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/financial-assets.svg

@@ -0,0 +1 @@
+<svg id="Icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M27,16h-2v2h-1c-1.1,0-2,.9-2,2v2c0,1.1.9,2,2,2h4v2h-6v2h3v2h2v-2h1c1.1,0,2-.9,2-2v-2c0-1.1-.9-2-2-2h-4v-2h6v-2h-3v-2ZM28,8h-6v-4c0-1.1-.9-2-2-2h-8c-1.1,0-2,.9-2,2v4h-6c-1.1,0-2,.9-2,2v14c0,1.1.9,2,2,2h15v-2H4v-14h24v4h2v-4c0-1.1-.9-2-2-2ZM20,8h-8v-4h8v4Z"/> </svg>