nix: appstream: Add more information for Flathub

src/install/nix/blue-nebula.metainfo.xml.am

@@ -37,15 +37,23 @@
   <screenshots>
     <screenshot type="default">
       <image>https://raw.githubusercontent.com/blue-nebula/misc/master/screenshots/1.jpg</image>
-      <caption>Posing with fire on the map Venus</caption>
+      <caption>Posing with fire on map Venus</caption>
     </screenshot>
     <screenshot>
       <image>https://raw.githubusercontent.com/blue-nebula/misc/master/screenshots/2.jpg</image>
-      <caption>Mine fireworks on the map Vault</caption>
+      <caption>Mine fireworks on map Vault</caption>
     </screenshot>
     <screenshot>
       <image>https://raw.githubusercontent.com/blue-nebula/misc/master/screenshots/3.jpg</image>
-      <caption>Overlooking friendly fire on the map Cutec</caption>
+      <caption>Overlooking friendly fire on map Cutec</caption>
+    </screenshot>
+    <screenshot>
+      <image>https://raw.githubusercontent.com/blue-nebula/misc/master/screenshots/4.png</image>
+      <caption>Impulse sliding in third-person on map Castle</caption>
+    </screenshot>
+    <screenshot>
+      <image>https://raw.githubusercontent.com/blue-nebula/misc/master/screenshots/5.png</image>
+      <caption>Flaming an enemy on map Bloodlust</caption>
     </screenshot>
   </screenshots>
   <content_rating type="oars-1.1">
@@ -54,6 +62,13 @@
     <content_attribute id="social-chat">intense</content_attribute>
   </content_rating>
   <releases>
-    <release version="1.6.1" date="2025-12-31"/>
+    <release version="1.6.1" type="stable" date="2025-12-31">
+      <url type="details">https://blue-nebula.org/posts/2026-01-05-first-release/</url>
+      <description>
+        <p>
+          Initial release since Red Eclipse 1.6.0
+        </p>
+      </description>
+    </release>
   </releases>
 </component>

src/scripts/update-icons

@@ -1,14 +1,13 @@
 #! /bin/sh
 #
-# This script updates the application icons defined in install/nix/blue_nebula_**.png from a 1:1 ratio logo using ImageMagick.
-# The sizes we want (used in the for loop) must also be defined in install_nix.cmake
+# This script updates the application icons defined in
+# install/nix/blue_nebula_**.png from a 1:1 ratio logo using ImageMagick.
+#
+# The sizes we want (used in the for loop) must also be defined in
+# install_nix.cmake
 
 for i in 16 32 48 64 128 256 512; do
     echo "Scaling icon to ${i}x${i}..."
-    convert -resize "${i}x${i}" "$1" "../install/nix/blue-nebula_${i}.png"
-    if [ "$i" -eq 512 ]; then
-        cp "../install/nix/blue-nebula_${i}.png" ../../data/textures/icon.png
-        break
-    fi
+    magick "$1" -resize "${i}x${i}" "../install/nix/blue-nebula_${i}.png"
 done
 echo "Done!"