-- ============================================================
-- PHASE 5 DELTA — run this ONLY if you already deployed Phases 1-4
-- and imported an earlier schema.sql. If you're installing fresh,
-- use database/schema.sql (already includes this) and skip this file.
--
-- What this does: adds a `review_note` column to `airtime_requests`
-- so editors can explain WHY a request was rejected (the table didn't
-- have one before — airtime requests were originally designed as a
-- simple approve/reject binary back in Phase 0). This is purely
-- additive: nullable column, no data loss, safe to run on a live
-- database with existing airtime_requests rows.
-- ============================================================

ALTER TABLE airtime_requests
  ADD COLUMN review_note TEXT NULL AFTER status;