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/direction-curve.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <title>direction--curve</title> <path d="M17,4l-7,7,1.4141,1.4141L16,7.8281v6.7686a3.01,3.01,0,0,1-.6572,1.874l-2.2471,2.8086A5.0206,5.0206,0,0,0,12,22.4033V28h2V22.4033a3.01,3.01,0,0,1,.6572-1.874l2.2471-2.8086A5.0206,5.0206,0,0,0,18,14.5967V7.8281l4.5859,4.586L24,11Z"/> </svg>