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/chart-candlestick.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <title>chart--candlestick</title> <path d="M26,10H24V6H22v4H20V22h2v4h2V22h2ZM24,20H22V12h2Z"/> <path d="M14,8H12V4H10V8H8V18h2v4h2V18h2Zm-2,8H10V10h2Z"/> <path d="M30,30H4a2,2,0,0,1-2-2V2H4V28H30Z"/> </svg>