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/domain/repositories/calendar_repository.rs

@@ -1,7 +1,7 @@
-use async_trait::async_trait;
-use uuid::Uuid;
 use crate::common::errors::DomainError;
 use crate::domain::entities::calendar::Calendar;
+use async_trait::async_trait;
+use uuid::Uuid;
 
 pub type CalendarRepositoryResult<T> = Result<T, DomainError>;
 
@@ -10,49 +10,95 @@ pub type CalendarRepositoryResult<T> = Result<T, DomainError>;
 pub trait CalendarRepository: Send + Sync + 'static {
     /// Creates a new calendar
     async fn create_calendar(&self, calendar: Calendar) -> CalendarRepositoryResult<Calendar>;
-    
+
     /// Updates an existing calendar
     async fn update_calendar(&self, calendar: Calendar) -> CalendarRepositoryResult<Calendar>;
-    
+
     /// Deletes a calendar by ID
     async fn delete_calendar(&self, id: &Uuid) -> CalendarRepositoryResult<()>;
-    
+
     /// Finds a calendar by its ID
     async fn find_calendar_by_id(&self, id: &Uuid) -> CalendarRepositoryResult<Calendar>;
-    
+
     /// Lists all calendars for a specific user
-    async fn list_calendars_by_owner(&self, owner_id: &str) -> CalendarRepositoryResult<Vec<Calendar>>;
-    
+    async fn list_calendars_by_owner(
+        &self,
+        owner_id: &str,
+    ) -> CalendarRepositoryResult<Vec<Calendar>>;
+
     /// Finds a calendar by name and owner
-    async fn find_calendar_by_name_and_owner(&self, name: &str, owner_id: &str) -> CalendarRepositoryResult<Calendar>;
-    
+    async fn find_calendar_by_name_and_owner(
+        &self,
+        name: &str,
+        owner_id: &str,
+    ) -> CalendarRepositoryResult<Calendar>;
+
     /// Lists calendars shared with a specific user
-    async fn list_calendars_shared_with_user(&self, user_id: &str) -> CalendarRepositoryResult<Vec<Calendar>>;
-    
+    async fn list_calendars_shared_with_user(
+        &self,
+        user_id: &str,
+    ) -> CalendarRepositoryResult<Vec<Calendar>>;
+
     /// List public calendars
-    async fn list_public_calendars(&self, limit: i64, offset: i64) -> CalendarRepositoryResult<Vec<Calendar>>;
-    
+    async fn list_public_calendars(
+        &self,
+        limit: i64,
+        offset: i64,
+    ) -> CalendarRepositoryResult<Vec<Calendar>>;
+
     /// Checks if a user has access to a calendar
-    async fn user_has_calendar_access(&self, calendar_id: &Uuid, user_id: &str) -> CalendarRepositoryResult<bool>;
-    
+    async fn user_has_calendar_access(
+        &self,
+        calendar_id: &Uuid,
+        user_id: &str,
+    ) -> CalendarRepositoryResult<bool>;
+
     /// Gets a custom property for a calendar
-    async fn get_calendar_property(&self, calendar_id: &Uuid, property_name: &str) -> CalendarRepositoryResult<Option<String>>;
-    
+    async fn get_calendar_property(
+        &self,
+        calendar_id: &Uuid,
+        property_name: &str,
+    ) -> CalendarRepositoryResult<Option<String>>;
+
     /// Sets a custom property for a calendar
-    async fn set_calendar_property(&self, calendar_id: &Uuid, property_name: &str, property_value: &str) -> CalendarRepositoryResult<()>;
-    
+    async fn set_calendar_property(
+        &self,
+        calendar_id: &Uuid,
+        property_name: &str,
+        property_value: &str,
+    ) -> CalendarRepositoryResult<()>;
+
     /// Removes a custom property from a calendar
-    async fn remove_calendar_property(&self, calendar_id: &Uuid, property_name: &str) -> CalendarRepositoryResult<()>;
-    
+    async fn remove_calendar_property(
+        &self,
+        calendar_id: &Uuid,
+        property_name: &str,
+    ) -> CalendarRepositoryResult<()>;
+
     /// Gets all custom properties for a calendar
-    async fn get_calendar_properties(&self, calendar_id: &Uuid) -> CalendarRepositoryResult<std::collections::HashMap<String, String>>;
-    
+    async fn get_calendar_properties(
+        &self,
+        calendar_id: &Uuid,
+    ) -> CalendarRepositoryResult<std::collections::HashMap<String, String>>;
+
     /// Share calendar with another user
-    async fn share_calendar(&self, calendar_id: &Uuid, user_id: &str, access_level: &str) -> CalendarRepositoryResult<()>;
-    
+    async fn share_calendar(
+        &self,
+        calendar_id: &Uuid,
+        user_id: &str,
+        access_level: &str,
+    ) -> CalendarRepositoryResult<()>;
+
     /// Remove calendar sharing for a user
-    async fn remove_calendar_sharing(&self, calendar_id: &Uuid, user_id: &str) -> CalendarRepositoryResult<()>;
-    
+    async fn remove_calendar_sharing(
+        &self,
+        calendar_id: &Uuid,
+        user_id: &str,
+    ) -> CalendarRepositoryResult<()>;
+
     /// Get calendar sharing information (who has access to this calendar)
-    async fn get_calendar_shares(&self, calendar_id: &Uuid) -> CalendarRepositoryResult<Vec<(String, String)>>;
-}
+    async fn get_calendar_shares(
+        &self,
+        calendar_id: &Uuid,
+    ) -> CalendarRepositoryResult<Vec<(String, String)>>;
+}