fix: use the supplied launcher artwork

The old icon was the source art flattened into an opaque 432px square,
which hid the background layer entirely and left launchers sliding a
black rectangle during parallax.

The artwork now goes in as drawn. Android only ever shows the central
72 of the 108dp canvas, so it is padded to that ratio in matched black:
the mask crops the padding and never the composition. Ships as real
density buckets, with a monochrome silhouette traced from the ghost so
themed icons do not fall back to Android's generated one.

Author: Zingzy

app/src/main/res/drawable-nodpi/ic_launcher_full.png

@@ -1,8 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+  The supplied artwork, placed rather than redrawn. Android only ever shows
+  the central 72 of the 108dp canvas, so the art is padded out to that ratio
+  in matched black: the mask crops the padding, never the composition.
+
+  It sits in the background layer because the art is one flat picture. A
+  foreground layer would only earn its keep if the ghost were separate, and
+  splitting it would mean repainting the vignette underneath.
+-->
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@color/ic_launcher_background" />
-    <!-- The exact android-spoo.png art, untouched (resize only). -->
-    <foreground android:drawable="@drawable/ic_launcher_full" />
-    <!-- Themed icons need an alpha silhouette; opaque art renders blank. -->
-    <monochrome android:drawable="@drawable/ic_launcher_mono" />
+    <background android:drawable="@mipmap/ic_launcher_background" />
+    <foreground android:drawable="@android:color/transparent" />
+    <monochrome android:drawable="@mipmap/ic_launcher_monochrome" />
 </adaptive-icon>