- Bundle the real sprout logo (docs/logo.png → assets/logo.png) and show it on
the home menu instead of a Material icon.
- Settings screen: switch language (Español / English / system) via slang, plus
an About tile (logo, app name, one-line description). Drawer "Settings" is now
active and routes to /settings.
Tests: drawer Settings opens the screen and shows the language options. 54 green.
