fix(infra): remove docker-compose.hybrid.yml (network_mode host + default credentials)

SEC-04: File used network_mode: host on all services and had default
Grafana password 'admin'. Removed entirely; if needed in the future,
recreate without host networking.

docker-compose.hybrid.yml

@@ -1,91 +0,0 @@
-version: '3.8'
-
-services:
-  postgres:
-    image: postgres:15-alpine
-    container_name: veza-postgres-prod
-    environment:
-      POSTGRES_DB: ${POSTGRES_DB}
-      POSTGRES_USER: ${POSTGRES_USER}
-      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
-      POSTGRES_INITDB_ARGS: "-E UTF8 --locale=C"
-    volumes:
-      - postgres_data:/var/lib/postgresql/data
-      - ./scripts/database/backup:/backup:ro
-    network_mode: host
-    healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER}"]
-      interval: 10s
-      timeout: 5s
-      retries: 5
-      start_period: 30s
-    restart: unless-stopped
-    logging:
-      driver: "json-file"
-      options:
-        max-size: "10m"
-        max-file: "3"
-
-  redis:
-    image: redis:7-alpine
-    container_name: veza-redis-prod
-    command: >
-      redis-server
-      --requirepass ${REDIS_PASSWORD}
-      --appendonly yes
-      --appendfsync everysec
-      --maxmemory 256mb
-      --maxmemory-policy allkeys-lru
-    volumes:
-      - redis_data:/data
-    network_mode: host
-    healthcheck:
-      test: ["CMD", "redis-cli", "-a", "${REDIS_PASSWORD}", "ping"]
-      interval: 10s
-      timeout: 5s
-      retries: 5
-      start_period: 30s
-    restart: unless-stopped
-    logging:
-      driver: "json-file"
-      options:
-        max-size: "10m"
-        max-file: "3"
-
-  prometheus:
-    image: prom/prometheus:latest
-    container_name: veza-prometheus
-    volumes:
-      - ./config/prometheus.yml:/etc/prometheus/prometheus.yml
-      - prometheus_data:/prometheus
-    command:
-      - '--config.file=/etc/prometheus/prometheus.yml'
-      - '--storage.tsdb.path=/prometheus'
-      - '--web.console.libraries=/usr/share/prometheus/console_libraries'
-      - '--web.console.templates=/usr/share/prometheus/consoles'
-    network_mode: host
-    restart: unless-stopped
-
-  grafana:
-    image: grafana/grafana:latest
-    container_name: veza-grafana
-    volumes:
-      - grafana_data:/var/lib/grafana
-      - ./config/grafana:/etc/grafana/provisioning
-    environment:
-      - GF_SECURITY_ADMIN_PASSWORD=${GRAFANA_ADMIN_PASSWORD:-admin}
-      - GF_USERS_ALLOW_SIGN_UP=false
-    network_mode: host
-    depends_on:
-      - prometheus
-    restart: unless-stopped
-
-volumes:
-  postgres_data:
-    driver: local
-  redis_data:
-    driver: local
-  prometheus_data:
-    driver: local
-  grafana_data:
-    driver: local