feat(#11): make HermesScaffold title a @Composable slot, convert ChatScreen (#12)

- HermesScaffold: title now @Composable () -> Unit (M3-idiomatic)
- HermesScaffold: added modifier and snackbarHost parameters
- Updated all 18 callers from title="X" to title={Text("X")}
- ChatScreen: converted from raw Scaffold to HermesScaffold
- Removed unused Menu icon import (ktlint fix)

app/src/main/java/com/m57/hermescontrol/ui/achievements/AchievementsScreen.kt

@@ -45,7 +45,7 @@ fun AchievementsScreen(
     }
 
     HermesScaffold(
-        title = "Agent Achievements",
+        title = { Text("Agent Achievements") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadAchievements() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/channels/ChannelsScreen.kt

@@ -59,7 +59,7 @@ fun ChannelsScreen(
     }
 
     HermesScaffold(
-        title = "Messaging Channels",
+        title = { Text("Messaging Channels") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadPlatforms() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/chat/ChatScreen.kt

@@ -40,7 +40,6 @@ import androidx.compose.material.icons.automirrored.filled.Send
 import androidx.compose.material.icons.filled.Add
 import androidx.compose.material.icons.filled.ArrowDropDown
 import androidx.compose.material.icons.filled.History
-import androidx.compose.material.icons.filled.Menu
 import androidx.compose.material.icons.filled.Settings
 import androidx.compose.material.icons.filled.Stop
 import androidx.compose.material3.AlertDialog
@@ -49,7 +48,6 @@ import androidx.compose.material3.CardDefaults
 import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.DropdownMenu
 import androidx.compose.material3.DropdownMenuItem
-import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.FilledTonalButton
 import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.Icon
@@ -57,14 +55,11 @@ import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.OutlinedTextFieldDefaults
-import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Snackbar
 import androidx.compose.material3.SnackbarHost
 import androidx.compose.material3.SnackbarHostState
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
-import androidx.compose.material3.TopAppBar
-import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
@@ -88,8 +83,8 @@ import com.m57.hermescontrol.notification.NotificationHelper
 import com.m57.hermescontrol.theme.StatusGreen
 import com.m57.hermescontrol.theme.StatusRed
 import com.m57.hermescontrol.ui.common.EmptyState
+import com.m57.hermescontrol.ui.common.HermesScaffold
 
-@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun ChatScreen(
     onNavigateToSettings: () -> Unit,
@@ -165,20 +160,8 @@ fun ChatScreen(
                 ),
         )
 
-    Scaffold(
+    HermesScaffold(
-        modifier = modifier.fillMaxSize(),
+        modifier = modifier,
-        topBar = {
-            TopAppBar(
-                navigationIcon = {
-                    if (onOpenDrawer != null) {
-                        IconButton(onClick = onOpenDrawer) {
-                            Icon(
-                                imageVector = androidx.compose.material.icons.Icons.Filled.Menu,
-                                contentDescription = "Open Drawer",
-                            )
-                        }
-                    }
-                },
         title = {
             Row(verticalAlignment = Alignment.CenterVertically) {
                 Text(
@@ -199,6 +182,16 @@ fun ChatScreen(
                 )
             }
         },
+        onOpenDrawer = onOpenDrawer,
+        snackbarHost = {
+            SnackbarHost(snackbarHostState) { data ->
+                Snackbar(
+                    snackbarData = data,
+                    containerColor = MaterialTheme.colorScheme.errorContainer,
+                    contentColor = MaterialTheme.colorScheme.onErrorContainer,
+                )
+            }
+        },
         actions = {
             IconButton(onClick = { viewModel.createNewSession() }) {
                 Icon(
@@ -285,21 +278,6 @@ fun ChatScreen(
                 )
             }
         },
-                colors =
-                    TopAppBarDefaults.topAppBarColors(
-                        containerColor = MaterialTheme.colorScheme.surface,
-                    ),
-            )
-        },
-        snackbarHost = {
-            SnackbarHost(snackbarHostState) { data ->
-                Snackbar(
-                    snackbarData = data,
-                    containerColor = MaterialTheme.colorScheme.errorContainer,
-                    contentColor = MaterialTheme.colorScheme.onErrorContainer,
-                )
-            }
-        },
     ) { paddingValues ->
         Column(
             modifier =

app/src/main/java/com/m57/hermescontrol/ui/common/HermesScaffold.kt

@@ -13,7 +13,6 @@ import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
-import androidx.compose.material3.Text
 import androidx.compose.material3.TopAppBar
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
@@ -35,21 +34,24 @@ import androidx.compose.ui.input.nestedscroll.nestedScroll
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun HermesScaffold(
-    title: String,
+    modifier: Modifier = Modifier,
+    title: @Composable () -> Unit,
     onOpenDrawer: (() -> Unit)? = null,
     onRefresh: (() -> Unit)? = null,
     onBack: (() -> Unit)? = null,
     showBack: Boolean = false,
+    snackbarHost: @Composable () -> Unit = {},
     actions: @Composable () -> Unit = {},
     content: @Composable (PaddingValues) -> Unit,
 ) {
     val scrollBehavior = TopAppBarDefaults.enterAlwaysScrollBehavior()
 
