add background for android icon

assets/background.svg

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="100mm"
+   height="100mm"
+   viewBox="0 0 100 100"
+   version="1.1"
+   id="svg1"
+   xml:space="preserve"
+   inkscape:version="1.4.3 (0d15f75042, 2025-12-25)"
+   sodipodi:docname="background.svg"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"><sodipodi:namedview
+     id="namedview1"
+     pagecolor="#505050"
+     bordercolor="#eeeeee"
+     borderopacity="1"
+     inkscape:showpageshadow="0"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#505050"
+     inkscape:document-units="mm"
+     inkscape:zoom="1.0847363"
+     inkscape:cx="57.156749"
+     inkscape:cy="214.33781"
+     inkscape:window-width="1904"
+     inkscape:window-height="971"
+     inkscape:window-x="35"
+     inkscape:window-y="32"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="layer1" /><defs
+     id="defs1"><linearGradient
+       id="linearGradient10"
+       inkscape:collect="always"><stop
+         style="stop-color:#c7a312;stop-opacity:1;"
+         offset="0"
+         id="stop10" /><stop
+         style="stop-color:#26a0b3;stop-opacity:1;"
+         offset="1"
+         id="stop11" /></linearGradient><linearGradient
+       inkscape:collect="always"
+       xlink:href="#linearGradient10"
+       id="linearGradient11"
+       x1="20.031296"
+       y1="32.697563"
+       x2="90.709213"
+       y2="66.3423"
+       gradientUnits="userSpaceOnUse" /></defs><g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"><rect
+       style="fill:url(#linearGradient11);fill-opacity:1;stroke:none;stroke-width:7.99999;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:none"
+       id="rect10"
+       width="100"
+       height="100"
+       x="0"
+       y="0"
+       ry="28.294127" /></g></svg>

pubspec.yaml

@@ -77,7 +77,7 @@ flutter_launcher_icons:
   ios: true
   android: true
   image_path: assets/icon.png
-  adaptive_icon_background: "#000000"
+  adaptive_icon_background: assets/background.png
   adaptive_icon_foreground: assets/foreground.png
   remove_alpha_ios: true
   windows: