fix(rust): Apply cargo fmt and clippy fixes

- Fixed formatting issues in sync/engine.rs
- Added #[allow(dead_code)] for unused storage field in DownloadManager
- Replaced manual clamp with .clamp() method

Co-Authored-By: Claude <noreply@anthropic.com>

rust/src/sync/download.rs

@@ -13,6 +13,7 @@ use tokio::io::AsyncWriteExt;
 /// Manages file downloads with parallel processing and error recovery
 pub struct DownloadManager {
     api_client: ApiClient,
+    #[allow(dead_code)]
     storage: Storage,
     temp_dir: PathBuf,
     collection_keys: HashMap<i64, Vec<u8>>,
@@ -41,7 +42,7 @@ impl DownloadManager {
 
     /// Set number of concurrent downloads
     pub fn set_concurrent_downloads(&mut self, count: usize) {
-        self.concurrent_downloads = count.max(1).min(10); // Limit between 1-10
+        self.concurrent_downloads = count.clamp(1, 10); // Limit between 1-10
     }
 
     /// Download a single file
@@ -60,7 +61,7 @@ impl DownloadManager {
 
         // Check if file already exists
         if destination.exists() {
-            log::debug!("File already exists at {:?}, skipping", destination);
+            log::debug!("File already exists at {destination:?}, skipping");
             return Ok(());
         }
 
@@ -99,7 +100,7 @@ impl DownloadManager {
         use futures::stream::{self, StreamExt};
 
         let total = files.len();
-        log::info!("Starting download of {} files", total);
+        log::info!("Starting download of {total} files");
 
         let mut stats = DownloadStats {
             total,
@@ -124,7 +125,7 @@ impl DownloadManager {
             match result {
                 Ok(_) => stats.successful += 1,
                 Err(e) => {
-                    log::error!("Download failed: {}", e);
+                    log::error!("Download failed: {e}");
                     stats.failed += 1;
                 }
             }
@@ -225,7 +226,7 @@ impl DownloadManager {
             }
         }
 
-        log::debug!("Cleaned up {} temporary files", count);
+        log::debug!("Cleaned up {count} temporary files");
         Ok(())
     }
 }

rust/src/sync/engine.rs

@@ -36,7 +36,7 @@ impl SyncEngine {
         // Then sync files
         stats.files = self.sync_files(account_id).await?;
 
-        log::info!("Sync completed: {:?}", stats);
+        log::info!("Sync completed: {stats:?}");
         Ok(stats)
     }
 
@@ -130,25 +130,36 @@ impl SyncEngine {
                 continue;
             }
 
-            log::debug!("Syncing files for collection: {} ({})", collection.name, collection.id);
+            log::debug!(
+                "Syncing files for collection: {} ({})",
+                collection.name,
+                collection.id
+            );
 
             // Get last sync time for this collection's files
             let mut last_sync = sync_store
-                .get_last_sync(self.account.id, &format!("collection_{}_files", collection.id))?
+                .get_last_sync(
+                    self.account.id,
+                    &format!("collection_{}_files", collection.id),
+                )?
                 .unwrap_or(0);
 
             let mut has_more = true;
             while has_more {
-                log::debug!("Fetching files for collection {}, since_time: {}", collection.id, last_sync);
+                log::debug!(
+                    "Fetching files for collection {}, since_time: {}",
+                    collection.id,
+                    last_sync
+                );
 
                 let (files, more) = api
                     .get_collection_files(account_id, collection.id, last_sync)
                     .await?;
                 has_more = more;
 
-            if files.is_empty() {
-                break;
-            }
+                if files.is_empty() {
+                    break;
+                }
 
                 result.total += files.len();
 
@@ -176,7 +187,11 @@ impl SyncEngine {
                             size: file.thumbnail.size,
                         },
                         metadata: crate::models::file::MetadataInfo {
-                            encrypted_data: file.metadata.encrypted_data.clone().unwrap_or_default(),
+                            encrypted_data: file
+                                .metadata
+                                .encrypted_data
+                                .clone()
+                                .unwrap_or_default(),
                             decryption_header: file.metadata.decryption_header.clone(),
                         },
                         is_deleted: file.is_deleted,