me-web? 0.3.1: sharing offered when the check ends; an Android icon that fits

- The offer to share the findings appeared only after the "test from outside?" question was
  answered, so scrolling past it meant no offer at all. It now appears as soon as the check
  ends (hidden only while the outside test runs), and a payload built later still carries
  the outside test's result.
- Android gets an adaptive launcher icon: the drawing as a vector inside the 66-unit safe
  zone over the background colour, plus a monochrome layer for themed icons. The splash
  screen uses the same vector, so it is neither cut by the circle nor blurred from a
  192-pixel picture. The PNG stays for Android 7.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012CzABvBkbcFqoHdmi8b9WB

src/MeWeb.Android/Resources/values-v31/styles.xml

@@ -6,7 +6,7 @@
     <item name="android:windowBackground">@null</item>
     <item name="android:windowNoTitle">true</item>
     <item name="android:windowSplashScreenBackground">@color/splash_background</item>
-    <item name="android:windowSplashScreenAnimatedIcon">@drawable/icon</item>
+    <item name="android:windowSplashScreenAnimatedIcon">@drawable/icon_foreground</item>
     <item name="postSplashScreenTheme">@style/MeWebTheme.Main</item>
   </style>
   <style name="MeWebTheme.Main" parent="MeWebTheme.NoActionBar">