Initial Ansible automation for hobbs.farm infrastructure

Complete IaC covering:
- 14 roles: common, docker, traefik, vaultwarden, monitoring, media, matrix,
  home_assistant, frigate, adguard, gitea, semaphore, openclaw, security, backup
- Inventory for all hosts (Peggy, Bart, Yoda, NAS, Firewalla)
- Stack playbooks: core-infrastructure, monitoring, media, communication,
  automation, smarthome, security-hardening
- Maintenance playbooks: update-containers, backup, health-check
- Production Docker Compose templates with Traefik labels
- Security hardening (sysctl, auditd, UFW, fail2ban)
- Automated backups with retention policy

roles/frigate/templates/docker-compose.yml.j2

@@ -0,0 +1,30 @@
+services:
+  frigate:
+    image: {{ frigate_image }}
+    container_name: frigate
+    restart: unless-stopped
+    privileged: true
+    shm_size: "256mb"
+    ports:
+      - "5000:5000"
+      - "8554:8554"
+      - "8555:8555/tcp"
+      - "8555:8555/udp"
+    volumes:
+      - {{ frigate_config_dir }}:/config
+      - {{ frigate_media_dir }}:/media/frigate
+      - /etc/localtime:/etc/localtime:ro
+    environment:
+      FRIGATE_RTSP_PASSWORD: "{{ vault_frigate_rtsp_password | default('changeme') }}"
+    labels:
+      traefik.enable: "true"
+      traefik.http.routers.frigate.rule: "Host(`{{ frigate_host }}`)"
+      traefik.http.routers.frigate.entrypoints: websecure
+      traefik.http.routers.frigate.tls.certresolver: cloudflare
+      traefik.http.services.frigate.loadbalancer.server.port: "5000"
+    networks:
+      - {{ docker_network_name }}
+
+networks:
+  {{ docker_network_name }}:
+    external: true