updates

kernel/bin/tty

@@ -0,0 +1,14 @@
+/** Shared helpers for drive-resident /bin scripts (prepended before each command). */
+function bareStdin(ctx) {
+  return typeof ctx.shellStdin === 'string' ? ctx.shellStdin : ''
+}
+
+async function run(ctx, argv) {
+  const tty = globalThis.process?.stdout?.isTTY
+  if (tty) {
+    ctx.console.log('/dev/tty')
+  } else {
+    ctx.console.log('not a tty')
+    ctx.exitCode = 1
+  }
+}