feat: add Legal Document Review agent to Specialized Division

[epowelljr]

Summary

Adds a Legal Document Review Agent (specialized/legal-document-review.md) to the Specialized Division — an attorney-ready first-pass document reviewer covering contracts, litigation documents, real estate agreements, and compliance review across any practice area.

This agent is explicitly scoped as a legal tool, not a legal advisor: every output is framed as flagged for attorney review. The value is in the thoroughness and structure — surfacing risks, missing terms, non-standard clauses, jurisdiction flags, and version comparison results in a format attorneys can act on immediately rather than read from scratch.

Key capabilities:

• Standardized document summary template with all material terms captured at a glance
• Risk clause flagging with severity levels (High / Medium / Low) and market standard context
• Explicit absence detection — flags when limitation of liability, indemnification, or dispute resolution clauses are missing, not just when they're problematic
• Version comparison that captures formatting changes, defined term modifications, and minor wording changes (not just redline-obvious edits)
• Jurisdiction-specific enforceability flags
• Every output closes with prioritized recommended actions for the reviewing attorney

Why this fills a gap: Legal is one of the most document-intensive professional domains and has no representation in the Agency. Document review is the highest-volume, most time-consuming legal task — and the most amenable to AI-assisted first-pass work.

Test plan

• Verify frontmatter fields match the existing agent format
• Confirm the agent flags a missing limitation of liability clause, not just problematic ones
• Verify outputs are framed as "flagged for attorney review," never as legal conclusions
• Check that jurisdiction-specific enforceability is noted when relevant
• Confirm every output ends with prioritized recommended attorney actions

cc @msitarzewski — happy to adjust scope, naming, or formatting to match your conventions before merge.