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-dissatisfied.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>face--dissatisfied</title><path d="M16,2A14,14,0,1,0,30,16,14,14,0,0,0,16,2Zm0,26A12,12,0,1,1,28,16,12,12,0,0,1,16,28Z" transform="translate(0)"/><path d="M11.5,11A2.5,2.5,0,1,0,14,13.5,2.5,2.5,0,0,0,11.5,11Z" transform="translate(0)"/><path d="M20.5,11A2.5,2.5,0,1,0,23,13.5,2.5,2.5,0,0,0,20.5,11Z" transform="translate(0)"/><path d="M16,19a8,8,0,0,0-6.85,3.89l1.71,1a6,6,0,0,1,10.28,0l1.71-1A8,8,0,0,0,16,19Z" transform="translate(0)"/></svg>