Inkbound 1.3.0

Books can now carry cover art, and they show it off properly on an e-reader.

• cover: frontmatter field — point it at an image in the vault (a
  path, a bare filename, a [[wikilink]], or an ![[embed]]) or at a remote
  URL, and the export embeds it as the EPUB 3 cover (properties="cover-image"
  • <meta name="cover">), so the Boox library shelf shows the artwork
    instead of a placeholder.
• First-image fallback — no cover: (or legacy coverUrl:) at all? The
  first image embed in the metadata note (outside code fences) becomes the
  cover, so existing vaults gain covers with zero frontmatter changes.
• Cover page — books with a cover open on a full-page, centered cover
  document as the first spine item. The cover page never appears in the table
  of contents; a landmarks entry keeps it reachable (epubcheck-clean under
  EPUB 3.3 rules, verified with epubcheck 5.3.0).
• Formats — png, jpg/jpeg, and webp are accepted as covers (all
  EPUB 3.3 core media types); anything else degrades with a warning, and a
  broken cover: reference never fails an export — the book still builds,
  coverless, with a warning naming the file.
• cover: takes precedence over the legacy coverUrl: when both are
  present; coverUrl: alone keeps working exactly as before.

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Install manually by downloading the assets below into <vault>/.obsidian/plugins/inkbound/, then enable Inkbound in Settings → Community plugins.