fix(mobile): align remote session lifecycle across platforms

src/apps/mobile/android/app/src/main/AndroidManifest.xml

@@ -19,11 +19,18 @@
         <activity
             android:name=".MainActivity"
             android:exported="true"
+            android:launchMode="singleTask"
             android:windowSoftInputMode="adjustResize">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="openbitfun" android:host="auth" android:pathPrefix="/callback" />
+            </intent-filter>
         </activity>
     </application>
 

src/apps/mobile/android/app/src/main/kotlin/com/openbitfun/mobile/app/MainActivity.kt

@@ -91,6 +91,12 @@ class MainActivity : ComponentActivity() {
         if (!intent.getBooleanExtra(DESIGN_PREVIEW_EXTRA, false)) accountModel().setBackground(false)
     }
 
+    override fun onNewIntent(intent: android.content.Intent) {
+        super.onNewIntent(intent)
+        setIntent(intent)
+        accountModel().notifyAuthorizationCallback()
+    }
+
     override fun onStop() {
         showStartupBrand = false
         showColdStart = false

src/apps/mobile/android/app/src/main/kotlin/com/openbitfun/mobile/app/platform/WindowMetrics.kt

@@ -103,6 +103,13 @@ internal fun rememberWindowMetrics(): WindowMetrics {
     val hasHingeSensor = remember(context) {
         context.packageManager.hasSystemFeature(FEATURE_SENSOR_HINGE_ANGLE)
     }
+    //卓易通在鸿蒙上会向 Android 兼容层暴露一个“垂直折痕”，但它不是
+    //Android WindowManager 的真实折叠区域。把它当成铰链会把普通宽屏窗口
+    //错误拆成左右两套页面。通过鸿蒙系统文件管理器包识别兼容层；普通
+    //Android 平板和真实 Android 折叠屏不会安装这个包，因此保持原行为。
+    val isHarmonyCompatibilityLayer = remember(context) {
+        context.packageManager.hasPackage("com.huawei.hmos.filemanager")
+    }
 
     val activity = remember(context) { context.findActivity() }
     // No activity means no window to track — a @Preview, or a composable hosted
@@ -154,9 +161,14 @@ internal fun rememberWindowMetrics(): WindowMetrics {
                 }
         }
     }
-    val foldInfo by foldInfoFlow.collectAsStateWithLifecycle(
+    val reportedFoldInfo by foldInfoFlow.collectAsStateWithLifecycle(
         AndroidFoldInfo(emptyList(), emptyList(), reduceFoldFacts(false, emptyList())),
     )
+    val foldInfo = if (isHarmonyCompatibilityLayer) {
+        AndroidFoldInfo(emptyList(), emptyList(), reduceFoldFacts(false, emptyList()))
+    } else {
+        reportedFoldInfo
+    }
 
     return WindowMetrics(
         widthDp = widthDp,
@@ -176,6 +188,14 @@ internal fun rememberWindowMetrics(): WindowMetrics {
 
 private const val FEATURE_SENSOR_HINGE_ANGLE = "android.hardware.sensor.hinge_angle"
 
+private fun android.content.pm.PackageManager.hasPackage(packageName: String): Boolean =
+    try {
+        getApplicationInfo(packageName, 0)
+        true
+    } catch (_: android.content.pm.PackageManager.NameNotFoundException) {
+        false
+    }
+
 private fun Context.findActivity(): Activity? {
     var current: Context? = this
     while (current is ContextWrapper) {

src/apps/mobile/android/app/src/main/kotlin/com/openbitfun/mobile/app/ui/account/AccountScreen.kt

