Ethereal BLSPOTIFY por nhatnamjades

Ethereal BLSPOTIFY blocks ads in Spotify Web Player (open.spotify.com) and embedded players.

How it works:
- Detects audio ads via page title (Advertisement), short track duration (<35s progress slider), and dealer WebSocket AD metadata
- Silences audio instantly (element volume + tab mute) and unmutes when music resumes
- Hides banner/sponsored slots via CSS + JS and shows a small "AD BLOCKED" badge
- Redirects known ad media domains (doubleclick, 2mdn, amillionads, googlesyndication) to a local 1s silent video via declarativeNetRequest
- Handles open.spotify.com/embed frames separately (fetch/XHR state scan)

No tracking, no remote code, no account. Permissions used only for open.spotify.com: storage (counters), tabs (mute), declarativeNetRequest (media redirect)