chore: update readme with screenshots

README.md

@@ -74,6 +74,11 @@ On Windows PowerShell:
 - Cleartext traffic is enabled for local HTTP bridge servers.
 - The app uses a basic bridge API at `/api/state`, `/printer/print/*`, `/api/light`, `/api/temperature`, and `/api/camera/*`.
 
+## Screenshots
+![Server Connection](screenshots/screenshot1-server_connect.jpg)
+![Printing](screenshots/screenshot2-printing.jpg)
+![Idle](screenshots/screenshot3-idle.jpg)
+
 ## License
 
 This repository does not include a license file. Add one if you want to define reuse terms.