android/app/src/main/kotlin/com/flagship/abox/manager/ui/scene/SceneEditorScreen.kt

@@ -58,7 +58,6 @@ import androidx.compose.runtime.mutableDoubleStateOf
 import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -895,19 +894,21 @@ private fun AddActionDialog(
     var notifyTitle by remember { mutableStateOf("情景完成") }
     var notifyMsg by remember { mutableStateOf("自动化任务执行完成") }
 
-    val coroutineScope = rememberCoroutineScope()
-
     LaunchedEffect(availableRemotes, selectedRemoteIndex) {
         if (availableRemotes.isNotEmpty() && selectedRemoteIndex in availableRemotes.indices) {
             val remote = availableRemotes[selectedRemoteIndex]
-            coroutineScope.launch {
+            keyBindings = emptyList()
             val bindings = viewModel.getKeyBindings(remote.id)
             keyBindings = bindings
             if (bindings.isNotEmpty()) {
                 selectedButtonId = bindings[0].buttonId
                 selectedButtonName = bindings[0].displayName.ifBlank { bindings[0].buttonId }
+            } else {
+                selectedButtonId = "power"
+                selectedButtonName = "电源"
             }
-            }
+        } else {
+            keyBindings = emptyList()
         }
     }
 

android/app/src/main/kotlin/com/flagship/abox/manager/ui/scene/SceneEditorViewModel.kt

@@ -54,7 +54,7 @@ data class SceneEditorState(
     val isSaved: Boolean = false,
     val errorMessage: String? = null,
 ) {
-    val isValid: Boolean get() = name.isNotBlank() && actions.isNotEmpty()
+    val isValid: Boolean get() = name.isNotBlank() && actions.isNotEmpty() && (type != AutomationType.AUTOMATIC || triggers.isNotEmpty())
     val isEditing: Boolean get() = sceneId != null
 }
 
@@ -68,6 +68,9 @@ class SceneEditorViewModel @Inject constructor(
     private val _state = MutableStateFlow(SceneEditorState())
     val state: StateFlow<SceneEditorState> = _state.asStateFlow()
 
+    private var initializedSceneId: SceneId? = null
+    private var isInitialized: Boolean = false
+
     init {
         observeAvailableRemotes()
     }
@@ -87,6 +90,10 @@ class SceneEditorViewModel @Inject constructor(
     }
 
     fun initialize(sceneId: SceneId?, initialType: AutomationType? = null) {
+        if (isInitialized && initializedSceneId == sceneId) return
+        isInitialized = true
+        initializedSceneId = sceneId
+
         if (sceneId == null) {
             _state.update {
                 SceneEditorState(

android/app/src/main/kotlin/com/flagship/abox/manager/ui/scene/SceneExecutionViewModel.kt

@@ -34,7 +34,13 @@ class SceneExecutionViewModel @Inject constructor(
     private val _uiState = MutableStateFlow<SceneExecutionUiState>(SceneExecutionUiState.Loading)
     val uiState: StateFlow<SceneExecutionUiState> = _uiState.asStateFlow()
 
+    private var initializedSceneId: SceneId? = null
+
     fun initialize(sceneId: SceneId) {
+        if (initializedSceneId == sceneId && _uiState.value !is SceneExecutionUiState.Loading) {
+            return
+        }
+        initializedSceneId = sceneId
         _uiState.value = SceneExecutionUiState.Loading
         viewModelScope.launch {
             val profile = profileStore.activeProfile()
@@ -53,11 +59,18 @@ class SceneExecutionViewModel @Inject constructor(
 