     Scaffold(
-        modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
+        modifier = modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
+        snackbarHost = { snackbarHost() },
         topBar = {
             TopAppBar(
-                title = { Text(title) },
+                title = title,
                 navigationIcon = {
                     when {
                         showBack && onBack != null -> {

app/src/main/java/com/m57/hermescontrol/ui/config/ConfigScreen.kt

@@ -57,7 +57,7 @@ fun ConfigScreen(
     }
 
     HermesScaffold(
-        title = "Configuration",
+        title = { Text("Configuration") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadRawConfig() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/cron/CronJobsScreen.kt

@@ -59,7 +59,7 @@ fun CronJobsScreen(
     }
 
     HermesScaffold(
-        title = "Cron Jobs",
+        title = { Text("Cron Jobs") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadCronJobs() },
     ) {

app/src/main/java/com/m57/hermescontrol/ui/gateway/GatewayScreen.kt

@@ -62,7 +62,7 @@ fun GatewayScreen(
     }
 
     HermesScaffold(
-        title = "Gateway Control",
+        title = { Text("Gateway Control") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadStatus() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/kanban/KanbanScreen.kt

@@ -71,7 +71,7 @@ fun KanbanScreen(
     }
 
     HermesScaffold(
-        title = "Kanban Board",
+        title = { Text("Kanban Board") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadBoards() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/keys/KeysScreen.kt

@@ -66,7 +66,7 @@ fun KeysScreen(
     }
 
     HermesScaffold(
-        title = "Keys & Credentials",
+        title = { Text("Keys & Credentials") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadKeys() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/logs/LogsScreen.kt

@@ -59,7 +59,7 @@ fun LogsScreen(
     }
 
     HermesScaffold(
-        title = "Logs",
+        title = { Text("Logs") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadLogs() },
     ) {

app/src/main/java/com/m57/hermescontrol/ui/mcp/McpServersScreen.kt

@@ -59,7 +59,7 @@ fun McpServersScreen(
     }
 
     HermesScaffold(
-        title = "MCP Servers",
+        title = { Text("MCP Servers") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadServers() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/model/ModelScreen.kt

@@ -66,7 +66,7 @@ fun ModelScreen(
     }
 
     HermesScaffold(
-        title = "Models",
+        title = { Text("Models") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadModelOptions() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/pairing/PairingScreen.kt

@@ -58,7 +58,7 @@ fun PairingScreen(
     }
 
     HermesScaffold(
-        title = "Device Pairing",
+        title = { Text("Device Pairing") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadPairing() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/plugins/PluginsScreen.kt

@@ -57,7 +57,7 @@ fun PluginsScreen(
     }
 
     HermesScaffold(
-        title = "Plugins",
+        title = { Text("Plugins") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadPlugins() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/profiles/ProfilesScreen.kt

@@ -70,7 +70,7 @@ fun ProfilesScreen(
     }
 
     HermesScaffold(
-        title = "Profiles",
+        title = { Text("Profiles") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadProfiles() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/settings/SettingsScreen.kt

@@ -67,7 +67,7 @@ fun SettingsScreen(
     BackHandler(onBack = onBack)
 
     HermesScaffold(
-        title = "Settings",
+        title = { Text("Settings") },
         showBack = true,
         onBack = onBack,
     ) {

app/src/main/java/com/m57/hermescontrol/ui/skills/SkillsScreen.kt

@@ -72,7 +72,7 @@ fun SkillsScreen(
         }
 
     HermesScaffold(
-        title = "Skills",
+        title = { Text("Skills") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadSkills() },
     ) {

app/src/main/java/com/m57/hermescontrol/ui/system/SystemScreen.kt

@@ -65,7 +65,7 @@ fun SystemScreen(
     }
 
     HermesScaffold(
-        title = "System",
+        title = { Text("System") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadSystemData() },
     ) {

app/src/main/java/com/m57/hermescontrol/ui/toolsets/ToolsetsScreen.kt

@@ -62,7 +62,7 @@ fun ToolsetsScreen(
     }
 
     HermesScaffold(
-        title = "Toolsets",
+        title = { Text("Toolsets") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadToolsets() },
     ) { paddingValues ->

app/src/main/java/com/m57/hermescontrol/ui/webhooks/WebhooksScreen.kt

@@ -60,7 +60,7 @@ fun WebhooksScreen(
     }
 
     HermesScaffold(
-        title = "Webhooks",
+        title = { Text("Webhooks") },
         onOpenDrawer = onOpenDrawer,
         onRefresh = { viewModel.loadWebhooks() },
     ) { paddingValues ->