wiki: add Carbon Design System icons (2673) + pictograms (1000)

- 2673 SVG icons from @carbon/icons v11.82.0 (~2.5 MB)
- 1000 SVG pictograms from Carbon Design System (~2.0 MB)
- Updated 00-overview.md with asset structure and category listing

All icons: 32x32, fill: currentColor, optimized SVG
All pictograms: 24x24, fill: currentColor, SVG

assets/icons/carbon/ticket.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>ticket</title><path d="M29,14a1,1,0,0,0,1-1V8a2,2,0,0,0-2-2H4A2,2,0,0,0,2,8v5a1,1,0,0,0,1,1,2,2,0,0,1,0,4,1,1,0,0,0-1,1v5a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V19a1,1,0,0,0-1-1,2,2,0,0,1,0-4Zm-1,5.87V24H21V21H19v3H4V19.87a4,4,0,0,0,0-7.74V8H19v3h2V8h7v4.13a4,4,0,0,0,0,7.74Z" transform="translate(0 0)"/><rect x="19" y="13" width="2" height="6"/></svg>