Refactor Widget and Calendar for Memory & CPU Efficiency

[khumnath]

as mentioned here my next goal will be on performance. #36

[khumnath]

I have pushed commit on dev branch to address a memory leak on WidgetandCalendar` components.
The previous implementation was holding onto unnecessary references, leading to increased memory usage over time.
This change resolves the issue identified in #39 by releasing those references when they are no longer needed.
This should significantly reduce the memory footprint of the application and improve stability, especially during long sessions.

[khumnath]

after update for memory saftey day detaila on day click breaks. i will see that later.

[khumnath]

@wintersnowgod: I believe the memory leak issue has been addressed with the latest merge on the main branch via pull request #38. Could you please check if the problem is solved on your end? Any feedback on new bugs would be greatly appreciated!