our plaintext copy style sucks

we shold copy more sensible plaintext to the clipboard and maybe even make it configurable.
At the moment it contains unnescessary many linebreaks and the name and timestamp of the beginning is not copied.

No file, test, or entry point is named. Start by locating the clipboard-copy flow in the TypeScript application and inspect the current plaintext formatting; done means the copied text has fewer unnecessary line breaks and includes the opening name and timestamp, with configurability clarified before implementation.

Written by the indexing model from the issue text.