },
       "devDependencies": {
         "@eslint/eslintrc": "^3",
@@ -976,7 +977,7 @@
       "version": "19.0.2",
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.0.2.tgz",
       "integrity": "sha512-USU8ZI/xyKJwFTpjSVIrSeHBVAGagkHQKPNbxeWwql/vDmnTIBgx+TJnhFnj1NXgz8XfprU0egV2dROLGpsBEg==",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "dependencies": {
         "csstype": "^3.0.2"
@@ -1842,7 +1843,7 @@
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.1.3.tgz",
       "integrity": "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT"
     },
     "node_modules/damerau-levenshtein": {
@@ -6016,6 +6017,35 @@
       "funding": {
         "url": "https://github.com/sponsors/sindresorhus"
       }
+    },
+    "node_modules/zustand": {
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/zustand/-/zustand-5.0.2.tgz",
+      "integrity": "sha512-8qNdnJVJlHlrKXi50LDqqUNmUbuBjoKLrYQBnoChIbVph7vni+sY+YpvdjXG9YLd/Bxr6scMcR+rm5H3aSqPaw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.20.0"
+      },
+      "peerDependencies": {
+        "@types/react": ">=18.0.0",
+        "immer": ">=9.0.6",
+        "react": ">=18.0.0",
+        "use-sync-external-store": ">=1.2.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        },
+        "immer": {
+          "optional": true
+        },
+        "react": {
+          "optional": true
+        },
+        "use-sync-external-store": {
+          "optional": true
+        }
+      }
     }
   }
 }