     fun execute() {
         val current = _uiState.value
-        val scene = (current as? SceneExecutionUiState.Ready)?.scene
-            ?: (current as? SceneExecutionUiState.Running)?.scene
-            ?: return
+        val scene = when (current) {
+            is SceneExecutionUiState.Ready -> current.scene
+            is SceneExecutionUiState.Completed -> current.result.scene
+            else -> return
+        }
         _uiState.value = SceneExecutionUiState.Running(scene)
         viewModelScope.launch {
+            val profile = profileStore.activeProfile()
+            if (profile == null || profile.id != scene.profileId) {
+                _uiState.value = SceneExecutionUiState.Failed("Active profile mismatch")
+                return@launch
+            }
             when (val result = sceneExecutor.execute(scene)) {
                 is DomainResult.Success -> _uiState.value = SceneExecutionUiState.Completed(result.value)
                 is DomainResult.Failure -> _uiState.value = SceneExecutionUiState.Failed(

android/app/src/test/kotlin/com/flagship/abox/manager/ui/scene/SceneEditorViewModelTest.kt

@@ -158,5 +158,39 @@ class SceneEditorViewModelTest {
         assertTrue(viewModel.state.value.isSaved)
         assertFalse(viewModel.state.value.isSaving)
     }
+
+    @Test
+    fun automaticSceneWithoutTriggersIsInvalid() = runTest {
+        setupProfile()
+        val viewModel = SceneEditorViewModel(sceneRepository, virtualRemoteRepository, profileStore)
+        viewModel.initialize(null, AutomationType.AUTOMATIC)
+        viewModel.updateName("Auto Without Trigger")
+        viewModel.addSocketAction("socket-1", SocketPowerState.ON)
+        advanceUntilIdle()
+
+        // Missing triggers -> invalid
+        assertFalse(viewModel.state.value.isValid)
+
+        // Adding trigger makes it valid
+        viewModel.addTemperatureTrigger("sensor-1", ComparisonOperator.GREATER_THAN, 28.0)
+        advanceUntilIdle()
+        assertTrue(viewModel.state.value.isValid)
+    }
+
+    @Test
+    fun initializeIsIdempotentAndPreservesDraftState() = runTest {
+        setupProfile()
+        val viewModel = SceneEditorViewModel(sceneRepository, virtualRemoteRepository, profileStore)
+        viewModel.initialize(existingScene.id)
+        advanceUntilIdle()
+
+        viewModel.updateName("Modified Unsaved Name")
+        assertEquals("Modified Unsaved Name", viewModel.state.value.name)
+
+        // Re-invoking initialize with same sceneId should NOT overwrite draft
+        viewModel.initialize(existingScene.id)
+        advanceUntilIdle()
+        assertEquals("Modified Unsaved Name", viewModel.state.value.name)
+    }
 }
 

android/app/src/test/kotlin/com/flagship/abox/manager/ui/scene/SceneExecutionViewModelTest.kt

@@ -87,4 +87,39 @@ class SceneExecutionViewModelTest {
         assertEquals(testScene.id, completed.result.scene.id)
         assertEquals(1, completed.result.results.size)
     }
+
+    @Test
+    fun initializeIsIdempotentAndPreservesCompletedState() = runTest {
+        setupProfile()
+        val viewModel = SceneExecutionViewModel(sceneRepository, sceneExecutor, profileStore)
+        viewModel.initialize(testScene.id)
+        advanceUntilIdle()
+
+        viewModel.execute()
+        advanceUntilIdle()
+        assertTrue(viewModel.uiState.value is SceneExecutionUiState.Completed)
+
+        // Re-initializing with same sceneId should preserve Completed state
+        viewModel.initialize(testScene.id)
+        advanceUntilIdle()
+        assertTrue(viewModel.uiState.value is SceneExecutionUiState.Completed)
+    }
+
+    @Test
+    fun executeFailsWhenActiveProfileMismatches() = runTest {
+        setupProfile()
+        val viewModel = SceneExecutionViewModel(sceneRepository, sceneExecutor, profileStore)
+        viewModel.initialize(testScene.id)
+        advanceUntilIdle()
+
+        // Switch to a different profile
+        profileStore.setActiveProfile(ProviderProfileId("different-profile"))
+
+        viewModel.execute()
+        advanceUntilIdle()
+
+        assertTrue(viewModel.uiState.value is SceneExecutionUiState.Failed)
+        val failed = viewModel.uiState.value as SceneExecutionUiState.Failed
+        assertEquals("Active profile mismatch", failed.message)
+    }
 }

