Example article — front-matter contract for Phase 5

This is a placeholder MDX article. Phase 6 wires the MDX rendering pipeline; Phase 5 authors the 8 cornerstone articles per docs/02-content-plan.md (3 of 8 healthcare- specific per docs/00-decisions.md decision #4).

What lands in Phase 5

• The 8 cornerstone articles, each ~2,500–3,500 words.
• 3 healthcare cornerstones (HIPAA architecture, prior-auth automation, claims as multi-agent workflow).
• The Vertex AI SDK migration article that targets the June 24, 2026 deadline.

What lands in Phase 6

• The MDX rendering shell and the article-page template.
• Tag-filter UI on /insights.
• Inline newsletter capture at the bottom of every article.