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/ports/recent_ports.rs

@@ -1,19 +1,29 @@
-use async_trait::async_trait;
-use crate::common::errors::Result;
 use crate::application::dtos::recent_dto::RecentItemDto;
+use crate::common::errors::Result;
+use async_trait::async_trait;
 
 /// Defines operations for managing user recent items
 #[async_trait]
 pub trait RecentItemsUseCase: Send + Sync {
     /// Get all recent items for a user
-    async fn get_recent_items(&self, user_id: &str, limit: Option<i32>) -> Result<Vec<RecentItemDto>>;
-    
+    async fn get_recent_items(
+        &self,
+        user_id: &str,
+        limit: Option<i32>,
+    ) -> Result<Vec<RecentItemDto>>;
+
     /// Record access to an item
-    async fn record_item_access(&self, user_id: &str, item_id: &str, item_type: &str) -> Result<()>;
-    
+    async fn record_item_access(&self, user_id: &str, item_id: &str, item_type: &str)
+    -> Result<()>;
+
     /// Remove an item from recents
-    async fn remove_from_recent(&self, user_id: &str, item_id: &str, item_type: &str) -> Result<bool>;
-    
+    async fn remove_from_recent(
+        &self,
+        user_id: &str,
+        item_id: &str,
+        item_type: &str,
+    ) -> Result<bool>;
+
     /// Clear the entire recent items list
     async fn clear_recent_items(&self, user_id: &str) -> Result<()>;
 }
@@ -42,4 +52,4 @@ pub trait RecentItemsRepositoryPort: Send + Sync + 'static {
 
     /// Removes items exceeding `max_items` (the oldest ones).
     async fn prune(&self, user_id: &str, max_items: i32) -> Result<()>;
-}
+}