fix: protect set_target with try/except + cleanup build artifacts

.gitignore

@@ -1,3 +1,3 @@
 __pycache__/
 *.egg-info/
-build/
+build/*.pyc

mood_engine/main.py

@@ -189,7 +189,10 @@ class MoodEngine(ReachyMiniApp):
             final = current_pose + micro_pose_offset + idle_offset
             head = create_head_pose(yaw=final[0], pitch=final[1], roll=final[2], degrees=True)
             antennas = np.deg2rad(np.array([final[3], final[4]]))
-            reachy_mini.set_target(head=head, antennas=antennas)
+            try:
+                reachy_mini.set_target(head=head, antennas=antennas)
+            except Exception:
+                pass
 
             time.sleep(0.02)