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/firefox.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor"><title>Firefox</title><g transform="translate(2 2) scale(0.83333)"><path d="M20.452 3.445a11.002 11.002 0 00-2.482-1.908C16.944.997 15.098.093 12.477.032c-.734-.017-1.457.03-2.174.144-.72.114-1.398.292-2.118.56-1.017.377-1.996.975-2.574 1.554.583-.349 1.476-.733 2.55-.992a10.083 10.083 0 013.729-.167c2.341.34 4.178 1.381 5.48 2.625a8.066 8.066 0 011.298 1.587c1.468 2.382 1.33 5.376.184 7.142-.85 1.312-2.67 2.544-4.37 2.53-.583-.023-1.438-.152-2.25-.566-2.629-1.343-3.021-4.688-1.118-6.306-.632-.136-1.82.13-2.646 1.363-.742 1.107-.7 2.816-.242 4.028a6.473 6.473 0 01-.59-1.895 7.695 7.695 0 01.416-3.845A8.212 8.212 0 019.45 5.399c.896-1.069 1.908-1.72 2.75-2.005-.54-.471-1.411-.738-2.421-.767C8.31 2.583 6.327 3.061 4.7 4.41a8.148 8.148 0 00-1.976 2.414c-.455.836-.691 1.659-.697 1.678.122-1.445.704-2.994 1.248-4.055-.79.413-1.827 1.668-2.41 3.042C.095 9.37-.2 11.608.14 13.989c.966 5.668 5.9 9.982 11.843 9.982C18.62 23.971 24 18.591 24 11.956a11.93 11.93 0 00-3.548-8.511z"/></g></svg>