Update next-test to print remaining todo tests

Shows the next test to work on followed by a list of all remaining
todo tests sorted by query file size.

Author: claude

cmd/next-test/main.go

@@ -71,5 +71,12 @@ func main() {
 	})
 
 	next := todoTests[0]
-	fmt.Printf("%s (%d bytes)\n", next.Name, next.QueryLen)
+	fmt.Printf("Next: %s (%d bytes)\n", next.Name, next.QueryLen)
+
+	if len(todoTests) > 1 {
+		fmt.Printf("\nRemaining todo tests (%d):\n", len(todoTests)-1)
+		for _, t := range todoTests[1:] {
+			fmt.Printf("  %s (%d bytes)\n", t.Name, t.QueryLen)
+		}
+	}
 }