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backstage release v0.138.0

Developer Portal backstage v0.138.0

Changed

  • AI chat: optimize the muster system prompt. systemPromptMuster.md now front-loads the muster Kubernetes tool contract (management_cluster: <mc>-mcp-kubernetes, podName, resourceType, tailLines), steers workflow discovery to a ranked filter_tools(query="<topic>") for the muster 0.9.0+ discovery tier, and prefers a matching workflow_* over raw x_kubernetes_* tools. Cuts tool-call trial-and-error and tokens on common Kubernetes questions (#1776, #1784). See ./docs/releases/v0.138.0-changelog.md for more information.