Teams V2, onboarding wizard, and chat improvements

Features

• Added Teams V2 with member invitations, role-based access, and tier gating to control team capabilities by license level.
• Introduced a guided setup wizard to walk new users through onboarding steps 0–3, including upgrade prompts for Auxie and updated UX copy.
• Added support for team-scoped agents, allowing agents to be owned and managed at the team level rather than only at the user level.
• Added the ability to uninstall a license, enforce free-tier restrictions, and prevent unauthorized admin role promotions.

Improvements

• Improved chat usability, including secrets handling and Discord integration enhancements.
• Reduced the number of available DaisyUI themes to streamline the UI appearance options.
• Added agent online status reset to ensure accurate presence state.

Internal

• Added plan documents for credentials, settings permissions, and Teams V2 to guide upcoming development.
• Added onboarding agent planning documents for the wizard setup flow.