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/repeat.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M6,6H26.1719l-3.586-3.5859L24,1l6,6-6,6-1.4141-1.4141L26.1719,8H6v7H4V8A2.0024,2.0024,0,0,1,6,6Z"/> <path d="M9.4141,20.4141,5.8281,24H26V17h2v7a2.0024,2.0024,0,0,1-2,2H5.8281L9.414,29.5859,8,31,2,25l6-6Z"/> </svg>