fix(assets): update AppStream ID to org.zealdocs.zeal

AppStream specification strongly encourages lowercase ID.
Flatpak documentation recommends to avoid .desktop suffix in the ID.

.gitignore

@@ -36,4 +36,4 @@ squashfs-root/
 .vscode/
 
 # Linux appdata
-/assets/freedesktop/org.zealdocs.Zeal.appdata.xml
+/assets/freedesktop/org.zealdocs.zeal.appdata.xml

assets/freedesktop/CMakeLists.txt

@@ -12,16 +12,16 @@ if(UNIX AND NOT APPLE)
                       DESTINATION ${KDE_INSTALL_ICONDIR}
     )
 
-    configure_file( 
-        org.zealdocs.Zeal.appdata.xml.in 
-        org.zealdocs.Zeal.appdata.xml
+    configure_file(
+        org.zealdocs.zeal.appdata.xml.in
+        org.zealdocs.zeal.appdata.xml
     )
 
-    install(FILES ${CMAKE_BINARY_DIR}/assets/freedesktop/org.zealdocs.Zeal.appdata.xml
+    install(FILES ${CMAKE_BINARY_DIR}/assets/freedesktop/org.zealdocs.zeal.appdata.xml
             DESTINATION ${KDE_INSTALL_METAINFODIR}
     )
 
-    install(FILES "org.zealdocs.Zeal.desktop"
+    install(FILES "org.zealdocs.zeal.desktop"
             DESTINATION ${KDE_INSTALL_APPDIR}
     )
 endif()

assets/freedesktop/org.zealdocs.zeal.appdata.xml.in

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <component type="desktop">
-  <id>org.zealdocs.Zeal</id>
+  <id>org.zealdocs.zeal</id>
   <name>Zeal</name>
   <metadata_license>CC0-1.0</metadata_license>
   <project_license>GPL-3.0-or-later</project_license>

pkg/appimage/appimage-amd64.yml

@@ -9,7 +9,7 @@ AppDir:
   path: build.appimage/AppDir
 
   app_info:
-    id: org.zealdocs.Zeal
+    id: org.zealdocs.zeal
     name: zeal
     icon: zeal
     version: 0.6.1 # TODO: Use version from CMake.

src/app/main.cpp

@@ -216,7 +216,7 @@ int main(int argc, char *argv[])
     }
 
     // Set application-wide window icon. All message boxes and other windows will use it by default.
-    qapp->setDesktopFileName(QStringLiteral("org.zealdocs.Zeal.desktop"));
+    qapp->setDesktopFileName(QStringLiteral("org.zealdocs.zeal.desktop"));
     qapp->setWindowIcon(QIcon::fromTheme(QStringLiteral("zeal"),
                                          QIcon(QStringLiteral(":/zeal.ico"))));