Close Unpinned Tabs on Startup von ADHD.exe

Closes non-pinned tabs when Firefox starts, while keeping pinned tabs open.

This extension is designed for people who use pinned tabs as a permanent workspace and do not want regular tabs restored across browser restarts.

Behavior:

• Keeps pinned tabs open
• Closes unpinned tabs on startup
• Only acts in windows that contain at least one pinned tab
• Does not collect or transmit user data