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/lib/components/layout/CommandPalette.svelte

@@ -0,0 +1,200 @@
+<!--
+	⌘K command palette. Jump to any section, heap, folder, or tag category,
+	plus a few global actions (dark mode, shortcut overlay). Data comes from
+	the same TanStack queries the sidebar already keeps warm (['heaps'],
+	['folders', …]), so opening the palette costs no extra fetches once the
+	app has booted. bits-ui's Command owns filtering and keyboard selection.
+-->
+<script lang="ts">
+	import { goto } from '$app/navigation';
+	import { Command, Dialog } from 'bits-ui';
+	import { createQuery } from '@tanstack/svelte-query';
+	import { toggleMode } from 'mode-watcher';
+	import {
+		Archive,
+		EyeOff,
+		Folder,
+		Image,
+		Keyboard,
+		Layers,
+		ListChecks,
+		Moon,
+		NotebookPen,
+		Tags,
+		Users
+	} from 'lucide-svelte';
+	import { listFolders, listHeaps, type PpAlbum, type PpFolder } from '$lib/services/photoprism';
+	import { isAuthenticated, userLibraryBase } from '$lib/stores/session.svelte';
+	import { closePalette, toggleShortcuts, view } from '$lib/stores/view.svelte';
+
+	const heapsQuery = createQuery<PpAlbum[]>(() => ({
+		queryKey: ['heaps'],
+		queryFn: listHeaps,
+		enabled: isAuthenticated() && view.paletteOpen
+	}));
+	const foldersQuery = createQuery<PpFolder[]>(() => ({
+		queryKey: ['folders', userLibraryBase()],
+		queryFn: listFolders,
+		staleTime: 30_000,
+		enabled: isAuthenticated() && view.paletteOpen
+	}));
+
+	function run(fn: () => void) {
+		closePalette();
+		fn();
+	}
+
+	const go = (path: string) => () => run(() => void goto(path));
+
+	interface Entry {
+		label: string;
+		icon: typeof Image;
+		action: () => void;
+	}
+
+	const SECTIONS: Entry[] = [
+		{ label: 'All photos', icon: Image, action: go('/') },
+		{ label: 'Review queue', icon: ListChecks, action: go('/review') },
+		{ label: 'Archive', icon: Archive, action: go('/?section=archive') },
+		{ label: 'Hidden', icon: EyeOff, action: go('/?section=hidden') },
+		{ label: 'Notes', icon: NotebookPen, action: go('/notes') },
+		{ label: 'Tags', icon: Tags, action: go('/tags/labels') },
+		{ label: 'People', icon: Users, action: go('/tags/people') },
+		{ label: 'Duplicates', icon: Layers, action: go('/review?tab=stacks') }
+	];
+
+	const ACTIONS: Entry[] = [
+		{ label: 'Toggle dark mode', icon: Moon, action: () => run(toggleMode) },
+		{ label: 'Keyboard shortcuts', icon: Keyboard, action: () => run(toggleShortcuts) }
+	];
+
+	// Folders can number in the hundreds; the palette lists them all and
+	// lets Command's fuzzy filter narrow. Sorted shallow-first so top-level
+	// folders surface before deep ones on an empty query.
+	const folderEntries = $derived(
+		[...(foldersQuery.data ?? [])]
+			.sort(
+				(a, b) =>
+					a.Path.split('/').length - b.Path.split('/').length || a.Path.localeCompare(b.Path)
+			)
+			.slice(0, 400)
+	);
+</script>
+
+<Dialog.Root
+	open={view.paletteOpen}
+	onOpenChange={(o) => {
+		if (!o) closePalette();
+	}}
+>
+	<Dialog.Portal>
+		<Dialog.Overlay class="fixed inset-0 z-[80] bg-black/50 backdrop-blur-sm" />
+		<Dialog.Content
+			class="fixed left-1/2 top-24 z-[81] w-[min(560px,92vw)] -translate-x-1/2 overflow-hidden rounded-lg border border-border bg-popover text-popover-foreground shadow-xl"
+			aria-label="Command palette"
+		>
+			<Command.Root class="flex max-h-[60vh] flex-col">
+				<Command.Input
+					class="w-full border-b border-border bg-transparent px-4 py-3 text-sm outline-none placeholder:text-muted-foreground"
+					placeholder="Jump to a view, heap, or folder…"
+				/>
+				<Command.List class="overflow-y-auto p-1.5">
+					<Command.Viewport>
+						<Command.Empty class="px-3 py-6 text-center text-xs text-muted-foreground">
+							No matches.
+						</Command.Empty>
+
+						<Command.Group>
+							<Command.GroupHeading
+								class="px-2 pb-1 pt-2 text-[10px] uppercase tracking-wide text-muted-foreground"
+							>
+								Go to
+							</Command.GroupHeading>
+							<Command.GroupItems>
+								{#each SECTIONS as s (s.label)}
+									<Command.Item
+										value={s.label}
+										onSelect={s.action}
+										class="flex cursor-pointer items-center gap-2 rounded px-2 py-1.5 text-xs data-selected:bg-accent"
+									>
+										<s.icon class="h-3.5 w-3.5 text-muted-foreground" />
+										{s.label}
+									</Command.Item>
+								{/each}
+							</Command.GroupItems>
+						</Command.Group>
+
+						{#if (heapsQuery.data ?? []).length > 0}
+							<Command.Group>
+								<Command.GroupHeading
+									class="px-2 pb-1 pt-2 text-[10px] uppercase tracking-wide text-muted-foreground"
+								>
+									Heaps
+								</Command.GroupHeading>
+								<Command.GroupItems>
+									{#each heapsQuery.data ?? [] as heap (heap.UID)}
+										<Command.Item
+											value={`heap ${heap.Title}`}
+											onSelect={go(`/?section=heap&heap=${heap.UID}`)}
+											class="flex cursor-pointer items-center gap-2 rounded px-2 py-1.5 text-xs data-selected:bg-accent"
+										>
+											<Layers class="h-3.5 w-3.5 text-muted-foreground" />
+											{heap.Title}
+											{#if heap.PhotoCount}
+												<span class="ml-auto text-[10px] text-muted-foreground">
+													{heap.PhotoCount}
+												</span>
+											{/if}
+										</Command.Item>
+									{/each}
+								</Command.GroupItems>
+							</Command.Group>
+						{/if}
+
+						{#if folderEntries.length > 0}
+							<Command.Group>
+								<Command.GroupHeading
+									class="px-2 pb-1 pt-2 text-[10px] uppercase tracking-wide text-muted-foreground"
+								>
+									Folders
+								</Command.GroupHeading>
+								<Command.GroupItems>
+									{#each folderEntries as folder (folder.Path)}
+										<Command.Item
+											value={`folder ${folder.Path}`}
+											onSelect={go(`/?folder=${encodeURIComponent(folder.Path)}`)}
+											class="flex cursor-pointer items-center gap-2 rounded px-2 py-1.5 text-xs data-selected:bg-accent"
+										>
+											<Folder class="h-3.5 w-3.5 text-muted-foreground" />
+											<span class="truncate">{folder.Path}</span>
+										</Command.Item>
+									{/each}
+								</Command.GroupItems>
+							</Command.Group>
+						{/if}
+
+						<Command.Group>
+							<Command.GroupHeading
+								class="px-2 pb-1 pt-2 text-[10px] uppercase tracking-wide text-muted-foreground"
+							>
+								Actions
+							</Command.GroupHeading>
+							<Command.GroupItems>
+								{#each ACTIONS as a (a.label)}
+									<Command.Item
+										value={a.label}
+										onSelect={a.action}
+										class="flex cursor-pointer items-center gap-2 rounded px-2 py-1.5 text-xs data-selected:bg-accent"
+									>
+										<a.icon class="h-3.5 w-3.5 text-muted-foreground" />
+										{a.label}
+									</Command.Item>
+								{/each}
+							</Command.GroupItems>
+						</Command.Group>
+					</Command.Viewport>
+				</Command.List>
+			</Command.Root>
+		</Dialog.Content>
+	</Dialog.Portal>
+</Dialog.Root>

