fix(chat): preserve streaming conversation when switching sessions

apps/desktop/src/main/services/project-store.ts

@@ -712,6 +712,17 @@ export class ProjectStoreService {
     await writeJsonFile(await this.getSessionMessagesPath(sessionId), messages);
   }
 
+  async upsertSessionMessage(sessionId: string, message: ChatMessage): Promise<void> {
+    const messages = await this.listSessionMessages(sessionId);
+    const existingIndex = messages.findIndex((entry) => entry.id === message.id);
+    if (existingIndex >= 0) {
+      messages[existingIndex] = message;
+    } else {
+      messages.push(message);
+    }
+    await writeJsonFile(await this.getSessionMessagesPath(sessionId), messages);
+  }
+
   async listCurrentProjectSkills(): Promise<WorkspaceSkillSummary[]> {
     const project = await this.getActiveProject();
     return this.listProjectSkills(project.id);

packages/shared-types/src/index.ts

 export const IPC_CHANNELS = {
   workspaceGetSummary: "workspace:get-summary",
   workspaceWarmup: "workspace:warmup",
+  windowMinimize: "window:minimize",
+  windowMaximize: "window:maximize",
+  windowClose: "window:close",
   gatewayStatus: "gateway:status",
   gatewayConnect: "gateway:connect",
   gatewayDisconnect: "gateway:disconnect",
@@ -20,6 +23,7 @@
   configSave: "config:save",
   projectsList: "projects:list",
   projectsSetActive: "projects:set-active",
+  projectsResolveIntent: "projects:resolve-intent",
   skillCatalogList: "skill-catalog:list",
   chatListSessions: "chat:list-sessions",
   chatListSessionsByProject: "chat:list-sessions-by-project",
@@ -27,6 +31,7 @@
   chatCreateSessionForProject: "chat:create-session-for-project",
   chatCloseSession: "chat:close-session",
   chatListMessages: "chat:list-messages",
+  chatPickImageAttachment: "chat:pick-image-attachment",
   chatSendPrompt: "chat:send-prompt",
   chatStreamPrompt: "chat:stream-prompt",
   chatStreamEvent: "chat:stream-event",
@@ -38,6 +43,7 @@
   profileGetSummary: "profile:get-summary",
   creditsGetSummary: "credits:get-summary",
   skillsList: "skills:list",
+  expertsList: "experts:list",
   modelConfigGetSummary: "model-config:get-summary",
   systemGetSummary: "system:get-summary"
 } as const;
@@ -66,6 +72,7 @@ export type SetupMode = "employee-key" | "direct-provider";
 export type ChatLaunchState = "unbound" | "starting" | "ready" | "error";
 export type WorkspaceStartupPhase = "idle" | "syncing-config" | "syncing-projects" | "starting-runtime" | "connecting-gateway" | "ready" | "error";
 export type SkillDownloadState = "pending" | "downloading" | "ready" | "failed" | "removed";
+export type ExpertEntryMode = "standalone" | "home-chat-shortcut";
 export type DailyReportDeliveryState = "draft" | "sent" | "failed";
 
 export interface WorkspaceWarmupResult {
@@ -256,6 +263,17 @@ export interface WorkspaceSkillSummary {
   lastError?: string;
 }
 
+export interface ExpertDefinition {
+  id: string;
+  name: string;
+  entryMode: ExpertEntryMode;
+  description?: string;
+  starterPrompt?: string;
+  promptFile?: string;
+  promptAvailable: boolean;
+  projectMatchKeywords: string[];
+}
+
 export interface PluginSummary {
   id: string;
   name: string;
@@ -349,6 +367,16 @@ export interface ProjectSummary {
   defaultEntryType?: ProjectPackageEntryType;
 }
 
+export interface ProjectIntentSuggestion {
+  projectId: string;
+  projectName: string;
+  projectDisplayName: string;
+  score: number;
+  confidence: "low" | "medium" | "high";
+  reason: string;
+  matchedAliases: string[];
+}
+
 export interface ProjectSessionSummary extends SessionSummary {
   projectId: string;
 }
@@ -386,6 +414,18 @@ export interface ProjectSessionState {
   draft: string;
 }
 
