id: research/frontmatter-date-format
name: Date format compliance
description: Dates in frontmatter should follow ISO 8601 (YYYY-MM-DD)
severity: warn
applies-to:
  glob: findings/REF-*.md
checks:
  - type: frontmatter-format
    field: documented_date
    pattern: "^\\d{4}-\\d{2}-\\d{2}$"
  - type: frontmatter-format
    field: access_date
    pattern: "^\\d{4}-\\d{2}-\\d{2}$"