build: configure platform-specific packaging tasks and add ProGuard rules for Ktor dependencies

Author: Coding-Meet

.github/workflows/build-desktop.yml

@@ -72,7 +72,19 @@ jobs:
           echo "updater_url=$UPDATER_URL" >> composeApp/src/jvmMain/resources/props.properties
           echo "feedback_url=$FEEDBACK_URL" >> composeApp/src/jvmMain/resources/props.properties
       - name: Build native packages
-        run: ./gradlew packageReleaseDistributionForCurrentOS --stacktrace
+        shell: bash
+        run: |
+          case "${{ matrix.format }}" in
+            macos-arm|macos-intel)
+              ./gradlew packageReleaseDmg --stacktrace
+              ;;
+            windows)
+              ./gradlew packageReleaseMsi --stacktrace
+              ;;
+            linux)
+              ./gradlew packageReleaseDeb --stacktrace
+              ;;
+          esac
 
       # macOS ARM
       - name: Rename macOS ARM DMG

composeApp/compose-desktop.pro

@@ -108,4 +108,13 @@
 -keeppackagenames org.jsoup.nodes
 -keep public enum * {    public static **[] values();    public static ** valueOf(java.lang.String); }
 
--ignorewarnings
+-ignorewarnings
+
+# Ktor (HTTP client). Many internals resolved via ServiceLoader / reflection.
+-keep class io.ktor.** { *; }
+-keepclassmembers class io.ktor.** { *; }
+-dontwarn io.ktor.**
+
+# CIO engine factory is discovered through META-INF/services.
+-keep class * implements io.ktor.client.HttpClientEngineContainer { *; }
+-keep class io.ktor.client.engine.cio.** { *; }