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/stem-leaf-plot.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <title>stem-leaf-plot</title> <path d="M19,10a3,3,0,1,1,3-3A3.0033,3.0033,0,0,1,19,10Zm0-4a1,1,0,1,0,1,1A1.0011,1.0011,0,0,0,19,6Z"/> <path d="M19,19a3,3,0,1,1,3-3A3.0033,3.0033,0,0,1,19,19Zm0-4a1,1,0,1,0,1,1A1.0011,1.0011,0,0,0,19,15Z"/> <path d="M27,19a3,3,0,1,1,3-3A3.0033,3.0033,0,0,1,27,19Zm0-4a1,1,0,1,0,1,1A1.0011,1.0011,0,0,0,27,15Z"/> <path d="M19,28a3,3,0,1,1,3-3A3.0033,3.0033,0,0,1,19,28Zm0-4a1,1,0,1,0,1,1A1.0011,1.0011,0,0,0,19,24Z"/> <rect x="12" y="2" width="2" height="28"/> <path d="M7,28a3,3,0,1,1,3-3A3.0033,3.0033,0,0,1,7,28Zm0-4a1,1,0,1,0,1,1A1.0011,1.0011,0,0,0,7,24Z"/> <path d="M7,19a3,3,0,1,1,3-3A3.0033,3.0033,0,0,1,7,19Zm0-4a1,1,0,1,0,1,1A1.0011,1.0011,0,0,0,7,15Z"/> <path d="M7,10a3,3,0,1,1,3-3A3.0033,3.0033,0,0,1,7,10ZM7,6A1,1,0,1,0,8,7,1.0011,1.0011,0,0,0,7,6Z"/> </svg>