-- P7: Technische Schuld — item_kind / action_kind tech_debt

ALTER TABLE actions DROP CONSTRAINT IF EXISTS actions_action_kind_check;
ALTER TABLE actions
    ADD CONSTRAINT actions_action_kind_check
        CHECK (action_kind IN ('delivery', 'planning', 'review', 'bug', 'issue', 'tech_debt'));

ALTER TABLE backlog_items DROP CONSTRAINT IF EXISTS backlog_items_item_kind_check;
ALTER TABLE backlog_items
    ADD CONSTRAINT backlog_items_item_kind_check
        CHECK (item_kind IN ('story', 'bug', 'issue', 'epic', 'tech_debt'));