fix: support Windows launcher import paths

bin/import-specifier.mjs

@@ -0,0 +1,7 @@
+import { join } from 'path'
+import { pathToFileURL } from 'url'
+
+export function getDistImportSpecifier(baseDir) {
+  const distPath = join(baseDir, '..', 'dist', 'cli.mjs')
+  return pathToFileURL(distPath).href
+}