- COPY build/libs/*.jar instead of hardcoded discord-bot-1.0.0.jar (breaks on version bump)
- lavalink: add /v4/info healthcheck; bot waits for service_healthy before start;
lavalink now depends on spotify-tokener
- lavalink host port bound to 127.0.0.1 (bot talks over docker network; no internet exposure)
- .dockerignore: exclude .github + lavalink/ from build context