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/connection-receive.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <rect x="8" y="8" width="2" height="4"/> <rect x="8" y="14" width="2" height="4"/> <rect x="14" y="8" width="2" height="4"/> <rect x="14" y="14" width="2" height="4"/> <rect x="8" y="20" width="2" height="4"/> <rect x="14" y="20" width="2" height="4"/> <polygon points="30 14 21.83 14 24.41 16.59 23 18 18 13 23 8 24.41 9.41 21.83 12 30 12 30 14"/> <path d="M28,20v8H22V20H20v8H4V4H20V6h2V4a2,2,0,0,0-2-2H4A2,2,0,0,0,2,4V30H30V20Z"/> </svg>