comptime format

examples/50-smoke.sx

@@ -1212,5 +1212,16 @@ END;
         print("sprite-scale: {}\n", s.scale);
     }
 
+    // --- Comptime format ---
+    {
+        ct_body :: "hello";
+        ct_msg :: format("say: {} (len={})", ct_body, ct_body.len);
+        print("{}\n", ct_msg);
+
+        ct_num :: 42;
+        ct_num_msg :: format("n={}", ct_num);
+        print("{}\n", ct_num_msg);
+    }
+
     print("=== DONE ===\n");
 }