Improve code architecture

As the topic says, I want to improve the code to reduce unnecessary repetitions and reduce bugs.

The issue is extremely vague; no specific files, repetitions, or bugs are mentioned. A newcomer would need to first understand the entire codebase to identify areas for architectural improvement. Start by exploring the repository structure, looking for common patterns or duplicated code. 'Done' would be a proposal or a refactored module, but the scope is undefined.

由索引模型根據 Issue 內容生成。