Hono-based API server providing real-time chat functionality for travel planning.

• index.ts - Main Hono application with HTTP endpoints
• database/migrations.ts - SQLite table setup
• database/queries.ts - Database query functions

• GET / - Serves the chat interface with initial message data
• GET /api/messages - Returns recent messages (JSON)
• POST /api/messages - Creates new message (JSON)
• GET /api/messages/stream - Server-sent events for real-time updates
• GET /frontend/* - Serves frontend static files
• GET /shared/* - Serves shared utility files

CREATE TABLE travel_chat_messages_1 (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  author TEXT NOT NULL,
  content TEXT NOT NULL,
  timestamp TEXT NOT NULL,
  created_at INTEGER NOT NULL
);

Uses Server-Sent Events (SSE) to push new messages to connected clients every 2 seconds.