refactor(api): reorder imports and update code formatting across repository endpoints

- Reordered actix-web imports to standardize import order
- Reordered crate module imports to follow alphabetical ordering
- Updated function calls to use multi-line formatting for better readability
- Standardized blank lines around documentation comments
- Applied consistent formatting to response handling methods
- Normalized import organization across all repository-related API files
- Improved code consistency and maintainability through standardized formatting
- Applied formatting updates to all repository endpoint implementations

api/repo/accept_invitation.rs

@@ -1,8 +1,8 @@
-use actix_web::{web, HttpResponse};
+use actix_web::{HttpResponse, web};
 use serde::Deserialize;
 use utoipa::ToSchema;
 
-use crate::api::response::{ApiResponse, ApiErrorResponse};
+use crate::api::response::{ApiErrorResponse, ApiResponse};
 use crate::error::AppError;
 use crate::models::repos::RepoInvitation;
 use crate::service::AppService;
@@ -18,12 +18,12 @@ pub struct AcceptInvitationParams {
 ///
 /// Accepts a pending repository invitation using the token received via email.
 /// Requires authentication and a verified email address matching the invitation.
-/// 
+///
 /// Effects:
 /// - User is added as a repository member with the invited role
 /// - User is added to the workspace if not already a member
 /// - Invitation is marked as accepted
-/// 
+///
 /// Returns the accepted invitation with full metadata.
 #[utoipa::path(
     post,