- Migrate build system to Kotlin DSL (build.gradle.kts, settings.gradle.kts)

- Upgrade `compileSdk` and `targetSdk` to 36
- Add German (`de`) localization and string resources
- Add Michachatz F-Droid repository to default list
- Update dependencies and plugins in `libs.versions.toml`
- Remove manual signing configuration from README.md
- Refactor code to use non-deprecated `alpha` property and context-based string retrieval
- Clean up `buildConfig` and locale filtering logic

src/main/kotlin/com/michatec/store/entity/Repository.kt

@@ -89,6 +89,12 @@ data class Repository(
             "Michachatz official repository. Everything in this repository is always built from the source code.",
             21, true, "3546DCBDD900F280EE2161CC163C1156BE2C2F3EB810415115039E0C7D3242C0", ""
           ),
+          if (isFdroid) null else defaultRepository(
+            "https://repo.dgplayser.duckdns.org/fdroid/archive",
+            "Michachatz F-Droid Repo",
+            "Michachatz official repository. Everything in this repository is always built from the source code.",
+            21, true, "3546DCBDD900F280EE2161CC163C1156BE2C2F3EB810415115039E0C7D3242C0 ", ""
+          ),
           defaultRepository(
             "https://f-droid.org/repo",
             "F-Droid",

src/main/kotlin/com/michatec/store/graphics/DrawableWrapper.kt

@@ -39,7 +39,7 @@ open class DrawableWrapper(val drawable: Drawable): Drawable() {
   }
 
   override fun getAlpha(): Int {
-    return DrawableCompat.getAlpha(drawable)
+    return drawable.alpha
   }
 
   override fun setAlpha(alpha: Int) {

src/main/kotlin/com/michatec/store/screen/ProductAdapter.kt

@@ -35,6 +35,7 @@ import android.widget.ProgressBar
 import android.widget.Switch
 import android.widget.TextView
 import android.widget.Toast
+import androidx.core.content.ContextCompat.getString
 import androidx.core.graphics.ColorUtils
 import androidx.core.text.HtmlCompat
 import androidx.core.text.util.LinkifyCompat
@@ -373,7 +374,6 @@ class ProductAdapter(private val callbacks: Callbacks, private val columns: Int)
     }
   }
 
-  @SuppressLint("SetTextI18n")
   private class LinkViewHolder(itemView: View): OverlappingViewHolder(itemView) {
     companion object {
       private val measurement = Measurement<Int>()
@@ -385,7 +385,7 @@ class ProductAdapter(private val callbacks: Callbacks, private val columns: Int)
 
     init {
       val margin = measurement.invalidate(itemView.resources) {
-        text.text = "measure"
+        text.text = itemView.context.getString(R.string.measure)
         link.visibility = View.GONE
         measurement.measure(itemView)
         ((itemView.measuredHeight - icon.measuredHeight) / 2f).roundToInt()
@@ -397,7 +397,6 @@ class ProductAdapter(private val callbacks: Callbacks, private val columns: Int)
     }
   }
 
-  @SuppressLint("SetTextI18n")
   private class PermissionsViewHolder(itemView: View): OverlappingViewHolder(itemView) {
     companion object {
       private val measurement = Measurement<Int>()
@@ -408,7 +407,7 @@ class ProductAdapter(private val callbacks: Callbacks, private val columns: Int)
 
     init {
       val margin = measurement.invalidate(itemView.resources) {
-        text.text = "measure"
+        text.text = itemView.context.getString(R.string.measure)
         measurement.measure(itemView)
         ((itemView.measuredHeight - icon.measuredHeight) / 2f).roundToInt()
       }

src/main/kotlin/com/michatec/store/utility/Utils.kt

@@ -75,8 +75,9 @@ object Utils {
       .filter { it.language in supportedLanguages }
       .let { it.ifEmpty { listOf(Locale.US) } }
     Locale.setDefault(compatibleLocales.first())
-    val newConfiguration = Configuration(configuration)
-      newConfiguration.setLocales(LocaleList(*compatibleLocales.toTypedArray()))
+    val newConfiguration = Configuration(configuration).apply {
+      setLocales(LocaleList(*compatibleLocales.toTypedArray()))
+    }
     return context.createConfigurationContext(newConfiguration)
   }