Add Team as an Event Attribute

[ivanskv2000]

Goal:
Allow assigning a single team to each event, similar to how tags work — but with a stricter structure and controlled creation.

Behavior

• Each event can be linked to exactly one team (or none)
• Teams are not created on-the-fly like tags — they must be created explicitly via a dedicated interface or API
• Teams have:
  • id (UUID)
  • name (required, unique)
  • description (optional)

Backend Tasks

• Create Team model:
  • id (UUID)
  • name (str, unique, required)
  • description (str, optional)
• Add team_id to the Event model (nullable FK)
• Add team serialization in event API responses (GET /events, GET /events/{id})
• Support assigning team_id in event creation and update endpoints
  • POST /events
  • PATCH /events/{id}
• Expose list of teams via:
  • GET /teams
  • POST /teams
  • DELETE /teams/{id}

Frontend Tasks

• Add dropdown/select input for one team in the event form
• Fetch list of teams from GET /teams
• Show assigned team on event detail view

Notes

• Only one team can be assigned to an event
• Team assignment is meant for organizing ownership/responsibility — not for filtering or tagging like tags