feat(harmonyos): improve remote chat interaction parity

src/apps/mobile/harmonyos/AGENTS.md

@@ -78,6 +78,24 @@ source scripts/ohos-env.sh
 
 ## Responsive interaction semantics
 
+- Every HarmonyOS change that can affect presentation or interaction — including
+  state, actions, ViewModels, and components — must treat compact phones, wide
+  screens, and foldables in both folded and unfolded postures as first-class
+  targets. Do not implement or review a feature against only the currently
+  visible layout.
+- Before editing, search for every responsive host and presentation branch that
+  exposes the affected action or state (for example compact overlays, wide
+  master/detail hosts, sidebars, routed destinations, sheets, and popovers).
+  Keep their behavior and capability gating aligned; a fix is incomplete while
+  an equivalent wide or compact entry point still uses legacy behavior.
+- Do not infer device class from a single width captured at startup. Layout must
+  remain correct when a foldable changes posture or window size while the app is
+  running, preserving state, selection, and interaction meaning across the
+  transition.
+- For UI changes, verify at minimum one compact layout and one wide layout. When
+  a foldable or resizable emulator/device is available, also exercise a live
+  folded/unfolded or resize transition. Record any unverified posture explicitly
+  in the handoff instead of treating a phone-only check as sufficient evidence.
 - Wide and compact layouts must keep the same interaction meaning. Responsive presentation may change spacing and available width, but it must not turn a lightweight anchored action menu into a bottom sheet by default.
 - Conversation-header overflow actions open from the top-right trigger as an anchored popover on both compact and wide layouts. Use a bottom sheet only when the content is a genuinely large or multi-step mobile workflow and the design explicitly calls for it.
 - Anchor popovers to their actual trigger with `bindPopup` or the equivalent platform API. Do not emulate the anchor with unrelated page-level absolute positioning.

src/apps/mobile/harmonyos/entry/src/main/ets/i18n/EnUsMessages.ets

@@ -197,6 +197,10 @@ export const EN_US_MESSAGES: [string, string][] = [
   ['remote.pickSession', 'Choose a session'],
   ['remote.pickSessionText', 'Open a session from the sidebar, or create one.'],
   ['remote.startSession', 'New session'],
+  ['remote.harness.title', 'Choose execution mode'],
+  ['remote.harness.minimal', 'Minimal'],
+  ['remote.harness.standard', 'Standard'],
+  ['remote.harness.ultimate', 'Ultimate'],
   ['remote.connectTitle', 'Connect desktop'],
   ['remote.connectText', 'Scan the QR code on the desktop to start remote work.'],
   ['remote.actions', 'Remote settings'],
@@ -456,6 +460,10 @@ export const EN_US_MESSAGES: [string, string][] = [
   ['chat.approve', 'Approve'],
   ['chat.reject', 'Reject'],
   ['chat.cancelTool', 'Cancel tool'],
+  ['chat.planView', 'View plan'],
+  ['chat.planBuild', 'Build Plan'],
+  ['chat.planBuildUnavailable', 'Update the desktop app to build plans from mobile.'],
+  ['chat.planBuildWaitForTurn', 'Wait for the current task to finish before building this plan.'],
   ['chat.toolInput', 'Tool input'],
   ['chat.reset', 'Reset'],
   ['chat.editJsonInput', 'Edit JSON input'],

src/apps/mobile/harmonyos/entry/src/main/ets/i18n/ZhCnMessages.ets

@@ -197,6 +197,10 @@ export const ZH_CN_MESSAGES: [string, string][] = [
   ['remote.pickSession', '选择一个会话'],
   ['remote.pickSessionText', '从侧边栏打开会话，或新建一个。'],
   ['remote.startSession', '新建会话'],
+  ['remote.harness.title', '选择执行模式'],
+  ['remote.harness.minimal', '极简'],
+  ['remote.harness.standard', '标准'],
+  ['remote.harness.ultimate', '极致'],
   ['remote.connectTitle', '连接桌面端'],
   ['remote.connectText', '扫描桌面端显示的二维码，开始远程处理任务。'],
   ['remote.actions', '远程设置'],
@@ -456,6 +460,10 @@ export const ZH_CN_MESSAGES: [string, string][] = [
   ['chat.approve', '批准'],
   ['chat.reject', '拒绝'],
   ['chat.cancelTool', '取消工具'],
+  ['chat.planView', '查看计划'],
+  ['chat.planBuild', '构建 Plan'],
+  ['chat.planBuildUnavailable', '请更新桌面端后再从手机构建 Plan。'],
+  ['chat.planBuildWaitForTurn', '请等待当前任务结束后再构建这个 Plan。'],
   ['chat.toolInput', '工具输入'],
   ['chat.reset', '重置'],
   ['chat.editJsonInput', '编辑 JSON 输入'],

src/apps/mobile/harmonyos/entry/src/main/ets/model/RemoteModels.ets

@@ -126,6 +126,9 @@ export interface RemoteCommand {
   known_msg_count?: number;
   known_model_catalog_version?: number;
   turn_id?: string;
+  display_content?: string;
+  plan_file_path?: string;
+  plan_name?: string;
   tool_id?: string;
   model_id?: string;
   reason?: string;
@@ -290,6 +293,22 @@ export interface SendMessageResponse extends CommandStatusResponse {
   turn_id?: string;
 }
 
