In addition to the requested changes below I made a slight change to the refresh code.

function debounce(func: (…args: any[]) => void, wait: number) {
The Obsidian API already includes a function of the same name that does the same.

Response: code change implemented in 0.7.5

updateInterval: NodeJS.Timeout | null = null;
Use a regular number here, and use window.setTimeout everywhere.

Response: code change implemented in 0.7.5

const checkLayoutInterval = setInterval(async () => {
Remove this code.

Response: code change implemented in 0.7.5

cls: "recent-files-donation",
Wrong class name.
Also, the donation information is usually at the bottom of the settings.

Response: code change implemented in 0.7.5