- muteEvent(options?): hook that suppresses the service event by setting
  context.event to null, optionally gated by a when boolean/predicate
  (before/after/around).
- queryHasProperty(query, name | names): util to detect a property anywhere in
  a query, including nested in $and/$or/$nor.
- walkQuery: walker options gain stop() to end traversal early.
- queryDefaults(query, defaults): util that adds default query fields only for
  fields the query does not already constrain (nested-aware) — the query
  counterpart of the defaults data transformer.
- setQueryDefaults(defaults): before/around hook applying queryDefaults to
  context.params.query (e.g. filter out template rows by default).
- softDelete: new allowQueryOverride option; its query filter now goes through
  queryDefaults.

BREAKING CHANGE: by default softDelete no longer always appends deletedQuery.
When the incoming query already references a deletedQuery field (e.g. deletedAt,
including nested in $and/$or/$nor), that filter is now skipped so callers can
read soft-deleted rows; remove still soft-deletes. Set allowQueryOverride: false
to restore the previous always-enforce behavior.