feat(web): keyboard rating/color marks, search focus, shortcuts overlay

Lightroom-style keys in grid+preview: 0-5 rating (re-key toggles),
6-9 color labels, optimistic marks cache patch with rollback. / focuses
the search box, ? opens a new shortcut-reference overlay that inertly
swallows other keys while open.

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

web/src/lib/actions/gridKeyNav.ts

@@ -7,7 +7,10 @@ import {
 	batchArchive,
 	batchDelete,
 	batchRestore,
+	bulkSetMarks,
 	removeFromHeap,
+	type PhotoMark,
+	type PhotoMarksMap,
 	type PpAlbum
 } from '$lib/services/photoprism';
 import { acceptDateAndKeep, cachedPhoto } from '$lib/services/photoActions';
@@ -36,7 +39,14 @@ import {
 	setDetail,
 	markRemoved
 } from '$lib/stores/bulkAction.svelte';
-import { openPreview, toggleLeftSidebar, toggleRightSidebar, view } from '$lib/stores/view.svelte';
+import {
+	closeShortcuts,
+	openPreview,
+	toggleLeftSidebar,
+	toggleRightSidebar,
+	toggleShortcuts,
+	view
+} from '$lib/stores/view.svelte';
 
 /**
  * Optional parameters the host passes via `use:gridKeyNav={...}`.
@@ -68,8 +78,8 @@ export interface GridKeyNavParams {
  *    heap N (bare s adds to the currently-viewed heap), b/Tab toggles
  *    left sidebar, i toggles right sidebar, esc clears, ⌘Z undoes,
  *    ⌘A selects all visible.
- *  Rating + color labels are mouse-driven via the metadata sidebar — no
+ *    0–5 rating, 6–9 Lightroom color labels, / focuses search,
- *  keyboard shortcuts.
+ *    ? opens the shortcut reference overlay.
  *
  * Archive / restore target a synthesized "cull target list" — in priority:
  *   1. multi-selection set
@@ -377,6 +387,55 @@ export function gridKeyNav(node: HTMLElement, params: GridKeyNavParams = {}) {
 		await addCullTargetsToHeap(heaps[idx - 1]);
 	}
 
+	// ── Rating / color-label keys (Lightroom layout) ─────────────────────
+	// Bare 0–5 set the rating (0 clears; re-keying the current value also
+	// clears, matching the sidebar's click-to-toggle). 6–9 toggle the four
+	// Lightroom color labels. Multi-selection stamps the whole set.
+	const COLOR_KEYS: Record<string, string> = { '6': 'red', '7': 'yellow', '8': 'green', '9': 'blue' };
+
+	async function markCullTargets(patch: PhotoMark, label: string) {
+		const ids = cullTargets();
+		if (ids.length === 0) {
+			toast.message('Nothing to mark', {
+				description: 'Click a photo or select some first'
+			});
+			return;
+		}
+		// Optimistic cache patch — the tile badges and facet panels read
+		// ['marks'], so stamping it up front makes the keystroke feel instant.
+		const prevMap = queryClient.getQueryData<PhotoMarksMap>(['marks']) ?? {};
+		const next: PhotoMarksMap = { ...prevMap };
+		for (const id of ids) {
+			const merged: PhotoMark = { ...next[id], ...patch };
+			if (!merged.rating) delete merged.rating;
+			if (!merged.color) delete merged.color;
+			next[id] = merged;
+		}
+		queryClient.setQueryData(['marks'], next);
+		try {
+			await bulkSetMarks(ids, patch);
+			void queryClient.invalidateQueries({ queryKey: ['marks'] });
+			toast.success(ids.length === 1 ? label : `${label} · ${ids.length} photos`);
+		} catch (err) {
+			queryClient.setQueryData(['marks'], prevMap);
+			toast.error(err instanceof Error ? err.message : 'Mark failed');
+		}
+	}
+
+	function ratingOfFirstTarget(): number {
+		const ids = cullTargets();
+		if (ids.length === 0) return 0;
+		const marks = queryClient.getQueryData<PhotoMarksMap>(['marks']) ?? {};
+		return marks[ids[0]]?.rating ?? 0;
+	}
+
+	function colorOfFirstTarget(): string {
+		const ids = cullTargets();
+		if (ids.length === 0) return '';
+		const marks = queryClient.getQueryData<PhotoMarksMap>(['marks']) ?? {};
+		return marks[ids[0]]?.color ?? '';
+	}
+
 	async function addCullTargetsToActiveHeap() {
 		if (filters.section !== 'heap' || !filters.heapUid) {
 			toast.message('Press S then 1–9 to pick a heap');
@@ -396,6 +455,17 @@ export function gridKeyNav(node: HTMLElement, params: GridKeyNavParams = {}) {
 		const tag = (e.target as HTMLElement | null)?.tagName?.toLowerCase();
 		if (tag === 'input' || tag === 'textarea' || tag === 'select') return;
 
