⭐ Router Store

@ngrx/router-store — real source, 168/168 tests passing (1 skipped), 0 lint errors. Audited clean on its own logic, but surfaced a real composition-over-inheritance ripple: 3 call sites, in both production code and specs, relied on Store/ActionsSubject surface that the redesign had already removed — fixed by adapting to the composed state$/asObservable() API instead.

This is the second module (after effects) to hit the predicted ripple from the store redesign, confirming the fix generalizes rather than being a one-off adaptation specific to effects.