diff --git a/src/renderer/src/lib/resume-sleeping-agent-cross-workspace.test.ts b/src/renderer/src/lib/resume-sleeping-agent-cross-workspace.test.ts
new file mode 100644
index 00000000000..55311860fa2
--- /dev/null
+++ b/src/renderer/src/lib/resume-sleeping-agent-cross-workspace.test.ts
@@ -0,0 +1,118 @@
+import { afterEach, describe, expect, it } from 'vitest'
+import { useAppStore } from '@/store'
+import type { SleepingAgentSessionRecord } from '../../../shared/agent-session-resume'
+import { resumeSleepingAgentSessionsForWorktree } from './resume-sleeping-agent-session'
+
+const initial = useAppStore.getState()
+afterEach(() => useAppStore.setState(initial, true))
+
+function seed(
+  claim: 'status' | 'startup' | 'automatic',
+  options: { foreignHost?: boolean; foreignAccount?: boolean; folder?: boolean } = {}
+) {
+  const worktreeId = 'repo::/one'
+  const otherId = options.folder ? 'folder:two' : 'repo::/two'
+  const record: SleepingAgentSessionRecord = {
+    paneKey: 'old:leaf',
+    tabId: 'old',
+    worktreeId,
+    agent: 'claude',
+    providerSession: {
+      key: 'session_id',
+      id: 'session',
+      transcriptPath: '/account-a/session.jsonl'
+    },
+    prompt: '',
+    state: 'working',
+    origin: 'quit',
+    capturedAt: 1,
+    updatedAt: 1
+  }
+  const providerSession = {
+    ...record.providerSession,
+    ...(options.foreignAccount ? { transcriptPath: '/account-b/session.jsonl' } : {})
+  }
+  const otherHost = options.foreignHost ? 'ssh:other' : 'local'
+  useAppStore.setState({
+    repos: [{ id: 'repo', executionHostId: 'local' }],
+    worktreesByRepo: {
+      repo: [
+        { id: worktreeId, repoId: 'repo', hostId: 'local', path: '/one' },
+        { id: otherId, repoId: 'repo', hostId: otherHost, path: '/two' }
+      ]
+    },
+    folderWorkspaces: options.folder
+      ? [{ id: 'two', projectGroupId: 'group', executionHostId: otherHost }]
+      : [],
+    projectGroups: options.folder ? [{ id: 'group', executionHostId: otherHost }] : [],
+    tabsByWorktree: { [otherId]: [{ id: 'owner', worktreeId: otherId, ptyId: 'live' }] },
+    sleepingAgentSessionsByPaneKey: { [record.paneKey]: record },
+    agentStatusByPaneKey:
+      claim === 'status'
+        ? {
+            'owner:leaf': {
+              paneKey: 'owner:leaf',
+              tabId: 'owner',
+              worktreeId: otherId,
+              agentType: 'claude',
+              providerSession,
+              state: 'working'
+            }
+          }
+        : {},
+    pendingStartupByTabId:
+      claim === 'startup'
+        ? { owner: { launchAgent: 'claude', resumeProviderSession: providerSession } }
+        : {},
+    automaticAgentResumeClaimsByTabId:
+      claim === 'automatic'
+        ? { owner: { worktreeId: otherId, launchAgent: 'claude', providerSession } }
+        : {}
+  } as never)
+  return { record, worktreeId }
+}
+
+describe('sleeping resume claims across workspaces', () => {
+  it.each(['status', 'startup', 'automatic'] as const)(
+    'honors a same-host same-transcript %s claim',
+    (claim) => {
+      const { record, worktreeId } = seed(claim)
+      expect(resumeSleepingAgentSessionsForWorktree(worktreeId)).toBe(0)
+      expect(useAppStore.getState().tabsByWorktree[worktreeId]).toBeUndefined()
+      expect(useAppStore.getState().sleepingAgentSessionsByPaneKey[record.paneKey]).toBeUndefined()
+    }
+  )
+  it.each([{ foreignHost: true }, { foreignAccount: true }])(
+    'does not claim another host or account: %j',
+    (options) => {
+      const { worktreeId } = seed('status', options)
+      expect(resumeSleepingAgentSessionsForWorktree(worktreeId)).toBe(1)
+    }
+  )
+  it('coalesces consecutive worktree sweeps before a queued resume spawns', () => {
+    const { record, worktreeId } = seed('status')
+    const second = { ...record, paneKey: 'second:leaf', tabId: 'second', worktreeId: 'repo::/two' }
+    useAppStore.setState({
+      tabsByWorktree: {},
+      agentStatusByPaneKey: {},
+      sleepingAgentSessionsByPaneKey: { [record.paneKey]: record, [second.paneKey]: second }
+    })
+    expect(resumeSleepingAgentSessionsForWorktree(worktreeId)).toBe(1)
+    expect(resumeSleepingAgentSessionsForWorktree(second.worktreeId)).toBe(0)
