Superlevels Chrome Extension

This is a working Chrome extension that replaces a dozen tools with one local, zero-telemetry package. You get tab cleanup based on inactivity, cookie editing, dark mode via CSS inversion, JavaScript toggling, GDPR dismissal, live CSS injection, and music recognition through ACRCloud. It's pure JavaScript with no build step, loads in developer mode from GitHub, and stores everything in chrome.storage.local. The skill walks you through the manifest structure, storage patterns for per-domain settings, and implementations for each feature. If you're tired of managing extension bloat or want to fork something auditable, this covers the full stack from background workers to content script injection.