CngxFilterEditorComponent

Contract every consumer-supplied custom editor component must satisfy when registered against CNGX_FILTER_EDITORS.

Shape mirrors Angular 21 Signal Forms' FormValueControl<T>: the required value is a ModelSignal so two-way binding wires through [(value)] without a ControlValueAccessor. The optional fieldDef, expression, and disabled inputs are projected by the filter-builder row when the editor is mounted; consumers declare only the inputs they care about - undeclared inputs are skipped, never an error.

How projection works: the rows mount registered component editors through CngxFilterValueEditorHost (ViewContainerRef.createComponent

• setInput), which pushes the current expression value into value and reads editor-originated value changes back into the row's write sink - value.set(...) inside the editor lands in the filter tree.

Echo-guard semantics: both sync directions are guarded by a value equality (arrayEqual when both sides are arrays - fresh [min, max] / list references must not loop - Object.is otherwise, overridable via the host's valueEquals input), so a pushed value never re-enters the sink and a written-back value never re-pushes.

disabled sourcing: projected from the mounting surface's disabled state. The shipped rows currently expose no row-level disabled state and mount editors enabled; declare the input to stay forward-compatible with disabled-aware hosts.