Prometheus Metrics for Pods & PVCs

This release brings live Prometheus-backed metrics into the app, alongside a Karpenter integration for autoscaled clusters.

📈 Prometheus Metrics

• A new Metrics tab on Pods charts CPU, memory, network, and filesystem usage per container, sourced directly from Prometheus.
• PersistentVolumeClaims get a Metrics tab too, with kubelet volume stats (capacity, usage, inodes) and, for Carina volumes, custom Volume I/O metrics.
• Auto-discovery finds Prometheus in your cluster, or you can configure it manually from Settings → Monitoring, with per-context layering and a connection test.
• An option to hide unavailable metrics keeps the tab focused on panels that actually have data.

🚀 Karpenter

• NodePool, NodeClaim, and NodeClass list and overview pages, with capacity, disruption, and requirement details.
• Block/Allow Disruption toggle on NodeClaims, and relations linking NodePools, NodeClaims, Nodes, and NodeClasses.
• Pods, CPU, and Memory Allocation columns added to Nodes and NodeClaims.

✨ Other Improvements

• The Restarts column now folds in the last restart's exit code, colour-matched between the badge and the reason, with screen-reader support.

🐛 Fixes

• List copy actions now route through the Wails clipboard instead of the browser one.

🧹 Misc / Chore

• Bumped frontend and Go dependencies, and pinned kube-openapi to the version Kubernetes 0.37.1 expects.