Starter templates

7 founder-approved rubric templates, each with golden fixtures.

• agent-action-gate — 4 criteria
• content-policy-basic — 4 criteria
• extraction-qa-invoice — 4 criteria
• listing-quality — 4 criteria
• rag-grounding-check — 4 criteria
• summary-faithfulness — 3 criteria
• support-reply-quality — 4 criteria