Popular v0.5.0

Added

• Computed home-page stats: @count:<section> (and @count:<section>:rounded)
  render a live entry count for any section, generalizing @pastEventCount.
  Factored into a reusable resolver (Hugo partials/stat-value.html, Astro
  src/lib/stats.ts).
• Organizer profile pages: each organizer entry renders a bio-card profile
  page (Hugo organizers/single.html, Astro organizers/[slug]), and
  organizer cards link to it. New eyebrowOrganizer UI string.
• Back link to the parent section on nested pages, labeled by the parent's
  optional shortTitle front-matter field or its title. Astro serves pages
  through a rest-param route to support nested page ids.
• Renameable content sections: [params.sections] (Hugo) / SECTIONS_MAP
  (Astro) point post-author bylines (authors) and the homepage team grid
  (team) at differently-named sections, for communities whose people are
  not "organizers" or whose blog is not written by "authors". No template
  overrides needed.

Fixed

• Post cards on date-less pages no longer render "Jan 0001" or a stray
  eyebrow separator (affects sections of static pages rendered through the
  default list).