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-cx.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <circle cx="9" cy="27" r="1"/> <polygon points="22 5 20 5 18 8.897 16 5 14 5 16.905 10 14 15 16 15 18 11.201 20 15 22 15 19.098 10 22 5"/> <path d="M12,15H6a2.0023,2.0023,0,0,1-2-2V4A2.002,2.002,0,0,1,6,2h6V4H6v9h6Z" transform="translate(0 0)"/> <rect x="2" y="18" width="4" height="2"/> <rect x="8" y="18" width="4" height="2"/> <rect x="14" y="18" width="4" height="2"/> <rect x="20" y="18" width="4" height="2"/> <rect x="26" y="18" width="4" height="2"/> <path d="M26,31H6a2.0021,2.0021,0,0,1-2-2V25a2.0021,2.0021,0,0,1,2-2H26a2.0021,2.0021,0,0,1,2,2v4A2.0021,2.0021,0,0,1,26,31ZM6,25v4H26V25Z" transform="translate(0 0)"/> </svg>