0.8.92

Added

• Added an eval-suite-regression-notifier trigger example that runs a scheduled
  eval pack, gates it with std/eval/stats::regression_gate, and posts Slack
  verdicts only on regression or improvement flips.

Fixed

• Fixed nil-bearing Postgres queries whose params Postgres cannot infer
  failing on the new describe-then-bind path. The describe-then-bind fix learns
  per-slot OIDs via prepare_with(sql, &[]), which forces Postgres to infer
  every $n from query structure alone. For a query with a genuinely
  ambiguous slot (e.g. SELECT $1 IS NULL, real failure
  could not determine data type of parameter $3), the describe probe itself
  errored and the whole query failed — even though the pre-describe-then-bind
  behavior (bind the nil as a text NULL) worked. Inside a pg_transaction
  the failed probe also aborted the transaction (current transaction is aborted), so even a same-connection fallback could not recover. The describe
  probe is now best-effort: when prepare_with fails, Harn no longer
  propagates the error — it returns no per-slot OIDs (cached, since the failure
  is deterministic per SQL structure) and the bind path falls back to the legacy
  text NULL, which is strictly ≥ the old behavior. When the probe runs inside a
  caller transaction it is wrapped in a SAVEPOINT _harn_describe_probe
  (released on success, rolled back on failure) so a failed probe never taints
  the caller's transaction — the ambiguous query succeeds via the fallback and
  the transaction stays usable for subsequent statements and commit. The
  all-non-null fast path and the successful-describe path are unchanged (no extra
  round-trips when describe succeeds; the savepoint is added only around the
  in-transaction probe).

Install / Upgrade

cargo install harn-cli

Full Changelog: v0.8.91...v0.8.92