Question branch2

[minghowC]

What changes?

HistoryPage.js:
As seen in demo, it is an updated page to filter history results.

QuestionList.js:
I merge my filter functionality (e.g. by topic and difficulty level) with Zhihui's design choice of UI.

1. Added two key filter variables:
   [const [filters, setFilters] = useState({ difficulty: '', category: '' });
2. Added two functions:
   handleInputChange: Updates filters when input changes
   filterQuestions: Accepts filter inputs and returns a filtered list.

Let's compare the ver1 (original) and ver2:

Controller.ts:
I added an error handling in get Method.

• Added a try-catch block to handle errors when invoking getQuestionsByFilter.
• In case of an error, the server responds with a 500 status code and a descriptive message: "Error fetching filtered questions".