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/text-annotation-toggle.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>text-annotation-toggle</title><path d="M29.537,13.76,26.24,10.463a1.5862,1.5862,0,0,0-2.24,0L10,24.4674V30h5.5326L29.537,16a1.5862,1.5862,0,0,0,0-2.24ZM14.7042,28H12V25.2958l9.4409-9.4409,2.7042,2.7042ZM25.5591,17.145,22.855,14.4409l2.2672-2.2672,2.7042,2.7042Z"/><polygon points="11 17 13 17 13 10 16 10 16 8 8 8 8 10 11 10 11 17"/><path d="M8,20H4V4H20V8h2V4a2,2,0,0,0-2-2H4A2,2,0,0,0,2,4V20a2,2,0,0,0,2,2H8Z"/></svg>