style: apply cargo fmt to entire codebase

Standardize code formatting across all 173 Rust source files
using rustfmt. No functional changes - purely cosmetic.

This establishes a consistent code style baseline for the
project going forward.

src/application/services/favorites_service.rs

@@ -1,9 +1,9 @@
-use std::sync::Arc;
-use async_trait::async_trait;
-use tracing::info;
-use crate::common::errors::{Result, DomainError, ErrorKind};
-use crate::application::ports::favorites_ports::{FavoritesUseCase, FavoritesRepositoryPort};
 use crate::application::dtos::favorites_dto::FavoriteItemDto;
+use crate::application::ports::favorites_ports::{FavoritesRepositoryPort, FavoritesUseCase};
+use crate::common::errors::{DomainError, ErrorKind, Result};
+use async_trait::async_trait;
+use std::sync::Arc;
+use tracing::info;
 
 /// Implementation of the FavoritesUseCase for managing user favorites.
 ///
@@ -26,13 +26,20 @@ impl FavoritesUseCase for FavoritesService {
     async fn get_favorites(&self, user_id: &str) -> Result<Vec<FavoriteItemDto>> {
         info!("Getting favorites for user: {}", user_id);
         let favorites = self.repo.get_favorites(user_id).await?;
-        info!("Retrieved {} favorites for user {}", favorites.len(), user_id);
+        info!(
+            "Retrieved {} favorites for user {}",
+            favorites.len(),
+            user_id
+        );
         Ok(favorites)
     }
 
     /// Add an item to user's favorites
     async fn add_to_favorites(&self, user_id: &str, item_id: &str, item_type: &str) -> Result<()> {
-        info!("Adding {} '{}' to favorites for user {}", item_type, item_id, user_id);
+        info!(
+            "Adding {} '{}' to favorites for user {}",
+            item_type, item_id, user_id
+        );
 
         if item_type != "file" && item_type != "folder" {
             return Err(DomainError::new(
@@ -43,25 +50,48 @@ impl FavoritesUseCase for FavoritesService {
         }
 
         self.repo.add_favorite(user_id, item_id, item_type).await?;
-        info!("Successfully added {} '{}' to favorites for user {}", item_type, item_id, user_id);
+        info!(
+            "Successfully added {} '{}' to favorites for user {}",
+            item_type, item_id, user_id
+        );
         Ok(())
     }
 
     /// Remove an item from user's favorites
-    async fn remove_from_favorites(&self, user_id: &str, item_id: &str, item_type: &str) -> Result<bool> {
-        info!("Removing {} '{}' from favorites for user {}", item_type, item_id, user_id);
-        let removed = self.repo.remove_favorite(user_id, item_id, item_type).await?;
+    async fn remove_from_favorites(
+        &self,
+        user_id: &str,
+        item_id: &str,
+        item_type: &str,
+    ) -> Result<bool> {
+        info!(
+            "Removing {} '{}' from favorites for user {}",
+            item_type, item_id, user_id
+        );
+        let removed = self
+            .repo
+            .remove_favorite(user_id, item_id, item_type)
+            .await?;
         info!(
             "{} {} '{}' from favorites for user {}",
-            if removed { "Successfully removed" } else { "Did not find" },
-            item_type, item_id, user_id
+            if removed {
+                "Successfully removed"
+            } else {
+                "Did not find"
+            },
+            item_type,
+            item_id,
+            user_id
         );
         Ok(removed)
     }
 
     /// Check if an item is in user's favorites
     async fn is_favorite(&self, user_id: &str, item_id: &str, item_type: &str) -> Result<bool> {
-        info!("Checking if {} '{}' is favorite for user {}", item_type, item_id, user_id);
+        info!(
+            "Checking if {} '{}' is favorite for user {}",
+            item_type, item_id, user_id
+        );
         self.repo.is_favorite(user_id, item_id, item_type).await
     }
-}
+}