-- Add CDI yield support to accounts
ALTER TABLE accounts
    ADD COLUMN IF NOT EXISTS yield_type VARCHAR(10) NOT NULL DEFAULT 'none'
        CHECK (yield_type IN ('none', 'cdi', 'variable')),
    ADD COLUMN IF NOT EXISTS last_yield_date DATE;

-- Extend transactions.source check to allow 'yield'
ALTER TABLE transactions DROP CONSTRAINT IF EXISTS transactions_source_check;
ALTER TABLE transactions
    ADD CONSTRAINT transactions_source_check
        CHECK (source IN ('manual', 'import', 'yield'));