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/AI.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <polygon class="cls-2" points="17 11 20 11 20 21 17 21 17 23 25 23 25 21 22 21 22 11 25 11 25 9 17 9 17 11"/> <path class="cls-2" d="m13,9h-4c-1.103,0-2,.897-2,2v12h2v-5h4v5h2v-12c0-1.103-.897-2-2-2Zm-4,7v-5h4v5h-4Z"/> </svg>