@@ -109,7 +109,10 @@ internal fun AccountLoginPage(
     val authorizationUrl = (state as? AccountUiState.Authorizing)?.authorizationUrl?.let { value ->
         val uri = android.net.Uri.parse(value)
         if (uri.scheme == "https" && uri.host == "auth.openbitfun.com") {
-            uri.buildUpon().appendQueryParameter("locale", locale).build().toString()
+            uri.buildUpon()
+                .appendQueryParameter("locale", locale)
+                .appendQueryParameter("returnTo", "openbitfun://auth/callback")
+                .build().toString()
         } else value
     }
     val uriHandler = androidx.compose.ui.platform.LocalUriHandler.current

src/apps/mobile/android/app/src/main/kotlin/com/openbitfun/mobile/app/ui/chat/ConversationView.kt

@@ -271,7 +271,9 @@ internal fun ConversationView(
         Box(modifier = Modifier.fillMaxSize().testTag(CONVERSATION_TEST_TAG)) {
             if (timeline == null) {
                 Box(Modifier.fillMaxSize()) {
-                    if (loadingVisible) ConversationLoadingState(Modifier.fillMaxSize())
+                    if (loadingVisible) ConversationLoadingState(
+                        Modifier.fillMaxSize().padding(top = topInset, bottom = bottomInset),
+                    )
                 }
             } else if (visibleRows.isEmpty() && !state.hasMoreMessages) {
                 ConversationEmptyState(modifier = Modifier.fillMaxSize())

src/apps/mobile/android/app/src/main/kotlin/com/openbitfun/mobile/app/ui/chat/tool/ToolStatusList.kt

@@ -9,6 +9,7 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
@@ -31,6 +32,7 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
+import org.json.JSONObject
 import com.openbitfun.mobile.app.R
 import com.openbitfun.mobile.core.feature.session.ToolAction
 import com.openbitfun.mobile.core.feature.session.ToolCard
@@ -212,6 +214,11 @@ internal fun ToolStatusRow(
         }
         return
     }
+    if (tool.kind == com.openbitfun.mobile.core.feature.session.ToolKind.TODO ||
+        tool.operation == ToolOperation.UPDATE_TODOS || tool.name.equals("TodoWrite", ignoreCase = true)) {
+        TodoToolCard(tool = tool, enabled = enabled, modifier = modifier)
+        return
+    }
     var localExpanded by rememberSaveable(tool.id) { mutableStateOf(false) }
     val disclosure = LocalToolDisclosure.current
     val expanded = disclosure?.let { it.selected == tool.id } ?: localExpanded
@@ -358,6 +365,79 @@ internal fun ToolStatusRow(
     }
 }
 
