feat: update ProGuard rules and enhance typography for member area screens

android-app/app/proguard-rules.pro

@@ -1,2 +1,21 @@
 # Project-specific R8/ProGuard rules for release builds.
-# Keep this file intentionally minimal and add rules only when needed.
+
+# Keep reflection/generic metadata used by Retrofit + Moshi.
+-keepattributes Signature,InnerClasses,EnclosingMethod
+-keepattributes RuntimeVisibleAnnotations,RuntimeVisibleParameterAnnotations,AnnotationDefault
+-keep class kotlin.Metadata { *; }
+
+# Keep Retrofit service interfaces and HTTP method annotations.
+-keep,allowobfuscation interface * {
+	@retrofit2.http.* <methods>;
+}
+
+# Keep app DTO/request/response models used via Moshi reflection.
+-keep class de.harheimertc.data.*Dto { *; }
+-keep class de.harheimertc.data.*Request { *; }
+-keep class de.harheimertc.data.*Response { *; }
+
+# Keep fields annotated with @Json names.
+-keepclassmembers class * {
+	@com.squareup.moshi.Json <fields>;
+}