Layouts referenced /og.png but no file was committed — social previews showed broken-image placeholders. Now ships a branded SVG card per site (1200x630) with the product glyph + Fraunces 900 wordmark + italic tagline + “by ferrlabs” subtitle.
Modern previewers (Slack, Discord, LinkedIn, X, Telegram, iMessage) render SVG fine. A raster PNG fallback can come later via a build step for older crawlers — tracked separately.