Xurgo Atlas v0.1.1

What's Changed

• Cleaned up the public README/package-page install guidance.
• Made the global CLI install the primary README path for the normal workflow.
• Documented project-local and npx usage as secondary options for pinned or no-install use.
• Fixed managed-document repair for docs.propose_document when a manifest entry exists but the managed file is missing.
• Clarified Atlas managed-docs governance expectations for agents and project documentation.