-- 060: Multi-year filing orders
--
-- When a customer orders the same service slug (typically fcc-499a)
-- for multiple reporting years at once — e.g., catching up on 3 years
-- of past-due 499-A filings simultaneously — they receive a 15%
-- multi-year discount (same magnitude as the existing bundle discount
-- for multi-slug orders).
--
-- We represent this as a single compliance_order with a multi_year_filings
-- array; the handler runs N Playwright sessions against USAC, one per
-- year, and records N confirmation numbers.

ALTER TABLE compliance_orders
  ADD COLUMN IF NOT EXISTS multi_year_filings INT[];

-- Per-year confirmation numbers captured after each sub-filing succeeds.
-- Shape: [{"year":2023,"confirmation":"X"},{"year":2024,"confirmation":"Y"}]
ALTER TABLE compliance_orders
  ADD COLUMN IF NOT EXISTS multi_year_confirmations JSONB DEFAULT '[]'::jsonb;

-- Discount bookkeeping: when multi_year_filings has 2+ entries, the
-- resolver applies a 15% discount on top of the N × price base.
ALTER TABLE compliance_orders
  ADD COLUMN IF NOT EXISTS multi_year_discount_pct NUMERIC(4,1);