Develop a Discord bot with custom commands. Include features like welcome messages, role assignment, and automated moderation. Ability to respond to user messages and perform actions based on commands. Integrate simple database support to store user data or settings. Ensure the bot runs smoothly on a server and can be easily updated. Provide clean, well-documented code so it can be maintained or extended in the future. Additional Notes: I am looking for a professional Node.js developer who can deliver a reliable and functional bot that enhances the server experience.