concept
CH column metadata: esios.alert_rules.next_due_at
Precomputed instant the worker tick claims on (partial index WHERE is_active). NULL for on_ingest rules (driven by the post-ingest hook, not the clock).
# `esios.alert_rules.next_due_at`
Precomputed instant the worker tick claims on (partial index WHERE is_active). NULL for on_ingest rules (driven by the post-ingest hook, not the clock).