fix: scope prompt catalog type to client

packages/api/session-controller/src/client/contract/session.ts

@@ -7,15 +7,25 @@
  * must stub); implementation-internal entry points (history staging, wire-frame
  * dispatch) stay on the class, invisible out here.
  */
-import type { AttachmentIdType, ImageAttachmentRef } from '@deepseek-ai/dsh-attachment'
+import type { AttachmentIdType, ImageAttachmentRef, ImageMediaType } from '@deepseek-ai/dsh-attachment'
 import type { MessageId } from '@deepseek-ai/dsh-llm/brand'
 import type { SessionId } from '@deepseek-ai/dsh-session/types'
 import type { RemoteResult } from '@deepseek-ai/dsh-typert-protocol'
 import type { ObservableSnapshot } from '@deepseek-ai/dsh-client-store'
-import type { PromptContentPart, QueueAction, SessionRequestId } from '../../types.ts'
+import type { QueueAction, SessionRequestId } from '../../types.ts'
 import type { ClientResult } from './result.ts'
 import type { PendingSubmissionImage, SessionSnapshot } from './snapshot.ts'
 
+/** Browser-submitted prompt content; the Host promotes image bytes to durable references. */
+export type PromptContentPart =
+  | { readonly type: 'text'; readonly text: string }
+  | {
+    readonly type: 'image'
+    readonly mediaType: ImageMediaType
+    readonly data: string
+    readonly name?: string
+  }
+
 /**
  * Why a local submission echo left the snapshot: `observed` when its durable
  * `user/message` event or host queue occurrence arrived (with the admitted

packages/api/session-controller/src/types.ts

@@ -1,7 +1,7 @@
 /** Browser-safe request, result, and lifecycle vocabulary for the Session Remote service. */
 
 import type {
-  AttachmentIdType, ImageAttachmentLimits, ImageAttachmentRef, ImageMediaType,
+  AttachmentIdType, ImageAttachmentLimits, ImageAttachmentRef, PromptContentPart,
 } from '@deepseek-ai/dsh-attachment'
 import type { Branded } from '@deepseek-ai/dsh-brand'
 import type { MessageId } from '@deepseek-ai/dsh-llm/brand'
@@ -67,15 +67,7 @@ export interface SessionProjectionBaseline {
 export type SessionProjectionValues = Partial<SessionProjectionMap>
   & Readonly<Record<string, SessionProjectionValue>>
 
-/** Browser-submitted prompt content; the Host promotes image bytes to durable references. */
-export type PromptContentPart =
-  | { readonly type: 'text'; readonly text: string }
-  | {
-    readonly type: 'image'
-    readonly mediaType: ImageMediaType
-    readonly data: string
-    readonly name?: string
-  }
+export type { PromptContentPart } from '@deepseek-ai/dsh-attachment'
 
 /** Complete model selection for one Session. */
 export interface ModelSelection {

packages/api/session-controller/tests/client-contract.client.spec.ts

@@ -3,8 +3,8 @@ import type { PromptContentPart as AttachmentPromptContentPart } from '@deepseek
 import {
   MutableSessionEventSource, type SessionLiveEventEntry,
 } from '../src/client/contract/events.ts'
+import type { PromptContentPart as SessionPromptContentPart } from '../src/client/contract/session.ts'
 import { transportResult } from '../src/client/contract/result.ts'
-import type { PromptContentPart as SessionPromptContentPart } from '../src/types.ts'
 
 function entry(seq: number): SessionLiveEventEntry {
   return {