+		// Shortcuts overlay: Esc or ? closes it; every other key is inert
+		// while it's up so the reference card can't trigger the actions it
+		// documents.
+		if (view.shortcutsOpen) {
+			if (e.key === 'Escape' || e.key === '?') {
+				e.preventDefault();
+				closeShortcuts();
+			}
+			return;
+		}
+
 		// Modal owns arrow / Escape / Space while it's open — it handles
 		// its own linear nav, close-on-Esc, and close-on-Space. Action
 		// keys (X/S/U/A/Z) still pass through because they target the
@@ -431,6 +501,22 @@ export function gridKeyNav(node: HTMLElement, params: GridKeyNavParams = {}) {
 		const meta = e.metaKey || e.ctrlKey;
 		const shift = e.shiftKey;
 
+		// Bare digits: rating (0–5, re-key toggles off) and Lightroom color
+		// labels (6–9). Runs after the S-chord so "s 3" still files to heap 3.
+		if (!meta && !shift && /^[0-9]$/.test(e.key)) {
+			e.preventDefault();
+			const n = parseInt(e.key, 10);
+			if (n <= 5) {
+				const value = n === 0 || ratingOfFirstTarget() === n ? 0 : n;
+				void markCullTargets({ rating: value }, value ? `Rated ${value}★` : 'Rating cleared');
+			} else {
+				const color = COLOR_KEYS[e.key];
+				const value = colorOfFirstTarget() === color ? '' : color;
+				void markCullTargets({ color: value }, value ? `Labeled ${value}` : 'Color cleared');
+			}
+			return;
+		}
+
 		// Space on a focused tile opens the full-screen preview modal.
 		// Matches the dblclick gesture so the user has both keyboard and
 		// mouse paths to the same surface. `e.code === 'Space'` covers
@@ -477,6 +563,17 @@ export function gridKeyNav(node: HTMLElement, params: GridKeyNavParams = {}) {
 				clearSelection();
 				setFocused(null);
 				return;
+			case '/':
+				// Jump to the search box (any page that renders one tags it
+				// with data-search-input).
+				if (meta) return;
+				e.preventDefault();
+				document.querySelector<HTMLInputElement>('[data-search-input]')?.focus();
+				return;
+			case '?':
+				e.preventDefault();
+				toggleShortcuts();
+				return;
 			case 'Tab':
 				// Tab in the grid context = mule-image's left-sidebar toggle.
 				// Browsers reserve Tab for focus traversal — preventDefault

web/src/lib/components/layout/ShortcutsDialog.svelte

@@ -0,0 +1,120 @@
+<!--
+	Keyboard-shortcut reference overlay, opened with `?` (and the toolbar
+	help affordance). Read-only: gridKeyNav swallows every key except
+	Esc / ? while it's up, so nothing here can fire the actions it lists.
+-->
+<script lang="ts">
+	import { closeShortcuts, view } from '$lib/stores/view.svelte';
+	import { X } from 'lucide-svelte';
+
+	interface Row {
+		keys: string[];
+		desc: string;
+	}
+	interface Group {
+		title: string;
+		rows: Row[];
+	}
+
+	const GROUPS: Group[] = [
+		{
+			title: 'Navigate',
+			rows: [
+				{ keys: ['↑', '↓', '←', '→'], desc: 'Move focus in the grid' },
+				{ keys: ['Shift', '+', 'Arrows'], desc: 'Extend selection' },
+				{ keys: ['Space'], desc: 'Open / close preview' },
+				{ keys: ['Esc'], desc: 'Collapse selection, then clear' },
+				{ keys: ['/'], desc: 'Focus search' },
+				{ keys: ['⌘', 'A'], desc: 'Select all visible' },
+				{ keys: ['⌘', 'K'], desc: 'Command palette' }
+			]
+		},
+		{
+			title: 'Rate & label',
+			rows: [
+				{ keys: ['1', '…', '5'], desc: 'Set rating (re-key to clear)' },
+				{ keys: ['0'], desc: 'Clear rating' },
+				{ keys: ['6', '7', '8', '9'], desc: 'Color label: red / yellow / green / blue' },
+				{ keys: ['F'], desc: 'Toggle favorite' }
+			]
+		},
+		{
+			title: 'Act',
+			rows: [
+				{ keys: ['X'], desc: 'Archive (Delete in Archive view)' },
+				{ keys: ['U'], desc: 'Restore from archive' },
+				{ keys: ['S'], desc: 'Keep (review) · add to heap' },
+				{ keys: ['S', 'then', '1–9'], desc: 'Add to heap N' },
+				{ keys: ['A'], desc: 'Accept date & keep (EXIF review)' },
+				{ keys: ['M'], desc: 'Move to folder' },
+				{ keys: ['⌘', 'Z'], desc: 'Undo last action' }
+			]
+		},
+		{
+			title: 'Panels',
+			rows: [
+				{ keys: ['B'], desc: 'Toggle left sidebar' },
+				{ keys: ['Tab'], desc: 'Toggle left sidebar' },
+				{ keys: ['I'], desc: 'Toggle info sidebar' },
+				{ keys: ['?'], desc: 'This overlay' }
+			]
+		}
+	];
+</script>
+
+{#if view.shortcutsOpen}
+	<!-- svelte-ignore a11y_click_events_have_key_events a11y_no_static_element_interactions -->
+	<div
+		class="fixed inset-0 z-[70] flex items-center justify-center bg-black/50 backdrop-blur-sm"
+		onclick={(e) => {
+			if (e.target === e.currentTarget) closeShortcuts();
+		}}
+	>
+		<div
+			role="dialog"
+			aria-modal="true"
+			aria-label="Keyboard shortcuts"
+			class="max-h-[85vh] w-[min(680px,92vw)] overflow-y-auto rounded-lg border border-border bg-popover p-5 text-popover-foreground shadow-xl"
+		>
+			<div class="mb-4 flex items-center justify-between">
+				<h2 class="text-sm font-semibold">Keyboard shortcuts</h2>
+				<button
+					class="rounded p-1 text-muted-foreground hover:bg-accent hover:text-foreground"
+					onclick={closeShortcuts}
+					aria-label="Close"
+				>
+					<X class="h-4 w-4" />
+				</button>
+			</div>
+			<div class="grid gap-x-8 gap-y-4 sm:grid-cols-2">
+				{#each GROUPS as group (group.title)}
+					<section>
+						<h3 class="mb-1.5 text-[10px] font-medium uppercase tracking-wide text-muted-foreground">
+							{group.title}
+						</h3>
+						<dl class="space-y-1">
+							{#each group.rows as row (row.desc)}
+								<div class="flex items-center justify-between gap-3 text-xs">
+									<dt class="text-muted-foreground">{row.desc}</dt>
+									<dd class="flex shrink-0 items-center gap-0.5">
+										{#each row.keys as k (k)}
+											{#if k === 'then' || k === '+' || k === '…'}
+												<span class="px-0.5 text-[10px] text-muted-foreground">{k}</span>
+											{:else}
+												<kbd
+													class="rounded border border-border bg-muted px-1.5 py-0.5 font-mono text-[10px] leading-none"
+												>
+													{k}
+												</kbd>
+											{/if}
+										{/each}
+									</dd>
+								</div>
+							{/each}
+						</dl>
+					</section>
+				{/each}
+			</div>
+		</div>
+	</div>
+{/if}

