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-alt.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M16,23a1.5,1.5,0,1,0,1.5,1.5A1.5,1.5,0,0,0,16,23Z"/> <rect x="15" y="12" width="2" height="9"/> <path d="M29,30H3a1,1,0,0,1-.8872-1.4614l13-25a1,1,0,0,1,1.7744,0l13,25A1,1,0,0,1,29,30ZM4.6507,28H27.3493l.002-.0033L16.002,6.1714h-.004L4.6487,27.9967Z"/> </svg>