Per-program Flet client app IDs so the dock shows the right icons

Programs/SaraSort/Manifest.toml

@@ -25,3 +25,8 @@ Target = "{ApplicationsDir}/SaraSort.desktop"
 Path = "{ConfigDir}"
 Kind = "Config"
 Note = "SaraSort's settings, flowchart layout and your templates"
+
+# Shared with the other Flet programs; see Programs/FletIdentity.py.
+[[Templates]]
+Source = "../../FletIdentity.py"
+Target = "{ProgramDir}/FletIdentity.py"

Programs/SaraSort/Templates/Launch.sh

@@ -1,7 +1,8 @@
 #!/bin/sh
 # Written by SaraSuite. Runs from the app folder so Flet finds assets/.
-# The window's app ID, so the desktop matches it to {Name}.desktop (icon, name)
-# instead of showing every Flet program as "com.appveyor.flet".
-export FLET_APP_ID="{Name}"
+# A Flet client copy with the window app ID srhtnin.{Name}, so the desktop
+# matches the window to {Name}.desktop (StartupWMClass) instead of showing it
+# as "com.appveyor.flet". Empty if that fails: Flet then uses its own client.
+export FLET_VIEW_PATH="$("{Python}" "{ProgramDir}/FletIdentity.py" "srhtnin.{Name}")"
 cd "{AppDir}" || exit 1
 exec "{Python}" Main.py "$@"

Programs/SaraSort/Templates/SaraSort.desktop

@@ -7,4 +7,4 @@ Icon={AppDir}/assets/Icon.png
 Terminal=false
 Categories=Utility;
 StartupNotify=true
-StartupWMClass={Name}
+StartupWMClass=srhtnin.{Name}