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/warning-hex.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M16,21a1.5,1.5,0,1,0,1.5,1.5A1.5,1.5,0,0,0,16,21Z"/> <rect x="15" y="8" width="2" height="10"/> <path d="M23,29H9a1,1,0,0,1-.8638-.4961l-7-12a1,1,0,0,1,0-1.0078l7-12A1,1,0,0,1,9,3H23a1,1,0,0,1,.8638.4961l7,12a1,1,0,0,1,0,1.0078l-7,12A1,1,0,0,1,23,29ZM9.5742,27H22.4258l6.4165-11L22.4258,5H9.5742L3.1577,16Z"/> </svg>