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/pcn-military.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <polygon points="16 16 14.407 19 11 19.414 13.5 21.667 13 25 16 23.125 19 25 18.5 21.667 21 19.414 17.5 19 16 16"/> <polygon points="12.414 17.414 16 13.834 16 13.834 19.588 17.416 21 16 16 11 11 16 12.414 17.414"/> <polygon points="12.414 12.414 16 8.834 16 8.834 19.588 12.416 21 11 16 6 11 11 12.414 12.414"/> <path d="M30.4141,17.4141a1.9995,1.9995,0,0,0,0-2.8282L24.6272,8.7993l2.9006-2.8628a2.0018,2.0018,0,1,0-1.4416-1.3872L23.2129,7.3848,17.4141,1.5859a1.9995,1.9995,0,0,0-2.8282,0L8.7993,7.3726,5.9368,4.4717A2.002,2.002,0,1,0,4.55,5.9136l2.835,2.8735L1.5859,14.5859a1.9995,1.9995,0,0,0,0,2.8282l5.7989,5.7988L4.55,26.0864a1.9977,1.9977,0,1,0,1.387,1.4419l2.8625-2.9009,5.7866,5.7867a1.9995,1.9995,0,0,0,2.8282,0l5.7988-5.7989,2.8733,2.8355a1.998,1.998,0,1,0,1.4416-1.3872l-2.9006-2.8628ZM16,29,3,16,16,3,29,16Z"/> </svg>