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/rule-test.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M23,30a7,7,0,1,1,7-7A7.0078,7.0078,0,0,1,23,30Zm0-12a5,5,0,1,0,5,5A5.0055,5.0055,0,0,0,23,18Z" transform="translate(0 0)"/> <polygon points="26 24.586 24 22.586 24 20 22 20 22 23.414 24.586 26 26 24.586"/> <rect x="8" y="16" width="6" height="2"/> <rect x="8" y="10" width="12" height="2"/> <path d="M26,4a2.0023,2.0023,0,0,0-2-2H4A2.0023,2.0023,0,0,0,2,4V17a10.9814,10.9814,0,0,0,5.8242,9.707L13,29.4668V27.2L8.7656,24.9424A8.9858,8.9858,0,0,1,4,17V4H24v9h2Z" transform="translate(0 0)"/> </svg>