CREATE TABLE IF NOT EXISTS print_capture_diagnostics (
  id uuid PRIMARY KEY,
  tenant_id text NOT NULL REFERENCES tenants(id),
  site_id uuid NOT NULL REFERENCES sites(id),
  station_id uuid NOT NULL REFERENCES stations(id),
  device_id uuid NOT NULL REFERENCES devices(id),
  operator_subject text NOT NULL,
  source text NOT NULL,
  stream_format text NOT NULL,
  byte_count bigint NOT NULL CHECK (byte_count >= 0),
  barcode_count integer NOT NULL CHECK (barcode_count >= 0),
  forwarded boolean NOT NULL,
  failure_kind text,
  app_version text NOT NULL,
  captured_at timestamptz NOT NULL,
  received_at timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS idx_print_capture_diagnostics_tenant_time
  ON print_capture_diagnostics(tenant_id, captured_at DESC);