feat: add miro record as mkdir -p

internal/miro/record.go

@@ -0,0 +1,22 @@
+package miro
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+// Record creates the requested directory path under the resolved test directory.
+func Record(path string) (string, error) {
+	testDir, err := ResolveTestDir()
+	if err != nil {
+		return "", fmt.Errorf("failed to resolve test directory: %v", err)
+	}
+
+	target := filepath.Join(testDir, path)
+	if err := os.MkdirAll(target, 0o755); err != nil {
+		return "", err
+	}
+
+	return target, nil
+}