ImpactFeedbackTests: the marker fixture records the reveal that makes it aimable

Master's feedback tests aimed at a marker the shooter's book never held; the reveals
rule (book holds the item, fitted, not destroyed) refuses that. Same fixture step the
FireControlCut12 tests use (RecordReveal via LaunchFlash).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/Aetheria.Shared.Tests/ImpactFeedbackTests.cs

@@ -44,6 +44,7 @@ public sealed partial class FireControlCut124Tests
     // Fires until a shot lands; returns that outcome and the absorbs the target published for that shot alone.
     private static (ShotOutcome Outcome, List<AbsorbEvent> Absorbs) FireAtTheMarker(Engagement e, List<IDisposable> subs)
     {
+        e.Shooter.RecordReveal(e.Target, e.Custom["Marker"], SignatureChannel.LaunchFlash); // the book must hold the item: aiming is earned by seeing it act
         Assert.True(e.Shooter.TrySelectTargetItem(e.Custom["Marker"]), "fixture: the marker is aimable");
         var absorbs = Collect(e.Target, subs);
         ShotOutcome landed = null;