add date calendar popup so that user can select
the date more easily
fix some file dialog title display issue
default max diff time change to 30 minutes
This commit fixes memory management issues in the
ALMainWindow class where config window and
task threads were not properly deleted after use,
leading to continuously increasing memory usage.
The fix ensures that all GUI components are
deleted after close and background threads are
correctly terminated.
previous time that you can select the next day is 19:00, this may be
tensive, because the time rested to modify the reserve date is limited.
So in current commit, we change this into 18:00.
The previous implementation directly replaced the current
in-memory state of system and user configurations during
file loading. This behavior did not align with user
expectations, as it could discard unsaved changes made in the UI.
The fix ensures that loading a configuration file only
updates the internal in-memory state of system and user
configurations, preserving any unsaved UI modifications.
KenanZhu