fix(chat): fix import errors in Communikey renderers

- Import getTagValue from applesauce-core/helpers instead of @/lib/nostr-utils
- Fix Label size prop (use "sm" instead of "xs")
- Remove unused identifier variable in CommunikeyRenderer

src/components/nostr/kinds/CommunikeyDetailRenderer.tsx

@@ -1,5 +1,6 @@
 import type { NostrEvent } from "@/types/nostr";
-import { getTagValue, getTagValues } from "@/lib/nostr-utils";
+import { getTagValues } from "@/lib/nostr-utils";
+import { getTagValue } from "applesauce-core/helpers";
 import { useProfile } from "@/hooks/useProfile";
 import { UserName } from "../UserName";
 import { Label } from "@/components/ui/label";
@@ -164,7 +165,7 @@ export function CommunikeyDetailRenderer({
                     {section.kinds.length > 0 && (
                       <div className="flex flex-wrap gap-1">
                         {section.kinds.map((kind) => (
-                          <Label key={kind} size="xs">
+                          <Label key={kind} size="sm">
                             kind {kind}
                           </Label>
                         ))}

src/components/nostr/kinds/CommunikeyRenderer.tsx

@@ -1,5 +1,6 @@
 import type { NostrEvent } from "@/types/nostr";
-import { getTagValue, getTagValues } from "@/lib/nostr-utils";
+import { getTagValues } from "@/lib/nostr-utils";
+import { getTagValue } from "applesauce-core/helpers";
 import { BaseEventContainer, ClickableEventTitle } from "./BaseEventRenderer";
 import { useGrimoire } from "@/core/state";
 import { MessageSquare, Server } from "lucide-react";
@@ -37,11 +38,7 @@ export function CommunikeyRenderer({ event }: CommunikeyRendererProps) {
   const handleOpenChat = () => {
     if (!relays.length) return;
 
-    // Use relay'pubkey format for compatibility with NIP-29 parser
-    const primaryRelay = relays[0].replace(/^wss?:\/\//, "");
-    const identifier = `${primaryRelay}'${communityPubkey}`;
-
-    // Open chat command - parser will detect it's a Communikey
+    // Open chat with Communikey protocol
     addWindow("chat", {
       protocol: "communikey",
       identifier: {