DECLARATIVE-YAML-09: Declare required block kinds inside a section

What it demonstrates

Content leaves — requiring a typed table, a checkbox list, fenced code, or a word cap within a section.

Builds on: DECLARATIVE-YAML-08: Optional, alias, oneOf and gap section nodes

How it’s done

The declarative YAML artifact, verbatim — no code required.

body:
  sections:
    - section: Summary
      anchor: summary
      content: { maxWords: 120 }
    - section: Files to touch
      content:
        table:
          columns: [Location, Kind, Change]
          cells: { Kind: { enum: [new, modify, delete] } }
    - section: Acceptance criteria
      content: { list: { everyItem: checkbox } }

Surfaces exercised

• compileContent/compileLeaf: maxWords()
• table({columns,cells})
• list({everyItem})
• cells reuse compileSchema