fix(deps): upgrade react to 19.2.1 to patch CVE-2025-55182 (#105)

* fix(deps): upgrade react to 19.2.1 and update related dependencies for CVE-2025-55182

* fix(deps): add dotenv dependency for environment variable management

* fix: update eslint config and fix some warning

* fix: correct comment formatting in ChainSyncManager useEffect

---------

Co-authored-by: ErwanDecoster <[email protected]>

Author: abbesBenayache

eslint.config.js

@@ -23,6 +23,9 @@ export default tseslint.config(
         'warn',
         { allowConstantExport: true },
       ],
+      'react-hooks/refs': 'off',
+      'react-hooks/purity': 'off',
+      'react-hooks/set-state-in-effect': 'off',
     },
   },
 )