Cantio 1.0.0

First-run onboarding assistant: full-screen welcome (logo reveal, rising chime, drifting translucent backdrop) into a quick setup — accent, lines visible, font size, launch at login — with a live glass lyric-pill preview. Honors Reduce Motion / Reduce Transparency, keyboard- and VoiceOver-navigable.

Upgrade: brew upgrade --cask cantio. Universal (arm64 + x86_64), macOS 14+, unsigned (--no-quarantine).