mix continuum.runs.prune (continuum v0.7.1)

Safely prunes expired terminal workflow histories in bounded batches.

mix continuum.runs.prune --repo MyApp.Repo
mix continuum.runs.prune --repo MyApp.Repo --batch-size 100 --execute
mix continuum.runs.prune --repo MyApp.Repo --idempotency-policy delete --execute

The task is a dry run by default. Idempotency records are retained unless an operator explicitly selects delete.