feat(pferde-feature): introduce Pferde management module with screens, ViewModel, and domain models

- Added `pferde-feature` module for managing horses, including list, detail, and editing views.
- Implemented `MsMasterDetailLayout` for PferdeScreen, integrating `MsDataTable`, `MsFilterBar`, and `MsActionToolbar`.
- Defined domain models (`Pferd`, `Geschlecht`, `PferdeStatus`) with mock data support.
- Updated roadmap to mark `Pferde-Verwaltung (MVP)` as complete.
- Registered the new module in `settings.gradle.kts` and `meldestelle-desktop` build configuration.
- Added previews for Pferde and Reiter components to support IDE render.

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

frontend/shells/meldestelle-desktop/build.gradle.kts

@@ -35,6 +35,8 @@ kotlin {
       implementation(projects.frontend.features.veranstaltungFeature)
       implementation(projects.frontend.features.turnierFeature)
       implementation(project(":frontend:features:profile-feature"))
+      implementation(project(":frontend:features:reiter-feature"))
+      implementation(project(":frontend:features:pferde-feature"))
       implementation(project(":frontend:features:billing-feature"))
 
       // Compose Desktop

frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/desktop/PreviewMain.kt

@@ -5,12 +5,8 @@ import androidx.compose.material3.Surface
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.window.singleWindowApplication
-import at.mocode.turnier.feature.presentation.TurnierDetailScreen
-import at.mocode.veranstalter.feature.presentation.VeranstalterAuswahlScreen
-import at.mocode.veranstalter.feature.presentation.VeranstalterDetailScreen
-import at.mocode.veranstalter.feature.presentation.VeranstalterNeuScreen
-import at.mocode.veranstaltung.feature.presentation.AdminUebersichtScreen
-import at.mocode.veranstaltung.feature.presentation.VeranstaltungUebersichtScreen
+import at.mocode.frontend.features.pferde.presentation.PferdeScreen
+import at.mocode.frontend.features.pferde.presentation.PferdeViewModel
 
 /**
  * Hot-Reload Preview Entry Point
@@ -31,6 +27,13 @@ fun main() = singleWindowApplication(title = "🔥 Hot-Reload Preview") {
 private fun PreviewContent() {
   MaterialTheme {
     Surface {
+
+      // --- REITER ---
+      // ReiterScreen(viewModel = ReiterViewModel())
+
+      // --- PFERDE ---
+      PferdeScreen(viewModel = PferdeViewModel())
+
       // ── Hier den gewünschten Screen eintragen ──────────────────────
       // VeranstalterAuswahlScreen(onVeranstalterSelected = {}, onNeuerVeranstalter = {})
       // VeranstalterNeuScreen(onBack = {}, onSave = {})
@@ -40,11 +43,11 @@ private fun PreviewContent() {
       // ──────────────────────────────────────────────────────────────
 
       // Standard: AdminUebersichtScreen (Startseite nach Login)
-      AdminUebersichtScreen(
-        onVeranstalterAuswahl = {},
-        onVeranstaltungOeffnen = {},
-        onPingService = {}
-      )
+//      AdminUebersichtScreen(
+//        onVeranstalterAuswahl = {},
+//        onVeranstaltungOeffnen = {},
+//        onPingService = {}
+//      )
     }
   }
 }