diff --git a/packages/client/ui-conversation/tests/diff-card.spec.tsx b/packages/client/ui-conversation/tests/diff-card.spec.tsx
index 8744e6b802..1722b9628e 100644
--- a/packages/client/ui-conversation/tests/diff-card.spec.tsx
+++ b/packages/client/ui-conversation/tests/diff-card.spec.tsx
@@ -156,6 +156,8 @@ describe('FileMutationRow diff card', () => {
     byId: { [SID]: { id: SID, displayTitle: 'r', running: false, blank: false, waitingApproval: false, updatedAt: 0, cwd: '/w/app' } },
     current: SID,
     phase: 'ready',
+    subagentsByParent: {},
+    currentAddress: undefined,
   })
 
   const rowProps = (block: RunningToolCall | ToolResultNode, toolName = 'edit'): FileMutationRowProps => ({
@@ -301,12 +303,14 @@ describe('DetailsPanel diff Output section', () => {
     const chat = createChatStore().create()
     if (selection !== null) chat.actions.select(selection)
     const sessions = createSnapshotStore<SessionListState>(cwd === undefined
-      ? { ids: [], byId: {}, current: undefined, phase: 'ready' }
+      ? { ids: [], byId: {}, current: undefined, phase: 'ready', subagentsByParent: {}, currentAddress: undefined }
       : {
         ids: [SID],
         byId: { [SID]: { id: SID, displayTitle: 'r', running: false, blank: false, waitingApproval: false, updatedAt: 0, cwd } },
         current: SID,
         phase: 'ready',
+        subagentsByParent: {},
+        currentAddress: undefined,
       })
     const workspaces = createSnapshotStore<WorkspaceListState>({
       items: [], archivedSessionIds: [], state: 'idle', phase: 'ready', error: null,
@@ -334,7 +338,7 @@ describe('DetailsPanel diff Output section', () => {
       sessionId: SID, nodes: [], partial: null, runningCalls: [], codeDispatches: new Map(),
       pending: [], queue: [], running: false, composerPhase: 'active', removed: false,
       openState: 'open', openError: null, hasMore: false, loadingOlder: false,
-      promptError: null, blank: false, lastAgentError: null, ...over,
+      promptError: null, blank: false, subagent: null, lastAgentError: null, ...over,
     }
   }
 
diff --git a/packages/client/ui-conversation/tests/read-card.spec.tsx b/packages/client/ui-conversation/tests/read-card.spec.tsx
index b8c08a2bb6..700c8c3d75 100644
--- a/packages/client/ui-conversation/tests/read-card.spec.tsx
+++ b/packages/client/ui-conversation/tests/read-card.spec.tsx
@@ -170,6 +170,8 @@ describe('ReadRow keyed toolview', () => {
     byId: { [SID]: { id: SID, displayTitle: 'r', running: false, blank: false, waitingApproval: false, updatedAt: 0, cwd: '/w/app' } },
     current: SID,
     phase: 'ready',
+    subagentsByParent: {},
+    currentAddress: undefined,
   })
 
   const rowProps = (block: RunningToolCall | ToolResultNode): Parameters<typeof ReadRow>[0] => ({
@@ -249,12 +251,14 @@ describe('DetailsPanel Output section (read)', () => {
     const chat = createChatStore().create()
     if (selection !== null) chat.actions.select(selection)
     const sessions = createSnapshotStore<SessionListState>(cwd === undefined
-      ? { ids: [], byId: {}, current: undefined, phase: 'ready' }
+      ? { ids: [], byId: {}, current: undefined, phase: 'ready', subagentsByParent: {}, currentAddress: undefined }
       : {
         ids: [SID],
         byId: { [SID]: { id: SID, displayTitle: 'r', running: false, blank: false, waitingApproval: false, updatedAt: 0, cwd } },
         current: SID,
         phase: 'ready',
+        subagentsByParent: {},
+        currentAddress: undefined,
       })
     const workspaces = createSnapshotStore<WorkspaceListState>({
       items: [], archivedSessionIds: [], state: 'idle', phase: 'ready', error: null,
@@ -282,7 +286,7 @@ describe('DetailsPanel Output section (read)', () => {
       sessionId: SID, nodes: [], partial: null, runningCalls: [], codeDispatches: new Map(),
       pending: [], queue: [], running: false, composerPhase: 'active', removed: false,
       openState: 'open', openError: null, hasMore: false, loadingOlder: false,
-      promptError: null, blank: false, lastAgentError: null, ...over,
+      promptError: null, blank: false, subagent: null, lastAgentError: null, ...over,
     }
   }
 
diff --git a/packages/client/ui-conversation/tests/search-card.spec.tsx b/packages/client/ui-conversation/tests/search-card.spec.tsx
index 75114ae9a2..b4306d064d 100644
--- a/packages/client/ui-conversation/tests/search-card.spec.tsx
+++ b/packages/client/ui-conversation/tests/search-card.spec.tsx
@@ -370,7 +370,10 @@ describe('DetailsPanel Output section (search)', () => {
     localStorage.clear()
     const chat = createChatStore().create()
     if (selection !== null) chat.actions.select(selection)
-    const sessions = createSnapshotStore<SessionListState>({ ids: [], byId: {}, current: undefined, phase: 'ready' })
+    const sessions = createSnapshotStore<SessionListState>({
+      ids: [], byId: {}, current: undefined, phase: 'ready',
+      subagentsByParent: {}, currentAddress: undefined,
+    })
     const workspaces = createSnapshotStore<WorkspaceListState>({
       items: [], archivedSessionIds: [], state: 'idle', phase: 'ready', error: null,
       baselinesReady: true, recentWorkspaceId: undefined,
@@ -397,7 +400,7 @@ describe('DetailsPanel Output section (search)', () => {
       sessionId: SID, nodes: [], partial: null, runningCalls: [], codeDispatches: new Map(),
       pending: [], queue: [], running: false, composerPhase: 'active', removed: false,
       openState: 'open', openError: null, hasMore: false, loadingOlder: false,
-      promptError: null, blank: false, lastAgentError: null, ...over,
+      promptError: null, blank: false, subagent: null, lastAgentError: null, ...over,
     }
   }
 
