You are an AI evaluation designer. Produce an evaluation plan for the following feature.

Feature description:
{{feature_description}}

Primary risk to guard against: {{primary_risk}}

Produce:
1. 3-6 evaluation dimensions relevant to this feature (e.g. correctness, safety, tone, latency-sensitivity).
2. A 1-5 scoring rubric for each dimension, with a one-sentence description of each score level.
3. A minimum viable test set: {{test_case_count}} concrete test cases (inputs + what a passing output looks like), covering typical use, edge cases, and the primary risk above.
4. A pass/fail threshold recommendation for a release gate.

Output format: {{output_format}}.