Fix: Enable APK signing in CI/CD workflow

- Generate debug keystore in GitHub Actions for alpha releases
- Configure release builds to use debug signing temporarily
- This fixes "App not installed" errors when sideloading from GitHub releases

For production releases, a proper release keystore should be configured.

Author: willbeeching

.github/workflows/release.yml

@@ -25,6 +25,14 @@ jobs:
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
 
+      - name: Generate debug keystore for signing
+        run: |
+          mkdir -p ~/.android
+          keytool -genkey -v -keystore ~/.android/debug.keystore \
+            -storepass android -alias androiddebugkey -keypass android \
+            -keyalg RSA -keysize 2048 -validity 10000 \
+            -dname "CN=Android Debug,O=Android,C=US"
+
       - name: Build Release APK
         run: ./gradlew assembleRelease
 

app/build.gradle.kts

@@ -44,6 +44,14 @@ android {
         // }
     }
 
+    // Temporary: Use debug signing for alpha releases
+    // TODO: Replace with proper release signing before production
+    applicationVariants.all {
+        if (buildType.name == "release") {
+            signingConfig = signingConfigs.getByName("debug")
+        }
+    }
+
     buildTypes {
         debug {
             applicationIdSuffix = ".debug"
@@ -58,6 +66,7 @@ android {
             isShrinkResources = true
             isDebuggable = false
             buildConfigField("boolean", "SHOW_FLIX_LOGO", "false")  // Hide Flix logo in release
+            // Signing handled by applicationVariants block below for now
             // signingConfig = signingConfigs.getByName("release")  // Uncomment when signing config is set
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),