Article Generator State Not Reset

When creating a new article after previously generating one, the article generator does not properly reset its state.

Current behavior:

• The PDF that was uploaded as a reference for the previous article is still displayed in the reference upload field when starting a new article.

• The website validation status still shows "Valid", even though no new website has been entered.

• Other information from the previously generated article also remains visible instead of being cleared.

Expected behavior:
Whenever the user starts creating a new article, the form should be completely reset. This includes:

• Clearing the previously uploaded reference PDF.

• Resetting the website validation status to its initial state (not validated).

• Removing all article-specific data from the previous session.

• Displaying an empty form, ready for a new article to be created.