Add image lightbox: click any image to view full-screen

Reusable ImageLightbox component with dark overlay, close on
click/Escape, zoom-in cursor on thumbnails. Applied to both
device and component detail pages.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/lib/components/ui/ImageLightbox.svelte

@@ -0,0 +1,28 @@
+<script lang="ts">
+	interface Props {
+		src: string;
+		alt?: string;
+		onclose: () => void;
+	}
+
+	let { src, alt = '', onclose }: Props = $props();
+
+	function handleKeydown(e: KeyboardEvent) {
+		if (e.key === 'Escape') onclose();
+	}
+</script>
+
+<svelte:window onkeydown={handleKeydown} />
+
+<!-- svelte-ignore a11y_click_events_have_key_events -->
+<!-- svelte-ignore a11y_no_static_element_interactions -->
+<div class="fixed inset-0 z-50 flex items-center justify-center bg-black/80" onclick={onclose}>
+	<button onclick={onclose}
+		class="absolute top-4 right-4 rounded-full bg-black/50 p-2 text-white hover:bg-black/70" aria-label="Close">
+		<svg class="h-6 w-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+			<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
+		</svg>
+	</button>
+	<!-- svelte-ignore a11y_no_noninteractive_element_interactions -->
+	<img {src} {alt} class="max-h-[90vh] max-w-[90vw] rounded-lg object-contain shadow-2xl" onclick={(e) => e.stopPropagation()} />
+</div>

src/routes/(app)/components/[id]/+page.svelte

@@ -4,6 +4,9 @@
 	import { formatDate, timeAgo } from '$lib/utils/date.js';
 	import ImageUpload from '$lib/components/ui/ImageUpload.svelte';
 	import DocumentUpload from '$lib/components/ui/DocumentUpload.svelte';
+	import ImageLightbox from '$lib/components/ui/ImageLightbox.svelte';
+
+	let lightboxSrc = $state<string | null>(null);
 
 	let { data, form } = $props();
 	const c = $derived(data.component);
@@ -100,7 +103,9 @@
 					<div class="grid gap-2 sm:grid-cols-3">
 						{#each data.images as img}
 							<div class="group relative overflow-hidden rounded-md">
-								<img src={img.filePath} alt={img.caption ?? c.title} class="h-32 w-full object-cover" />
+								<button type="button" onclick={() => (lightboxSrc = img.filePath)} class="w-full">
+									<img src={img.filePath} alt={img.caption ?? c.title} class="h-32 w-full cursor-zoom-in object-cover" />
+								</button>
 								<form method="POST" action="?/deleteImage" use:enhance
 									class="absolute top-1 right-1 hidden group-hover:block">
 									<input type="hidden" name="imageId" value={img.id} />
@@ -348,3 +353,7 @@
 		</div>
 	</div>
 </div>
+
+{#if lightboxSrc}
+	<ImageLightbox src={lightboxSrc} alt={c.title} onclose={() => (lightboxSrc = null)} />
+{/if}

src/routes/(app)/devices/[id]/+page.svelte

@@ -3,6 +3,9 @@
 	import { DEVICE_CONDITIONS, DEVICE_LOG_TYPES } from '$lib/constants.js';
 	import ImageUpload from '$lib/components/ui/ImageUpload.svelte';
 	import DocumentUpload from '$lib/components/ui/DocumentUpload.svelte';
+	import ImageLightbox from '$lib/components/ui/ImageLightbox.svelte';
+
+	let lightboxSrc = $state<string | null>(null);
 	import { formatDate, timeAgo } from '$lib/utils/date.js';
 
 	let { data, form } = $props();
@@ -160,7 +163,9 @@
 					<div class="grid gap-2 sm:grid-cols-3">
 						{#each data.images as img}
 							<div class="group relative overflow-hidden rounded-md">
-								<img src={img.filePath} alt={img.caption ?? data.device.title} class="h-32 w-full object-cover" />
+								<button type="button" onclick={() => (lightboxSrc = img.filePath)} class="w-full">
+									<img src={img.filePath} alt={img.caption ?? data.device.title} class="h-32 w-full cursor-zoom-in object-cover" />
+								</button>
 								<form method="POST" action="?/deleteImage" use:enhance
 									class="absolute top-1 right-1 hidden group-hover:block">
 									<input type="hidden" name="imageId" value={img.id} />
@@ -707,3 +712,7 @@
 		</div>
 	</div>
 </div>
+
+{#if lightboxSrc}
+	<ImageLightbox src={lightboxSrc} alt={data.device.title} onclose={() => (lightboxSrc = null)} />
+{/if}