Fix mobile navigation and Tasks layout

src/lib/components/AppLayout.svelte

@@ -614,7 +614,9 @@
 		// Run sidebar and note list refresh in parallel
 		await Promise.all([sidebar?.refresh(), noteList?.refresh()]);
 
-		// Auto-cleanup orphaned attachments in the background
+		// Full-vault attachment scans cause navigation stalls on mobile storage.
+		// Mobile users can run the same cleanup explicitly from the Info panel.
+		if (!isMobile) {
 			setTimeout(async () => {
 				if (get(editorDirty)) return; // skip if user is actively editing
 				try {
@@ -633,6 +635,7 @@
 					}
 				} catch (_) {}
 			}, 3000);
+		}
 
 		// Restore the last session (view + open note) if enabled.
 		if ($appConfig?.restore_last_session) {

src/lib/components/NoteList.svelte

@@ -1112,7 +1112,7 @@
 	{/if}
 
 	<!-- svelte-ignore a11y_no_static_element_interactions -->
-	<div class="list-content" bind:this={listContainer} onscroll={onListScroll} ondblclick={handleListDoubleClick}>
+	<div class="list-content" class:tasks-mode={$viewMode === 'tasks'} bind:this={listContainer} onscroll={onListScroll} ondblclick={handleListDoubleClick}>
 		{#if $viewMode === 'tasks'}
 			<TasksView onOpenTask={openTask} onToggleTask={onToggleTask} onSetTaskPriority={onSetTaskPriority} onSetTaskDue={onSetTaskDue} />
 		{/if}
@@ -2213,6 +2213,11 @@
 		padding: 4px 8px 180px;
 	}
 
+	.note-list.mobile .list-content.tasks-mode {
+		padding-bottom: 0;
+		overflow: hidden;
+	}
+
 	.note-list.mobile .note-item {
 		padding: 14px 16px;
 		min-height: 56px;