revert: restore original yt-dlp search — remove broken ytmsearch/ytsearch5 changes

Reverts cc7fc80, 59562fe, 595fb2b, 626a755.
The new search logic caused wrong songs, [Unknown Album] folders and duplicate downloads.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -30,8 +30,7 @@ services:
       - MAX_PARALLEL=${MAX_PARALLEL:-2}
     command: >
       sh -c "
-        apk add --no-cache ffmpeg python3 py3-pip &&
-        pip3 install -U yt-dlp --break-system-packages &&
+        apk add --no-cache yt-dlp ffmpeg python3 &&
         npm install express cors &&
         node novasonic-server.js
       "