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/ibm-global-storage-architecture.svg

@@ -0,0 +1,2 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M16,26c1.1,0,2,.9,2,2s-.9,2-2,2-2-.9-2-2,.9-2,2-2ZM5,26c1.1,0,2,.9,2,2s-.9,2-2,2-2-.9-2-2,.9-2,2-2ZM27,26c1.1,0,2,.9,2,2s-.9,2-2,2-2-.9-2-2,.9-2,2-2ZM6,24v-3h9v3h2v-3h9v3h2v-3c0-1.1-.9-2-2-2h-9v-3h-2v3H6c-1.1,0-2,.9-2,2v3h2ZM21.7,6.1c-.8-2.4-3.1-4.1-5.7-4.1s-4.9,1.7-5.7,4.1c-1.9.3-3.3,1.9-3.3,3.9s1.8,4,4,4h10c2.2,0,4-1.8,4-4s-1.4-3.6-3.3-3.9ZM21,12h-10c-1.1,0-2-.9-2-2s.9-2,2-2h1c0-2.2,1.8-4,4-4s4,1.8,4,4h1c1.1,0,2,.9,2,2s-.9,2-2,2Z"/> <rect id="_x3C_Transparent_Rectangle_x3E_" class="cls-1" width="32" height="32"/>
+</svg>