v1.7.0

Added

• list_routers tool — read-only enumeration of the routers configured in routers.yaml (id, host, port, TLS status, tags, ROS version, and which is the default), so MCP clients can discover valid routerId values and tags for targeting other tools (including bulk_execute) without opening the config file. Reflects local config only — no RouterOS API call and no credentials in the response; results are scoped to the caller's allowedRouters (#53)