Correct the end-state: uptime-kuma redeployed healthy, notifications restored;
vaultwarden serves (127.0.0.1 /alive 200) but reads docker-unhealthy due to a
localhost->IPv6 healthcheck probe quirk (reproduced on fresh redeploy);
bookstack unhealthy at app level (HTTP 500, pre-existing). Recommend catalog
healthchecks use 127.0.0.1 not localhost. Neither is a P1-P3 defect.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PSK5g6qYLknKj8u3QAFEr6
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