domain/src/main/kotlin/com/flagship/abox/manager/domain/DefaultSceneExecutor.kt

@@ -2,8 +2,12 @@ package com.flagship.abox.manager.domain
 
 import com.flagship.abox.manager.domain.infrared.SendVirtualRemoteAction
 import com.flagship.abox.manager.domain.infrared.VirtualRemoteId
-import kotlinx.coroutines.delay
 import java.util.concurrent.ConcurrentHashMap
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
+import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.delay
 
 /**
  * Production implementation of [SceneExecutor].
@@ -29,13 +33,25 @@ class DefaultSceneExecutor(
             )
         }
         val startTime = System.currentTimeMillis()
-        val results = mutableListOf<SceneActionExecutionResult>()
-        var aborted = false
 
         return try {
+            val results: List<SceneActionExecutionResult> = if (scene.concurrencyMode == ConcurrencyMode.PARALLEL) {
+                coroutineScope {
+                    scene.actions.map { action ->
+                        async {
+                            val actionStart = System.currentTimeMillis()
+                            val execResult = executeAction(scene.profileId, action)
+                            val duration = System.currentTimeMillis() - actionStart
+                            execResult.copy(executionDurationMillis = duration)
+                        }
+                    }.awaitAll()
+                }
+            } else {
+                val sequentialResults = mutableListOf<SceneActionExecutionResult>()
+                var aborted = false
                 for (action in scene.actions) {
                     if (aborted) {
-                    results.add(
+                        sequentialResults.add(
                             SceneActionExecutionResult(
                                 action = action,
                                 outcome = SceneActionOutcome.SKIPPED,
@@ -49,12 +65,15 @@ class DefaultSceneExecutor(
                     val execResult = executeAction(scene.profileId, action)
                     val duration = System.currentTimeMillis() - actionStart
                     val enrichedResult = execResult.copy(executionDurationMillis = duration)
-                results.add(enrichedResult)
+                    sequentialResults.add(enrichedResult)
 
                     if (enrichedResult.outcome == SceneActionOutcome.FAILURE && scene.strategy == ExecutionStrategy.ABORT_ON_ERROR) {
                         aborted = true
                     }
                 }
+                sequentialResults
+            }
+
             val totalDuration = System.currentTimeMillis() - startTime
             DomainResult.Success(
                 SceneExecutionResult(
@@ -63,6 +82,8 @@ class DefaultSceneExecutor(
                     totalDurationMillis = totalDuration,
                 ),
             )
+        } catch (e: CancellationException) {
+            throw e
         } finally {
             runningScenes.remove(scene.id)
         }
@@ -72,7 +93,8 @@ class DefaultSceneExecutor(
         profileId: ProviderProfileId,
         action: SceneAction,
     ): SceneActionExecutionResult {
-        return when (action) {
+        return try {
+            when (action) {
                 is SceneAction.SocketPower -> {
                     val res = socketGateway.setPower(
                         profileId = profileId,
@@ -102,27 +124,21 @@ class DefaultSceneExecutor(
                     } else {
                         SceneActionExecutionResult(
                             action = action,
-                        outcome = SceneActionOutcome.SUCCESS,
-                        error = null,
+                            outcome = SceneActionOutcome.FAILURE,
+                            error = DomainError.OperationFailed(
+                                detail = "Virtual remote action executor is not available",
+                            ),
                         )
                     }
                 }
 
                 is SceneAction.Delay -> {
-                try {
                     delayDurationProvider(action.durationSeconds * 1000L)
                     SceneActionExecutionResult(
                         action = action,
                         outcome = SceneActionOutcome.SUCCESS,
                         error = null,
                     )
-                } catch (e: Exception) {
-                    SceneActionExecutionResult(
-                        action = action,
-                        outcome = SceneActionOutcome.FAILURE,
-                        error = DomainError.OperationFailed(detail = e.message),
-                    )
-                }
                 }
 
