Free Scout Score badges: shields.io for GitHub investing taste.

Two endpoints — /api/badge/scout/{user}/svg and /api/badge/momentum/{org}/{repo}/svg — render shields.io-style SVG badges from the same Scout Score and commit-velocity primitives that already power /receipts and /predict. Each render goes through GitHub's camo CDN as one impression for our domain. Each click lands on a branded GDF page. Builder UI at /badge-builder.