feat: add LoginScreen, ScheduleScreen, and EventDetailScreen

Add 3 Compose Multiplatform screens consuming Task 6 ViewModels and
Task 8 components:
- LoginScreen: MyIce title, login button, loading/error states
- ScheduleScreen: AppBar + filter card (4 dropdowns) + event list
  with loading/error/empty/refreshing states
- EventDetailScreen: AppBar + recap card + players/staff sections
  with amber empty-state card

Use TextButton for Refresh/Logout actions (material-icons-core not
available in this Compose Multiplatform setup). Guard setAccount call
against nullable onSelect callback.

composeApp/src/commonMain/kotlin/ch/parano/myice/ui/screens/EventDetailScreen.kt

@@ -0,0 +1,166 @@
+package ch.parano.myice.ui.screens
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.Card
+import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.TopAppBar
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import ch.parano.myice.ui.components.LoadingIndicator
+import ch.parano.myice.viewmodel.EventDetailViewModel
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun EventDetailScreen(
+    gameId: String,
+    account: String,
+    eventTitle: String,
+    viewModel: EventDetailViewModel,
+    modifier: Modifier = Modifier,
+) {
+    LaunchedEffect(gameId, account) {
+        viewModel.loadEventDetail(gameId, account)
+    }
+
+    val state by viewModel.state.collectAsState()
+
+    Scaffold(
+        topBar = {
+            TopAppBar(title = { Text(eventTitle) })
+        },
+        modifier = modifier,
+    ) { padding ->
+        when {
+            state.isLoading -> {
+                LoadingIndicator(modifier = Modifier.padding(padding))
+            }
+            state.error != null -> {
+                Column(
+                    modifier = Modifier.fillMaxSize().padding(padding),
+                    horizontalAlignment = Alignment.CenterHorizontally,
+                    verticalArrangement = Arrangement.Center,
+                ) {
+                    Text(
+                        text = state.error!!,
+                        color = MaterialTheme.colorScheme.error,
+                    )
+                    Spacer(modifier = Modifier.height(8.dp))
+                    TextButton(onClick = { viewModel.loadEventDetail(gameId, account) }) {
+                        Text("Reessayer")
+                    }
+                }
+            }
+            state.eventDetail != null -> {
+                val detail = state.eventDetail!!
+                val hasPlayers = detail.convocation.available.isNotEmpty()
+                val hasStaff = detail.convocation.staff.isNotEmpty()
+
+                LazyColumn(
+                    modifier = Modifier.fillMaxSize().padding(padding),
+                    contentPadding = androidx.compose.foundation.layout.PaddingValues(16.dp),
+                    verticalArrangement = Arrangement.spacedBy(16.dp),
+                ) {
+                    item {
+                        Card(modifier = Modifier.fillMaxWidth()) {
+                            Column(
+                                modifier = Modifier.padding(16.dp),
+                                verticalArrangement = Arrangement.spacedBy(4.dp),
+                            ) {
+                                Text("Type: ${detail.type}")
+                                Text("Lieu: ${detail.place}")
+                                Text("Heure: ${detail.timeStart} - ${detail.timeEnd}")
+                            }
+                        }
+                    }
+
+                    if (!hasPlayers && !hasStaff) {
+                        item {
+                            Card(
+                                modifier = Modifier.fillMaxWidth(),
+                                colors = CardDefaults.cardColors(
+                                    containerColor = Color(0xFFFFC107),
+                                ),
+                            ) {
+                                Text(
+                                    text = "Aucun joueur ni personnel convoque",
+                                    fontWeight = FontWeight.Bold,
+                                    modifier = Modifier.padding(16.dp),
+                                )
+                            }
+                        }
+                    }
+
+                    if (hasPlayers) {
+                        item {
+                            Text(
+                                text = "Joueurs (${detail.convocation.available.size})",
+                                style = MaterialTheme.typography.titleLarge,
+                            )
+                        }
+                        items(detail.convocation.available) { player ->
+                            val position = player.position ?: "N/A"
+                            val number = player.number ?: "N/A"
+                            Card(modifier = Modifier.fillMaxWidth()) {
+                                Column(
+                                    modifier = Modifier.padding(16.dp),
+                                ) {
+                                    Text("[$position] #$number - ${player.fname} ${player.lname}")
+                                    Text(
+                                        text = "DOB: ${player.dob}",
+                                        style = MaterialTheme.typography.bodySmall,
+                                    )
+                                }
+                            }
+                        }
+                    }
+
+                    if (hasStaff) {
+                        item {
+                            Text(
+                                text = "Personnel",
+                                style = MaterialTheme.typography.titleLarge,
+                            )
+                        }
+                        items(detail.convocation.staff) { staff ->
+                            Card(modifier = Modifier.fillMaxWidth()) {
+                                Text(
+                                    text = "${staff.role}: ${staff.fname} ${staff.lname}",
+                                    modifier = Modifier.padding(16.dp),
+                                )
+                            }
+                        }
+                    }
+                }
+            }
+            else -> {
+                Column(
+                    modifier = Modifier.fillMaxSize().padding(padding),
+                    horizontalAlignment = Alignment.CenterHorizontally,
+                    verticalArrangement = Arrangement.Center,
+                ) {
+                    Text("Aucune donnee disponible")
+                }
+            }
+        }
+    }
+}

