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Log events

Every event accepted by geno_lewm.observability.GenoLeWMLogger. Generated from geno_lewm.observability.EVENTS at docs-build time; renaming an event is a MAJOR change per RFC-0013.

Payload keys not in allowed_keys are dropped by the redaction filter (see RFC-0013 §3.5). Standardized fields (step, epoch, phase, duration_ms, trace_id, span_id, error_code) are promoted out of data and are always allowed at the top level.

Event Severity Allowed data keys Summary
training.run.start info config_path, device, git_sha, model_id, world_size trainer initialized
training.run.end info best_loss, best_step, reason trainer exited
training.step debug grad_norm, loss, loss_pred, loss_reg, lr every training step (sampled)
training.epoch.end info loss, loss_pred, loss_reg, lr, samples every epoch
training.checkpoint.write info path, size_bytes, tag checkpoint saved
training.collapse.alert warn criterion, threshold, value collapse alert criterion tripped
training.metric info kind, name, unit, value scalar metric logged
eval.run.start info benchmark, dataset, n_items benchmark started
eval.run.end info benchmark, elapsed_s, metrics benchmark finished
eval.regression error baseline, current, delta, metric, threshold smoke eval regression
data.cache.hit debug key, shard_id cache hit
data.cache.miss debug key, shard_id cache miss
data.shard.write info n_rows, path, shard_id, size_bytes new shard written
inference.score.start debug model_id, variant_id scoring call entered
inference.score.end debug category, score, variant_id scoring call returned
inference.batch.end info batch_id, n, throughput_per_s batch finished
inference.network.blocked error operation, url_host fail-closed network guard tripped
provenance.receipt.write info model_id, n_outputs, path receipt written
provenance.verify.start info model_id, path verifier started
provenance.verify.end info ok, path verifier returned
provenance.verify.mismatch error expected, got, kind a hash check failed
error error details, message, remediation a GenoLeWMError raised inside a logged span