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/wireless-checkout.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>wireless-checkout</title><path d="M18,28V26A10,10,0,0,0,28,16h2A12,12,0,0,1,18,28Z"/><path d="M18,23V21a5,5,0,0,0,5-5h2A7,7,0,0,1,18,23Z"/><path d="M27,11H21V7a3,3,0,0,0-3-3H12A3,3,0,0,0,9,7v4H3a1,1,0,0,0-1,1.15L3.88,24.3a2,2,0,0,0,2,1.7H15V24H5.86L4.17,13H27ZM11,7a1,1,0,0,1,1-1h6a1,1,0,0,1,1,1v4H11Z"/></svg>