index

Application entry point for the Ex Astra Discord bot.

Startup sequence:

1. Loads environment variables via dotenv/config.
2. Initialises the PostgreSQL connection (initializeDataSource).
3. Dynamically imports every command module from commands/<category>/*.js and registers it on the client.
4. Dynamically imports every event handler from events/*.js.
5. Logs the client in with DISCORD_TOKEN.