Initial commit: 23 docker stacks for GitOps deployment

Stacks included:
- Infrastructure: traefik, authentik, gitea, registry, watchtower, dockge
- Monitoring: smokeping, changedetection
- Apps: ghost, gollum, wallabag, radicale, invidious, xbackbone, filebrowser, syncthing, zerotier
- Custom: obsidian-tools, memento, perilous, ramz, bookclub, brain

🤖 Generated with Claude Code

stacks/brain/docker-compose.yml

@@ -0,0 +1,32 @@
+services:
+  web:
+    image: nginx:latest
+    container_name: brain
+    restart: unless-stopped
+    expose:
+      - 80
+    volumes:
+      - ./public:/usr/share/nginx/html
+      - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro
+    networks:
+      - web
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.brain.entrypoints=https"
+      - "traefik.http.routers.brain.rule=Host(`brain.${DOMAIN}`)"
+      - "traefik.http.routers.brain.tls.certresolver=http"
+      - "traefik.http.routers.brain.middlewares=auth@file"
+
+  sftp:
+    image: atmoz/sftp
+    container_name: brain-sftp
+    restart: unless-stopped
+    volumes:
+      - ./public:/home/commander/upload
+    ports:
+      - "2232:22"
+    command: ${BRAIN_SFTP_USER}:${BRAIN_SFTP_PASSWORD}:1001
+
+networks:
+  web:
+    external: true