Improve AI: bed memory (30-block search), relationship-based follow goal, crouch fixes

- EllieSleepGoal: check stored bedPos first, search 30 blocks on miss
- releaseBed() no longer clears memory; forgetBed() for destruction
- New FollowPlayerGoal: 50-75% distant follow, 75-99% closer, 100% approach
- fix: crouch animation thenLoop, idle doesn't override crouching
- fix: sleep Y rotation = facing.toYRot() (head toward headboard)
- fix: checkLowCeiling scan range reduced (2-4 blocks, 3 for path)

src/main/java/me/sashegdev/fabled_hearts/ai/EllieSleepGoal.java

@@ -29,10 +29,19 @@ public class EllieSleepGoal extends Goal {
         if (!ellie.level().isNight() && !ellie.isTired()) return false;
         if (ellie.isSleeping()) return false;
         if (ellie.hurtTime > 0) return false;
-        bedPos = findNearestBed();
+
+        bedPos = findBed();
         return bedPos != null;
     }
 
+    private BlockPos findBed() {
+        BlockPos stored = ellie.getBedPos();
+        if (stored != null && isFreeBed(stored) && ellie.distanceToSqr(Vec3.atCenterOf(stored)) < 50 * 50) {
+            return stored;
+        }
+        return findNearestBed();
+    }
+
     @Override
     public void start() {
         claimed = false;