Licensing tiers, team management, and Discord bot

Features

• Added licensing tier support, enabling differentiated feature access based on subscription level.
• Introduced team defaults and invite flows, making it easier to onboard new members with pre-configured settings.
• Added a Discord bot integration for interacting with agents directly from Discord.

Improvements

• Refactored the coordinator for improved reliability and maintainability.
• Enhanced job and thread context handling to better track execution state across agent runs.
• Updated the web dashboard and settings views with new controls and improved layout.