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

@@ -81,6 +81,8 @@ export const view = $state<{
 	 * persisted — a refresh always returns to the grid.
 	 */
 	previewOpen: boolean;
+	/** Ephemeral: true while the keyboard-shortcuts overlay is open. */
+	shortcutsOpen: boolean;
 	metadataSections: Record<string, boolean>;
 }>({
 	rightSidebarCollapsed: initial.rightSidebarCollapsed ?? false,
@@ -107,6 +109,7 @@ export const view = $state<{
 	),
 	tagsBrowserCollapsed: initial.tagsBrowserCollapsed ?? false,
 	previewOpen: false,
+	shortcutsOpen: false,
 	metadataSections:
 		initial.metadataSections && typeof initial.metadataSections === 'object'
 			? { ...initial.metadataSections }
@@ -164,6 +167,14 @@ export function togglePreview(): void {
 	view.previewOpen = !view.previewOpen;
 }
 
+export function toggleShortcuts(): void {
+	view.shortcutsOpen = !view.shortcutsOpen;
+}
+
+export function closeShortcuts(): void {
+	view.shortcutsOpen = false;
+}
+
 export function setThumbnailSize(size: ThumbnailSize): void {
 	view.thumbnailSize = size;
 	persist();

web/src/routes/+layout.svelte

@@ -20,6 +20,7 @@
 	import AnimatedMule from '$lib/components/mule/AnimatedMule.svelte';
 	import PreviewModal from '$lib/components/preview/PreviewModal.svelte';
 	import MoveToFolderDialog from '$lib/components/layout/MoveToFolderDialog.svelte';
+	import ShortcutsDialog from '$lib/components/layout/ShortcutsDialog.svelte';
 
 	let { children } = $props();
 
@@ -122,6 +123,8 @@
 		     store. Opened from the heap/folder kebabs, the BulkActionBar
 		     button, and the `m` shortcut — all through openMove(). -->
 		<MoveToFolderDialog />
+		<!-- Keyboard-shortcut reference, toggled by `?` via gridKeyNav. -->
+		<ShortcutsDialog />
 	{:else}
 		{@render children?.()}
 	{/if}

web/src/routes/+page.svelte

@@ -843,6 +843,7 @@
   <form class="relative flex items-center gap-1" onsubmit={onSearchSubmit}>
     <input
       type="search"
+      data-search-input
       placeholder={'Search · label:website / "vacation"'}
       class="w-56 rounded border border-input bg-background px-2 py-0.5 text-xs shadow-sm focus:outline-none focus:ring-2 focus:ring-ring"
       bind:value={searchDraft}