chore: remove deprecated horses, clubs, officials, and persons services

- Deleted obsolete modules related to horses, clubs, officials, and persons services, including their configurations, build files, and database provisioning scripts.
- Cleaned up associated references in the project structure (e.g., `settings.gradle.kts`).
- Removed unused database tables and Spring beans related to these domains.

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

frontend/features/turnier-feature/src/jvmMain/kotlin/at/mocode/turnier/feature/presentation/TurnierAbrechnungTab.kt

@@ -4,10 +4,10 @@ import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.*
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Print
 import androidx.compose.material.icons.filled.Refresh
-import androidx.compose.material3.*
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -16,6 +16,7 @@ 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.models.PlaceholderContent
+import at.mocode.frontend.core.navigation.AppScreen
 
 private val PrimaryBlue = Color(0xFF1E3A8A)
 private val AccentBlue = Color(0xFF3B82F6)
@@ -50,7 +51,7 @@ fun AbrechnungTabContent() {
     // ── Hauptbereich ─────────────────────────────────────────────────────
     Column(modifier = Modifier.weight(1f).fillMaxHeight()) {
       // Sub-Tabs
-      TabRow(
+      SecondaryTabRow(
         selectedTabIndex = subTab,
         containerColor = MaterialTheme.colorScheme.surface,
         contentColor = Color(0xFF1E3A8A),
@@ -81,7 +82,7 @@ fun AbrechnungTabContent() {
 
     // ── Rechte Sidebar ───────────────────────────────────────────────────
     Column(modifier = Modifier.width(320.dp).fillMaxHeight()) {
-      TabRow(
+      SecondaryTabRow(
         selectedTabIndex = sidebarTab,
         containerColor = MaterialTheme.colorScheme.surface,
         contentColor = Color(0xFF1E3A8A),

frontend/features/veranstaltung-feature/src/jvmMain/kotlin/at/mocode/veranstaltung/feature/presentation/VeranstaltungUebersichtScreen.kt

@@ -105,7 +105,7 @@ fun VeranstaltungUebersichtScreen(
 
   Column(modifier = Modifier.fillMaxSize()) {
     // Tab-Header gemäß Figma
-    TabRow(
+    PrimaryTabRow(
       selectedTabIndex = 0,
       containerColor = MaterialTheme.colorScheme.surface,
       contentColor = Color(0xFF1E3A8A),

frontend/features/zns-import-feature/src/jvmMain/kotlin/at/mocode/zns/feature/presentation/StammdatenImportScreen.kt

@@ -109,7 +109,7 @@ fun StammdatenImportScreen(
           horizontalArrangement = Arrangement.spacedBy(8.dp),
         ) {
           Icon(Icons.Default.Error, contentDescription = null, tint = MaterialTheme.colorScheme.error)
-          Text(state.errorMessage!!, color = MaterialTheme.colorScheme.onErrorContainer)
+          Text(state.errorMessage, color = MaterialTheme.colorScheme.onErrorContainer)
         }
       }
     }

frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/desktop/v2/Screens.kt

@@ -6,6 +6,7 @@ import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
 import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.filled.ArrowBack
 import androidx.compose.material.icons.filled.Delete
 import androidx.compose.material.icons.filled.Visibility
@@ -68,7 +69,10 @@ fun VeranstalterAuswahlV2(
   DesktopThemeV2 {
     Column(Modifier.fillMaxSize().padding(16.dp), verticalArrangement = Arrangement.spacedBy(12.dp)) {
       Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.spacedBy(8.dp)) {
-        Icon(Icons.Default.ArrowBack, contentDescription = "Zurück", modifier = Modifier.clickable { onBack() })
+        Icon(
+          Icons.AutoMirrored.Filled.ArrowBack,
+          contentDescription = "Zurück",
+          modifier = Modifier.clickable { onBack() })
         Text("Veranstalter auswählen", style = MaterialTheme.typography.titleLarge)
         Spacer(Modifier.weight(1f))
         OutlinedButton(onClick = onNeu) { Text("+ Neuer Veranstalter") }
@@ -113,7 +117,10 @@ fun VeranstalterDetailV2(
   DesktopThemeV2 {
     Column(Modifier.fillMaxSize().padding(16.dp), verticalArrangement = Arrangement.spacedBy(12.dp)) {
       Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.spacedBy(8.dp)) {
-        Icon(Icons.Default.ArrowBack, contentDescription = "Zurück", modifier = Modifier.clickable { onBack() })
+        Icon(
+          Icons.AutoMirrored.Filled.ArrowBack,
+          contentDescription = "Zurück",
+          modifier = Modifier.clickable { onBack() })
         val verein = StoreV2.vereine.firstOrNull { it.id == veranstalterId }
         Text(verein?.name ?: "Veranstalter", style = MaterialTheme.typography.titleLarge)
         Spacer(Modifier.weight(1f))

frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/desktop/v2/VeranstaltungScreens.kt

@@ -5,6 +5,7 @@ import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
 import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.filled.ArrowBack
 import androidx.compose.material.icons.filled.Delete
 import androidx.compose.material3.*
@@ -24,7 +25,10 @@ fun VeranstaltungKonfigV2(
   DesktopThemeV2 {
     Column(Modifier.fillMaxSize().padding(16.dp), verticalArrangement = Arrangement.spacedBy(12.dp)) {
       Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.spacedBy(8.dp)) {
-        Icon(Icons.Default.ArrowBack, contentDescription = "Zurück", modifier = Modifier.clickable { onBack() })
+        Icon(
+          Icons.AutoMirrored.Filled.ArrowBack,
+          contentDescription = "Zurück",
+          modifier = Modifier.clickable { onBack() })
         Text("Neue Veranstaltung", style = MaterialTheme.typography.titleLarge)
       }
 
@@ -79,7 +83,10 @@ fun VeranstaltungUebersichtV2(
     val veranstaltung = StoreV2.eventsFor(veranstalterId).firstOrNull { it.id == veranstaltungId }
     Column(Modifier.fillMaxSize().padding(16.dp), verticalArrangement = Arrangement.spacedBy(12.dp)) {
       Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.spacedBy(8.dp)) {
-        Icon(Icons.Default.ArrowBack, contentDescription = "Zurück", modifier = Modifier.clickable { onBack() })
+        Icon(
+          Icons.AutoMirrored.Filled.ArrowBack,
+          contentDescription = "Zurück",
+          modifier = Modifier.clickable { onBack() })
         Text(veranstaltung?.titel ?: "Veranstaltung", style = MaterialTheme.typography.titleLarge)
         Spacer(Modifier.weight(1f))
         Button(onClick = onTurnierNeu) { Text("+ Neues Turnier") }
@@ -134,7 +141,10 @@ fun TurnierWizardV2(
     val veranstaltung = StoreV2.eventsFor(veranstalterId).firstOrNull { it.id == veranstaltungId }
     Column(Modifier.fillMaxSize().padding(16.dp), verticalArrangement = Arrangement.spacedBy(12.dp)) {
       Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.spacedBy(8.dp)) {
-        Icon(Icons.Default.ArrowBack, contentDescription = "Zurück", modifier = Modifier.clickable { onBack() })
+        Icon(
+          Icons.AutoMirrored.Filled.ArrowBack,
+          contentDescription = "Zurück",
+          modifier = Modifier.clickable { onBack() })
         Text("Neues Turnier", style = MaterialTheme.typography.titleLarge)
       }