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/dicom-6000.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>watson-health--dicom--6000</title><path d="M13,11H7a3,3,0,0,0-3,3v2H6V14a1,1,0,0,1,1-1h6a1,1,0,0,1,1,1v2h2V14A3,3,0,0,0,13,11Z"/><path d="M10,10A4,4,0,1,0,6,6,4,4,0,0,0,10,10Zm0-6A2,2,0,1,1,8,6,2,2,0,0,1,10,4Z"/><rect x="20" y="4" width="10" height="2"/><rect x="20" y="8" width="10" height="2"/><rect x="20" y="12" width="6" height="2"/><path d="M5,30H3a2,2,0,0,1-2-2V22a2,2,0,0,1,2-2H6v2H3v2H5a2,2,0,0,1,2,2v2A2,2,0,0,1,5,30ZM3,26v2H5V26Z"/><path d="M13,30H11a2,2,0,0,1-2-2V22a2,2,0,0,1,2-2h2a2,2,0,0,1,2,2v6A2,2,0,0,1,13,30Zm-2-8v6h2V22Z"/><path d="M21,30H19a2,2,0,0,1-2-2V22a2,2,0,0,1,2-2h2a2,2,0,0,1,2,2v6A2,2,0,0,1,21,30Zm-2-8v6h2V22Z"/><path d="M29,30H27a2,2,0,0,1-2-2V22a2,2,0,0,1,2-2h2a2,2,0,0,1,2,2v6A2,2,0,0,1,29,30Zm-2-8v6h2V22Z"/></svg>