Optional. Project status: Open (actively recruiting), Ongoing (in progress), or Concluded (completed).
Optional. Use YYYY-MM-DD for full date (e.g., "2025-01-15") or YYYY-MM for month only (e.g., "2025-01").
ℹ️ Month-only date detected. The markdown file will automatically include date_original and date_month_only fields for proper formatting.