-- Add 93 octane metadata to saved stations
ALTER TABLE saved_stations
  ADD COLUMN IF NOT EXISTS has_93_octane BOOLEAN NOT NULL DEFAULT false;

ALTER TABLE saved_stations
  ADD COLUMN IF NOT EXISTS has_93_octane_ethanol_free BOOLEAN NOT NULL DEFAULT false;

-- Backfill existing rows with defaults
UPDATE saved_stations
SET has_93_octane = COALESCE(has_93_octane, false),
    has_93_octane_ethanol_free = COALESCE(has_93_octane_ethanol_free, false);
