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/firewall-classic.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path class="cls-1" d="M28,20V17a4,4,0,0,0-8,0v3a2.0023,2.0023,0,0,0-2,2v6a2.0023,2.0023,0,0,0,2,2h8a2.0023,2.0023,0,0,0,2-2V22A2.0023,2.0023,0,0,0,28,20Zm-6-3a2,2,0,0,1,4,0v3H22Zm6,11H20V22h8Z" transform="translate(0 0)"/> <path class="cls-1" d="M15,27H4a2,2,0,0,1-2-2V22a2,2,0,0,1,2-2H15v2H4v3H15Z" transform="translate(0 0)"/> <path class="cls-1" d="M17,18H8a2,2,0,0,1-2-2V13a2,2,0,0,1,2-2H19v2H8v3h9Z" transform="translate(0 0)"/> <path class="cls-1" d="M22,9H4A2,2,0,0,1,2,7V4A2,2,0,0,1,4,2H22a2,2,0,0,1,2,2V7A2,2,0,0,1,22,9ZM4,7H22V4H4Z" transform="translate(0 0)"/> </svg>