                 is SceneAction.Notification -> {
@@ -133,6 +149,15 @@ class DefaultSceneExecutor(
                     )
                 }
             }
+        } catch (e: CancellationException) {
+            throw e
+        } catch (e: Exception) {
+            SceneActionExecutionResult(
+                action = action,
+                outcome = SceneActionOutcome.FAILURE,
+                error = DomainError.OperationFailed(detail = e.message),
+            )
+        }
     }
 
     private fun toExecutionResult(action: SceneAction, res: DomainResult<*>): SceneActionExecutionResult {

domain/src/main/kotlin/com/flagship/abox/manager/domain/InMemorySceneRepository.kt

@@ -3,6 +3,8 @@ package com.flagship.abox.manager.domain
 import java.util.concurrent.ConcurrentHashMap
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 
 /**
  * Provider-isolated in-memory [SceneRepository] implementation that supports
@@ -10,6 +12,10 @@ import kotlinx.coroutines.flow.MutableStateFlow
  */
 class InMemorySceneRepository : SceneRepository {
     private val flows = ConcurrentHashMap<ProviderProfileId, MutableStateFlow<DomainResult<List<Scene>>>>()
+    private val mutexes = ConcurrentHashMap<ProviderProfileId, Mutex>()
+
+    private fun mutexFor(profileId: ProviderProfileId): Mutex =
+        mutexes.getOrPut(profileId) { Mutex() }
 
     override fun observeScenes(profileId: ProviderProfileId): Flow<DomainResult<List<Scene>>> =
         flowFor(profileId)
@@ -25,10 +31,13 @@ class InMemorySceneRepository : SceneRepository {
     override suspend fun createScene(
         profileId: ProviderProfileId,
         scene: Scene,
-    ): DomainResult<Scene> {
+    ): DomainResult<Scene> = mutexFor(profileId).withLock {
         require(scene.profileId == profileId) {
             "Scene profileId must match the supplied profileId"
         }
+        require(scene.actions.all { it.profileId == profileId }) {
+            "All scene actions must belong to the supplied profileId"
+        }
         val scenes = currentScenes(profileId).orEmpty()
         if (scenes.any { it.id == scene.id }) {
             return DomainResult.Failure(
@@ -39,39 +48,45 @@ class InMemorySceneRepository : SceneRepository {
         }
         val updated = scenes + scene
         publish(profileId, updated)
-        return DomainResult.Success(scene)
+        DomainResult.Success(scene)
     }
 
     override suspend fun updateScene(
         profileId: ProviderProfileId,
         scene: Scene,
-    ): DomainResult<Scene> {
+    ): DomainResult<Scene> = mutexFor(profileId).withLock {
         require(scene.profileId == profileId) {
             "Scene profileId must match the supplied profileId"
         }
+        require(scene.actions.all { it.profileId == profileId }) {
+            "All scene actions must belong to the supplied profileId"
+        }
         val scenes = currentScenes(profileId).orEmpty()
         val index = scenes.indexOfFirst { it.id == scene.id }
         if (index < 0) return notFound(scene.id)
         val updated = scenes.toMutableList().apply { set(index, scene) }
         publish(profileId, updated)
-        return DomainResult.Success(scene)
+        DomainResult.Success(scene)
     }
 
     override suspend fun deleteScene(
         profileId: ProviderProfileId,
         sceneId: SceneId,
-    ): DomainResult<Unit> {
+    ): DomainResult<Unit> = mutexFor(profileId).withLock {
         val scenes = currentScenes(profileId).orEmpty()
         val updated = scenes.filterNot { it.id == sceneId }
         if (updated.size == scenes.size) return notFound(sceneId)
         publish(profileId, updated)
-        return DomainResult.Success(Unit)
+        DomainResult.Success(Unit)
     }
 
     fun seedDefaults(profileId: ProviderProfileId, scenes: List<Scene>) {
         require(scenes.all { it.profileId == profileId }) {
             "All scenes must belong to the supplied profileId"
         }
+        require(scenes.all { s -> s.actions.all { it.profileId == profileId } }) {
+            "All scene actions must belong to the supplied profileId"
+        }
         publish(profileId, scenes)
     }
 

domain/src/test/kotlin/com/flagship/abox/manager/domain/DefaultSceneExecutorTest.kt

