Initial commit — DRB server stack

Includes c2-core (FastAPI/MQTT/Firestore), discord-bot (slash commands),
frontend (Next.js admin UI), and mosquitto config.

drb-server-discord-bot/app/internal/logger.py

@@ -0,0 +1,10 @@
+import logging
+import sys
+
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
+    handlers=[logging.StreamHandler(sys.stdout)],
+)
+
+logger = logging.getLogger("drb-server-bot")