+export interface ChatAttachment {
+  kind: "image";
+  name: string;
+  mimeType: string;
+  localPath: string;
+}
+
+export interface ProjectResolvedAttachment extends ChatAttachment {
+  projectPath: string;
+  relativeProjectPath: string;
+}
+
 export interface ProjectExecutionRequest {
   sessionId: string;
   projectId: string;
@@ -393,6 +433,7 @@ export interface ProjectExecutionRequest {
   userPrompt: string;
   context: ProjectContextSnapshot;
   selectedSkillId: string | null;
+  attachments?: ProjectResolvedAttachment[];
   projectConfig?: ProjectPackageConfig | null;
 }
 
@@ -418,9 +459,12 @@ export interface ChatMessage {
   role: MessageRole;
   content: string;
   createdAt: string;
+  streamState?: "streaming" | "error";
+  statusLabel?: string;
+  statusDetail?: string;
 }
 
-export type ChatExecutionPolicySource = "cloud-default" | "cloud-skill-binding" | "local-fallback";
+export type ChatExecutionPolicySource = "cloud-default" | "cloud-skill-binding" | "local-fallback" | "client-config";
 export type ChatExecutionRoutingMode = ModelRoutingMode | SkillModelBindingMode | "fallback";
 
 export interface ChatExecutionPolicy {
@@ -437,6 +481,8 @@ export interface ChatStreamPromptResult {
   requestId: string;
   sessionId: string;
   runId?: string;
+  userMessageId?: string;
+  assistantMessageId: string;
   executionPolicy?: ChatExecutionPolicy;
 }
 
@@ -482,6 +528,7 @@ export interface ChatStreamErrorEvent {
   sessionId: string;
   runId?: string;
   message: string;
+  errorCategory?: string;
 }
 
 export type ChatStreamEvent = ChatStreamStartedEvent | ChatStreamStatusEvent | ChatStreamDeltaEvent | ChatStreamCompletedEvent | ChatStreamErrorEvent;
@@ -494,6 +541,60 @@ export interface PromptResult {
   executionPolicy?: ChatExecutionPolicy;
 }
 
+export interface ModelEndpointConfig {
+  baseUrl: string;
+  apiKeyConfigured: boolean;
+  modelId?: string;
+}
+
+export interface DigitalHumanModelConfig {
+  volcRegion: string;
+  volcService: string;
+  volcHost: string;
+  volcScheme: string;
+  ttsVoice: string;
+  qiniuBucket: string;
+  qiniuDomain: string;
+  qiniuKeyPrefix: string;
+  volcAccessKeyConfigured: boolean;
+  volcSecretKeyConfigured: boolean;
+  qiniuAccessKeyConfigured: boolean;
+  qiniuSecretKeyConfigured: boolean;
+}
+
+export interface ExpertModelConfig {
+  image: ModelEndpointConfig;
+  video: ModelEndpointConfig;
+  copywriting: ModelEndpointConfig;
+  digitalHuman: DigitalHumanModelConfig;
+}
+
+export const FIXED_EXPERT_MODEL_ENDPOINTS = {
+  copywriting: {
+    baseUrl: "https://dashscope.aliyuncs.com/compatible-mode/v1",
+    modelId: "qwen3.5-plus"
+  },
+  image: {
+    baseUrl: "https://ark.cn-beijing.volces.com/api/v3/images/generations",
+    modelId: "doubao-seedream-5-0-260128"
+  },
+  video: {
+    baseUrl: "https://ark.cn-beijing.volces.com/api/v3",
+    modelId: "doubao-seedance-2-0-260128"
+  }
+} as const;
+
+export const FIXED_DIGITAL_HUMAN_CONFIG = {
+  volcRegion: "cn-north-1",
+  volcService: "cv",
+  volcHost: "visual.volcengineapi.com",
+  volcScheme: "https",
+  ttsVoice: "zh-CN-YunxiNeural",
+  qiniuBucket: "alketas",
+  qiniuDomain: "http://tcwwu6wg4.hd-bkt.clouddn.com",
+  qiniuKeyPrefix: "omnihuman"
+} as const;
+
 export interface AppConfig {
   setupMode: SetupMode;
   provider: string;
@@ -507,6 +608,7 @@ export interface AppConfig {
   cloudApiBaseUrl: string;
   runtimeCloudApiBaseUrl: string;
   runtimeMode: RuntimeModePreference;
+  expertModelConfig: ExpertModelConfig;
 }
 
