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Nested field paths serialize as segments without flattening literal dots · case 02

Nested field paths serialize as segments without flattening literal dots is violated by the widget projection.

Member previewVariant 2 · 3 implementations · 10 checks per implementation

Case contract

The filter wire format represents scalar, set, range and unary constraints with distinct operand structures; omission differs from a null scalar operand. This example checks: Nested field paths serialize as segments without flattening literal dots.

Why this case matters

Filter-widget state and serialization must preserve user constraints while the view changes.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
contract fixture 0	`{"field-path": {"path": "x"}, "operator-preserve": "EQ", "range-envelope": {"lower": null, "upper": null}, "scalar-envelope": {"value": null}, "set-envelope": {"values": []}, "unary-envelope": {"operator": "EQ", "value": null}}`	`{"field-path": {"path": ["x"]}, "operator-preserve": "EQ", "range-envelope": {"lower": null, "upper": null}, "scalar-envelope": {"value": null}, "set-envelope": {"values": []}, "unary-envelope": {"operator": "EQ", "value": null}}`	Failed

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