Config-driven mapping from (target_entity, target_attribute) to storage
shape (scalar/collection/relation), PHP type, and identity-key
eligibility. Replaces any name-suffix matching (e.g. _tags, _skills) —
those are convention-not-contract and reject by design.
Used by publish guards now and (in session 2) by FormBindingApplicator.
Refs: RFC-WS-6.md §4 (V1)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- FormFieldBindingMergeStrategy::nullWinnerBehaviour() and
isValidForScalarTargets() encode the per-strategy null-winner matrix
(RFC Q7) and the collection-only restriction (RFC V1).
- ResolvedBinding/BindingApplicationResult/BindingPassResult readonly
DTOs for the binding pipeline. Construction-time validation for
trust level. Apply-status derived from result aggregate.
Note: the existing enum is named FormFieldBindingMergeStrategy (not
MergeStrategy as the prompt sketched). Methods added to it directly.
Refs: RFC-WS-6.md §3 (Q4, Q7), §4 (V1)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
