Revert "update test"

This reverts commit afefb65bf2.

Dropping env_file from the bot service left it with only LAVALINK_URI, so
BOT_TOKEN and LAVALINK_PASSWORD never reached the container and Main exited 1
on startup, crash-looping under restart: unless-stopped. Compose's automatic
.env loading only interpolates ${VAR} within the compose file; it does not
inject variables into containers.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014hv8niNYWL3CXvFw8KVVTT

docker-compose.yaml

@@ -9,6 +9,9 @@ services:
     restart: unless-stopped
     depends_on:
       - lavalink
+    # BOT_TOKEN, GUILD_ID, LAVALINK_PASSWORD, ... come from .env.
+    env_file:
+      - .env
     environment:
       - LAVALINK_URI=ws://lavalink:2333
     # Catchphrases and the AR-meter user lists are supplied at deploy time,