DECLARATIVE-YAML-07: Declare required body sections

What it demonstrates

Moving to the body plane: a sections grammar listing the H2 headings a document must contain, with ordering and unknown-section policy.

Builds on: DECLARATIVE-YAML-06: Declare array and nested object fields

How it’s done

The declarative YAML artifact, verbatim — no code required.

body:
  order: strict          # none | recognized-relative | strict
  allowUnknown: false
  sections:
    - section: Summary
    - section: Context
    - section: Decision
    - section: References

Surfaces exercised

• compileBody -> sections(opts, specs)
• order/allowUnknown LevelOpts
• section()