feat: add telegram-style resource stream

src/components/messageStream/bubbles/ImageBubble.tsx

@@ -0,0 +1,27 @@
+import type { Post } from "../../../types/post";
+import { useLightbox } from "../overlays/ImageLightbox";
+
+export function ImageBubble({ post }: { post: Post }) {
+  const { openLightbox } = useLightbox();
+  const att = post.attachments[0];
+  if (!att) return null;
+  const ratio =
+    att.width && att.height ? `${att.width} / ${att.height}` : "4 / 3";
+
+  return (
+    <button
+      type="button"
+      onClick={() => openLightbox([att], 0)}
+      className="relative block w-full overflow-hidden rounded-xl max-h-[240px] min-[440px]:max-h-[270px] md:max-h-[320px] lg:max-h-[360px]"
+      aria-label={att.filename}
+    >
+      <img
+        src={att.url}
+        alt={att.filename}
+        loading="lazy"
+        className="h-full w-full object-cover"
+        style={{ aspectRatio: ratio }}
+      />
+    </button>
+  );
+}