-- Persist the matcher-selected arena through acceptance and allocation. NULL
-- remains valid for legacy/casual rows while ranked proposals always write a
-- server-owned floor-goal path.
ALTER TABLE proposals
    ADD COLUMN match_arena_path TEXT;

ALTER TABLE proposals
    ADD CONSTRAINT proposals_ranked_arena_path
    CHECK (
        playlist <> 'ranked' OR (
            match_arena_path IS NOT NULL AND
            match_arena_path IN (
                'res://scenes/arena_01.tscn',
                'res://scenes/arena_02.tscn',
                'res://scenes/arena_03.tscn'
            )
        )
    ) NOT VALID;

ALTER TABLE matches
    ADD COLUMN arena_path TEXT;

ALTER TABLE matches
    ADD CONSTRAINT matches_ranked_arena_path
    CHECK (
        playlist <> 'ranked' OR (
            arena_path IS NOT NULL AND
            arena_path IN (
                'res://scenes/arena_01.tscn',
                'res://scenes/arena_02.tscn',
                'res://scenes/arena_03.tscn'
            )
        )
    ) NOT VALID;