feat(client-runtime): add target-owned conversation snapshots

packages/client/test-runtime/src/fixtures.ts

@@ -2,7 +2,9 @@
 import type {
   ConversationSnapshot, ISession, SessionId, SessionSummary, WorkspaceListState,
 } from '@deepseek-ai/dsh-client-runtime/client'
-import { EMPTY_CHAT_SNAPSHOT } from '@deepseek-ai/dsh-client-runtime/client'
+import {
+  EMPTY_CHAT_SNAPSHOT, EMPTY_CONVERSATION_VIEWS,
+} from '@deepseek-ai/dsh-client-runtime/client'
 
 /**
  * Fixture overrides for the session behavior face: any subset of the
@@ -46,6 +48,7 @@ export interface SessionFixture {
 export function conversationSnapshot(sessionId: SessionId): ConversationSnapshot {
   return {
     sessionId,
+    views: EMPTY_CONVERSATION_VIEWS,
     chat: EMPTY_CHAT_SNAPSHOT,
     nodes: [],
     turnTimings: new Map(),