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

@@ -0,0 +1,50 @@
+services:
+  gitea:
+    image: {{ gitea_image }}
+    container_name: gitea
+    restart: unless-stopped
+    environment:
+      USER_UID: "1000"
+      USER_GID: "1000"
+      GITEA__database__DB_TYPE: postgres
+      GITEA__database__HOST: gitea-db:5432
+      GITEA__database__NAME: gitea
+      GITEA__database__USER: gitea
+      GITEA__database__PASSWD: {{ gitea_db_password }}
+      GITEA__server__DOMAIN: {{ gitea_host }}
+      GITEA__server__SSH_DOMAIN: {{ gitea_host }}
+      GITEA__server__SSH_PORT: {{ gitea_ssh_port }}
+      GITEA__server__ROOT_URL: "https://{{ gitea_host }}/"
+    volumes:
+      - {{ gitea_data_dir }}:/data
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro
+    ports:
+      - "{{ gitea_ssh_port }}:22"
+    depends_on:
+      - gitea-db
+    labels:
+      traefik.enable: "true"
+      traefik.http.routers.gitea.rule: "Host(`{{ gitea_host }}`)"
+      traefik.http.routers.gitea.entrypoints: websecure
+      traefik.http.routers.gitea.tls.certresolver: cloudflare
+      traefik.http.services.gitea.loadbalancer.server.port: "3000"
+    networks:
+      - {{ docker_network_name }}
+
+  gitea-db:
+    image: {{ gitea_db_image }}
+    container_name: gitea-db
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER: gitea
+      POSTGRES_PASSWORD: {{ gitea_db_password }}
+      POSTGRES_DB: gitea
+    volumes:
+      - {{ gitea_data_dir }}/db:/var/lib/postgresql/data
+    networks:
+      - {{ docker_network_name }}
+
+networks:
+  {{ docker_network_name }}:
+    external: true