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/settings.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><title>Settings</title><path d="M9.37 4.98L10.71 4.61L10.79 2.07L13.21 2.07L13.29 4.61L15.11 5.17L16.31 5.86L18.17 4.13L19.87 5.83L18.14 7.69L19.02 9.37L19.39 10.71L21.93 10.79L21.93 13.21L19.39 13.29L18.83 15.11L18.14 16.31L19.87 18.17L18.17 19.87L16.31 18.14L14.63 19.02L13.29 19.39L13.21 21.93L10.79 21.93L10.71 19.39L8.89 18.83L7.69 18.14L5.83 19.87L4.13 18.17L5.86 16.31L4.98 14.63L4.61 13.29L2.07 13.21L2.07 10.79L4.61 10.71L5.17 8.89L5.86 7.69L4.13 5.83L5.83 4.13L7.69 5.86Z"/><circle cx="12" cy="12" r="3"/></svg>