Add initial .env.sample and compose.yaml for Bambuddy service setup

komodo/automate/bambuddy/.env.sample

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+PG_USER=bambuddy
+PG_PASS=changeme
+DATA_PATH=/mnt/data

komodo/automate/bambuddy/compose.yaml

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+services:
+  bambuddy:
+    image: ghcr.io/maziggy/bambuddy:latest
+    build: .
+    # Usage:
+    #   docker compose up -d          → pulls pre-built image
+    #   docker compose up -d --build  → builds from source
+    container_name: bambuddy
+    network_mode: host  # Recommended for automatic printer discovery
+    volumes:
+      - bambuddy_data:/app/data
+      - bambuddy_logs:/app/logs
+      - ${DATA_PATH}/media/projects:/external/nas
+    environment:
+      - TZ=America/Toronto  # Your timezone
+      - DATABASE_URL=postgresql://${PG_USER:-bambuddy}:${PG_PASS:?database password required}@postgres:5432/bambuddy
+      - TRUSTED_FRAME_ORIGINS=http://homeassistant.local:8123
+      - BAMBUDDY_EXTERNAL_ROOTS=/external/nas
+    restart: unless-stopped
+    # Docker SIGKILLs after 10s by default. Bambuddy stops well inside that,
+    # but the headroom means a slow teardown (several virtual printers on a Pi)
+    # can still checkpoint the database instead of being killed mid-write.
+    stop_grace_period: 30s
+  postgres:
+   image: postgres:16-alpine
+   container_name: bambuddy-db
+   restart: unless-stopped
+   environment:
+     POSTGRES_USER: ${PG_USER:-bambuddy}
+     POSTGRES_PASSWORD: ${PG_PASS:?database password required}
+     POSTGRES_DB: bambuddy
+   volumes:
+     - bambuddy_pgdata:/var/lib/postgresql/data
+   ports:
+     - "5432:5432"
+volumes:
+  bambuddy_data:
+  bambuddy_logs: