diff --git a/src/renderer/src/lib/orca-cloud/cloud-web-host-launch-hold.test.ts b/src/renderer/src/lib/orca-cloud/cloud-web-host-launch-hold.test.ts
index cb05f020493..6fe08328ee5 100644
--- a/src/renderer/src/lib/orca-cloud/cloud-web-host-launch-hold.test.ts
+++ b/src/renderer/src/lib/orca-cloud/cloud-web-host-launch-hold.test.ts
@@ -291,6 +291,8 @@ describe('NOACCT-MISLABEL: no Claude account is a setup hold, never "didn’t st
     const { toast } = await import('sonner')
     vi.mocked(toast).mockClear()
     useAppStore.setState({
+      activeView: 'terminal',
+      activeWorktreeId: 'w1',
       tabsByWorktree: {
         w1: [makeTerminalTab({ id: toWebTerminalSurfaceTabId('h1'), worktreeId: 'w1' })]
       }
@@ -302,4 +304,30 @@ describe('NOACCT-MISLABEL: no Claude account is a setup hold, never "didn’t st
     await result
     expect(toast).toHaveBeenCalledWith('The agent didn’t start. The shell is still open.')
   })
+
+  it('never confirms a cancel over another workspace or Settings (N-03)', async () => {
+    const { useAppStore } = await import('@/store')
+    const { makeTerminalTab } = await import('@/store/terminals/terminal-row.test-fixture')
+    const { toast } = await import('sonner')
+    const tabs = {
+      w1: [makeTerminalTab({ id: toWebTerminalSurfaceTabId('h1'), worktreeId: 'w1' })]
+    }
+    const cancelHold = async (): Promise<void> => {
+      setOrcaCloudAgentAccountsStateForTest(accounts({ state: 'none' }))
+      const result = createWithCloudAgentHold(CREATE_AGENT, hostCreate())
+      await flush()
+      releaseCloudAgentHold(cloudTabHoldKey(toWebTerminalSurfaceTabId('h1')), 'cancel')
+      await result
+    }
+    vi.mocked(toast).mockClear()
+    useAppStore.setState({
+      activeView: 'terminal',
+      activeWorktreeId: 'other',
+      tabsByWorktree: tabs
+    })
+    await cancelHold()
+    useAppStore.setState({ activeView: 'settings', activeWorktreeId: 'w1', tabsByWorktree: tabs })
+    await cancelHold()
+    expect(toast).not.toHaveBeenCalled()
+  })
 })
diff --git a/src/renderer/src/lib/orca-cloud/cloud-web-host-launch-hold.ts b/src/renderer/src/lib/orca-cloud/cloud-web-host-launch-hold.ts
index 9b1430224f6..23f9b36a471 100644
--- a/src/renderer/src/lib/orca-cloud/cloud-web-host-launch-hold.ts
+++ b/src/renderer/src/lib/orca-cloud/cloud-web-host-launch-hold.ts
@@ -83,7 +83,8 @@ export async function createWithCloudAgentHold(
     // NOACCT-MISLABEL: the confirmation answers the person's own Cancel, while the shell is still
     // there. A hold that ended because its tab or workspace went away (deleted, archived, closed)
     // says nothing: there is no shell left, and nothing failed to start.
-    if (isTabOpen(args.worktreeId, tabId)) {
+    // Defense in depth (N-03): only over its own workspace, never over another one or Settings.
+    if (isTabOpen(args.worktreeId, tabId) && workspaceOnScreen(args.worktreeId)) {
       toast(
         translate(
           'agentSignInStrip.cancelledToast',
@@ -122,6 +123,12 @@ export function isTabOpen(worktreeId: string, tabId: string): boolean {
   return (useAppStore.getState().tabsByWorktree[worktreeId] ?? []).some((tab) => tab.id === tabId)
 }
 
+/** The workspace is the one in front, in the workspace view (not Settings or another page). */
+function workspaceOnScreen(worktreeId: string): boolean {
+  const state = useAppStore.getState()
+  return state.activeView === 'terminal' && state.activeWorktreeId === worktreeId
+}
+
 // The agent's tab can reach the store after the placeholder's close (a create's sync is slower).
 const AGENT_TAB_FOCUS_WAIT_MS = 10_000