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/trigger.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M2,19l1.4,1.4,5.6-5.6,5.6,5.6,1.4-1.4-7-7-7,7ZM28.6,11.6l-5.6,5.6-5.6-5.6-1.4,1.4,7,7,7-7-1.4-1.4ZM9,22c-1.1046,0-2,.8954-2,2s.8954,2,2,2,2-.8954,2-2-.8954-2-2-2ZM23,10c1.1046,0,2-.8954,2-2s-.8954-2-2-2-2,.8954-2,2,.8954,2,2,2Z"/> </svg>