Collects everything a Rails app knows about each request or job execution into one flat, high-cardinality event: route, user, build, query counts, cache hits, feature flags, phase timings, errors. Ships a bundled DuckDB store you deploy as a Kamal accessory (one generator, then SQL against production), or flushes onto the OpenTelemetry root span or a JSON log line instead. Includes a checkable attribute registry, test helpers, and agent skills for instrumenting, querying, and deploying.