Tusk v0.1.7

Fixes the setup screen not disappearing after install.

If a post-install step (auto-start / .test DNS) hit a snag, the whole setup errored and left you stuck on the Welcome screen. Now those steps are best-effort: once the stack is installed, setup is marked complete and the app opens to the dashboard. If services didn't auto-start, just press Start all.

Apple Silicon build. Requires Homebrew. If macOS says 'damaged': xattr -cr /Applications/Tusk.app.