minor refactoring (#52)

Reviewed-on: #52
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

Cargo.lock

@@ -728,7 +728,7 @@ dependencies = [
 
 [[package]]
 name = "icarus_auth"
-version = "0.4.0"
+version = "0.4.1"
 dependencies = [
  "argon2",
  "axum",
@@ -761,9 +761,10 @@ dependencies = [
 
 [[package]]
 name = "icarus_models"
-version = "0.5.0"
-source = "git+ssh://git@git.kundeng.us/phoenix/icarus_models.git?tag=v0.5.0-devel-7958b89abc-111#7958b89abc56bc9262015b3e201ea2906cc8a9ff"
+version = "0.5.4"
+source = "git+ssh://git@git.kundeng.us/phoenix/icarus_models.git?tag=v0.5.4-devel-1e95822b5a-111#1e95822b5a349bd73cc501d921052f289105ec55"
 dependencies = [
+ "josekit",
  "rand 0.9.1",
  "serde",
  "serde_json",