refactor(preview): replace @Preview with @ComponentPreview and update dependencies

- Replaced all occurrences of `@Preview` with the standardized `@ComponentPreview` annotation for a consistent preview experience across modules.
- Added `compose.uiTooling` dependency to `core/design-system` for enhanced preview functionality.

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

frontend/features/ping-feature/src/jvmMain/kotlin/at/mocode/ping/feature/presentation/PingScreenPreview.kt

@@ -2,13 +2,9 @@ package at.mocode.ping.feature.presentation
 
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
-import androidx.compose.ui.tooling.preview.Preview
-import at.mocode.ping.api.EnhancedPingResponse
-import at.mocode.ping.api.HealthResponse
-import at.mocode.ping.api.PingApi
-import at.mocode.ping.api.PingEvent
-import at.mocode.ping.api.PingResponse
+import at.mocode.ping.api.*
 import at.mocode.ping.feature.domain.PingSyncService
+import at.mocode.wui.preview.ComponentPreview
 
 // ─────────────────────────────────────────────────────────────────────────────
 // Fake-Implementierungen für Preview (kein Koin, kein Netzwerk nötig)
@@ -53,7 +49,7 @@ private class PreviewPingViewModel(state: PingUiState) :
 // Previews
 // ─────────────────────────────────────────────────────────────────────────────
 
-@Preview
+@ComponentPreview
 @Composable
 fun PreviewPingScreen_Empty() {
   MaterialTheme {
@@ -64,7 +60,7 @@ fun PreviewPingScreen_Empty() {
   }
 }
 
-@Preview
+@ComponentPreview
 @Composable
 fun PreviewPingScreen_WithData() {
   MaterialTheme {
@@ -84,7 +80,7 @@ fun PreviewPingScreen_WithData() {
   }
 }
 
-@Preview
+@ComponentPreview
 @Composable
 fun PreviewPingScreen_Loading() {
   MaterialTheme {
@@ -95,7 +91,7 @@ fun PreviewPingScreen_Loading() {
   }
 }
 
-@Preview
+@ComponentPreview
 @Composable
 fun PreviewPingScreen_Error() {
   MaterialTheme {