Address review feedback on the metric/column uuid export fix:
- helpers.py: when importing a dataset config as a NEW dataset (edited
dataset uuid) while the original still exists, an unchanged child uuid
would be treated as new and violate the globally-unique constraint on
table_columns/sql_metrics. Drop the incoming uuid for a new child whose
uuid already exists so UUIDMixin assigns a fresh one, restoring the
pre-change clone-via-YAML behavior.
- import_test.py: give the round-trip folder leaves their semantic type
and assert the full imported folder structure; add a regression test for
the clone path.
- commands_tests.py: reword a time-anchored comment.
- UPDATING.md: note that exports now include child uuid fields and fail
schema validation on older releases (mixed-version fleets).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
c3adea9e69