chore: enhance metainfo for flathub

org.jousse.vincent.Pomodorolm.metainfo.xml

@@ -1,8 +1,8 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <component type="desktop-application">
   <id>org.jousse.vincent.Pomodorolm</id>
-  <name>pomodorolm</name>
-  <summary>A simple, good looking and configurable pomodoro tracker with tray icon.</summary>
+  <name>Pomodorolm</name>
+  <summary>Modern pomodoro time tracker</summary>
   <developer_name>Vincent Jousse</developer_name>
   <metadata_license>CC0-1.0</metadata_license>
   <project_license>AGPL-3.0-only</project_license>
@@ -18,10 +18,19 @@
   <launchable type="desktop-id">org.jousse.vincent.Pomodorolm.desktop</launchable>
   <screenshots>
     <screenshot type="default">
-      <image>https://raw.githubusercontent.com/vjousse/pomodorolm/main/screenshot.png</image>
+      <image xml:lang="en">https://raw.githubusercontent.com/vjousse/pomodorolm/main/screenshot-main-window.png</image>
+      <caption>Main window of Pomodorolm</caption>
+    </screenshot>
+
+    <screenshot>
+      <image xml:lang="en">https://raw.githubusercontent.com/vjousse/pomodorolm/main/screenshot.png</image>
       <caption>Multiple screens of Pomodorolm with the default theme</caption>
     </screenshot>
   </screenshots>
+  <branding>
+    <color type="primary" scheme_preference="light">#faa298</color>
+    <color type="primary" scheme_preference="dark">#f6f2eb</color>
+  </branding>
   <content_rating type="oars-1.1" />
   <releases>
     <release version="0.3.1" date="2024-11-07">