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/windy-snow.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>windy--snow</title><path d="M25,28a5.0057,5.0057,0,0,1-5-5h2a3,3,0,1,0,3-3H6V18H25a5,5,0,0,1,0,10Z"/><path d="M23,15H10V13H23a3,3,0,1,0-3-3H18a5,5,0,1,1,5,5Z"/><rect x="11" y="23" width="2" height="2"/><rect x="13" y="25" width="2" height="2"/><rect x="15" y="27" width="2" height="2"/><rect x="15" y="23" width="2" height="2"/><rect x="11" y="27" width="2" height="2"/><rect x="6" y="4" width="2" height="2"/><rect x="8" y="6" width="2" height="2"/><rect x="10" y="8" width="2" height="2"/><rect x="10" y="4" width="2" height="2"/><rect x="6" y="8" width="2" height="2"/><rect x="2" y="26" width="2" height="2"/><rect x="4" y="28" width="2" height="2"/><rect x="6" y="30" width="2" height="2"/><rect x="6" y="26" width="2" height="2"/><rect x="2" y="30" width="2" height="2"/></svg>