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/anchor.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <rect class="cls-2" x="2.2574" y="25.5001" width="6.4854" height="1.9999" transform="translate(-17.1274 11.6508) rotate(-45)"/> <rect class="cls-2" x="9.2574" y="18.5001" width="6.4854" height="1.9999" transform="translate(-10.1274 14.5503) rotate(-45)"/> <rect class="cls-2" x="16.2574" y="11.5001" width="6.4854" height="1.9999" transform="translate(-3.1274 17.4498) rotate(-45)"/> <rect class="cls-2" x="23.2574" y="4.5001" width="6.4854" height="1.9999" transform="translate(3.8726 20.3493) rotate(-45)"/> </svg>