Forward-looking robustness:
- recover-stuck-runs joins TaskRun UNION (not UNION ALL) task_run_v2, so if a
later copy step leaves a run briefly in both tables under the same id the
identical clones collapse to one row and DISTINCT ON stays unambiguous.
- Document that the findRuns "legacy" scope hint is for non-id predicates; an id
read already routes by format, so the hint is redundant there (and a
KSUID-only id predicate scoped legacy correctly returns nothing).
Dan Sutton
7c5f81b5c5