 export interface DiagnosticsExportResult {
@@ -515,6 +617,19 @@ export interface DiagnosticsExportResult {
   startupLogPath?: string;
 }
 
+export interface ModelEndpointInput {
+  baseUrl?: string;
+  apiKey?: string;
+  modelId?: string;
+}
+
+export interface DigitalHumanModelInput {
+  volcAccessKey?: string;
+  volcSecretKey?: string;
+  qiniuAccessKey?: string;
+  qiniuSecretKey?: string;
+}
+
 export interface SaveConfigInput {
   setupMode: SetupMode;
   provider: string;
@@ -528,6 +643,12 @@ export interface SaveConfigInput {
   cloudApiBaseUrl: string;
   runtimeCloudApiBaseUrl: string;
   runtimeMode: RuntimeModePreference;
+  expertModelConfig?: {
+    image?: ModelEndpointInput;
+    video?: ModelEndpointInput;
+    copywriting?: ModelEndpointInput;
+    digitalHuman?: DigitalHumanModelInput;
+  };
 }
 
 export interface AuthSessionSummary {
@@ -651,6 +772,11 @@ export interface DesktopApi {
     getSummary(): Promise<WorkspaceSummary>;
     warmup(): Promise<WorkspaceWarmupResult>;
   };
+  window: {
+    minimize(): Promise<void>;
+    maximize(): Promise<void>;
+    close(): Promise<void>;
+  };
   gateway: {
     status(): Promise<GatewayStatus>;
     connect(): Promise<GatewayStatus>;
@@ -681,6 +807,7 @@ export interface DesktopApi {
   projects: {
     list(): Promise<ProjectSummary[]>;
     setActive(projectId: string): Promise<WorkspaceSummary>;
+    resolveIntent(prompt: string, currentProjectId?: string): Promise<ProjectIntentSuggestion | null>;
   };
   skillCatalog: {
     list(): Promise<SkillCatalogItem[]>;
@@ -699,6 +826,9 @@ export interface DesktopApi {
   skills: {
     list(): Promise<SkillSummary[]>;
   };
+  experts: {
+    list(): Promise<ExpertDefinition[]>;
+  };
   modelConfig: {
     getSummary(): Promise<ModelConfigSummary>;
   };
@@ -712,8 +842,9 @@ export interface DesktopApi {
     createSessionForProject(projectId: string, title?: string): Promise<ProjectSessionSummary>;
     closeSession(sessionId: string): Promise<ProjectSessionSummary[]>;
     listMessages(sessionId: string): Promise<ChatMessage[]>;
-    sendPrompt(sessionId: string, prompt: string, skillId?: string): Promise<PromptResult>;
-    streamPrompt(sessionId: string, prompt: string, skillId?: string): Promise<ChatStreamPromptResult>;
+    pickImageAttachment(): Promise<ChatAttachment | null>;
+    sendPrompt(sessionId: string, prompt: string, skillId?: string, attachments?: ChatAttachment[]): Promise<PromptResult>;
+    streamPrompt(sessionId: string, prompt: string, skillId?: string, attachments?: ChatAttachment[]): Promise<ChatStreamPromptResult>;
     onStreamEvent(listener: ChatStreamListener): () => void;
   };
   diagnostics: {