merge: resolve conflict in auth_factory.rs with origin/main

Keep custom Result type alias (replacing anyhow) from main while
preserving our removal of unused TokenServicePort import.

https://claude.ai/code/session_01EbAFEfyJNLRmJHmmYDX3Tt

src/infrastructure/auth_factory.rs

@@ -1,7 +1,8 @@
-use anyhow::Result;
 use sqlx::PgPool;
 use std::sync::Arc;
 
+type Result<T> = std::result::Result<T, Box<dyn std::error::Error + Send + Sync>>;
+
 use crate::application::services::auth_application_service::AuthApplicationService;
 use crate::application::services::folder_service::FolderService;
 use crate::common::config::AppConfig;