Release v2.11.6

• Add optional age-verified YouTube cookie-file support for age-restricted playback.
• Fall back once to a closely matched audio-focused upload when a music video is age-restricted.
• Prevent unavailable YouTube tracks and rejected automatic queue advances from restarting Muse.
• Install current yt-dlp JavaScript challenge support and use the bundled Node.js runtime.
• Fix provider routing and autocomplete allocation, playlist limits and pagination, and YouTube chapter parsing.
• Fix queue command boundaries, queue insertion, and concurrent Player playback and voice-recovery transitions.
• Correct SponsorBlock trimming and restore pre-duck volume after overlapping speakers finish.
• Make cache writes safe under concurrent downloads, reconcile every indexed row, and reject negative cache limits.
• Reject blank required credentials and honor explicit SQLite database paths during legacy migrations.
• Add a Node.js behavior suite for commands, providers, queueing, playback, and caching.