External Fonts
Declare custom fonts under template.fonts. The value is a map keyed by family name, and each
entry takes the following fields:
src— URL of the font file to load at render time (TTF or OTF).weight— one or more whitespace-separated CSS weights the file supplies (default"400"). For a variable font that covers regular and bold, use"400 700".style—"normal"or"italic"(default"normal").
Reference a declared family from any block’s config.typography.family. Anything that does not
set a family falls back to the bundled typography family.
The example fetches “Lobster” from a public CDN at render time, so the API must have network
access and allow that host. It allows any public host by default; tighten this via
ASSET_ALLOWED_DOMAINS.