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/diamond-solid.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path class="cls-2" d="m29.3906,14.5269L17.4731,2.6094c-.406-.4062-.9397-.6094-1.4731-.6094s-1.0671.2031-1.4731.6094L2.6094,14.5269c-.4062.4062-.6094.9395-.6094,1.4731s.2031,1.0669.6094,1.4731l11.9175,11.9175c.406.4062.9397.6094,1.4731.6094s1.0671-.2031,1.4731-.6094l11.9175-11.9175c.4062-.4062.6094-.9395.6094-1.4731s-.2031-1.0669-.6094-1.4731Z"/> </svg>