composeApp/src/commonMain/kotlin/ch/parano/myice/ui/screens/LoginScreen.kt

@@ -0,0 +1,72 @@
+package ch.parano.myice.ui.screens
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Button
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.SnackbarHostState
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import ch.parano.myice.viewmodel.AuthViewModel
+import ch.parano.myice.viewmodel.AuthState
+
+@Composable
+fun LoginScreen(
+    viewModel: AuthViewModel,
+    modifier: Modifier = Modifier,
+) {
+    val state by viewModel.state.collectAsState()
+    val snackbarHostState = remember { SnackbarHostState() }
+
+    LaunchedEffect(state) {
+        if (state is AuthState.Unauthenticated) {
+            snackbarHostState.showSnackbar("Erreur de connexion")
+        }
+    }
+
+    Scaffold(
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        modifier = modifier,
+    ) { padding ->
+        Column(
+            modifier = Modifier.fillMaxSize().padding(padding),
+            horizontalAlignment = Alignment.CenterHorizontally,
+            verticalArrangement = Arrangement.Center,
+        ) {
+            Text(
+                text = "MyIce",
+                style = MaterialTheme.typography.headlineLarge,
+                fontWeight = FontWeight.Bold,
+            )
+            Text(
+                text = "Games",
+                style = MaterialTheme.typography.titleMedium,
+            )
+            Spacer(modifier = Modifier.height(32.dp))
+            if (state is AuthState.Loading) {
+                CircularProgressIndicator()
+            } else {
+                Button(
+                    onClick = { viewModel.login() },
+                ) {
+                    Text("Se connecter avec Infomaniak")
+                }
+            }
+        }
+    }
+}

