remove wrap_count from OrbitTracker

Replace int wrap_count with bool initialized flag.
wrap_count was redundant with the accumulated_rotation threshold check.
Cleaner semantics: initialized tracks first-call baseline,
accumulated_rotation alone determines orbit completion.

src/test_utilities.cpp

@@ -51,7 +51,7 @@ OrbitTracker* create_orbit_tracker_with_min_time(int body_index, double min_time
     tracker->initial_angle = 0.0;
     tracker->previous_angle = 0.0;
     tracker->accumulated_rotation = 0.0;
-    tracker->wrap_count = 0;
+    tracker->initialized = false;
     tracker->orbit_completed = false;
     tracker->time_at_completion = 0.0;
     tracker->min_time_seconds = min_time_seconds;
@@ -82,7 +82,7 @@ static void reset_tracker_fields(OrbitTracker* tracker) {
     tracker->initial_angle = 0.0;
     tracker->previous_angle = 0.0;
     tracker->accumulated_rotation = 0.0;
-    tracker->wrap_count = 0;
+    tracker->initialized = false;
     tracker->orbit_completed = false;
     tracker->time_at_completion = 0.0;
 }
@@ -111,11 +111,11 @@ void update_orbit_tracker(OrbitTracker* tracker, CelestialBody* body, CelestialB
         current_angle = atan2(relative_pos.y, relative_pos.x);
     }
 
-    if (tracker->wrap_count == 0) {
+    if (!tracker->initialized) {
         tracker->initial_angle = current_angle;
         tracker->previous_angle = current_angle;
         tracker->accumulated_rotation = 0.0;
-        tracker->wrap_count = 1;
+        tracker->initialized = true;
         return;
     }
 
@@ -123,11 +123,9 @@ void update_orbit_tracker(OrbitTracker* tracker, CelestialBody* body, CelestialB
 
     if (angle_diff > M_PI) {
         angle_diff -= 2.0 * M_PI;
-        tracker->wrap_count++;
     }
     if (angle_diff < -M_PI) {
         angle_diff += 2.0 * M_PI;
-        tracker->wrap_count++;
     }
 
     tracker->accumulated_rotation += angle_diff;

src/test_utilities.h

@@ -16,7 +16,7 @@ struct OrbitTracker {
     double initial_angle;
     double previous_angle;
     double accumulated_rotation;
-    int wrap_count;
+    bool initialized;
     bool orbit_completed;
     double time_at_completion;
     int body_index;