Update to SkedCast

{
  "description": "Work with the SkedCast content library (DAM). Use when the user wants to find, import, or upload images and videos for posts, or asks what media is available.",
  "included_files": [],
  "name": "media-library",
  "skill_md_contents": "---\nname: media-library\ndescription: Work with the SkedCast content library (DAM). Use when the user wants to find, import, or upload images and videos for posts, or asks what media is available.\n---\n\n# Media Library\n\nThe content library holds reusable images and videos. Importing and uploading are\nwrite actions — confirm with the user first.\n\n## Finding assets\n\nCall `list_library_assets` with kind, folder, label, client, or status filters, plus\nfree-text search. To find assets that are actually publishable, filter\n`status: \"transcoded\"` — every row also carries `status`, `publishable`, and `ready`,\nso check those flags before attaching an asset to a post. For one asset in full —\nfilename, kind, size, dimensions, duration, folder, labels, alt text, pipeline\nstatus, and the per-platform readiness map — call `get_media_asset`.\n\n## Adding media\n\n- **`import_media`** — ingest an external image/video by URL. The file must already be\n  reachable at a public URL.\n- **`upload_media`** — upload a local image/video and get back a media id for\n  `create_post`. Sends the file inline (≤18 MiB) or returns a presigned URL for\n  larger files. Use this for bytes you already hold, e.g. an image just rendered in\n  the conversation.\n\n## Using media in posts\n\nPass the media id to `create_post` / `update_post`. For per-platform needs (cover\nimages, alt text), set them in `variants[].overrides` — `create_post` accepts\nper-asset alt text per platform. Check `get_capabilities` first for each platform's\nmedia rules: allowed counts, formats, file-size ceiling, duration bounds, and aspect\nratios.\n"
}