fix(android): shrink the colored launcher-icon foreground to match the themed layer

On the test phone's launcher the standard (colored) adaptive foreground rendered noticeably larger
than the themed (monochrome) layer — identical geometry, but the launcher insets/scales the two
differently — so the colored circles overflowed the circle mask. Shrink only the foreground group
(scale 0.105 → 0.073, re-centred) to match the correctly-sized monochrome; the monochrome layer is
unchanged.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

clients/android/app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -10,10 +10,10 @@
     android:viewportWidth="108"
     android:viewportHeight="108">
     <group
-        android:scaleX="0.105"
-        android:scaleY="0.105"
-        android:translateX="3.57"
-        android:translateY="-0.62">
+        android:scaleX="0.073"
+        android:scaleY="0.073"
+        android:translateX="18.94"
+        android:translateY="16.03">
         <path
             android:fillColor="#A79FF8"
             android:pathData="M403.037,791.672c107.586,0 194.41,-86.824 194.41,-194.41c0,-107.586 -86.824,-194.41 -194.41,-194.41c-107.586,0 -194.41,86.824 -194.41,194.41c0,107.586 86.824,194.41 194.41,194.41Z" />