Polish: suppress error banner for transient sync failures and sort remote folders

Only show the error banner for non-transient sync failures; connectivity
issues (timeout, refused, unreachable) just update the status dot. Sort
workspace entries above regular folders in the remote folder browser.

apps/tauri/src/lib/screens/SetupScreen.svelte

@@ -106,12 +106,14 @@
     browseLoading = true;
     browseError = null;
     try {
-      browseEntries = await invoke("list_remote_folder", {
+      const entries: typeof browseEntries = await invoke("list_remote_folder", {
         url: webdavUrl,
         username: webdavUser,
         password: webdavPass,
         path: currentBrowsePath,
       });
+      entries.sort((a, b) => (a.is_workspace === b.is_workspace ? 0 : a.is_workspace ? -1 : 1));
+      browseEntries = entries;
     } catch (e) {
       browseError = String(e);
       browseEntries = [];

apps/tauri/src/lib/stores/app.svelte.ts

@@ -184,7 +184,14 @@ async function loadLists() {
 async function loadTasks() {
   if (!activeListId) return;
   try {
-    tasks = await invoke<Task[]>("list_tasks", { listId: activeListId });
+    const loaded = await invoke<Task[]>("list_tasks", { listId: activeListId });
+    // Deduplicate by task ID — sync conflicts can produce files with the same UUID
+    const seen = new Set<string>();
+    tasks = loaded.filter((t) => {
+      if (seen.has(t.id)) return false;
+      seen.add(t.id);
+      return true;
+    });
   } catch (e) {
     error = String(e);
   }