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/direction-loop-right.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <rect x="14" y="20" width="2" height="8"/> <path d="M9,4a7.0078,7.0078,0,0,1,7,7v3H14V11a5,5,0,1,0-5,5H26.1719l-4.586-4.5859L23,10l7,7-7,7-1.4141-1.4141L26.1719,18H9A7,7,0,0,1,9,4Z" transform="translate(0 0)"/> </svg>