Exact Brandkit logo-export payloads

Use with logo-export --input:

{
  "name": "northline-symbol",
  "logo_svg": "https://replace-with-selected-recraft-result.svg",
  "delivery": "user",
  "replacements": [],
  "include_monochrome": false
}

For an explicitly requested one-color export, add "single_color": "#101820".

For explicitly requested black/white production variants, set "include_monochrome": true and add "primary_color": "#00AEEF".

Keep returned SVG and PNG files in "$BRANDKIT_WORKDIR/logo". Deliver their absolute paths. Use the local PNG for later --image generation references; keep the SVG as the editable geometry source. Never label a rasterized .png as SVG.