Reference: Contract Redline Assistant

Architectural notes

Reference architecture for a legal-team agent that reviews counterparty
contracts against the company's standard playbook, flags deviations,
proposes redlines, and produces a summary memo.

Why these picks:
- Opus for the reasoning-heavy review pass; cost is justified by hourly
  rate of a junior associate it replaces.
- Zep's temporal graph tracks playbook clause evolution over time.
- Guardrails on output (no contract advice ungrounded in playbook).
- Eval against attorney-graded contract set; nightly regression.

Common gotchas:
- Hallucinated case citations are the existential risk; require citation
  grounding for every legal claim.
- Bias toward "flag for human review" over autonomous changes.