OpenIcon gallery: all 370 icons on /openicon, with search, filters and terminal glyphs (#199)

Replaces the 47-icon sample with the whole reference set: search by name,
alias or keyword; category chips with counts; UI/brand filter; SVG,
Nerd Font, Unicode or ASCII view (the Nerd Font view uses the official
symbols subset to the set's 349 glyphs, 38 KB woff2, MIT); size and
colour; a detail panel with all three glyphs and codepoints, trademark
notes, copy SVG / <img> / icon("key"), and downloads. Ready for the
optional HQ (full-colour) style: a Simple/HQ toggle appears once icons
carry an hq field. Filters live in the URL.

Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

apps/logicsrc-web/public/openicon/set/svg/codeberg.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor"><title>Codeberg</title><g transform="translate(2 2) scale(0.83333)"><path d="M11.999.747A11.974 11.974 0 0 0 0 12.75c0 2.254.635 4.465 1.833 6.376L11.837 6.19c.072-.092.251-.092.323 0l4.178 5.402h-2.992l.065.239h3.113l.882 1.138h-3.674l.103.374h3.86l.777 1.003h-4.358l.135.483h4.593l.695.894h-5.038l.165.589h5.326l.609.785h-5.717l.182.65h6.038l.562.727h-6.397l.183.65h6.717A12.003 12.003 0 0 0 24 12.75 11.977 11.977 0 0 0 11.999.747zm3.654 19.104.182.65h5.326c.173-.204.353-.433.513-.65zm.385 1.377.18.65h3.563c.233-.198.485-.428.712-.65zm.383 1.377.182.648h1.203c.356-.204.685-.412 1.042-.648zz"/></g></svg>