Q173: agents work in the company's or task's language, not the display language

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/shared/commands/organization.ts

@@ -1,4 +1,4 @@
-import type { ApprovalState, IdentitySource, PrincipalType, RiskLevel, RoleKey, TaskPriority, TaskStatus, UiLanguage, UiTheme, WritingMode } from "../domain";
+import type { ApprovalState, IdentitySource, PrincipalType, RiskLevel, RoleKey, TaskPriority, TaskStatus, UiLanguage, UiTheme, WorkLanguage, WritingMode } from "../domain";
 
 export interface SetActiveOrganizationInput {
   orgId: string;
@@ -92,6 +92,8 @@ export interface CreateTaskInput {
   requiresFilesystem: boolean;
   /** Defaults to conversational. */
   writingMode?: WritingMode;
+  /** Null or omitted follows the company's working language. */
+  workLanguage?: WorkLanguage | null;
   /** Provenance: 'chat_wake' for mention-wake vehicles, 'goal_review' for CEO goal checkpoints, 'task_review' for a manager's review of work, omitted for plain work. */
   origin?: "chat_wake" | "goal_review" | "task_review";
 }
@@ -121,6 +123,7 @@ export interface UpdateTaskInput {
   workspaceId: string | null;
   requiresFilesystem: boolean;
   writingMode: WritingMode;
+  workLanguage: WorkLanguage | null;
 }
 
 export interface SetTaskBlockedInput {
@@ -154,6 +157,7 @@ export interface UpdateOrganizationInput {
   executionMode: "ai_ceo" | "ai_cofounder";
   autoApproveHires: boolean;
   reviewDeliverables: boolean;
+  workLanguage: WorkLanguage;
 }
 
 export interface SetGoalDueDateInput {

src/shared/commands/skills.ts

@@ -27,6 +27,8 @@ export interface ResolveAgentSkillsInput {
   runModel: { providerKey: string; model: string | null };
   /** False on technical and structured tasks, which skip the house-style skill. */
   houseStyle: boolean;
+  /** Picks the house-style variant: the task's working language. */
+  language: "en" | "zh";
 }
 
 export interface RunSkillTestsInput {

src/shared/domain.ts

@@ -33,6 +33,9 @@ export type ProviderAuthType = ValueOf<typeof PROVIDER_AUTH_TYPE>;
 export type SocialPlatform = ValueOf<typeof SOCIAL_PLATFORM>;
 export type FileScanState = ValueOf<typeof FILE_SCAN_STATE>;
 
+/** The language agents write in; separate from the app's display language. */
+export type WorkLanguage = "en" | "zh";
+
 export interface OrganizationRecord {
   id: string;
   name: string;
@@ -45,6 +48,8 @@ export interface OrganizationRecord {
   /** The provider and model that audit goal completion, never the executor's own; null until the board sets them. */
   auditProviderId: string | null;
   auditModelId: string | null;
+  /** The language its agents work in unless a task sets its own. */
+  workLanguage: WorkLanguage;
   createdAt: string;
 }
 
@@ -134,6 +139,8 @@ export interface TaskRecord {
   parentTaskId: string | null;
   requiresFilesystem: boolean;
   writingMode: WritingMode;
+  /** Overrides the company's working language for this task; null follows the company. */
+  workLanguage: WorkLanguage | null;
   /** Set when the task spent its run budget without reaching done. */
   stalledReason: string | null;
   /** Why the heartbeat last failed to queue the task; cleared once it queues. */