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/amazon.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor"><title>Amazon</title><g transform="translate(3.25 2) scale(0.03906)"><path d="M257.7 162.7c-48.7 1.8-169.5 15.5-169.5 117.5 0 109.5 138.3 114 183.5 43.2 6.5 10.2 35.4 37.5 45.3 46.8l56.8-56s-32.3-25.3-32.3-52.8l0-147.1C341.5 89 317 32 229.2 32 141.2 32 94.5 87 94.5 136.3l73.5 6.8c16.3-49.5 54.2-49.5 54.2-49.5 40.7-.1 35.5 29.8 35.5 69.1zm0 86.8c0 80-84.2 68-84.2 17.2 0-47.2 50.5-56.7 84.2-57.8l0 40.6zM393.7 413c-7.7 10-70 67-174.5 67S34.7 408.5 10.2 379c-6.8-7.7 1-11.3 5.5-8.3 73.3 44.5 187.8 117.8 372.5 30.3 7.5-3.7 13.3 2 5.5 12zm39.8 2.2c-6.5 15.8-16 26.8-21.2 31-5.5 4.5-9.5 2.7-6.5-3.8s19.3-46.5 12.7-55c-6.5-8.3-37-4.3-48-3.2-10.8 1-13 2-14-.3-2.3-5.7 21.7-15.5 37.5-17.5 15.7-1.8 41-.8 46 5.7 3.7 5.1 0 27.1-6.5 43.1z"/></g></svg>