fix(music): add lavasrc-patcher sidecar for auto-applying runtime config

LavaSrc plugin config (preferPartnerApi, customTokenEndpoint, spDc)
doesn't bind from YAML in Lavalink 4. Added a one-shot sidecar container
that applies the config via PATCH endpoint after Lavalink becomes healthy.
Also cleaned up DEBUG logging.

docker-compose.yml

@@ -31,6 +31,16 @@ services:
       retries: 3
       start_period: 20s
 
+  lavasrc-patcher:
+    build:
+      context: ./lavalink
+      dockerfile: Dockerfile.config-patcher
+    container_name: lavasrc-patcher
+    depends_on:
+      lavalink:
+        condition: service_healthy
+    restart: "no"
+
   bot:
     build: .
     container_name: loki-bot

lavalink/Dockerfile.config-patcher

@@ -0,0 +1,5 @@
+FROM alpine:3.20
+RUN apk add --no-cache curl
+COPY apply-config.sh /apply-config.sh
+RUN chmod +x /apply-config.sh
+CMD ["/apply-config.sh"]

lavalink/apply-config.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+# Apply LavaSrc runtime config after Lavalink starts
+
+until curl -sf -H "Authorization: Hch4HiVCxkKs9JPiSnrt4Q" http://lavalink:2333/v4/info >/dev/null 2>&1; do
+  sleep 2
+done
+
+sleep 5
+
+curl -sf -X PATCH \
+  -H "Authorization: Hch4HiVCxkKs9JPiSnrt4Q" \
+  -H "Content-Type: application/json" \
+  -d '{"spotify":{"preferPartnerApi":true,"customTokenEndpoint":"http://spotify-tokener:8080/api/token","spDc":"AQDVrLVOyLLT3ZuiLoY32uH8HotvY_Lw67ay1lejf55S7O3f_O9IefxZ8XDf3pYklpwl5Klei2NeYUPRZ-cbkpQg5S3RyMjuiTmBxdAuMlugA61_wAy-bXD979aYDK44Bid6UKxLHjh0kFQZ_tX71DAUGezA2XjeLcRi_-TLcKHWKZVKPhGniUOZZEhg2Ij9t6valbqSbDOQ1t0dtQ"}}' \
+  http://lavalink:2333/v4/lavasrc/config
+
+echo "LavaSrc config applied"