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/data-structured.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>data-structured</title><circle cx="9" cy="7" r="1"/><path d="M27,22.14V18a2,2,0,0,0-2-2H17V12h9a2,2,0,0,0,2-2V4a2,2,0,0,0-2-2H6A2,2,0,0,0,4,4v6a2,2,0,0,0,2,2h9v4H7a2,2,0,0,0-2,2v4.14a4,4,0,1,0,2,0V18h8v4H12v8h8V22H17V18h8v4.14a4,4,0,1,0,2,0ZM8,26a2,2,0,1,1-2-2A2,2,0,0,1,8,26Zm10-2v4H14V24ZM6,10V4H26v6ZM26,28a2,2,0,1,1,2-2A2,2,0,0,1,26,28Z" transform="translate(0)"/></svg>