+
+private data class TodoItem(val content: String, val status: String)
+
+private fun parseTodoItems(value: String): List<TodoItem> = runCatching {
+    val root = JSONObject(value)
+    val todos = root.optJSONArray("todos") ?: return@runCatching emptyList()
+    buildList {
+        for (index in 0 until todos.length()) {
+            val item = todos.optJSONObject(index) ?: continue
+            val content = item.optString("content").trim()
+            if (content.isNotEmpty()) add(TodoItem(content, item.optString("status", "pending")))
+        }
+    }
+}.getOrDefault(emptyList())
+
+@Composable
+private fun TodoToolCard(tool: ToolCard, enabled: Boolean, modifier: Modifier) {
+    var expanded by rememberSaveable(tool.id) { mutableStateOf(tool.phase != ToolPhase.COMPLETED) }
+    val items = remember(tool.input, tool.output) {
+        parseTodoItems(tool.input).ifEmpty { parseTodoItems(tool.output) }
+    }
+    val done = items.count { it.status.equals("completed", true) }
+    val title = stringResource(R.string.tool_op_update_todos)
+    val active = items.firstOrNull { it.status.equals("in_progress", true) }
+        ?: items.firstOrNull { it.status.equals("pending", true) }
+    val summary = when {
+        items.isEmpty() -> tool.target.ifBlank { stringResource(R.string.tool_todo_fallback) }
+        done == items.size -> stringResource(R.string.tool_todo_all_completed)
+        else -> active?.content ?: items.first().content
+    }
+    Column(
+        modifier = modifier.fillMaxWidth()
+            .background(MaterialTheme.colorScheme.surfaceVariant, RoundedCornerShape(16.dp))
+            .border(1.dp, MaterialTheme.colorScheme.outlineVariant, RoundedCornerShape(16.dp))
+            .padding(horizontal = 12.dp, vertical = 10.dp),
+        verticalArrangement = Arrangement.spacedBy(8.dp),
+    ) {
+        Row(
+            modifier = Modifier.fillMaxWidth().clickable { expanded = !expanded },
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.spacedBy(9.dp),
+        ) {
+            ToolStatusIcon(tool, Modifier)
+            Column(Modifier.weight(1f), verticalArrangement = Arrangement.spacedBy(2.dp)) {
+                Text(title, style = MaterialTheme.typography.bodyMedium, fontWeight = androidx.compose.ui.text.font.FontWeight.SemiBold)
+                Text(summary, style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant,
+                    maxLines = 1, overflow = TextOverflow.Ellipsis)
+            }
+            if (items.isNotEmpty()) Text("$done/${items.size}", style = MaterialTheme.typography.labelSmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant)
+            Chevron(if (expanded) R.drawable.ic_symbol_chevron_down else R.drawable.ic_symbol_chevron_right)
+        }
+        if (expanded && items.isNotEmpty()) {
+            Column(Modifier.fillMaxWidth().padding(start = 29.dp), verticalArrangement = Arrangement.spacedBy(8.dp)) {
+                Box(Modifier.fillMaxWidth().height(2.dp).background(MaterialTheme.colorScheme.outlineVariant, RoundedCornerShape(2.dp))) {
+                    Box(Modifier.fillMaxWidth(done.toFloat() / items.size.toFloat()).height(2.dp).background(MaterialTheme.colorScheme.onSurfaceVariant, RoundedCornerShape(2.dp)))
+                }
+                items.forEach { item ->
+                    Row(horizontalArrangement = Arrangement.spacedBy(8.dp), verticalAlignment = Alignment.Top) {
+                        Text(if (item.status.equals("completed", true)) "✓" else if (item.status.equals("cancelled", true)) "×" else if (item.status.equals("in_progress", true)) "•" else "○",
+                            color = MaterialTheme.colorScheme.onSurfaceVariant)
+                        Text(item.content, style = MaterialTheme.typography.bodySmall,
+                            color = if (item.status.equals("in_progress", true)) MaterialTheme.colorScheme.onSurface else MaterialTheme.colorScheme.onSurfaceVariant)
+                    }
+                }
+            }
+        }
+        if (expanded && items.isEmpty() && tool.output.isNotBlank()) {
+            ToolDetail(stringResource(R.string.tool_output), tool.output, tool.phase == ToolPhase.FAILED)
+        }
+    }
+}
+
 /**
  * The row's one line, ported from `toolLineLabel`.
  *

src/apps/mobile/android/app/src/main/kotlin/com/openbitfun/mobile/app/ui/remote/CreateSessionScreen.kt

@@ -99,9 +99,13 @@ internal fun CreateSessionRoute(
     val modelOptions = ready?.createModelOptions(stringResource(R.string.models_unnamed)).orEmpty()
     val baseline = rememberSaveable { mutableStateOf(ready?.selectedSessionId) }
     val created = ready?.selectedSessionId
-    val hasTimeline = ready?.timeline != null
-    LaunchedEffect(created, hasTimeline) {
-        if (created != null && created != baseline.value && hasTimeline) onCreated(created)
+    LaunchedEffect(created) {
+        // The shared store publishes the new id only after the remote create
+        // has committed. Do not wait for a non-null timeline here: an empty
+        // session has no records, and a delayed stream must not strand the
+        // user on the creation surface. ConversationView owns that loading
+        // state once the id has been routed.
+        if (created != null && created != baseline.value) onCreated(created)
     }
 
     CreateSessionScreen(

src/apps/mobile/android/app/src/main/kotlin/com/openbitfun/mobile/app/ui/remote/PairingScreen.kt

