feat(ui): About in drawer; higher-contrast app icon & splash

Add an "About" entry to the navigation drawer (below Settings) so the
About screen is reachable without opening Settings first.

Recolour the launcher icon and native splash to a white sprout on brand
green (#2F7D34) — the previous dark-green-on-light-green had almost no
contrast. Regenerate Android, iOS and web icons and the light/dark splash.

apps/app_seeds/android/app/src/main/res/values-v31/styles.xml

@@ -6,7 +6,7 @@
         <item name="android:windowFullscreen">false</item>
         <item name="android:windowDrawsSystemBarBackgrounds">false</item>
         <item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
-        <item name="android:windowSplashScreenBackground">#E7F1E0</item>
+        <item name="android:windowSplashScreenBackground">#2F7D34</item>
         <item name="android:windowSplashScreenAnimatedIcon">@drawable/android12splash</item>
     </style>
     <!-- Theme applied to the Android Window as soon as the process has started.

apps/app_seeds/android/app/src/main/res/values/colors.xml

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="ic_launcher_background">#E7F1E0</color>
+    <color name="ic_launcher_background">#2F7D34</color>
 </resources>

apps/app_seeds/lib/ui/app_drawer.dart

@@ -55,6 +55,14 @@ class AppDrawer extends StatelessWidget {
                 context.push('/settings');
               },
             ),
+            _DrawerItem(
+              icon: const Icon(Icons.info_outline),
+              label: t.about.title,
+              onTap: () {
+                Navigator.of(context).pop();
+                context.push('/about');
+              },
+            ),
           ],
         ),
       ),

apps/app_seeds/pubspec.yaml

@@ -66,30 +66,30 @@ dev_dependencies:
   flutter_launcher_icons: ^0.14.4
   flutter_native_splash: ^2.4.7
 
-# App launcher icon (green sprout on the light-green canvas). Regenerate with:
-#   dart run flutter_launcher_icons
+# App launcher icon: a white sprout on brand green (#2F7D34) for strong
+# contrast. Regenerate with: dart run flutter_launcher_icons
 flutter_launcher_icons:
   image_path: assets/icon.png
   android: true
   ios: true
   remove_alpha_ios: true
-  adaptive_icon_background: "#E7F1E0"
+  adaptive_icon_background: "#2F7D34"
   adaptive_icon_foreground: assets/icon_foreground.png
   web:
     generate: true
     image_path: assets/icon.png
-    background_color: "#E7F1E0"
+    background_color: "#2F7D34"
     theme_color: "#2F7D34"
 
-# Native splash: the sprout on the canvas colour, light & dark. Regenerate with:
-#   dart run flutter_native_splash:create
+# Native splash: white sprout on brand green, a darker green in dark mode.
+# Regenerate with: dart run flutter_native_splash:create
 flutter_native_splash:
-  color: "#E7F1E0"
+  color: "#2F7D34"
   color_dark: "#22521E"
   image: assets/splash_logo.png
   android_12:
     image: assets/splash_logo.png
-    color: "#E7F1E0"
+    color: "#2F7D34"
     color_dark: "#22521E"
 
 flutter:

apps/app_seeds/test/ui/about_screen_test.dart

@@ -24,6 +24,24 @@ void main() {
     );
   });
 
+  testWidgets('drawer About item opens the About screen', (tester) async {
+    LocaleSettings.setLocaleSync(AppLocale.en);
+    final db = newTestDatabase();
+    addTearDown(db.close);
+
+    await tester.pumpWidget(app(db));
+    await tester.pumpAndSettle();
+
+    await tester.tap(find.byIcon(Icons.menu));
+    await tester.pumpAndSettle();
+    await tester.tap(find.text('About')); // drawer entry
+    await tester.pumpAndSettle();
+
+    expect(find.text('種まき'), findsOneWidget);
+    expect(find.textContaining('digital Plantare'), findsOneWidget);
+    await disposeTree(tester);
+  });
+
   testWidgets('Settings About tile opens the About screen', (tester) async {
     LocaleSettings.setLocaleSync(AppLocale.en);
     final db = newTestDatabase();