fix(emoji): remove colons from emoji set title display

src/components/nostr/kinds/EmojiSetDetailRenderer.tsx

@@ -15,7 +15,7 @@ export function EmojiSetDetailRenderer({ event }: { event: NostrEvent }) {
     <div className="flex flex-col gap-4 p-4">
       {/* Header */}
       <div className="flex flex-col gap-1">
-        <h2 className="text-lg font-semibold">:{identifier}:</h2>
+        <h2 className="text-lg font-semibold">{identifier}</h2>
         <p className="text-sm text-muted-foreground">
           {emojis.length} emoji{emojis.length !== 1 ? "s" : ""} in this set
         </p>

src/components/nostr/kinds/EmojiSetRenderer.tsx

@@ -26,7 +26,7 @@ export function EmojiSetRenderer({ event }: BaseEventProps) {
           event={event}
           className="text-sm font-medium text-foreground"
         >
-          :{identifier}:
+          {identifier}
         </ClickableEventTitle>
 
         {emojis.length === 0 ? (