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/instance-virtual.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <circle cx="7" cy="23" r="1"/> <rect x="2" y="6" width="4" height="2"/> <rect x="8" y="6" width="4" height="2"/> <rect x="14" y="6" width="4" height="2"/> <rect x="20" y="6" width="4" height="2"/> <rect x="26" y="6" width="4" height="2"/> <path d="M28,28H4a2.0021,2.0021,0,0,1-2-2V20a2.0021,2.0021,0,0,1,2-2H28a2.0021,2.0021,0,0,1,2,2v6A2.0021,2.0021,0,0,1,28,28ZM4,20v6H28V20Z" transform="translate(0 0)"/> <rect x="2" y="12" width="28" height="2"/> </svg>