Update layout, settings, and bulk upload password forcing

backend/main.py

@@ -223,6 +223,8 @@ def change_password(payload: ChangePasswordRequest, session: Session = Depends(g
         
     hashed_password = bcrypt.hashpw(payload.new_password.encode('utf-8'), bcrypt.gensalt()).decode('utf-8')
     current_user.password_hash = hashed_password
+    if current_user.school == "BULK_REGISTERED":
+        current_user.school = None
     session.add(current_user)
     session.commit()
     return {"success": True, "message": "Password updated successfully"}
@@ -273,6 +275,7 @@ async def bulk_register_students(file: UploadFile = File(...), session: Session
             tier=tier,
             student_class=models.ClassEnum.TWELFTH,
             medium=models.MediumEnum.ENGLISH,
+            school="BULK_REGISTERED",
             city="Unknown",
             state="Unknown"
         )
@@ -356,10 +359,8 @@ def register(payload: RegisterPayload, session: Session = Depends(get_session)):
     student_class = class_map.get(payload.student_class or "12", models.ClassEnum.TWELFTH)
     medium = medium_map.get(payload.medium or "English", models.MediumEnum.ENGLISH)
     
-    # Calculate trial_end based on admin settings
-    trial_end = None
-    if settings.enable_free_trial and settings.trial_duration_days > 0:
-        trial_end = datetime.utcnow() + timedelta(days=settings.trial_duration_days)
+    # Set trial_end directly to 15 days
+    trial_end = datetime.utcnow() + timedelta(days=15)
     
     new_user = models.User(
         name=payload.name,