Add magic script

scripts/magic.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+
+handler=$(cat <<EoHndlr
+      if [ -t 2 ] && [ \$1 != pkgx ] && pkgx pkgx^1 --silent --provider \$1; then
+        if pkgx gum confirm "^^ run that with \\\`pkgx\\\`?"; then
+          pkgx "\$@"
+        else
+          return 127
+        fi
+      else
+        echo "cmd not found: \$1" >&2
+        return 127
+      fi
+EoHndlr
+)
+
+cat <<EoSH
+if [ -n "\$ZSH_VERSION" ] && [ \$(emulate) = zsh ]; then
+  eval '
+    command_not_found_handler() {
+      $handler
+    }'
+elif [ -n "\$BASH_VERSION" ] && [ "\$POSIXLY_CORRECT" != y ] ; then
+  eval '
+    command_not_found_handle() {
+      $handler
+    }'
+else
+  echo "pkgx: warning: unsupported shell" >&2
+fi
+EoSH