composeApp/src/commonMain/kotlin/ch/parano/myice/ui/screens/ScheduleScreen.kt

@@ -0,0 +1,200 @@
+package ch.parano.myice.ui.screens
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.Card
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.TopAppBar
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.height
+import ch.parano.myice.filter.TypeFilter
+import ch.parano.myice.ui.components.EventCard
+import ch.parano.myice.ui.components.FilterDropdown
+import ch.parano.myice.ui.components.LoadingIndicator
+import ch.parano.myice.viewmodel.AuthViewModel
+import ch.parano.myice.viewmodel.ScheduleViewModel
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun ScheduleScreen(
+    scheduleViewModel: ScheduleViewModel,
+    authViewModel: AuthViewModel,
+    onEventClick: (gameId: String, account: String, eventTitle: String) -> Unit,
+    modifier: Modifier = Modifier,
+) {
+    val scheduleState by scheduleViewModel.state.collectAsState()
+    val authState by authViewModel.state.collectAsState()
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = { Text("MyIce") },
+                actions = {
+                    val email = (authState as? ch.parano.myice.viewmodel.AuthState.Authenticated)?.email
+                    if (email != null) {
+                        Text(
+                            text = email,
+                            style = MaterialTheme.typography.bodySmall,
+                            modifier = Modifier.padding(horizontal = 8.dp),
+                        )
+                    }
+                    TextButton(onClick = { scheduleViewModel.refreshSchedule() }) {
+                        Text("Refresh")
+                    }
+                    TextButton(onClick = {
+                        scheduleViewModel.clearCache()
+                        authViewModel.logout()
+                    }) {
+                        Text("Logout")
+                    }
+                },
+            )
+        },
+        modifier = modifier,
+    ) { padding ->
+        Column(
+            modifier = Modifier.fillMaxSize().padding(padding),
+        ) {
+            Card(
+                modifier = Modifier.fillMaxWidth().padding(16.dp),
+            ) {
+                Column(
+                    modifier = Modifier.padding(16.dp),
+                    verticalArrangement = Arrangement.spacedBy(8.dp),
+                ) {
+                    FilterDropdown(
+                        label = "Compte",
+                        selectedValue = scheduleState.selectedAccount,
+                        options = scheduleState.accounts.map { it.name },
+                        onSelect = { it?.let { acc -> scheduleViewModel.setAccount(acc) } },
+                    )
+                    FilterDropdown(
+                        label = "Age",
+                        selectedValue = scheduleState.selectedAgegroup,
+                        options = scheduleState.agegroups,
+                        onSelect = { scheduleViewModel.setAgegroup(it) },
+                    )
+                    FilterDropdown(
+                        label = "Sous-groupe",
+                        selectedValue = scheduleState.selectedSubgroup,
+                        options = scheduleState.subgroups,
+                        onSelect = { scheduleViewModel.setSubgroup(it) },
+                    )
+                    FilterDropdown(
+                        label = "Type",
+                        selectedValue = typeFilterLabel(scheduleState.typeFilter),
+                        options = listOf("Tous", "Matchs", "Entrainements"),
+                        onSelect = { label ->
+                            val filter = when (label) {
+                                "Tous" -> TypeFilter.ALL
+                                "Matchs" -> TypeFilter.GAMES
+                                "Entrainements" -> TypeFilter.PRACTICES
+                                else -> TypeFilter.DEFAULT
+                            }
+                            scheduleViewModel.setTypeFilter(filter)
+                        },
+                    )
+                }
+            }
+            Box(
+                modifier = Modifier.fillMaxSize(),
+                contentAlignment = Alignment.Center,
+            ) {
+                when {
+                    scheduleState.isLoading && scheduleState.events.isEmpty() -> {
+                        LoadingIndicator()
+                    }
+                    scheduleState.error != null && scheduleState.events.isEmpty() -> {
+                        Column(
+                            horizontalAlignment = Alignment.CenterHorizontally,
+                        ) {
+                            Text(
+                                text = scheduleState.error!!,
+                                color = MaterialTheme.colorScheme.error,
+                            )
+                            Spacer(modifier = Modifier.height(8.dp))
+                            TextButton(onClick = { scheduleViewModel.refreshSchedule() }) {
+                                Text("Reessayer")
+                            }
+                        }
+                    }
+                    scheduleState.filteredEvents.isEmpty() -> {
+                        Column(
+                            horizontalAlignment = Alignment.CenterHorizontally,
+                        ) {
+                            Text("Aucun evenement disponible")
+                            if (scheduleState.events.isEmpty()) {
+                                Spacer(modifier = Modifier.height(8.dp))
+                                Text(
+                                    text = "Appuyez sur le bouton de rafraichissement pour charger les evenements",
+                                    style = MaterialTheme.typography.bodySmall,
+                                    color = Color.Gray,
+                                )
+                            }
+                        }
+                    }
+                    else -> {
+                        LazyColumn(
+                            modifier = Modifier.fillMaxSize(),
+                        ) {
+                            items(scheduleState.filteredEvents) { event ->
+                                EventCard(
+                                    event = event,
+                                    onClick = {
+                                        onEventClick(
+                                            event.idEvent,
+                                            scheduleState.selectedAccount!!,
+                                            event.title,
+                                        )
+                                    },
+                                )
+                            }
+                        }
+                    }
+                }
+                if (scheduleState.isRefreshing) {
+                    Box(
+                        modifier = Modifier.fillMaxSize(),
+                        contentAlignment = Alignment.Center,
+                    ) {
+                        Card {
+                            Column(
+                                modifier = Modifier.padding(32.dp),
+                                horizontalAlignment = Alignment.CenterHorizontally,
+                            ) {
+                                CircularProgressIndicator()
+                                Spacer(modifier = Modifier.height(16.dp))
+                                Text("Chargement...", fontWeight = FontWeight.Medium)
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+private fun typeFilterLabel(filter: TypeFilter): String = when (filter) {
+    TypeFilter.ALL -> "Tous"
+    TypeFilter.GAMES -> "Matchs"
+    TypeFilter.PRACTICES -> "Entrainements"
+}