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/flash-off-filled.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>flash--off--filled</title><path d="M30,28.59,3.41,2,2,3.41,8.4,9.82,7,15.77A1,1,0,0,0,8,17h4.83L11,28.85a1,1,0,0,0,.6,1.07A1.09,1.09,0,0,0,12,30a1,1,0,0,0,.79-.39l6.68-8.73L28.59,30Z"/><path d="M22.53,16.87l3.26-4.26a1,1,0,0,0,.11-1A1,1,0,0,0,25,11H20.25L22,3.22a1,1,0,0,0-.2-.85A1,1,0,0,0,21,2H11a1,1,0,0,0-1,.77l-.3,1.3Z"/></svg>