-- Reversal of 0001_phase0_foundation.sql.
--
-- Run manually (it is NOT applied automatically) if the Phase-0 foundation
-- schema needs to be rolled back. Drops the new tables. The added `deleted_at`
-- columns on existing tables are left in place by default because they are
-- inert (nullable, unused unless the DELETE handlers are changed) and dropping
-- columns requires SQLite >= 3.35; uncomment the DROP COLUMN lines to remove
-- them on a modern SQLite.

DROP TABLE IF EXISTS relationship_edges;
DROP TABLE IF EXISTS interaction_log;
DROP TABLE IF EXISTS entity_links;
DROP TABLE IF EXISTS canonical_entities;

-- Requires SQLite >= 3.35.0. Safe to leave the columns if unsure.
-- ALTER TABLE contacts       DROP COLUMN deleted_at;
-- ALTER TABLE organizations  DROP COLUMN deleted_at;
-- ALTER TABLE opportunities  DROP COLUMN deleted_at;
-- ALTER TABLE communications DROP COLUMN deleted_at;
-- ALTER TABLE lp_profiles    DROP COLUMN deleted_at;

-- Forget the migration so it can be re-applied:
DELETE FROM schema_migrations WHERE filename = '0001_phase0_foundation.sql';