-- Multi-team missions: a mission can have N teams, each tagged with a
-- purpose (research / coding / security / benchmark / etc). The wizard
-- picks templates per purpose; on_launch mints one team per (purpose,
-- template) pick and records the link here.
--
-- missions.team_id stays around as a legacy pointer to the FIRST minted
-- team for single-team surfaces (Team tab default view, etc). It is
-- redundant with (mission_teams WHERE mission_id = X LIMIT 1) but
-- preserving it avoids a broader refactor in this slice.

BEGIN;

CREATE TABLE mission_teams (
    mission_id UUID NOT NULL REFERENCES missions(id) ON DELETE CASCADE,
    team_id    UUID PRIMARY KEY REFERENCES teams(id) ON DELETE CASCADE,
    purpose    TEXT NOT NULL,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX mission_teams_mission_idx ON mission_teams (mission_id);

COMMIT;