Offer to pick up a free agent

Sends a pickup offer from one of YOUR teams to a free agent listed in the tournament's pool. Nothing is rostered by this call - it creates a PENDING offer that the agent accepts or declines via POST /tournaments/{identifier}/free-agency/offers/{offerId}/respond.

The agent named by freeAgentId must currently be AVAILABLE, and the participant named in the body must be one of your teams and APPROVED in this tournament; you must be its captain, co-captain, or organization owner. Either condition failing answers 400 error_invalid_input or 403 respectively. An agent already rostered anywhere in this tournament cannot be offered to.

RESENDING IS SAFE BUT NOT FREE. A live PENDING offer from the same team to the same agent answers 409 error_free_agent_offer_exists - revoke it first if you want to change the message. An offer that was previously declined, revoked, or expired is reused rather than duplicated, so a team and an agent never accumulate offer rows.

Both IDs must belong to the tournament in the path; either one from a different tournament answers 404 error_tournament_not_found, identically to one that does not exist. Requires the tournaments actor free_agency capability.