⭐ Router Store

@ngrx/router-store — real source, 168/168 tests passing (1 skipped), 0 lint errors. 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.

The code review audit is in progress on this module — 3/12 files in, already 3 real type-level bugs found and fixed (actions.ts, index.ts, models.ts), all declared-type-vs-actual-value mismatches that no runtime test had caught.