docs/logging-contract.md defines the canonical LogEntry shape, the 8
lifecycle stages, requestId propagation rules, redaction policy, and the
backend ordering guarantee (per-requestId monotonic ts at emit time) that
the dashboard logs UI consumes.
CLAUDE.md updated: Node.js 14+ -> 18+ (AsyncLocalStorage is more stable on
18+ across timer / microtask / dynamic-import boundaries).
Refs #1141, #1138