Use debug signing for release builds

Removed custom signing config and use debug keystore for release
builds to enable installation. Disabled minification temporarily.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/build.gradle.kts

@@ -22,27 +22,19 @@ android {
         }
     }
 
-    signingConfigs {
-        create("release") {
-            // Using debug keystore for now - replace with your own keystore
-            storeFile = file("${System.getProperty("user.home")}/.android/debug.keystore")
-            storePassword = "android"
-            keyAlias = "androiddebugkey"
-            keyPassword = "android"
-        }
-    }
-
     buildTypes {
         debug {
             signingConfig = signingConfigs.getByName("debug")
         }
         release {
-            isMinifyEnabled = true
+            // Temporarily disable minification for debugging
+            isMinifyEnabled = false
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"
             )
-            signingConfig = signingConfigs.getByName("release")
+            // Using debug signing for now - unsigned release
+            signingConfig = signingConfigs.getByName("debug")
         }
     }