The status parameter was used both as the assigned value (varchar column)
and in CASE comparisons against text literals, so Postgres deduced two
types for $2 and every run failed at SetRunStatus(running) with SQLSTATE
42P08; the failure also prevented marking the run failed, leaving it
queued. Cast every use to text.
Add TEST_DB_URL-gated repository tests (skipped without a database) that
exercise the landscape run/node SQL and the new dataset period/group
queries against a real Postgres, and document them in the README.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