@@ -221,5 +221,92 @@ class DefaultSceneExecutorTest {
         assertEquals(SceneActionOutcome.SUCCESS, executionResult.results[0].outcome)
         assertEquals(5000L, delayCalled)
     }
+
+    @Test
+    fun executesActionsConcurrentlyWhenParallelMode() = runTest {
+        val socketGateway = TestSocketGateway()
+        val infraredGateway = TestInfraredGateway()
+        val executor = DefaultSceneExecutor(socketGateway, infraredGateway)
+
+        val action1 = SceneAction.SocketPower(
+            id = SceneActionId("a1"),
+            profileId = profileId,
+            deviceName = DeviceName("socket-1"),
+            powerState = SocketPowerState.ON,
+        )
+        val action2 = SceneAction.InfraredKey(
+            id = SceneActionId("a2"),
+            profileId = profileId,
+            deviceName = DeviceName("ir-1"),
+            key = "power",
+        )
+        val scene = Scene(
+            id = SceneId("s1"),
+            profileId = profileId,
+            name = "Parallel Scene",
+            concurrencyMode = ConcurrencyMode.PARALLEL,
+            actions = listOf(action1, action2),
+        )
+
+        val result = executor.execute(scene)
+        assertTrue(result is DomainResult.Success)
+        val executionResult = (result as DomainResult.Success).value
+        assertEquals(2, executionResult.results.size)
+        assertEquals(SceneActionOutcome.SUCCESS, executionResult.results[0].outcome)
+        assertEquals(SceneActionOutcome.SUCCESS, executionResult.results[1].outcome)
+        assertEquals(1, socketGateway.calls.size)
+        assertEquals(1, infraredGateway.calls.size)
+    }
+
+    @Test
+    fun failsVirtualRemoteButtonActionWhenSenderNotConfigured() = runTest {
+        val executor = DefaultSceneExecutor(
+            socketGateway = TestSocketGateway(),
+            infraredGateway = TestInfraredGateway(),
+            sendVirtualRemoteAction = null,
+        )
+        val action = SceneAction.VirtualRemoteButton(
+            id = SceneActionId("vr1"),
+            profileId = profileId,
+            remoteId = "tv-remote",
+            remoteDisplayName = "TV",
+            buttonId = "power",
+            buttonDisplayName = "Power",
+        )
+        val scene = Scene(
+            id = SceneId("s-vr"),
+            profileId = profileId,
+            name = "VR Scene",
+            actions = listOf(action),
+        )
+
+        val result = executor.execute(scene)
+        assertTrue(result is DomainResult.Success)
+        val executionResult = (result as DomainResult.Success).value
+        assertEquals(1, executionResult.results.size)
+        assertEquals(SceneActionOutcome.FAILURE, executionResult.results[0].outcome)
+        assertTrue(executionResult.results[0].error is DomainError.OperationFailed)
+    }
+
+    @Test(expected = kotlinx.coroutines.CancellationException::class)
+    fun rethrowsCancellationExceptionWhenDelayCancelled() = runTest {
+        val executor = DefaultSceneExecutor(
+            socketGateway = TestSocketGateway(),
+            infraredGateway = TestInfraredGateway(),
+            delayDurationProvider = { throw kotlinx.coroutines.CancellationException("Job cancelled") },
+        )
+        val action = SceneAction.Delay(
+            id = SceneActionId("d1"),
+            profileId = profileId,
+            durationSeconds = 10,
+        )
+        val scene = Scene(
+            id = SceneId("s-cancelled"),
+            profileId = profileId,
+            name = "Cancelled Scene",
+            actions = listOf(action),
+        )
+        executor.execute(scene)
+    }
 }
 

domain/src/test/kotlin/com/flagship/abox/manager/domain/InMemorySceneRepositoryTest.kt

