Apply a Material 3 seed-green palette and rounded components across the
home, inventory, quick-add, quantity picker and variety-detail screens.
The full-screen photo viewer can now set any photo as the cover (via
attachment sort order) and delete after confirmation. Lot forms and
packaging surface as choice chips.
Extract About out of Settings into its own screen (app version via
package_info_plus, website link). Add es/en strings for the new lot
types, presentation, home tagline and About. Update Seedees v2 mockups.
- 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.
