Type 2: Perfect PWA Assets

Create a production-ready SVG favicon and PWA icon set optimized for modern browsers. Constraints: 1) MAXIMIZE VISIBILITY: Design must be edge-to-edge (no internal padding) to utilize full 100% viewport. 2) ADAPTIVE: Support Light/Dark mode via CSS media queries within SVG or separate files. 3) CLARITY: Use solid fills (not strokes) for legibility at 16x16px. 4) Deliverables: icon.svg (adaptive), icon-light.svg, icon-dark.svg, and a web app manifest snippet.