Remove LocalRelay, use cache-first pattern in hooks directly

Simplified architecture - removed the fake "local relay" approach entirely:
- Deleted LocalRelay.ts (didn't work with NPool)
- Hooks now check IndexedDB directly before network queries
- DB version bumped to v3 to trigger clean migration

How it works now:
1. useAuthor checks eventStore.getManyProfiles() first
2. useFollowList checks eventStore.query() first  
3. useFeed checks eventStore.query() first
4. If cached: return instantly + background refresh
5. If not cached: fetch from network
6. Events stream to IndexedDB as they arrive

This is the standard offline-first pattern used by production apps.

NOTE: Users may need to hard refresh (Ctrl+Shift+R) to clear old build cache.

Co-authored-by: shakespeare.diy <assistant@shakespeare.diy>

src/lib/LocalRelay.ts

@@ -1,51 +0,0 @@
-import type { NostrEvent, NostrFilter } from '@nostrify/nostrify';
-import { eventStore } from './eventStore';
-
-/**
- * LocalRelay implements a Nostr relay interface backed by IndexedDB.
- * This allows querying locally cached events without network requests.
- */
-export class LocalRelay {
-  readonly url = 'local://indexeddb';
-
-  async query(filters: NostrFilter[]): Promise<NostrEvent[]> {
-    try {
-      const events = await eventStore.query(filters);
-      // Remove the _relays property before returning
-      return events.map(({ _relays, ...event }) => event as NostrEvent);
-    } catch (error) {
-      console.error('[LocalRelay] Query error:', error);
-      return [];
-    }
-  }
-
-  async event(event: NostrEvent): Promise<void> {
-    try {
-      await eventStore.addEvent(event, ['local://indexeddb']);
-    } catch (error) {
-      console.error('[LocalRelay] Event storage error:', error);
-    }
-  }
-
-  async *req(filters: NostrFilter[]): AsyncGenerator<NostrEvent> {
-    try {
-      const events = await this.query(filters);
-      for (const event of events) {
-        yield event;
-      }
-    } catch (error) {
-      console.error('[LocalRelay] Subscription error:', error);
-    }
-  }
-
-  // Mock methods to satisfy relay interface
-  async connect(): Promise<void> {
-    // IndexedDB is always "connected"
-  }
-
-  async close(): Promise<void> {
-    // No-op for IndexedDB
-  }
-}
-
-export const localRelay = new LocalRelay();

src/lib/eventStore.ts

@@ -1,7 +1,7 @@
 import type { NostrEvent, NostrFilter } from '@nostrify/nostrify';
 
 const DB_NAME = 'mew-events';
-const DB_VERSION = 2;
+const DB_VERSION = 3; // Increment to force migration from broken v2
 
 // Separate stores for different event types (like Jumble does)
 const StoreNames = {