feat(web): ⌘K command palette

bits-ui Command in a dialog: jump to sections, heaps, folders (from the
already-warm sidebar queries), plus dark-mode and shortcut-overlay
actions. Global ⌘K binding in the layout works from any route and while
inputs hold focus.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

web/src/routes/+layout.svelte

@@ -21,6 +21,8 @@
 	import PreviewModal from '$lib/components/preview/PreviewModal.svelte';
 	import MoveToFolderDialog from '$lib/components/layout/MoveToFolderDialog.svelte';
 	import ShortcutsDialog from '$lib/components/layout/ShortcutsDialog.svelte';
+	import CommandPalette from '$lib/components/layout/CommandPalette.svelte';
+	import { togglePalette } from '$lib/stores/view.svelte';
 
 	let { children } = $props();
 
@@ -59,8 +61,18 @@
 		else stopIndexerWatch();
 	});
 
+	// ⌘K lives at the window level (not gridKeyNav) so the palette opens
+	// from any route and even while a form field holds focus.
+	function onGlobalKey(e: KeyboardEvent) {
+		if ((e.metaKey || e.ctrlKey) && (e.key === 'k' || e.key === 'K')) {
+			e.preventDefault();
+			togglePalette();
+		}
+	}
 </script>
 
+<svelte:window onkeydown={onGlobalKey} />
+
 <svelte:head>
 	<title>Mulimage</title>
 </svelte:head>
@@ -125,6 +137,8 @@
 		<MoveToFolderDialog />
 		<!-- Keyboard-shortcut reference, toggled by `?` via gridKeyNav. -->
 		<ShortcutsDialog />
+		<!-- ⌘K palette — jump to sections/heaps/folders + global actions. -->
+		<CommandPalette />
 	{:else}
 		{@render children?.()}
 	{/if}