issue-814 Rename created_date to updated_date in assignments and related components

issue-814 Rename created_date to updated_date in assignments and related components

issue-814 Implement visibility management for assignments with new dropdown component

issue - 814 Add local date handling methods and update DateTimePicker to support local time

issue-814 Refactor date handling to use canonical UTC methods and improve date formatting in assignment components

issue-814 Add DateTimePicker component and update assignment forms to use it

issue-814 Add created_date and visible_on fields to assignments

issue-814 Rename created_date to updated_date in assignments and related components

Author: morozov-av

bases/rsptx/admin_server_api/routers/instructor.py

@@ -1081,6 +1081,7 @@ async def _copy_one_assignment(
             course=target_course.id,
             name=old_assignment.name,
             duedate=due_date,
+            updated_date=datetime.datetime.now(),
             description=old_assignment.description,
             points=old_assignment.points,
             threshold_pct=old_assignment.threshold_pct,

bases/rsptx/admin_server_api/routers/lti1p3.py

@@ -77,6 +77,7 @@
     fetch_instructor_courses,
     validate_user_credentials,
 )
+from rsptx.db.crud.assignment import is_assignment_visible_to_students
 
 from rsptx.configuration import settings
 from rsptx.logging import rslogger
@@ -445,7 +446,7 @@ async def launch(request: Request):
                 status_code=400, detail=f"Assignment {lineitem_assign_id} not found"
             )
 
-        if not rs_assign.visible and not message_launch.check_teacher_access():
+        if not is_assignment_visible_to_students(rs_assign) and not message_launch.check_teacher_access():
             raise HTTPException(
                 status_code=400,
                 detail=f"Assignment {rs_assign.name} is not open for students",