diff --git a/single-scripts/cal-node.ts b/single-scripts/cal-node.ts
new file mode 100755
index 0000000..d0ce952
--- /dev/null
+++ b/single-scripts/cal-node.ts
@@ -0,0 +1,12 @@
+#!/usr/bin/env runts -- --runtime-bun
+
+const { spawn } = require('node:child_process');
+
+const _child = spawn('cal', ['-3'], {
+    shell: true,
+    // stdio reference: https://nodejs.org/api/child_process.html#optionsstdio
+    stdio: ['inherit', 'inherit', 'inherit']
+});
+
+// @SCRIPT-SIGNATURE-V1: yk-r1.ES256.20260111T104456+08:00.MEYCIQCLBioJmr0B4ZbAlBYV
+// Fo+rB6ruDJhpZv6QffcZZsb3WQIhANjQqzH8PcBAEC24wRRX+ow4cX/C9L4RwXVEHahyrhbz