Introduce the market-state ledger (one doc per tradeable resource/asset), GM baseline fields on Assets/Resources, global economy knobs on Game Rules, market-state RBAC permissions, and the market-state event target option.
Ultraworked with [Sisyphus](https://github.com/code-yeongju/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Introduce a dynamic RBAC system with a new 'roles' collection that grants
granular permissions. Add hasPermission/requirePermission/loadUserPermissions
utilities and a central permissions registry. Register the Roles collection in
payload.config and add roleDocs relationship to Users.
