Render Write Default Filename

render --write picks a default filename without a format flag

terragrunt render --write failed with is a directory unless it was paired with --format or --json. Only those flags set the default filename, so a bare --write had no output path and Terragrunt tried to write to the unit directory itself.

The default now follows the format in use. terragrunt render --write writes terragrunt.rendered.hcl next to the unit configuration, and --json or --format=json writes terragrunt.rendered.json. An explicit --out still takes precedence.