v8.9.0-dev.5

• Merge pull request #1717 from mardausdennis/feat/collapsible-proxy-status-widget
• Merge pull request #1718 from sgaluza/fix/adopt-settings-publish-by-replacement
• docs(shared-manager): note why the CAS mismatch raises EEXIST
• refactor(shared-manager): extract the durable temp write
• refactor(shared-manager): tighten canonical identity capture
• fix(shared-manager): publish adopted settings by replacement
• feat(dashboard): collapse the CLIProxy status widget