Newest-first devtools event log: relative timestamps (absolute on hover), namespace-colored type badges (vectordb/embedding/model/queue/pipeline/storage), serialized payloads, a case-insensitive substring type filter, a visible cap (default 100) with an overflow line, distinct no-events and no-match empty states, and an optional Clear affordance. Recommended data source: useDevToolsEvents from @localmode/devtools/react.