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/cloud-registry.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M28,30H23a2.0023,2.0023,0,0,1-2-2V23a2.0023,2.0023,0,0,1,2-2h5a2.0023,2.0023,0,0,1,2,2v5A2.0023,2.0023,0,0,1,28,30Zm-5-7h-.0012L23,28h5V23Z"/> <path d="M16,23H11a2.0023,2.0023,0,0,1-2-2V11a2.0023,2.0023,0,0,1,2-2H21a2.0023,2.0023,0,0,1,2,2v5H21V11H11V21h5Z"/> <path d="M16,30H4a2.0023,2.0023,0,0,1-2-2V4A2.0023,2.0023,0,0,1,4,2H28a2.0023,2.0023,0,0,1,2,2V16H28V4H4V28H16Z"/> </svg>