Add image lightbox for item thumbnails and kit parts

src/components/ItemCard.tsx

@@ -25,6 +25,14 @@ export function ItemCard({ item, onEdit, onRemove }: Props) {
 
   const [hoverImg, setHoverImg] = useState<string | null>(null)
   const [mousePos, setMousePos] = useState({ x: 0, y: 0 })
+  const [lightboxImg, setLightboxImg] = useState<string | null>(null)
+
+  useEffect(() => {
+    if (!lightboxImg) return
+    function onKey(e: KeyboardEvent) { if (e.key === 'Escape') setLightboxImg(null) }
+    document.addEventListener('keydown', onKey)
+    return () => document.removeEventListener('keydown', onKey)
+  }, [lightboxImg])
 
   // Preload part images into memCache so resolveImageSync works on hover
   useEffect(() => {
@@ -52,7 +60,12 @@ export function ItemCard({ item, onEdit, onRemove }: Props) {
     >
       {/* Thumbnail */}
       {thumbnail ? (
-        <img src={thumbnail} alt={item.name} className="h-16 w-16 shrink-0 rounded object-cover" />
+        <img
+          src={thumbnail}
+          alt={item.name}
+          className="h-16 w-16 shrink-0 rounded object-cover cursor-zoom-in"
+          onClick={() => setLightboxImg(thumbnail)}
+        />
       ) : (
         <div
           className="flex h-16 w-16 shrink-0 items-center justify-center rounded text-2xl"
@@ -110,10 +123,11 @@ export function ItemCard({ item, onEdit, onRemove }: Props) {
                 <li
                   key={p.id}
                   className="flex items-center justify-between gap-2 text-xs"
-                  style={{ color: 'var(--color-grey)', cursor: p.image ? 'default' : undefined }}
+                  style={{ color: 'var(--color-grey)', cursor: p.image ? 'zoom-in' : undefined }}
                   onMouseEnter={p.image ? e => { setHoverImg(resolveImageSync(p.image) ?? null); setMousePos({ x: e.clientX, y: e.clientY }) } : undefined}
                   onMouseMove={p.image ? e => setMousePos({ x: e.clientX, y: e.clientY }) : undefined}
                   onMouseLeave={p.image ? () => setHoverImg(null) : undefined}
+                  onClick={p.image ? () => { const r = resolveImageSync(p.image); if (r) setLightboxImg(r) } : undefined}
                 >
                   <div className="flex items-center gap-1.5 min-w-0">
                     <span className="shrink-0 rounded px-1.5 py-0.5" style={{ background: 'var(--color-bg2)', color: 'var(--color-grey)' }}>
@@ -141,15 +155,32 @@ export function ItemCard({ item, onEdit, onRemove }: Props) {
       {/* Hover image preview */}
       {hoverImg && (
         <div
-          className="pointer-events-none fixed z-50 rounded-lg border shadow-lg overflow-hidden"
+          className="fixed z-50 rounded-lg border shadow-lg overflow-hidden cursor-zoom-in"
           style={{
             left: mousePos.x + 16,
             top: mousePos.y + 16,
             borderColor: 'var(--color-bg3)',
             background: 'var(--color-bg1)',
           }}
+          onClick={() => setLightboxImg(hoverImg)}
         >
-          <img src={hoverImg} alt="" className="block h-48 w-48 object-cover" />
+          <img src={hoverImg} alt="" className="pointer-events-none block h-48 w-48 object-cover" />
+        </div>
+      )}
+
+      {/* Lightbox */}
+      {lightboxImg && (
+        <div
+          className="fixed inset-0 z-50 flex items-center justify-center p-4 cursor-zoom-out"
+          style={{ background: 'rgba(0,0,0,0.8)' }}
+          onClick={() => setLightboxImg(null)}
+        >
+          <img
+            src={lightboxImg}
+            alt=""
+            className="max-h-full max-w-full rounded-lg object-contain shadow-2xl"
+            style={{ maxHeight: '90vh', maxWidth: '90vw' }}
+          />
         </div>
       )}
     </div>