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>;
+}

android-app/app/src/main/java/de/harheimertc/ui/screens/memberarea/MemberAreaDetailScreens.kt

@@ -28,6 +28,7 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import android.util.Log
+import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
@@ -166,7 +167,14 @@ fun MembersScreen(
                     val m = display[index]
                     Surface(color = Color.White, shape = RoundedCornerShape(6.dp)) {
                         Row(Modifier.fillMaxWidth().padding(12.dp), horizontalArrangement = Arrangement.spacedBy(12.dp)) {
-                            Column(Modifier.weight(1f)) { Text(m.name, color = Accent900) }
+                            Column(Modifier.weight(1f)) {
+                                Text(
+                                    m.name,
+                                    color = Accent900,
+                                    fontFamily = FontFamily.SansSerif,
+                                    fontWeight = FontWeight.ExtraBold,
+                                )
+                            }
                             Column(Modifier.weight(1f)) { Text(m.email ?: "-", color = Primary600) }
                             Column(Modifier.weight(1f)) { Text(m.phone ?: "-", color = Accent700) }
                         }
@@ -259,7 +267,13 @@ private fun MemberAreaPage(
 private fun MemberCard(member: MemberDto, onEdit: (MemberDto) -> Unit = {}, onDelete: (MemberDto) -> Unit = {}) {
     Surface(color = Color.White, shape = RoundedCornerShape(14.dp), shadowElevation = 3.dp) {
         Column(Modifier.fillMaxWidth().padding(18.dp), verticalArrangement = Arrangement.spacedBy(7.dp)) {
-            Text(member.name.ifBlank { "${member.firstName} ${member.lastName}".trim() }, style = MaterialTheme.typography.titleLarge, color = Accent900)
+            Text(
+                member.name.ifBlank { "${member.firstName} ${member.lastName}".trim() },
+                style = MaterialTheme.typography.titleLarge,
+                fontFamily = FontFamily.SansSerif,
+                fontWeight = FontWeight.ExtraBold,
+                color = Accent900,
+            )
             if (!member.email.isNullOrBlank()) Text(member.email, color = Primary600)
             if (!member.phone.isNullOrBlank()) Text(member.phone, color = Accent700)
             if (!member.birthday.isNullOrBlank()) {

android-app/app/src/main/java/de/harheimertc/ui/theme/Typography.kt

@@ -15,7 +15,8 @@ val MontserratFamily = FontFamily(
     Font(R.font.montserrat_variable, FontWeight.Bold),
     Font(R.font.montserrat_variable, FontWeight.ExtraBold),
 )
-val HeaderFamily = InterFamily
+// Android headings: use system sans-serif for stronger strokes/readability on tablets.
+val HeaderFamily = FontFamily.SansSerif
 
 val AppTypography = Typography(
     displayLarge = TextStyle(