@@ -1,6 +1,9 @@
 package com.flagship.abox.manager.domain
 
 import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
+import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.test.runTest
 import org.junit.Assert.assertEquals
@@ -83,4 +86,43 @@ class InMemorySceneRepositoryTest {
         val getAfterDelete = repository.getScene(aboxProfile, sceneId)
         assertNull((getAfterDelete as DomainResult.Success).value)
     }
+
+    @Test(expected = IllegalArgumentException::class)
+    fun rejectsSceneWithMismatchedActionProfileId() = runTest {
+        val repository = InMemorySceneRepository()
+        val crossAction = SceneAction.SocketPower(
+            id = SceneActionId("a-cross"),
+            profileId = ProviderProfileId("other-profile"),
+            deviceName = DeviceName("socket-1"),
+            powerState = SocketPowerState.ON,
+        )
+        val scene = Scene(
+            id = SceneId("abox:admin:scene-invalid"),
+            profileId = aboxProfile,
+            name = "Invalid Scene",
+            actions = listOf(crossAction),
+        )
+        repository.createScene(aboxProfile, scene)
+    }
+
+    @Test
+    fun concurrentCreationsAreThreadSafe() = runTest {
+        val repository = InMemorySceneRepository()
+        val count = 20
+        coroutineScope {
+            (1..count).map { idx ->
+                async {
+                    val scene = Scene(
+                        id = SceneId("abox:admin:scene-$idx"),
+                        profileId = aboxProfile,
+                        name = "Scene $idx",
+                        actions = emptyList(),
+                    )
+                    repository.createScene(aboxProfile, scene)
+                }
+            }.awaitAll()
+        }
+        val scenes = (repository.observeScenes(aboxProfile).first() as DomainResult.Success).value
+        assertEquals(count, scenes.size)
+    }
 }

testing/fakes/src/main/kotlin/com/flagship/abox/manager/testing/fakes/FakeSceneRepository.kt

@@ -1,8 +1,10 @@
 package com.flagship.abox.manager.testing.fakes
 
+import com.flagship.abox.manager.domain.ConcurrencyMode
 import com.flagship.abox.manager.domain.DeviceName
 import com.flagship.abox.manager.domain.DomainError
 import com.flagship.abox.manager.domain.DomainResult
+import com.flagship.abox.manager.domain.ExecutionStrategy
 import com.flagship.abox.manager.domain.InfraredGateway
 import com.flagship.abox.manager.domain.ProviderProfileId
 import com.flagship.abox.manager.domain.Scene
@@ -18,9 +20,15 @@ import com.flagship.abox.manager.domain.SceneId
 import com.flagship.abox.manager.domain.SceneRepository
 import com.flagship.abox.manager.domain.SocketGateway
 import com.flagship.abox.manager.domain.SocketPowerState
+import java.util.concurrent.ConcurrentHashMap
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
+import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
-import java.util.concurrent.ConcurrentHashMap
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 
 /**
  * In-memory [SceneRepository] used by the scene UI and ViewModel tests. Scenes are isolated by
@@ -35,6 +43,10 @@ class FakeSceneRepository : SceneRepository {
         ProviderProfileId,
         MutableStateFlow<DomainResult<List<Scene>>>,
     >()
+    private val mutexes = ConcurrentHashMap<ProviderProfileId, Mutex>()
+
+    private fun mutexFor(profileId: ProviderProfileId): Mutex =
+        mutexes.getOrPut(profileId) { Mutex() }
 
