Description

To Add a How to use guide in the Settings (Options page) with screenshots that explains the common flows . For Example :

1. Clicking the injected "Go to Lichess Review" button and using the popup on game over state.
2. Extension popup with Open Lichess and Copy PGN actions

Advantages

1. Lowers onboarding friction and support questions.
2. Makes the main flows discoverable for new users.