feat: add terminal-scoped transaction analytics

internal/identity/seed.go

@@ -22,7 +22,7 @@ func SeedDemo(ctx context.Context, pool *pgxpool.Pool, username, password string
 	var merchantID int64
 	err = pool.QueryRow(ctx, `SELECT m.id,m.source_key,m.display_name
 		FROM merchants m JOIN payment_sessions ps ON ps.merchant_id=m.id
-		GROUP BY m.id ORDER BY count(*) DESC,m.source_key LIMIT 1`).Scan(
+		GROUP BY m.id ORDER BY (count(DISTINCT ps.terminal_id)>1) DESC,count(*) DESC,m.source_key LIMIT 1`).Scan(
 		&merchantID, &result.MerchantSourceKey, &result.MerchantName,
 	)
 	if err != nil {