Fixes lyrics never loading. A macOS permission check never returned against recent Spotify builds, so Cantio's playback poll stalled on its very first run and the app sat on "Spotify not running" forever. Permission is now read from the playback query itself, with a timeout so a stuck Spotify can't freeze the poll again.
Adds a Permissions section in Settings showing the live Spotify access state, and a prompt when access has been denied. Both offer Reconnect, which clears Cantio's Automation decision so macOS asks again — a denial is otherwise permanent, with no way to re-add the app in System Settings.