fix(#102): add EmptyState views for successful empty responses across data screens (#179)

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

@@ -40,6 +40,7 @@ import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
+import com.m57.hermescontrol.ui.common.EmptyState
 import com.m57.hermescontrol.ui.common.ErrorState
 import com.m57.hermescontrol.ui.common.HermesScaffold
 import com.m57.hermescontrol.ui.common.LoadingState
@@ -84,6 +85,16 @@ fun KeysScreen(
                 )
             }
 
+            state.envVars.isEmpty() -> {
+                EmptyState(
+                    title = "No environment keys reported",
+                    subtitle = "Verify configuration or retry",
+                    onAction = { viewModel.loadKeys() },
+                    actionLabel = "Refresh",
+                    modifier = Modifier.padding(paddingValues),
+                )
+            }
+
             else -> {
                 Box(Modifier.fillMaxSize()) {
                     if (state.isLoading) {

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

@@ -39,6 +39,7 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
+import com.m57.hermescontrol.ui.common.EmptyState
 import com.m57.hermescontrol.ui.common.ErrorState
 import com.m57.hermescontrol.ui.common.HermesScaffold
 import com.m57.hermescontrol.ui.common.LoadingState
@@ -84,6 +85,16 @@ fun ModelScreen(
                 )
             }
 
+            state.providers.isEmpty() -> {
+                EmptyState(
+                    title = "No model providers reported",
+                    subtitle = "Verify configuration or retry",
+                    onAction = { viewModel.loadModelOptions() },
+                    actionLabel = "Refresh",
+                    modifier = Modifier.padding(paddingValues),
+                )
+            }
+
             else -> {
                 Box(Modifier.fillMaxSize()) {
                     if (state.isLoading && state.providers.isEmpty()) {

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

@@ -31,6 +31,7 @@ import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
+import com.m57.hermescontrol.ui.common.EmptyState
 import com.m57.hermescontrol.ui.common.ErrorState
 import com.m57.hermescontrol.ui.common.HermesScaffold
 import com.m57.hermescontrol.ui.common.LoadingState
@@ -75,6 +76,16 @@ fun PluginsScreen(
                 )
             }
 
+            state.plugins.isEmpty() -> {
+                EmptyState(
+                    title = "No plugins found",
+                    subtitle = "Verify configuration or retry",
+                    onAction = { viewModel.loadPlugins() },
+                    actionLabel = "Refresh",
+                    modifier = Modifier.padding(paddingValues),
+                )
+            }
+
             else -> {
                 Box(Modifier.fillMaxSize()) {
                     if (state.isLoading) {

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

@@ -39,6 +39,7 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
+import com.m57.hermescontrol.ui.common.EmptyState
 import com.m57.hermescontrol.ui.common.ErrorState
 import com.m57.hermescontrol.ui.common.HermesScaffold
 import com.m57.hermescontrol.ui.common.LoadingState
@@ -88,6 +89,16 @@ fun ProfilesScreen(
                 )
             }
 
+            state.profiles.isEmpty() -> {
+                EmptyState(
+                    title = "No profiles available",
+                    subtitle = "Verify configuration or retry",
+                    onAction = { viewModel.loadProfiles() },
+                    actionLabel = "Refresh",
+                    modifier = Modifier.padding(paddingValues),
+                )
+            }
+
             else -> {
                 Box(Modifier.fillMaxSize()) {
                     if (state.isLoading && state.profiles.isEmpty()) {

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

@@ -36,6 +36,7 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
+import com.m57.hermescontrol.ui.common.EmptyState
 import com.m57.hermescontrol.ui.common.ErrorState
 import com.m57.hermescontrol.ui.common.HermesScaffold
 import com.m57.hermescontrol.ui.common.LoadingState
@@ -80,6 +81,16 @@ fun ToolsetsScreen(
                 )
             }
 
+            state.toolsets.isEmpty() -> {
+                EmptyState(
+                    title = "No toolsets reported",
+                    subtitle = "Verify configuration or retry",
+                    onAction = { viewModel.loadToolsets() },
+                    actionLabel = "Refresh",
+                    modifier = Modifier.padding(paddingValues),
+                )
+            }
+
             else -> {
                 Box(Modifier.fillMaxSize()) {
                     if (state.isLoading && state.toolsets.isEmpty()) {