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/folder-off.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>folder--off</title><path d="M28,8H25.4141L30,3.4141,28.5859,2,2,28.5859,3.4141,30l2-2H28a2,2,0,0,0,2-2V10A2,2,0,0,0,28,8Zm0,18H7.4141l16-16H28Z"/><path d="M4,6h7.1716l3.4141,3.4141L15.1716,10H18V8H16L12.5859,4.5859A2.0007,2.0007,0,0,0,11.1716,4H4A2,2,0,0,0,2,6V24H4Z"/></svg>