Function flattenStructuredBranches

flattenStructuredBranches(
    json: {
        attributes: Record<string, unknown>;
        meta?: Record<string, unknown>;
    } & StructuredBranchesJSON,
    options?: FlattenOptions,
): Record<string, unknown>
Fold an entity's structured branches into its flat attribute record. Structured values overwrite same-key flat attributes — the typed branch is the newer write path, so it wins deterministically.
Parameters
- json: { attributes: Record<string, unknown>; meta?: Record<string, unknown> } & StructuredBranchesJSON
  - attributes: Record<string, unknown>
  - Optionalmeta?: Record<string, unknown>
    
    Per-entity provenance. Optional so a caller assembling only the structured branches (tests, partial views) need not synthesize an empty record; entityToJSON always supplies it.
- Optionaloptions: FlattenOptions
Returns Record<string, unknown>