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/3D-curve-manual.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>watson-health--3D-curve--manual</title><path d="M15,21a3,3,0,0,1-3,3h-.1a5,5,0,1,0,0,2H12a5,5,0,0,0,5-5ZM7,28a3,3,0,1,1,3-3A3,3,0,0,1,7,28Z"/><rect x="15" y="13" width="2" height="6"/><path d="M25,2a5,5,0,0,0-4.9,4H20a5,5,0,0,0-5,5h2a3,3,0,0,1,3-3h.1A5,5,0,1,0,25,2Zm0,8a3,3,0,1,1,3-3A3,3,0,0,1,25,10Z"/></svg>