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/face-cool.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>face--cool</title><path d="M16,24a8,8,0,0,0,6.85-3.89l-1.71-1a6,6,0,0,1-10.28,0l-1.71,1A8,8,0,0,0,16,24Z" transform="translate(0)"/><path d="M16,2A14,14,0,1,0,30,16,14,14,0,0,0,16,2Zm0,2a12,12,0,0,1,10.89,7H25a1,1,0,0,0-1-1H8a1,1,0,0,0-1,1H5.11A12,12,0,0,1,16,4Zm0,24A12,12,0,0,1,4,16a11.86,11.86,0,0,1,.4-3H7v2a2,2,0,0,0,2,2h3.31a2,2,0,0,0,2-1.67L14.83,12h2.34l.55,3.33a2,2,0,0,0,2,1.67H23a2,2,0,0,0,2-2V13h2.6a11.86,11.86,0,0,1,.4,3A12,12,0,0,1,16,28Z" transform="translate(0)"/></svg>