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-security-services.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M26,20a2.97,2.97,0,0,0-1.8551.6607L22,19.4224V17.8157a3,3,0,1,0-2,0v1.6067l-2.1449,1.2383A2.97,2.97,0,0,0,16,20a3.02,3.02,0,1,0,2.9254,2.3525L21,21.1548l2.0746,1.1977A2.9978,2.9978,0,1,0,26,20ZM16,24a1,1,0,1,1,1-1A1.0006,1.0006,0,0,1,16,24Zm5-10a1,1,0,1,1-1,1A1.0009,1.0009,0,0,1,21,14Zm5,10a1,1,0,1,1,1-1A1.0006,1.0006,0,0,1,26,24Z" transform="translate(0 0)"/> <path d="M16,31A11.0125,11.0125,0,0,1,5,20V6.3823L15.9873.8816,26.4478,6.1187l-.8956,1.7885L15.9873,3.1184,7,7.6177V20a9.0008,9.0008,0,0,0,14.3994,7.2012L22.6006,28.8A10.9077,10.9077,0,0,1,16,31Z" transform="translate(0 0)"/> </svg>