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/home_assistant/templates/docker-compose.yml.j2

@@ -0,0 +1,52 @@
+services:
+  homeassistant:
+    image: {{ ha_image }}
+    container_name: homeassistant
+    restart: unless-stopped
+    privileged: true
+    environment:
+      TZ: {{ timezone }}
+    volumes:
+      - {{ ha_data_dir }}:/config
+    labels:
+      traefik.enable: "true"
+      traefik.http.routers.ha.rule: "Host(`{{ ha_host }}`)"
+      traefik.http.routers.ha.entrypoints: websecure
+      traefik.http.routers.ha.tls.certresolver: cloudflare
+      traefik.http.services.ha.loadbalancer.server.port: "8123"
+    networks:
+      - {{ docker_network_name }}
+
+  esphome:
+    image: {{ esphome_image }}
+    container_name: esphome
+    restart: unless-stopped
+    environment:
+      TZ: {{ timezone }}
+    volumes:
+      - {{ esphome_data_dir }}:/config
+    labels:
+      traefik.enable: "true"
+      traefik.http.routers.esphome.rule: "Host(`{{ esphome_host }}`)"
+      traefik.http.routers.esphome.entrypoints: websecure
+      traefik.http.routers.esphome.tls.certresolver: cloudflare
+      traefik.http.services.esphome.loadbalancer.server.port: "6052"
+    networks:
+      - {{ docker_network_name }}
+
+  mosquitto:
+    image: {{ mosquitto_image }}
+    container_name: mosquitto
+    restart: unless-stopped
+    ports:
+      - "1883:1883"
+    volumes:
+      - {{ mosquitto_data_dir }}/config:/mosquitto/config
+      - {{ mosquitto_data_dir }}/data:/mosquitto/data
+      - {{ mosquitto_data_dir }}/log:/mosquitto/log
+    networks:
+      - {{ docker_network_name }}
+
+networks:
+  {{ docker_network_name }}:
+    external: true