feat: better admin permissions (#5755)

* feat: add casbin admin permissions

* feat: improve audit logging to associate logs with actual operators and target users

* feat: enhance admin permissions and UI interactions for sensitive actions

* Refactor authz RBAC and tighten channel permissions

* Split channel authz field policy

* Address channel authz review findings

model/main.go

@@ -297,6 +297,8 @@ func migrateDB() error {
 		&SystemInstance{},
 		&SystemTask{},
 		&SystemTaskLock{},
+		&CasbinRule{},
+		&AuthzRole{},
 	)
 	if err != nil {
 		return err