refactor(design-system): consolidate components and standardize naming with Ms prefix

- Removed redundant files: `AppFooter`, `AppHeader`, `AppScaffold`, `LoadingIndicator`, `MeldestelleButton`, `MeldestelleTextField`, `DashboardCard`.
- Introduced `MsFooter`, `MsHeader`, `MsScaffold`, `MsLoadingIndicator`, `MsButton`, `MsTextField`, `MsCard` with standardized implementation and naming.
- Updated references in `profile-feature` and `ping-feature` to use the new components.
- Aligned with roadmap goals for a consistent, reusable, and high-density design system.

Signed-off-by: Stefan Mogeritsch <stefan.mo.co@gmail.com>

frontend/features/ping-feature/src/commonMain/kotlin/at/mocode/ping/feature/presentation/PingScreen.kt

@@ -15,8 +15,8 @@ import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
-import at.mocode.frontend.core.designsystem.components.DashboardCard
 import at.mocode.frontend.core.designsystem.components.DenseButton
+import at.mocode.frontend.core.designsystem.components.MsCard
 import at.mocode.frontend.core.designsystem.theme.Dimens
 
 @Composable
@@ -58,7 +58,7 @@ fun PingScreen(
 
       // Right Panel: Terminal Log (40%)
       // Hier nutzen wir bewusst einen dunklen "Terminal"-Look, unabhängig vom Theme
-      DashboardCard(
+      MsCard(
         modifier = Modifier
           .weight(0.4f)
           .fillMaxHeight()
@@ -156,7 +156,7 @@ private fun StatusGrid(uiState: PingUiState) {
   Column(verticalArrangement = Arrangement.spacedBy(Dimens.SpacingS)) {
     // Row 1
     Row(modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.spacedBy(Dimens.SpacingS)) {
-      DashboardCard(modifier = Modifier.weight(1f)) {
+      MsCard(modifier = Modifier.weight(1f)) {
         StatusHeader("SIMPLE / SECURE PING")
         if (uiState.simplePingResponse != null) {
           KeyValueRow("Status", uiState.simplePingResponse.status)
@@ -167,7 +167,7 @@ private fun StatusGrid(uiState: PingUiState) {
         }
       }
 
-      DashboardCard(modifier = Modifier.weight(1f)) {
+      MsCard(modifier = Modifier.weight(1f)) {
         StatusHeader("HEALTH CHECK")
         if (uiState.healthResponse != null) {
           KeyValueRow("Status", uiState.healthResponse.status)
@@ -180,7 +180,7 @@ private fun StatusGrid(uiState: PingUiState) {
     }
 
     // Row 2
-    DashboardCard(modifier = Modifier.fillMaxWidth()) {
+    MsCard(modifier = Modifier.fillMaxWidth()) {
       StatusHeader("ENHANCED PING (RESILIENCE)")
       if (uiState.enhancedPingResponse != null) {
         Row(modifier = Modifier.fillMaxWidth()) {