Trace the flat-color logo to source/logo.svg (palette-locked to the canonical
brand colors via tools/trace_logo.py), and render every avatar/favicon/logo
master from the SVG at its exact size (tools/build_assets.py via resvg). Logo
assets are now crisp at any resolution — removes the 640px upscale ceiling.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