+export interface SteerTurnResponse extends CommandStatusResponse {
+  session_id?: string;
+  turn_id?: string;
+  steering_id?: string;
+}
+
+export interface SteerTurnResult {
+  sessionId: string;
+  turnId: string;
+  steeringId: string;
+}
+
+export const REMOTE_CAPABILITY_DIALOG_STEER_V1: string = 'dialog_steer_v1';
+export const REMOTE_CAPABILITY_PLAN_BUILD_V1: string = 'plan_build_v1';
+export const REMOTE_CAPABILITY_HARNESS_PROFILES_V1: string = 'harness_profiles_v1';
+
 export interface RemoteModelConfig {
   id: string;
   name: string;
@@ -360,6 +379,13 @@ export interface RemoteToolStatusResponse {
   result_preview?: string;
   error_preview?: string;
   exit_code?: number;
+  plan?: RemotePlanToolResponse;
+}
+
+export interface RemotePlanToolResponse {
+  file_path: string;
+  name: string;
+  overview?: string;
 }
 
 export interface RemoteQuestionAnswerPayload {
@@ -372,10 +398,13 @@ export interface RemoteQuestionAnswerPayload {
 
 export interface ChatMessageItemResponse {
   type?: string;
+  steering_id?: string;
+  round_index?: number;
   content?: string;
   tool?: RemoteToolStatusResponse;
   is_subagent?: boolean;
   subItems?: ChatMessageItemResponse[];
+  images?: ImageAttachment[];
 }
 
 export interface ImageAttachment {

src/apps/mobile/harmonyos/entry/src/main/ets/pages/actions/ConversationIntent.ets

@@ -23,33 +23,47 @@ export enum ConversationIntentType {
   RemoveImage = 'remove_image',
   OpenFilePreview = 'open_file_preview',
   DownloadFile = 'download_file',
+  BuildPlan = 'build_plan',
   Send = 'send',
   VoiceInput = 'voice_input',
   ChatInputChanged = 'chat_input_changed'
 }
 
+export class PlanBuildRequest {
+  readonly path: string;
+  readonly name: string;
+
+  constructor(path: string, name: string) {
+    this.path = path;
+    this.name = name;
+  }
+}
+
 export class ConversationIntent {
   readonly type: ConversationIntentType;
   readonly value: string;
   readonly toolId: string;
   readonly updatedInput?: Object;
   readonly answers?: ConversationUiQuestionAnswer;
   readonly filePreviewRequest?: FilePreviewRequest;
+  readonly planBuildRequest?: PlanBuildRequest;
 
   constructor(
     type: ConversationIntentType,
     value: string = '',
     toolId: string = '',
     updatedInput?: Object,
     answers?: ConversationUiQuestionAnswer,
-    filePreviewRequest?: FilePreviewRequest
+    filePreviewRequest?: FilePreviewRequest,
+    planBuildRequest?: PlanBuildRequest
   ) {
     this.type = type;
     this.value = value;
     this.toolId = toolId;
     this.updatedInput = updatedInput;
     this.answers = answers;
     this.filePreviewRequest = filePreviewRequest;
+    this.planBuildRequest = planBuildRequest;
   }
 }
 
@@ -84,4 +98,16 @@ export class ConversationIntents {
       new FilePreviewRequest(reference, label)
     );
   }
+
+  static buildPlan(path: string, name: string): ConversationIntent {
+    return new ConversationIntent(
+      ConversationIntentType.BuildPlan,
+      '',
+      '',
+      undefined,
+      undefined,
+      undefined,
+      new PlanBuildRequest(path, name)
+    );
+  }
 }

src/apps/mobile/harmonyos/entry/src/main/ets/pages/actions/ConversationIntentDispatcher.ets

@@ -32,6 +32,7 @@ export interface ConversationIntentDispatcherHooks {
   readonly removeImage: (id: string) => void;
   readonly openFilePreview: (route: AppRoute, request: FilePreviewRequest) => void;
   readonly downloadFile: (path: string) => void;
+  readonly buildPlan: (path: string, name: string) => Promise<void>;
   readonly send: () => Promise<void>;
   readonly voiceInput: () => Promise<void>;
   readonly inputChanged: (route: AppRoute, value: string) => void;
@@ -81,6 +82,11 @@ export class ConversationIntentDispatcher {
       case ConversationIntentType.OpenFilePreview:
         if (intent.filePreviewRequest) this.hooks.openFilePreview(route, intent.filePreviewRequest); return;
       case ConversationIntentType.DownloadFile: this.hooks.downloadFile(intent.value); return;
+      case ConversationIntentType.BuildPlan:
+        if (route === AppRoute.RemoteChat && intent.planBuildRequest) {
+          void this.hooks.buildPlan(intent.planBuildRequest.path, intent.planBuildRequest.name);
+        }
+        return;
       case ConversationIntentType.Send: void this.hooks.send(); return;
       case ConversationIntentType.VoiceInput: void this.hooks.voiceInput(); return;
       case ConversationIntentType.ChatInputChanged: this.hooks.inputChanged(route, intent.value); return;

src/apps/mobile/harmonyos/entry/src/main/ets/pages/components/AppRootOverlaySurfaces.ets