+    expect(Object.values(useAppStore.getState().tabsByWorktree).flat()).toHaveLength(1)
+  })
+
+  it('honors a folder workspace owner', () => {
+    const { worktreeId } = seed('status', { folder: true })
+    expect(resumeSleepingAgentSessionsForWorktree(worktreeId)).toBe(0)
+  })
+  it('does not infer an account match from a legacy ID-only record', () => {
+    const { record, worktreeId } = seed('status')
+    useAppStore.setState({
+      sleepingAgentSessionsByPaneKey: {
+        [record.paneKey]: { ...record, providerSession: { key: 'session_id', id: 'session' } }
+      }
+    })
+    expect(resumeSleepingAgentSessionsForWorktree(worktreeId)).toBe(1)
+  })
+})
diff --git a/src/renderer/src/lib/resume-sleeping-agent-session.ts b/src/renderer/src/lib/resume-sleeping-agent-session.ts
index e0b5b79ac6e..ae76c50f967 100644
--- a/src/renderer/src/lib/resume-sleeping-agent-session.ts
+++ b/src/renderer/src/lib/resume-sleeping-agent-session.ts
@@ -1,4 +1,5 @@
 import { useAppStore } from '@/store'
+import { resolveWorktreeOperationRouteResult } from './worktree-operation-route'
 import {
   agentProviderSessionsEqual,
   type SleepingAgentSessionRecord
@@ -88,17 +89,47 @@ function activeOrQueuedResumeClaimsProviderSession(
   state: ReturnType<typeof useAppStore.getState>,
   samePaneOwnsRecovery: boolean
 ): boolean {
-  const worktreeTabIds = new Set(
-    (state.tabsByWorktree[record.worktreeId] ?? []).map((tab) => tab.id)
+  const tabWorktrees = new Map(
+    Object.entries(state.tabsByWorktree).flatMap(([worktreeId, tabs]) =>
+      tabs.map((tab) => [tab.id, worktreeId] as const)
+    )
   )
+  const recordRoute = resolveWorktreeOperationRouteResult(state, record.worktreeId)
+  const matchesScope = (
+    tabId: string,
+    providerSession: SleepingAgentSessionRecord['providerSession'] | undefined
+  ): boolean => {
+    const worktreeId = tabWorktrees.get(tabId)
+    if (!worktreeId) {
+      return false
+    }
+    if (worktreeId === record.worktreeId) {
+      return true
+    }
+    // Across workspaces, the exact transcript supplies the account namespace missing from the ID.
+    if (
+      !record.providerSession.transcriptPath ||
+      providerSession?.transcriptPath !== record.providerSession.transcriptPath
+    ) {
+      return false
+    }
+    const route = resolveWorktreeOperationRouteResult(state, worktreeId)
+    return (
+      recordRoute.kind === 'resolved' &&
+      route.kind === 'resolved' &&
+      recordRoute.route.executionHostId !== null &&
+      recordRoute.route.executionHostId === route.route.executionHostId &&
+      recordRoute.route.runtimeEnvironmentId === route.route.runtimeEnvironmentId
+    )
+  }
   for (const entry of Object.values(state.agentStatusByPaneKey)) {
     // Why: only an owned pane needs its record; hidden/live panes still dedupe by status.
     if (samePaneOwnsRecovery && entry.paneKey === record.paneKey) {
       continue
     }
     if (
-      worktreeTabIds.has(getAgentStatusTabId(entry) ?? '') &&
-      entry.worktreeId === record.worktreeId &&
+      matchesScope(getAgentStatusTabId(entry) ?? '', entry.providerSession) &&
+      entry.worktreeId === tabWorktrees.get(getAgentStatusTabId(entry) ?? '') &&
       entry.agentType === record.agent &&
       entry.state !== 'done' &&
       agentProviderSessionsEqual(record.agent, entry.providerSession, record.providerSession)
@@ -109,7 +140,7 @@ function activeOrQueuedResumeClaimsProviderSession(
 
   for (const [tabId, startup] of Object.entries(state.pendingStartupByTabId)) {
     if (
-      worktreeTabIds.has(tabId) &&
+      matchesScope(tabId, startup.resumeProviderSession) &&
       startup.launchAgent === record.agent &&
       agentProviderSessionsEqual(
         record.agent,
@@ -123,8 +154,8 @@ function activeOrQueuedResumeClaimsProviderSession(
 
   for (const [tabId, claim] of Object.entries(state.automaticAgentResumeClaimsByTabId)) {
     if (
-      worktreeTabIds.has(tabId) &&
-      claim.worktreeId === record.worktreeId &&
+      matchesScope(tabId, claim.providerSession) &&
+      claim.worktreeId === tabWorktrees.get(tabId) &&
       claim.launchAgent === record.agent &&
       agentProviderSessionsEqual(record.agent, claim.providerSession, record.providerSession)
     ) {