@@ -75,6 +75,10 @@ internal fun AccountRemoteScreen(
     requestedSessionId: String? = null,
     creatingSession: Boolean = false,
     onOpenSession: (String) -> Unit = {},
+    // CreateSession is already opened by the shared store. Keep its route
+    // callback separate from the sidebar callback, which also dispatches an
+    // Open intent for an existing row.
+    onCreatedSession: (String) -> Unit = onOpenSession,
     onCreateSession: () -> Unit = {},
     onRemoteHome: () -> Unit = {},
     modifier: Modifier,
@@ -99,6 +103,7 @@ internal fun AccountRemoteScreen(
         requestedSessionId = requestedSessionId,
         creatingSession = creatingSession,
         onOpenSession = onOpenSession,
+        onCreatedSession = onCreatedSession,
         onCreateSession = onCreateSession,
         onRemoteHome = onRemoteHome,
         connectionDetails = {
@@ -129,6 +134,7 @@ private fun RemoteConnectedScreen(
     requestedSessionId: String?,
     creatingSession: Boolean,
     onOpenSession: (String) -> Unit,
+    onCreatedSession: (String) -> Unit,
     onCreateSession: () -> Unit,
     onRemoteHome: () -> Unit,
     connectionDetails: @Composable () -> Unit,
@@ -207,7 +213,7 @@ private fun RemoteConnectedScreen(
             compact = compact,
             onDevicePick = onCreateDevicePick,
             onBack = onRemoteHome,
-            onCreated = onOpenSession,
+            onCreated = onCreatedSession,
             onWorkspaceIntent = onWorkspaceIntent,
             onIntent = onSessionIntent,
             modifier = modifier,

src/apps/mobile/android/app/src/main/kotlin/com/openbitfun/mobile/app/ui/shell/MobileScreen.kt

