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/chart-planning-waterfall.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path class="cls-2" d="m29,8c0-.5522-.4478-1-1-1h-4c-.5522,0-1,.4478-1,1v7h-2V3c0-.5522-.4478-1-1-1h-4c-.5522,0-1,.4478-1,1v12h-2V5c0-.5522-.4478-1-1-1h-4c-.5522,0-1,.4478-1,1v10H3v12c0,.5522.4478,1,1,1h4c.5522,0,1-.4478,1-1v-10h2v5c0,.5522.4478,1,1,1h4c.5522,0,1-.4478,1-1v-5h2v12c0,.5522.4478,1,1,1h4c.5522,0,1-.4478,1-1v-12h4v-9ZM7,26h-2v-9h2v9Zm8-5h-2v-4h2v4Zm2-6V4h2v11h-2Zm10,0h-2v-6h2v6Z"/> </svg>