Add new file sthess.txt with initial content

[gogorichie]

This pull request introduces a minor update to the sthess.txt file. The change consists of adding a single line to the file.

[Copilot]

Pull request overview

Adds a new text file to the repository, but the current content does not appear to be meaningful or referenced elsewhere in the codebase.

Changes:

• Add sthess.txt containing a single line of text.

[Copilot]

This file appears to be a stray/placeholder addition: its name/content (stufff) isn’t referenced anywhere else in the repo. If it’s meant to be used, please give it a meaningful name/content and document or reference it; otherwise it should be removed to avoid adding dead artifacts to the repository.

Suggested change

	stufff
	This file is intentionally left blank.
	It is kept in the repository as a placeholder/documentation stub and is not used by the Stadium Wave Game runtime.