Photo and Icon components (#37)

Co-authored-by: dev_agent <dev_agent@cubecraftlabs.com>
Co-committed-by: dev_agent <dev_agent@cubecraftlabs.com>

web/src/ui/Photo.tsx

@@ -0,0 +1,49 @@
+import { useState, type CSSProperties } from 'react'
+import styles from './Photo.module.css'
+
+export type PhotoProps = {
+  // Photo id; the server stores /media/photos/{id}-400.jpg and -1200.jpg.
+  // Without one the striped "dish photo" placeholder is shown.
+  id?: string
+  // The dinner name, used as the alt text.
+  name: string
+  // Corner radius and the margin from the containing card edge, as CSS lengths.
+  radius?: string
+  inset?: string
+  // The rendered width hint for srcset selection.
+  sizes?: string
+  className?: string
+  style?: CSSProperties
+}
+
+// Dinner photo through the Organic "washed" filter. Falls back to the
+// striped placeholder when there is no photo or it fails to load.
+export function Photo({ id, name, radius = '24px', inset = '0', sizes = '100vw', className, style }: PhotoProps) {
+  // The id whose image failed, so a new id gets a fresh attempt.
+  const [failedId, setFailedId] = useState<string>()
+  const frame = { '--photo-radius': radius, '--photo-inset': inset, ...style } as CSSProperties
+
+  if (id === undefined || failedId === id) {
+    const classes = [styles.frame, styles.placeholder, className].filter(Boolean).join(' ')
+    return (
+      <div role="img" aria-label={name} className={classes} style={frame}>
+        <span aria-hidden="true">dish photo</span>
+      </div>
+    )
+  }
+
+  const base = `/media/photos/${encodeURIComponent(id)}`
+  const classes = [styles.frame, styles.photo, className].filter(Boolean).join(' ')
+  return (
+    <img
+      src={`${base}-400.jpg`}
+      srcSet={`${base}-400.jpg 400w, ${base}-1200.jpg 1200w`}
+      sizes={sizes}
+      loading="lazy"
+      alt={name}
+      className={classes}
+      style={frame}
+      onError={() => setFailedId(id)}
+    />
+  )
+}