-- Runtime repository projection. Each root is a domain collection and each
-- row is independently addressable, so PostgreSQL can be promoted from the
-- legacy snapshot without exposing a JSON blob as the only source of truth.
CREATE TABLE IF NOT EXISTS miragenflow_domain_rows (
  root_key TEXT NOT NULL,
  entity_id TEXT NOT NULL,
  shape TEXT NOT NULL CHECK (shape IN ('map', 'array', 'scalar')),
  payload JSONB,
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  PRIMARY KEY (root_key, entity_id)
);
CREATE INDEX IF NOT EXISTS miragenflow_domain_rows_updated_idx
  ON miragenflow_domain_rows(updated_at DESC);