Add MSC4522 username colors, release notes dialog, and profile layout fixes.

Replace legacy profile style metadata with MSC4133 profile fields, add in-app update notes, tighten account profile name spacing, and wire desktop media save helpers through the client.

src/app/components/message/Reply.tsx

@@ -117,7 +117,7 @@ export const Reply = as<'div', ReplyProps>(
     const { body } = replyEvent?.getContent() ?? {};
     const sender = replyEvent?.getSender();
     const senderAvatarMxc = sender ? getMemberAvatarMxc(room, sender) : undefined;
-    const customUserColor = useOtherUserColor(sender ?? '', senderAvatarMxc);
+    const customUserColor = useOtherUserColor(sender ?? '', room);
     const powerTag = sender ? getMemberPowerTag?.(sender) : undefined;
     const tagColor = powerTag?.color ? accessibleTagColors?.get(powerTag.color) : undefined;