     override fun observeScenes(
         profileId: ProviderProfileId,
@@ -51,10 +63,13 @@ class FakeSceneRepository : SceneRepository {
     override suspend fun createScene(
         profileId: ProviderProfileId,
         scene: Scene,
-    ): DomainResult<Scene> {
+    ): DomainResult<Scene> = mutexFor(profileId).withLock {
         require(scene.profileId == profileId) {
             "Scene profileId must match the supplied profileId"
         }
+        require(scene.actions.all { it.profileId == profileId }) {
+            "All scene actions must belong to the supplied provider profile"
+        }
         val scenes = currentScenes(profileId).orEmpty()
         if (scenes.any { it.id == scene.id }) {
             return DomainResult.Failure(
@@ -65,33 +80,36 @@ class FakeSceneRepository : SceneRepository {
         }
         val updated = scenes + scene
         publish(profileId, updated)
-        return DomainResult.Success(scene)
+        DomainResult.Success(scene)
     }
 
     override suspend fun updateScene(
         profileId: ProviderProfileId,
         scene: Scene,
-    ): DomainResult<Scene> {
+    ): DomainResult<Scene> = mutexFor(profileId).withLock {
         require(scene.profileId == profileId) {
             "Scene profileId must match the supplied profileId"
         }
+        require(scene.actions.all { it.profileId == profileId }) {
+            "All scene actions must belong to the supplied provider profile"
+        }
         val scenes = currentScenes(profileId).orEmpty()
         val index = scenes.indexOfFirst { it.id == scene.id }
         if (index < 0) return notFound(scene.id)
         val updated = scenes.toMutableList().apply { set(index, scene) }
         publish(profileId, updated)
-        return DomainResult.Success(scene)
+        DomainResult.Success(scene)
     }
 
     override suspend fun deleteScene(
         profileId: ProviderProfileId,
         sceneId: SceneId,
-    ): DomainResult<Unit> {
+    ): DomainResult<Unit> = mutexFor(profileId).withLock {
         val scenes = currentScenes(profileId).orEmpty()
         val updated = scenes.filterNot { it.id == sceneId }
         if (updated.size == scenes.size) return notFound(sceneId)
         publish(profileId, updated)
-        return DomainResult.Success(Unit)
+        DomainResult.Success(Unit)
     }
 
