v1.1.0

What's New

• Agent summary sensor per server — state = running container count, with attributes: stacks (list), total_stacks, total_containers, running_containers
• Container sensor attributes — stack_name and agent_name now exposed, enabling simple Jinja2 filtering
• Consistent device naming — stack devices include agent name in multi-agent setups (e.g. agents (Voltorb))
• Stale entity cleanup — automatically removes orphaned entities (not just devices) on startup and data refresh