feat(circle): "+N" members modal when a circle has more than 5 sites
The Circle header capped at 5 chips and otherwise showed only a dead count pill.
Now the count pill is a button that opens a modal listing every circle member
(avatar + name + link to their site). CSS-only (hidden-checkbox toggle) so it
needs no JS — CSP- and htmx-safe.
- src/views/pages/circle-feed.ejs — the >5 branch is now a clickable count pill +
a member modal (backdrop + card + member list); modal/button CSS added to the
page <style>
- src/services/i18n.js — new cfeed.close label (nl/en/de)
Co-Authored-By: Claude <noreply@…>