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/JSON-reference.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <polygon points="4 20 4 22 8.586 22 2 28.586 3.414 30 10 23.414 10 28 12 28 12 20 4 20"/> <polygon points="29 12 27 6 25 6 25 16 27 16 27 10 29 16 31 16 31 6 29 6 29 12"/> <path d="M21.3335,6h-2.667A1.6683,1.6683,0,0,0,17,7.6665v6.667A1.6684,1.6684,0,0,0,18.6665,16h2.667A1.6683,1.6683,0,0,0,23,14.3335V7.6665A1.6683,1.6683,0,0,0,21.3335,6ZM21,14H19V8h2Z"/> <path d="M9,7.6665V10a2.002,2.002,0,0,0,2,2h2v2H9v2h4.3335A1.6683,1.6683,0,0,0,15,14.3335V12a2.002,2.002,0,0,0-2-2H11V8h4V6H10.6665A1.6683,1.6683,0,0,0,9,7.6665Z"/> <path d="M5,14H3V12H1v2.3335A1.6684,1.6684,0,0,0,2.6665,16h2.667A1.6683,1.6683,0,0,0,7,14.3335V6H5Z"/> </svg>