PromptLedger v0.7 Adds Evaluation Runs and Regression Gates for Prompt Versioning

PromptLedger v0.7 has been released, introducing evaluation runs, metric comparisons, and policy-based regression gates to its prompt version management workflow. Previously, the tool could track prompt history and production labels but could not determine whether a newer prompt version actually performed better than its predecessor. The update allows external benchmark tools to record results — including accuracy, latency, and cost metrics — against specific prompt versions for later comparison. Users can compare metrics between two versions or labels and define gate policies that specify acceptable thresholds for regression in each metric. If a candidate version exceeds a defined regression limit, the gate command returns a non-zero exit code, enabling the check to be integrated into automated deployment pipelines.