fix offline mode and layout bugs

src-tauri/src/repository/hybrid.rs

@@ -79,6 +79,26 @@ impl HybridRepository {
             .await
     }
 
+    /// Fetch a folder's items from the live server and persist them to the
+    /// offline cache synchronously (unlike `get_items`, which saves in a
+    /// fire-and-forget background task after a 100ms cache race).
+    ///
+    /// Used by the full-catalog pre-sync (`sync_full_catalog`) to deterministically
+    /// walk every library while online so the whole catalog is browsable — greyed
+    /// out — offline. Returns the items fetched so the caller can recurse into
+    /// containers. Server-only: errors if unreachable.
+    pub async fn cache_items_from_server(
+        &self,
+        parent_id: &str,
+        options: Option<GetItemsOptions>,
+    ) -> Result<Vec<MediaItem>, RepoError> {
+        let result = self.online.get_items(parent_id, options).await?;
+        if !result.items.is_empty() {
+            self.offline.save_to_cache(parent_id, &result.items).await?;
+        }
+        Ok(result.items)
+    }
+
     /// Search only the live Jellyfin server (full library).
     pub async fn search_server_only(
         &self,