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The Nextcloud health check expected HTTP 401 from serverinfo, but NC 32 returns 200 — causing 5-minute timeouts. Switch to /status.php with "installed":true check (matches Docker healthcheck). Also route the correct MCP_SERVER_URL per CI matrix profile into the app container so Astrolabe connects to the right service, and make the init script gracefully skip when the var is unset. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>