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/text-align-mixed.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M14,4H9V6h5V8H10a2,2,0,0,0-2,2v2a2,2,0,0,0,2,2h6V6A2.0023,2.0023,0,0,0,14,4Zm0,8H10V10h4Z"/> <polygon points="22 26 22 18 20 18 20 19 18 19 18 21 20 21 20 26 18 26 18 28 24 28 24 26 22 26"/> <rect x="2" y="2" width="2" height="14"/> <rect x="28" y="16" width="2" height="14"/> </svg>