fix(phase26): BUG-10 side effect — preserve trips when OBD never connected

modules/app_sql.py

@@ -390,6 +390,11 @@ def refresh_trips(force=False):
             (rebuild_start_id,),
         ).fetchall()
 
+    from modules import app_obd
+    if not app_obd.was_car_ever_connected():
+        # Never connected to the car — preserve existing trips, don't delete them.
+        return conn.execute("SELECT COUNT(*) FROM trips").fetchone()[0]
+
     trips = app_trip.build_trip_summaries(rows)
     with _conn_lock:
         try: