Initial commit — DRB server stack

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

.gitignore

@@ -0,0 +1,31 @@
+# Environment / secrets
+.env
+drb-c2-core/.env
+drb-server-discord-bot/.env
+drb-frontend/.env
+drb-c2-core/gcp-key.json
+
+# Python
+__pycache__/
+*.py[cod]
+*.pyo
+.venv/
+venv/
+
+# Node / Next.js
+node_modules/
+.next/
+*.tsbuildinfo
+
+# Logs and debug captures
+*.log
+logs/
+*.har
+
+# Docker volumes / runtime data
+mosquitto/data/
+recordings/
+
+# OS
+.DS_Store
+Thumbs.db