Organize documentation by moving requirements (HighLevelReqs, Component-*,
lmxproxy_protocol) to docs/requirements/ and test infrastructure docs to
docs/test_infra/. Updates all cross-references in README, CLAUDE.md,
infra/README, component docs, and 23 plan files.
Add keep-oldest split-brain resolver with 15s stable-after duration. Configure both
nodes as seed nodes for symmetric startup. Set moderate failure detection defaults
(2s heartbeat, 10s threshold, ~25s total failover). Document automatic dual-node
recovery from persistent storage with no manual intervention.
