Update to MixMatter

{
  "description": "Create a sticker, emoji-like asset, reaction cutout, label, or die-cut graphic from a user-supplied image. Use when the output should be a reusable isolated asset with optional outline, shadow, and transparent background. Do not use for caption-led memes, broad editorial image reconstruction, or animated/video output.",
  "included_files": [
    {
      "relative_path": "agents/openai.yaml",
      "size_in_bytes": 99
    }
  ],
  "name": "mixmatter-sticker",
  "skill_md_contents": "---\r\nname: mixmatter-sticker\ndescription: >-\n  Create a sticker, emoji-like asset, reaction cutout, label, or die-cut graphic from a user-supplied image. Use when the\n  output should be a reusable isolated asset with optional outline, shadow, and transparent background. Do not use for\n  caption-led memes, broad editorial image reconstruction, or animated/video output.\n---\r\n\r\n# MixMatter Sticker 3.0\n\nCreate a legible, reusable small-format asset while preserving the source subject's identity.\n\n## Before generation\n\n- Require a source image unless the user explicitly asks for a new sticker from text.\n- Identify the subject boundary, identity-bearing details, fragile thin parts, and any source text.\n- Respect exact user choices from Matter Studio. If none were supplied, use `Clean Cutout`, a medium white edge, a subtle shadow, and a transparent background.\n- Ask only when the requested crop would remove identity-critical content or when exact wording is missing.\n\n## Construction rules\n\n- Isolate one clear subject or coherent subject group.\n- Simplify internal detail enough to read at chat-sticker size without turning the subject generic.\n- Use a continuous, optically even outline. Expand narrow gaps where necessary so the edge does not collapse.\n- Keep shadows short, soft, and secondary. Do not use a large photographic drop shadow.\n- For transparent output, keep the canvas genuinely transparent outside the sticker silhouette.\n- Preserve source text exactly. Never substitute plausible-looking pseudo-text.\n- Avoid adding decorative icons, sparkles, facial features, or props unless the user asks.\n\n## Mode interpretations\n\n- `Clean Cutout`: faithful subject, tidy silhouette, minimal stylization.\n- `Emoji`: stronger expression and simplified forms, but preserve recognizability.\n- `Label`: flatter print treatment with a compact badge-like silhouette.\n- `Die-cut`: tactile print edge, optional slight registration variation, still production-clean.\n\n## Delivery check\n\nVerify the subject is not clipped, the border is consistent, transparent regions are clean, small details survive, and the result remains readable at 128 px.\n"
}