     /**
@@ -102,6 +120,9 @@ class FakeSceneRepository : SceneRepository {
         require(scenes.all { it.profileId == profileId }) {
             "All scenes must belong to the supplied provider profile"
         }
+        require(scenes.all { s -> s.actions.all { it.profileId == profileId } }) {
+            "All scene actions must belong to the supplied provider profile"
+        }
         publish(profileId, scenes)
         return this
     }
@@ -198,13 +219,43 @@ class FakeSceneExecutor(
             )
         }
         val startTime = System.currentTimeMillis()
-        val results = mutableListOf<SceneActionExecutionResult>()
+
         return try {
-            for (action in scene.actions) {
+            val results: List<SceneActionExecutionResult> = if (scene.concurrencyMode == ConcurrencyMode.PARALLEL) {
+                coroutineScope {
+                    scene.actions.map { action ->
+                        async {
                             val actionStart = System.currentTimeMillis()
                             val execResult = executeAction(scene.profileId, action)
                             val duration = System.currentTimeMillis() - actionStart
-                results.add(execResult.copy(executionDurationMillis = duration))
+                            execResult.copy(executionDurationMillis = duration)
+                        }
+                    }.awaitAll()
+                }
+            } else {
+                val sequentialResults = mutableListOf<SceneActionExecutionResult>()
+                var aborted = false
+                for (action in scene.actions) {
+                    if (aborted) {
+                        sequentialResults.add(
+                            SceneActionExecutionResult(
+                                action = action,
+                                outcome = SceneActionOutcome.SKIPPED,
+                                error = null,
+                            ),
+                        )
+                        continue
+                    }
+                    val actionStart = System.currentTimeMillis()
+                    val execResult = executeAction(scene.profileId, action)
+                    val duration = System.currentTimeMillis() - actionStart
+                    val enrichedResult = execResult.copy(executionDurationMillis = duration)
+                    sequentialResults.add(enrichedResult)
+                    if (enrichedResult.outcome == SceneActionOutcome.FAILURE && scene.strategy == ExecutionStrategy.ABORT_ON_ERROR) {
+                        aborted = true
+                    }
+                }
+                sequentialResults
             }
             val totalDuration = System.currentTimeMillis() - startTime
             DomainResult.Success(
@@ -214,6 +265,8 @@ class FakeSceneExecutor(
                     totalDurationMillis = totalDuration,
                 ),
             )
+        } catch (e: CancellationException) {
+            throw e
         } finally {
             running.remove(scene.id)
         }
@@ -223,6 +276,7 @@ class FakeSceneExecutor(
         profileId: ProviderProfileId,
         action: SceneAction,
     ): SceneActionExecutionResult {
+        return try {
             val result = when (action) {
                 is SceneAction.SocketPower -> socketGateway.setPower(
                     profileId = profileId,
@@ -240,7 +294,7 @@ class FakeSceneExecutor(
                 is SceneAction.Delay,
                 is SceneAction.Notification -> DomainResult.Success(Unit)
             }
-        return when (result) {
+            when (result) {
                 is DomainResult.Success -> SceneActionExecutionResult(
                     action = action,
                     outcome = SceneActionOutcome.SUCCESS,
@@ -253,5 +307,14 @@ class FakeSceneExecutor(
                     error = result.error,
                 )
             }
+        } catch (e: CancellationException) {
+            throw e
+        } catch (e: Exception) {
+            SceneActionExecutionResult(
+                action = action,
+                outcome = SceneActionOutcome.FAILURE,
+                error = DomainError.OperationFailed(detail = e.message),
+            )
+        }
     }
 }

testing/fakes/src/test/kotlin/com/flagship/abox/manager/testing/fakes/FakeSceneRepositoryTest.kt

@@ -11,6 +11,9 @@ import com.flagship.abox.manager.domain.SceneColor
 import com.flagship.abox.manager.domain.SceneIcon
 import com.flagship.abox.manager.domain.SceneId
 import com.flagship.abox.manager.domain.SocketPowerState
+import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
+import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.test.runTest
 import org.junit.Assert.assertEquals
@@ -122,6 +125,45 @@ class FakeSceneRepositoryTest {
         assertNotNull((value as DomainResult.Failure).error)
     }
 
+    @Test(expected = IllegalArgumentException::class)
+    fun createSceneRejectsMismatchedActionProfileId() = runTest {
+        val repo = FakeSceneRepository()
+        val crossAction = SceneAction.SocketPower(
+            id = SceneActionId("a-cross"),
+            profileId = ProviderProfileId("other"),
+            deviceName = DeviceName("socket-1"),
+            powerState = SocketPowerState.ON,
+        )
+        val scene = Scene(
+            id = SceneId("${localProfile.value}:scene-cross"),
+            profileId = localProfile,
+            name = "Cross Action",
+            actions = listOf(crossAction),
+        )
+        repo.createScene(localProfile, scene)
+    }
+
+    @Test
+    fun concurrentCreationsAreThreadSafe() = runTest {
+        val repo = FakeSceneRepository()
+        val count = 20
+        coroutineScope {
+            (1..count).map { idx ->
+                async {
+                    val scene = Scene(
+                        id = SceneId("${aboxProfile.value}:scene-$idx"),
+                        profileId = aboxProfile,
+                        name = "Scene $idx",
+                        actions = emptyList(),
+                    )
+                    repo.createScene(aboxProfile, scene)
+                }
+            }.awaitAll()
+        }
+        val scenes = scenesFor(repo, aboxProfile)
+        assertEquals(count, scenes.size)
+    }
+
     private suspend fun scenesFor(
         repo: FakeSceneRepository,
         profileId: ProviderProfileId,