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/sailboat-coastal.svg

@@ -0,0 +1 @@
+<svg id="Layer_1" data-name="Layer 1" width="32" height="32" viewBox="0 0 32 32"> <path d="M24.7808,26,25.97,21.2422A1,1,0,0,0,25,20H20V17h5a1,1,0,0,0,.9082-1.4189l-6-13a1.0006,1.0006,0,0,0-1.7021-.19L8.2075,15.3906A1,1,0,0,0,9,17h9v3H7a1,1,0,0,0-.97,1.2422L7.2192,26H2v2H30V26ZM20,7.5527,23.437,15H20ZM11.0308,15,18,5.94V15ZM22.7192,26H9.2808l-1-4H23.7192Z" transform="translate(0 0)"/> </svg>