Reach parity between flash-mac.sh and the Linux ac-os flash path so a mac-flashed device gets the same on-device dev environment: flash-mac.sh now bakes (when present locally): - /tangled-key + /tangled-known-hosts + /tangled-ssh-config — init copies them into /tmp/.ssh so pty.c's GIT_SSH_COMMAND resolves knot pushes, and ac-native's /mnt/ac-repo clone gets origin pushurls for both knot.aesthetic.computer and the GitHub mirror. - /device-claude.md — on-device CLAUDE.md context - /device-score.md — on-device SCORE.md context TANGLED_KEY is resolved the same way ac-os does it: `ssh -G knot...` first, then ~/.ssh/tangled fallback. known_hosts comes from ~/.ssh/known_hosts or ssh-keyscan. Boot animation gains a third auth badge alongside the crab (Claude) and octocat (GitHub): an 11x11 "(λ)" lambda-in-parens for Common Lisp/Tangled push access. Gated on /tangled-key existing so it represents real knot push capability rather than just the local /ac-swank service.