Restore missing runtime dependencies for local startup

[TienNguyen3711]

Summary

• restore missing runtime dependencies required for the API server to boot locally
• add the packages needed by runtime imports that were causing MODULE_NOT_FOUND failures during npm start
• unblock local API startup so routes such as forgot-password can be exercised end to end

What file changed

• package.json

  • added missing runtime dependencies: base64-arraybuffer and fs-extra

• package-lock.json

  • updated the lockfile to capture the resolved dependency tree for the added runtime packages