Problem

The merged generic form-layout producer treats only literal <form> elements as layout-graph roots. formFallbackFinding() invokes it for both real forms and div-based pseudo-forms, but FormLayoutGraphBuilder::collect() returns before visiting controls when the root tag is not form. Styled pseudo-forms therefore emit generic/computed-layout-graph/v1 with nodes: [], no variants, and no diagnostic.

Work

• Treat the bounded fallback element passed to the builder as the graph root independent of its tag name.
• Preserve control references, wrapper parentage, computed layout, conditional variants, and existing bounds.
• Keep form semantics separate from generic layout topology.
• Emit explicit loss when a pseudo-form root cannot be represented.

Acceptance

• A styled div pseudo-form emits a root layout node and source-ordered control parentage.
• Literal form behavior remains unchanged.
• Empty graphs cannot silently claim successful layout capture.
• PHP transformer contract and full suites pass.

Found while reviewing merged PR #719 through GPT-5.6 Sol in OpenCode; Chris owns the issue and acceptance criteria.