feat: Implement a new chat widget with enhanced encryption handling and supporting utility scripts, replacing the old chat page.

clean-old-messages.ts

@@ -0,0 +1,14 @@
+import { db, chatMessages } from './src/db';
+import { isNull } from 'drizzle-orm';
+
+async function cleanOldMessages() {
+  console.log('Deleting old RSA-encrypted messages...');
+  
+  const result = await db.delete(chatMessages)
+    .where(isNull(chatMessages.senderChatPublicKey));
+  
+  console.log('Deleted old messages. Now only E2E encrypted messages remain.');
+  process.exit(0);
+}
+
+cleanOldMessages().catch(console.error);