Apply the commaai/openpilot -> sunnypilot master sync while preserving c3xl-dev customizations: bundled CD210 startup, model mirror fallback, pyserial launch fix, hidden UI controls, vendored tinygrad, and local vehicle changes. Keep the four modeld_v2 warp pkls; skip the 740MB chestnut big-model artifact.
date: 2026-08-15T14:20:10 master commit: d48cfa730bf21593b684efeaf3fd8940695e1dea