@@ -137,6 +137,16 @@ internal fun MobileScreen(onAccountRestored: (Boolean) -> Unit = {}) {
     val accountPhase by accountViewModel.connectionPhase.collectAsStateWithLifecycle()
     val accountWorkspaceDirectory by accountViewModel.workspaceDirectory.collectAsStateWithLifecycle()
     val readyAccount = accountState as? AccountUiState.Ready
+    LaunchedEffect(accountPhase, shell.remoteCreating) {
+        // A create failure is terminal for the creation route. The shared
+        // store keeps the last valid session projection so returning to the
+        // remote home here restores the same pre-create route as Harmony and
+        // iOS, while the store's typed create error remains available to the
+        // surface-level error/toast handling.
+        if (shell.remoteCreating && accountPhase == ConnectionPhase.FAILED) {
+            shell.closeRemoteSession()
+        }
+    }
     LaunchedEffect(accountState) {
         if (accountState !is AccountUiState.Idle && accountState !is AccountUiState.Restoring) {
             onAccountRestored(readyAccount?.userId?.isNotBlank() == true)
@@ -188,6 +198,13 @@ internal fun MobileScreen(onAccountRestored: (Boolean) -> Unit = {}) {
         RemoteControlSource.ACCOUNT_DEVICE -> accountRemoteState
         RemoteControlSource.NONE -> RemoteSessionUiState.Idle
     }
+    val committedRemoteSessions = (activeRemoteState as? RemoteSessionUiState.Ready)?.sessions.orEmpty()
+    // Shell navigation is only a transient request while the shared store
+    // catches up. Once a delete succeeds the row disappears, which invalidates
+    // a stale shell request and lets the store's selection take over.
+    val routedSessionId = shell.remoteSessionId
+        ?.takeIf { requested -> committedRemoteSessions.any { it.id == requested } }
+        ?: (activeRemoteState as? RemoteSessionUiState.Ready)?.selectedSessionId
     val activeWorkspaceDirectory = when (controlSummary.source) {
         RemoteControlSource.ACCOUNT_DEVICE -> accountWorkspaceDirectory
         RemoteControlSource.NONE -> WorkspaceSessionDirectoryUiState(emptyList())
@@ -330,7 +347,10 @@ internal fun MobileScreen(onAccountRestored: (Boolean) -> Unit = {}) {
             workspaceState = activeWorkspaceState,
             workspaceDirectory = activeWorkspaceDirectory,
             remoteActive = shell.surface == MobileSurface.REMOTE,
-            remoteSelectedSessionId = shell.remoteSessionId,
+            // The session store owns selection. The shell only owns the
+            // container route, so deleting the active row clears this value
+            // without leaving a stale requested session behind.
+            remoteSelectedSessionId = routedSessionId,
             query = shell.sidebarQuery,
             searchOpen = shell.searchOpen,
             onQueryChange = shell::search,
@@ -361,6 +381,11 @@ internal fun MobileScreen(onAccountRestored: (Boolean) -> Unit = {}) {
                 dispatchActiveSession(RemoteSessionIntent.Open(sessionId))
             },
             onCreateRemoteInWorkspace = { workspace, agentType ->
+                // Workspace quick-create used to dispatch directly while the
+                // shell still rendered the home surface, so its committed
+                // session had no creation route callback. Enter the same
+                // creation route as the global new-session action first.
+                shell.createRemoteSession()
                 // With an ID the create carries only the ID; the legacy triple is for pre-ID rows.
                 dispatchActiveSession(
                     RemoteSessionIntent.CreateSession(
@@ -374,7 +399,6 @@ internal fun MobileScreen(onAccountRestored: (Boolean) -> Unit = {}) {
                         workspaceId = workspace.workspaceId,
                     ),
                 )
-                shell.show(MobileSurface.REMOTE)
                 closeDrawer()
             },
             onWorkspaceTool = { path, connectionId, terminal ->
@@ -467,9 +491,13 @@ internal fun MobileScreen(onAccountRestored: (Boolean) -> Unit = {}) {
                                 null
                             },
                             compact = !wide,
-                            requestedSessionId = shell.remoteSessionId,
+                            requestedSessionId = routedSessionId,
                             creatingSession = shell.remoteCreating,
                             onOpenSession = shell::openRemoteSession,
+                            onCreatedSession = { id ->
+                                shell.openRemoteSession(id)
+                                closeDrawer()
+                            },
                             onCreateSession = shell::createRemoteSession,
                             onRemoteHome = shell::closeRemoteSession,
                             modifier = Modifier,

src/apps/mobile/android/app/src/main/kotlin/com/openbitfun/mobile/app/viewmodel/AccountViewModel.kt

@@ -77,6 +77,10 @@ internal class AccountViewModel(application: Application) : AndroidViewModel(app
         store.dispatch(intent)
     }
 
+    fun notifyAuthorizationCallback() {
+        store.notifyAuthorizationCallback()
+    }
+
     /** The handle General Chat reads the account's synced models through. */
 
     fun dispatchSession(intent: RemoteSessionIntent) {

src/apps/mobile/android/app/src/main/res/values-zh/strings.xml

@@ -526,4 +526,6 @@
     <string name="workspace_file_conflict">电脑上的文件已被修改，当前草稿仍保留。请先复制草稿，再重新打开文件以读取最新内容。</string>
     <string name="chat_load_older_failed">加载更早消息失败，点按重试。</string>
     <string name="chat_loading_older_messages">正在加载更早消息…</string>
+    <string name="tool_todo_fallback">任务列表</string>
+    <string name="tool_todo_all_completed">全部任务已完成</string>
 </resources>

src/apps/mobile/android/app/src/main/res/values/strings.xml

@@ -541,4 +541,6 @@
     <string name="workspace_file_conflict">File changed on the computer. Your draft is preserved. Copy it before reopening the file to load the latest version.</string>
     <string name="chat_load_older_failed">Could not load earlier messages. Tap to retry.</string>
     <string name="chat_loading_older_messages">Loading earlier messages…</string>
+    <string name="tool_todo_fallback">Task list</string>
+    <string name="tool_todo_all_completed">All tasks completed</string>
 </resources>