web/src/lib/stores/view.svelte.ts

@@ -83,6 +83,8 @@ export const view = $state<{
 	previewOpen: boolean;
 	/** Ephemeral: true while the keyboard-shortcuts overlay is open. */
 	shortcutsOpen: boolean;
+	/** Ephemeral: true while the ⌘K command palette is open. */
+	paletteOpen: boolean;
 	metadataSections: Record<string, boolean>;
 }>({
 	rightSidebarCollapsed: initial.rightSidebarCollapsed ?? false,
@@ -110,6 +112,7 @@ export const view = $state<{
 	tagsBrowserCollapsed: initial.tagsBrowserCollapsed ?? false,
 	previewOpen: false,
 	shortcutsOpen: false,
+	paletteOpen: false,
 	metadataSections:
 		initial.metadataSections && typeof initial.metadataSections === 'object'
 			? { ...initial.metadataSections }
@@ -175,6 +178,14 @@ export function closeShortcuts(): void {
 	view.shortcutsOpen = false;
 }
 
+export function togglePalette(): void {
+	view.paletteOpen = !view.paletteOpen;
+}
+
+export function closePalette(): void {
+	view.paletteOpen = false;
+}
+
 export function setThumbnailSize(size: ThumbnailSize): void {
 	view.thumbnailSize = size;
 	persist();

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}