refactor: split music streaming into Hope Music

Move the media server, downloader, library volume, and browser player to the
standalone hope-media-music product. Keep Hope's music tools as a thin HTTP
client of the LAN service on port 8094.

Use a stable voice-room player scope instead of ephemeral LiveKit room names.
The agent now owns the conversation handshake: fresh reported playback mutes
its input, joining pauses music, and the last participant leaving resumes only
music it paused. Peer failures remain non-fatal.

Also move the voice deploy workflow onto the active Unraid Gitea runner and
remove yt-dlp/ffmpeg/media health and volume dependencies from the image.

.env.example

@@ -29,18 +29,16 @@ FIRECRAWL_BASE=http://192.168.86.2:3002
 # Per-user memory profiles and Bearer tokens live in config/users.json.
 VOICE_DEFAULT_USER=shane
 
-# ── Media player (music library + YouTube Music downloads) ─────────────────
-# The permanent library lives in ./media (bind-mounted to /data/media):
-#   media/files/  transcoded mp3 tracks
-#   media/thumbs/ cover art
-#   media/jobs/   download job status
-# MEDIA_SERVER_PORT=8093 (8092 is taken by YOURLS/Apache on xNAS)
-#
-# Optional: export cookies.txt from a browser logged into YouTube and drop it
-# in ./media/cookies.txt to avoid "confirm you're not a bot" download blocks.
-# Anonymous access works from most residential IPs; cookies are the reliable
-# path.
-# YTDLP_COOKIES=/data/media/cookies.txt
+# ── Hope Music (separate LAN service) ───────────────────────────────────────
+# The voice agent keeps the music MCP tools, but the library, downloads,
+# streaming, and browser player live in the hope-media-music product.
+MUSIC_BASE_URL=http://192.168.86.2:8094
+# Stable player scope shared with the standalone Hope Music page. Do not use
+# the ephemeral LiveKit room name minted for each conversation.
+MUSIC_ROOM=voice-room
+# Player reports are refreshed every few seconds. Older "playing" reports are
+# treated as stale so a closed player cannot leave Hope's mic disabled.
+MUSIC_REPORT_TTL=30
 
 # Extra MCP servers (optional). JSON list of {url, transport} objects.
 # transport: "sse" | "streamable_http" | omit for auto-detect