diff --git a/packages/client/ui-conversation/tests/terminal-card.spec.tsx b/packages/client/ui-conversation/tests/terminal-card.spec.tsx
index a8473e7762..2ae268debd 100644
--- a/packages/client/ui-conversation/tests/terminal-card.spec.tsx
+++ b/packages/client/ui-conversation/tests/terminal-card.spec.tsx
@@ -345,6 +345,8 @@ describe('BashRow terminal card', () => {
     byId: { [SID]: { id: SID, displayTitle: 'r', running: false, blank: false, waitingApproval: false, updatedAt: 0 } },
     current: undefined,
     phase: 'ready',
+    subagentsByParent: {},
+    currentAddress: undefined,
   })
 
   const rowProps = (block: RunningToolCall | ToolResultNode): BashRowProps => ({
@@ -421,12 +423,14 @@ describe('DetailsPanel Output section', () => {
     const chat = createChatStore().create()
     if (selection !== null) chat.actions.select(selection)
     const sessions = createSnapshotStore<SessionListState>(cwd === undefined
-      ? { ids: [], byId: {}, current: undefined, phase: 'ready' }
+      ? { ids: [], byId: {}, current: undefined, phase: 'ready', subagentsByParent: {}, currentAddress: undefined }
       : {
         ids: [SID],
         byId: { [SID]: { id: SID, displayTitle: 'r', running: false, blank: false, waitingApproval: false, updatedAt: 0, cwd } },
         current: SID,
         phase: 'ready',
+        subagentsByParent: {},
+        currentAddress: undefined,
       })
     const workspaces = createSnapshotStore<WorkspaceListState>({
       items: [], archivedSessionIds: [], state: 'idle', phase: 'ready', error: null,
@@ -454,7 +458,7 @@ describe('DetailsPanel Output section', () => {
       sessionId: SID, nodes: [], partial: null, runningCalls: [], codeDispatches: new Map(),
       pending: [], queue: [], running: false, composerPhase: 'active', removed: false,
       openState: 'open', openError: null, hasMore: false, loadingOlder: false,
-      promptError: null, blank: false, lastAgentError: null, ...over,
+      promptError: null, blank: false, subagent: null, lastAgentError: null, ...over,
     }
   }
 
@@ -605,7 +609,10 @@ describe('DetailsPanel Output section', () => {
         sessionId={SID}
         useSession={bindSnapshotSelector({ getSnapshot: () => snap, subscribe: () => () => {} })}
         useSessions={bindSnapshotSelector(createSnapshotStore<SessionListState>(
-          { ids: [], byId: {}, current: undefined, phase: 'ready' }))}
+          {
+            ids: [], byId: {}, current: undefined, phase: 'ready',
+            subagentsByParent: {}, currentAddress: undefined,
+          }))}
         useWorkspaces={bindSnapshotSelector(createSnapshotStore<WorkspaceListState>({
           items: [], archivedSessionIds: [], state: 'idle', phase: 'ready', error: null,
           baselinesReady: true, recentWorkspaceId: undefined,
diff --git a/packages/client/ui-conversation/tests/web-card.spec.tsx b/packages/client/ui-conversation/tests/web-card.spec.tsx
index 42dc729e41..a60c16f77c 100644
--- a/packages/client/ui-conversation/tests/web-card.spec.tsx
+++ b/packages/client/ui-conversation/tests/web-card.spec.tsx
@@ -205,7 +205,10 @@ describe('DetailsPanel web Output section', () => {
     localStorage.clear()
     const chat = createChatStore().create()
     if (selection !== null) chat.actions.select(selection)
-    const sessions = createSnapshotStore<SessionListState>({ ids: [], byId: {}, current: undefined, phase: 'ready' })
+    const sessions = createSnapshotStore<SessionListState>({
+      ids: [], byId: {}, current: undefined, phase: 'ready',
+      subagentsByParent: {}, currentAddress: undefined,
+    })
     const workspaces = createSnapshotStore<WorkspaceListState>({
       items: [], archivedSessionIds: [], state: 'idle', phase: 'ready', error: null,
       baselinesReady: true, recentWorkspaceId: undefined,
@@ -232,7 +235,7 @@ describe('DetailsPanel web Output section', () => {
       sessionId: SID, nodes: [], partial: null, runningCalls: [], codeDispatches: new Map(),
       pending: [], queue: [], running: false, composerPhase: 'active', removed: false,
       openState: 'open', openError: null, hasMore: false, loadingOlder: false,
-      promptError: null, blank: false, lastAgentError: null, ...over,
+      promptError: null, blank: false, subagent: null, lastAgentError: null, ...over,
     }
   }