@@ -12,6 +12,7 @@ import {
 import { GeneralChatPageState } from '../state/GeneralChatPageState';
 import { DeviceDirectoryState } from '../state/DeviceDirectoryState';
 import { RemotePageState } from '../state/RemotePageState';
+import { REMOTE_CAPABILITY_HARNESS_PROFILES_V1 } from '../../model/RemoteModels';
 import { AppSidebar } from './AppSidebar';
 import { ConnectView } from './ConnectView';
 import { RemoteControlSettingsSheet } from './RemoteControlSettingsSheet';
@@ -79,11 +80,13 @@ export struct AppSidebarSurface {
         this.remotePageState.desktopName,
       selectedSessionId: this.remoteSelectedSessionId(),
       runningSessionId: this.remoteRunningSessionId(),
+      supportsHarnessProfiles: this.remotePageState.supportsHostCapability(
+        REMOTE_CAPABILITY_HARNESS_PROFILES_V1),
       workspacePickerPlacement: this.sessionDetailsPlacement,
       onOpenSession: this.actions.onSidebar.openSession,
-      onCreateInWorkspace: (deviceId: string, path: string) => {
+      onCreateInWorkspace: (deviceId: string, path: string, agentType: string) => {
         this.actions.onSidebar.close();
-        this.actions.onRemoteHome.createInWorkspace(path, 'code', deviceId);
+        this.actions.onRemoteHome.createInWorkspace(path, agentType, deviceId);
       },
       onOpenWorkspace: (deviceId: string, path: string) => {
         this.actions.onRemoteHome.selectWorkspace(path, deviceId);

src/apps/mobile/harmonyos/entry/src/main/ets/pages/components/ChatMessageBubble.ets

@@ -72,6 +72,7 @@ export struct ChatMessageBubble {
   @Event onCopyMessage: (text: string) => void = (_text: string) => {};
   @Event onRetryMessage: (text: string) => void = (_text: string) => {};
   @Event onOpenFilePreview: (path: string, label: string) => void = (_path: string, _label: string) => {};
+  @Event onBuildPlan: (path: string, name: string) => void = (_path: string, _name: string) => {};
   @Event onDownloadFile: (path: string) => void = (_path: string) => {};
   private readonly fileReferenceCache: MessageFileReferenceProjectionCache =
     new MessageFileReferenceProjectionCache();
@@ -302,7 +303,12 @@ export struct ChatMessageBubble {
     if (this.isSubagentEntry(entry)) {
       this.SubagentGroup(entry, path, childActiveScope)
     } else {
-      if (this.isThinkingEntry(entry)) {
+      if (this.isUserSteeringEntry(entry)) {
+        ChatUserMessageBubble({
+          item: this.steeringMessage(entry, path),
+          showRetryAction: false
+        })
+      } else if (this.isThinkingEntry(entry)) {
         this.Thinking(
           entry.content || '',
           statusOverride || this.item.status,
@@ -339,7 +345,8 @@ export struct ChatMessageBubble {
       onRejectTool: this.onRejectTool,
       onCancelTool: this.onCancelTool,
       onAnswerQuestion: this.onAnswerQuestion,
-      onOpenFilePreview: this.onOpenFilePreview
+      onOpenFilePreview: this.onOpenFilePreview,
+      onBuildPlan: this.onBuildPlan
     })
   }
 
@@ -387,6 +394,9 @@ export struct ChatMessageBubble {
       },
       onOpenFilePreview: (path: string, label: string) => {
         this.onOpenFilePreview(path, label);
+      },
+      onBuildPlan: (path: string, name: string) => {
+        this.onBuildPlan(path, name);
       }
     })
   }
@@ -657,6 +667,21 @@ export struct ChatMessageBubble {
     return ChatMessageStructurePolicy.isThinkingEntry(entry);
   }
 
+  private isUserSteeringEntry(entry: ConversationUiMessageItem): boolean {
+    return ChatMessageStructurePolicy.isUserSteeringEntry(entry);
+  }
+
+  private steeringMessage(entry: ConversationUiMessageItem, path: string): ConversationUiMessage {
+    return {
+      id: entry.steering_id || `${this.item.id}-${path}-steering`,
+      role: 'user',
+      text: entry.content || '',
+      status: 'sent',
+      detail: '',
+      images: entry.images
+    };
+  }
+
   private isTextEntry(entry: ConversationUiMessageItem): boolean {
     return ChatMessageStructurePolicy.isTextEntry(entry);
   }