This directory contains the backend code for the real-time chat application.

• index.ts: Main entry point with Hono setup, WebSocket handling, and HTTP routes
• database/: Database setup and queries
  • migrations.ts: Schema definitions
  • queries.ts: Database query functions

The WebSocket connection handles the following message types:

• join: User joining the chat with a username
• message: User sending a message

• message: New message from a user
• user_joined: Notification when a user joins
• user_left: Notification when a user leaves
• history: Message history when a user first connects