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-details-reference.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <rect x="16" y="28" width="7" height="2"/> <rect x="16" y="24" width="14" height="2"/> <rect x="16" y="20" width="14" height="2"/> <polygon points="4 20 4 22 8.586 22 2 28.586 3.414 30 10 23.414 10 28 12 28 12 20 4 20"/> <path d="M28,8H16L12.5859,4.5859A2.0007,2.0007,0,0,0,11.1716,4H4A2,2,0,0,0,2,6V18H4V6h7.1716l3.4141,3.4141L15.1716,10H28v8h2V10A2,2,0,0,0,28,8Z"/> </svg>