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/magnify.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>watson-health--magnify</title><path class="cls-1" d="M12,21H4V4H22v8h2V4a2,2,0,0,0-2-2H4A2,2,0,0,0,2,4V21a2,2,0,0,0,2,2h8Z"/><path class="cls-1" d="M30,28.58l-3.11-3.11a6,6,0,1,0-1.42,1.42L28.58,30ZM22,26a4,4,0,1,1,4-4A4,4,0,0,1,22,26Z"/></svg>