Remove Lavaplayer and migrate to Lavalink

Replaced the bot's audio handling system by removing Lavaplayer dependencies and migrating to a Lavalink v4 node. Updated `MusicManager`, `TrackScheduler`, and related classes to utilize the `LavalinkClient`. Refactored playlist and track loading logic, task integrations, and event dispatch to integrate with the remote node. Deprecated the custom Udio source, preserving references for a future plugin port. Documented configuration and deployment details for the new audio architecture.

docker-compose.yml

@@ -23,14 +23,39 @@ services:
       - netneutrality
     depends_on:
       - netneutrality-db
+      - lavalink
     volumes:
       - ./logs:/app/logs
     environment:
-      MYSQL_HOST: netneutrality-db
-      MYSQL_PORT: 3306
-      MYSQL_USER: java
-      MYSQL_PASSWORD: password
-      MYSQL_DATABASE: netneutrality
+      - MYSQL_HOST=${MYSQL_HOST:-netneutrality-db}
+      - MYSQL_PORT=${MYSQL_PORT:-3306}
+      - MYSQL_USER=${MYSQL_USER:-java}
+      - MYSQL_PASSWORD=${MYSQL_PASSWORD:-password}
+      - MYSQL_DATABASE=${MYSQL_DATABASE:-netneutrality}
+      - API_PORT=${NETNEUTRALITY_API_PORT:-9000}
+
+  # Lavalink >= 4.2.0 is required: the node handles DAVE end-to-end encryption,
+  # so the bot no longer ships native encoders.
+  lavalink:
+    image: ghcr.io/lavalink-devs/lavalink:4.2
+    container_name: lavalink
+    restart: unless-stopped
+    networks:
+      - netneutrality
+    depends_on:
+      - ejs-api
+      - webpo
+    volumes:
+      - ./lavalink/application.yml:/opt/Lavalink/application.yml:ro
+    environment:
+      - SERVER_PASSWORD=${NETNEUTRALITY_LAVALINK_PASSWORD:-youshallnotpass}
+      - NETNEUTRALITY_CIPHER_URL=${NETNEUTRALITY_CIPHER_URL:-http://ejs-api:8001}
+      - NETNEUTRALITY_CIPHER_PASSWORD=${NETNEUTRALITY_CIPHER_PASSWORD:-}
+      - NETNEUTRALITY_OAUTH_TOKEN=${NETNEUTRALITY_OAUTH_TOKEN:-}
+      - NETNEUTRALITY_POT_URL=${NETNEUTRALITY_POT_URL:-http://webpo:8080}
+      - NETNEUTRALITY_PO_TOKEN=${NETNEUTRALITY_PO_TOKEN:-}
+      - NETNEUTRALITY_VISITOR_DATA=${NETNEUTRALITY_VISITOR_DATA:-}
+
   ejs-api:
     image: ghcr.io/kikkia/yt-cipher:master@sha256:4c5ec381ff57336cfc24822d2b526a5ad7cd0171f61065a1bbc87bb736842449
     container_name: ejs_signature_api
@@ -39,8 +64,25 @@ services:
       - netneutrality
     # environment: # UNCOMMENT THIS LINE AND API_TOKEN TO ADD A PASSWORD
     #   - API_TOKEN=test
+
+  webpo:
+    image: ghcr.io/ashton045/webpo-generator
+    container_name: webpo-generator
+    environment:
+      - HOST=${HOST:-::}
+      - PORT=${PORT:-8080}
+      - WORKERS=${WORKERS:-1}
+      - QUEUE_SIZE=${QUEUE_SIZE:-32}
+      - MAX_PENDING_REQUESTS=${MAX_PENDING_REQUESTS:-256}
+      - REQUEST_TIMEOUT=${REQUEST_TIMEOUT:-30000}
+      - CACHE_SIZE=${CACHE_SIZE:-100}
+      - CACHE_TTL=${CACHE_TTL:-300000}
+      - VISITOR_TTL=${VISITOR_TTL:-600000}
+      - API_TOKEN=
+    restart: unless-stopped
 volumes:
   netneutrality-db: null
+  netneutrality-lavalink-plugins: null
 
 networks:
   netneutrality: null