Document valid role names for set-role command

CHANGELOG.md

@@ -11,6 +11,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Added `fep-e232` feature flag (disabled by default).
 - Added `account_index` parameter to Monero configuration.
 
+### Changed
+
+- Documented valid role names for `set-role` command.
+
 ### Fixed
 
 - Make webclient-to-object redirects work for remote profiles and posts.

docs/mitractl.md

@@ -38,7 +38,7 @@ Set or change password:
 mitractl set-password <user-id> <password>
 ```
 
-Change user's role:
+Change user's role (admin, user or read_only_user).
 
 ```shell
 mitractl set-role <user-id> <role-name>

mitra-cli/src/cli.rs

@@ -187,6 +187,7 @@ impl SetPassword {
 #[derive(Parser)]
 pub struct SetRole {
     id: Uuid,
+    #[clap(value_parser = ["admin", "user", "read_only_user"])]
     role: String,
 }