Fix profile cache invalidation after editing

Invalidate the in-memory profile cache for the user's pubkey after
publishing a new kind 0 event, so the updated profile reflects immediately.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/profile/ProfileView.tsx

@@ -2,7 +2,7 @@ import { useEffect, useState } from "react";
 import { NDKEvent } from "@nostr-dev-kit/ndk";
 import { useUIStore } from "../../stores/ui";
 import { useUserStore } from "../../stores/user";
-import { useProfile } from "../../hooks/useProfile";
+import { useProfile, invalidateProfileCache } from "../../hooks/useProfile";
 import { fetchUserNotes, publishProfile } from "../../lib/nostr";
 import { shortenPubkey } from "../../lib/utils";
 import { NoteCard } from "../feed/NoteCard";
@@ -25,6 +25,7 @@ function EditProfileForm({ pubkey, onSaved }: { pubkey: string; onSaved: () => v
     setSaving(true);
     setError(null);
     try {
+      invalidateProfileCache(pubkey);
       await publishProfile({
         name: name.trim() || undefined,
         display_name: displayName.trim() || undefined,

src/hooks/useProfile.ts

@@ -4,6 +4,11 @@ import { fetchProfile } from "../lib/nostr";
 const profileCache = new Map<string, any>();
 const pendingRequests = new Map<string, Promise<any>>();
 
+export function invalidateProfileCache(pubkey: string) {
+  profileCache.delete(pubkey);
+  pendingRequests.delete(pubkey);
+}
+
 export function useProfile(pubkey: string) {
   const [profile, setProfile] = useState<any>(profileCache.get(pubkey) ?? null);