The dinner detail API now sends source.url when the stored recipe link
is https to a host with no userinfo, no query (not even a bare "?") and
no fragment (not even a bare "#"), and a port the client can parse;
otherwise source.url is null. The rule matches sourceUrl() in
web/src/dinners/detail.ts, so the recipe screen links "Recipe from
{site}" in a new tab for a safe link and shows plain text otherwise.
The site-name protection in pageSiteName is unchanged.
Task: c1a97243-3e41-42fc-a1a0-1ac684ccb463
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>