MCP Discover metrics & Kubernetes state pop-over

Added

• Add ability for Ai Agents to discover our metrics on our MCP server. Before this discover_metrics endpoint, we had our get_metric_names endpoint, but it was difficult for agents to determine what metric should be used when.

  With this new discover_metrics endpoint, we provide the Agent with a global overview of metric categories, and when they request more information about a category, we describe the metric names/tags/fields, and when to use them.

  We also take custom metrics and dashboards into account. Providing descriptive names for dashboards/description and charts on your dashboards helps the agent use those metrics.

Changed

• Improve cluster state pop-over. Show state of containers, if there are any.