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/medium.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor"><title>Medium</title><g transform="translate(2 2) scale(0.83333)"><path d="M4.21 0A4.201 4.201 0 0 0 0 4.21v15.58A4.201 4.201 0 0 0 4.21 24h15.58A4.201 4.201 0 0 0 24 19.79v-1.093c-.137.013-.278.02-.422.02-2.577 0-4.027-2.146-4.09-4.832a7.592 7.592 0 0 1 .022-.708c.093-1.186.475-2.241 1.105-3.022a3.885 3.885 0 0 1 1.395-1.1c.468-.237 1.127-.367 1.664-.367h.023c.101 0 .202.004.303.01V4.211A4.201 4.201 0 0 0 19.79 0Zm.198 5.583h4.165l3.588 8.435 3.59-8.435h3.864v.146l-.019.004c-.705.16-1.063.397-1.063 1.254h-.003l.003 10.274c.06.676.424.885 1.063 1.03l.02.004v.145h-4.923v-.145l.019-.005c.639-.144.994-.353 1.054-1.03V7.267l-4.745 11.15h-.261L6.15 7.569v9.445c0 .857.358 1.094 1.063 1.253l.02.004v.147H4.405v-.147l.019-.004c.705-.16 1.065-.397 1.065-1.253V6.987c0-.857-.358-1.094-1.064-1.254l-.018-.004zm19.25 3.668c-1.086.023-1.733 1.323-1.813 3.124H24V9.298a1.378 1.378 0 0 0-.342-.047Zm-1.862 3.632c-.1 1.756.86 3.239 2.204 3.634v-3.634z"/></g></svg>