add group creation

bun.lock

@@ -1,5 +1,6 @@
 {
   "lockfileVersion": 1,
+  "configVersion": 0,
   "workspaces": {
     "": {
       "name": "bun-react-template",
@@ -10,7 +11,8 @@
         "@mui/icons-material": "7.3.5",
         "@mui/material": "7.3.5",
         "cookie": "^1.0.2",
-        "mobx-react-lite": "^4.1.1",
+        "mobx": "^6.15.0",
+        "mobx-react": "^9.2.1",
         "react": "19",
         "react-dom": "19",
         "react-router-dom": "^7.9.5",
@@ -538,6 +540,8 @@
 
     "mobx": ["mobx@6.15.0", "", {}, "sha512-UczzB+0nnwGotYSgllfARAqWCJ5e/skuV2K/l+Zyck/H6pJIhLXuBnz+6vn2i211o7DtbE78HQtsYEKICHGI+g=="],
 
+    "mobx-react": ["mobx-react@9.2.1", "", { "dependencies": { "mobx-react-lite": "^4.1.1" }, "peerDependencies": { "mobx": "^6.9.0", "react": "^16.8.0 || ^17 || ^18 || ^19" } }, "sha512-WJNNm0FB2n0Z0u+jS1QHmmWyV8l2WiAj8V8I/96kbUEN2YbYCoKW+hbbqKKRUBqElu0llxM7nWKehvRIkhBVJw=="],
+
     "mobx-react-lite": ["mobx-react-lite@4.1.1", "", { "dependencies": { "use-sync-external-store": "^1.4.0" }, "peerDependencies": { "mobx": "^6.9.0", "react": "^16.8.0 || ^17 || ^18 || ^19" } }, "sha512-iUxiMpsvNraCKXU+yPotsOncNNmyeS2B5DKL+TL6Tar/xm+wwNJAubJmtRSeAoYawdZqwv8Z/+5nPRHeQxTiXg=="],
 
     "ms": ["ms@2.1.3", "", {}, "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="],