# Recommended icons for Sci-Fi Clean Icons render only via the sprite system: ``. Block content stores refs as `"pack:name"` strings (e.g. `lucide:mail`). ## Required packs Declared in `plugin.mod` `required_icon_packs` and `manifest.yaml` `required_icon_packs`. Until the loader auto-installs, install these manually before activation: | Pack | Slug | Why | |----------------|----------------|------------------------------------------------------------| | Lucide | `lucide` | Default UI icon set: nav toggle, arrows, mail, phone, home. | | Simple Icons | `simple-icons` | Brand marks in social links and the author bio hero (X, LinkedIn, GitHub). | Both are among the six packs that ship bundled with the CMS, so no download is usually needed. If a pack is missing on a fresh instance, open **Admin -> Icons**, install Lucide and Simple Icons, and enable them. ## Defaults are safe Every block that renders an icon defaults to a `lucide:` glyph, so the theme renders correctly even if Simple Icons is not yet installed (brand links simply fall back to text/label until the pack is present).