contact-hud: the HUD reads the player's own ContactOf and book; TargetedBy and the spotted blink go

Selection is nothing the selected ship can sense: TargetedBy, TargetedByCount, their subscriptions and the music
read of them are deleted. Indicator fills, the target panel, the compass, music and the enemy schematic rows now
read CurrentEntity's ContactOf / RevealsOf / RevealedSubjects (new, the book's keys); the schematic rows are built
by one builder from the book and rebuilt when the revealed set changes. Impact hull effect and projectile hit
effects at another ship's position draw only through ActionGameManager.DrawsAt (the player's own ship or a Tracked
contact). Builds untested in Unity at this commit; tests NothingReadsSelection and RevealedSubjectsListsTheBook.

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

Assets/Scripts/Zone Display/ZoneRenderer.cs

@@ -571,8 +571,7 @@ public class ZoneRenderer : MonoBehaviour
                 var distance = length(difference);
                 
                 entityInstance.CompassIcon.gameObject.SetActive(
-                    PerspectiveEntity.EntityInfoGathered.ContainsKey(entityInstance.Entity) && 
-                    PerspectiveEntity.EntityInfoGathered[entityInstance.Entity] > Settings.GameplaySettings.TargetDetectionInfoThreshold &&
+                    PerspectiveEntity.ContactOf(entityInstance.Entity).Tracked &&
                     distance > _minimapDistance);
                 entityInstance.CompassIcon.transform.rotation = Quaternion.Euler(0, 0, Mathf.Atan2(difference.y, difference.x) * Mathf.Rad2Deg - 90);
             }