fix: resolve all clippy warnings and convert integration_tests to custom cfg

- Add type aliases (FileRow, FolderRow, FolderRowPaginated, FolderRowOptUser) to reduce type complexity
- Simplify redundant closures in app_password_handler and webdav_handler
- Remove needless borrow in auth_handler
- Collapse nested if/let chains in login_lockout, webdav_lock, auth, rate_limit
- Box LockEntry in acquire() Err variant to fix large enum variant warning
- Rename DeviceCodeStatus::from_str to parse to avoid should_implement_trait lint
- Add #[allow(clippy::too_many_arguments)] and #[allow(clippy::result_unit_err)] where appropriate
- Convert integration_tests from cargo feature to custom cfg attribute
- Add check-cfg lint config in Cargo.toml for integration_tests cfg

src/application/services/app_password_service.rs

@@ -9,13 +9,13 @@ use crate::application::ports::auth_ports::{
 };
 use crate::common::errors::DomainError;
 use crate::domain::entities::app_password::AppPassword;
+use crate::infrastructure::repositories::pg::AppPasswordPgRepository;
+use crate::infrastructure::repositories::pg::UserPgRepository;
+use crate::infrastructure::services::password_hasher::Argon2PasswordHasher;
 use chrono::{Duration, Utc};
 use moka::future::Cache;
 use std::sync::Arc;
 use std::time::Duration as StdDuration;
-use crate::infrastructure::repositories::pg::AppPasswordPgRepository;
-use crate::infrastructure::services::password_hasher::Argon2PasswordHasher;
-use crate::infrastructure::repositories::pg::UserPgRepository;
 
 /// App password token length (32 random alphanumeric chars after prefix).
 const TOKEN_LENGTH: usize = 32;