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/tornado-warning.svg

@@ -0,0 +1 @@
+<svg id="Layer_1" data-name="Layer 1" width="32" height="32" viewBox="0 0 32 32"> <rect x="2" y="4" width="16" height="2"/> <rect x="4" y="8" width="12" height="2"/> <rect x="2" y="12" width="12" height="2"/> <rect x="2" y="16" width="10" height="2"/> <rect x="4" y="20" width="8" height="2"/> <rect x="8" y="24" width="6" height="2"/> <rect x="12" y="28" width="4" height="2"/> <path id="_inner-path_" data-name="&lt;inner-path&gt;" class="cls-1" d="M23.75,10h-1.5V6h1.5ZM23,11a1,1,0,1,0,1,1A1,1,0,0,0,23,11Z" transform="translate(0 0)"/> <path d="M29.9115,13.9355,23.6284,2.3706a.7181.7181,0,0,0-1.2568,0L16.0885,13.9355A.72.72,0,0,0,16.72,15H29.28A.72.72,0,0,0,29.9115,13.9355ZM22.25,6h1.5v4h-1.5ZM23,13a1,1,0,1,1,1-1A1,1,0,0,1,23,13Z" transform="translate(0 0)"/> </svg>