diff --git a/src/renderer/src/components/settings/RepositoryHostSetupsSection.tsx b/src/renderer/src/components/settings/RepositoryHostSetupsSection.tsx
index f91d183bebb..9fa983138bf 100644
--- a/src/renderer/src/components/settings/RepositoryHostSetupsSection.tsx
+++ b/src/renderer/src/components/settings/RepositoryHostSetupsSection.tsx
@@ -2,6 +2,7 @@ import { useMemo, useState } from 'react'
 import {
   getExecutionHostLabel,
   parseExecutionHostId,
+  toRuntimeExecutionHostId,
   type ExecutionHostId
 } from '../../../../shared/execution-host'
 import { buildExecutionHostRegistry } from '../../../../shared/execution-host-registry'
@@ -24,6 +25,10 @@ import {
   selectRuntimeAwareSshStatus,
   selectRuntimeAwareSshTargetLabel
 } from '@/store/slices/runtime-environment-ssh'
+import {
+  isConnectedRuntimeHostState,
+  runtimeHostConnectionState
+} from '@/runtime/runtime-host-connection-state'
 
 type RepositoryHostSetupsSectionProps = {
   repo: Repo
@@ -215,9 +220,27 @@ export function RepositoryHostSetupsSection({
           const runtimeOwnerEnvironmentId =
             setup.runtimeOwnerEnvironmentId?.trim() ||
             (transportHost?.kind === 'runtime' ? transportHost.environmentId : null)
+          // Why: share one host-health derivation with the status bar so a degraded
+          // owner can never read "Ready" here and "Connected"/"Disconnected" there.
+          const runtimeOwnerStatusEntry = runtimeOwnerEnvironmentId
+            ? runtimeStatusByEnvironmentId.get(runtimeOwnerEnvironmentId)
+            : undefined
+          const runtimeOwnerState = runtimeOwnerEnvironmentId
+            ? runtimeHostConnectionState({
+                hasStatusEntry: Boolean(runtimeOwnerStatusEntry),
+                status: runtimeOwnerStatusEntry?.status
+              })
+            : null
           const runtimeOwnerReachable =
-            !runtimeOwnerEnvironmentId ||
-            Boolean(runtimeStatusByEnvironmentId.get(runtimeOwnerEnvironmentId)?.status)
+            runtimeOwnerState === null || isConnectedRuntimeHostState(runtimeOwnerState)
+          const runtimeOwnerWorkspaceWindowClosed = runtimeOwnerState === 'workspace-window-closed'
+          const runtimeOwnerHostId = runtimeOwnerEnvironmentId
+            ? toRuntimeExecutionHostId(runtimeOwnerEnvironmentId)
+            : null
+          const runtimeOwnerHostLabel = runtimeOwnerHostId
+            ? (hostOptionById.get(runtimeOwnerHostId)?.label ??
+              getExecutionHostLabel(runtimeOwnerHostId))
+            : ''
           const nestedSshStatus =
             runtimeOwnerEnvironmentId && executionHost?.kind === 'ssh'
               ? selectRuntimeAwareSshStatus(
@@ -236,20 +259,26 @@ export function RepositoryHostSetupsSection({
           const setupReady =
             setup.setupState === 'ready' &&
             runtimeOwnerReachable &&
+            !runtimeOwnerWorkspaceWindowClosed &&
             (nestedSshStatus === undefined || nestedSshStatus === 'connected')
           const setupStateLabel = !runtimeOwnerReachable
             ? translate(
                 'auto.components.settings.RepositoryPane.hostStateDisconnected',
                 'Disconnected'
               )
-            : nestedSshStatus === null
-              ? translate('auto.components.settings.RepositoryPane.hostStateUnknown', 'Unknown')
-              : nestedSshStatus !== undefined && nestedSshStatus !== 'connected'
-                ? translate(
-                    'auto.components.settings.RepositoryPane.hostStateDisconnected',
-                    'Disconnected'
-                  )
-                : getSetupStateLabel(setup.setupState)
+            : runtimeOwnerWorkspaceWindowClosed
+              ? translate(
+                  'auto.components.settings.RepositoryPane.hostStateWorkspaceWindowClosed',
+                  'Workspace window closed'
+                )
+              : nestedSshStatus === null
+                ? translate('auto.components.settings.RepositoryPane.hostStateUnknown', 'Unknown')
+                : nestedSshStatus !== undefined && nestedSshStatus !== 'connected'
+                  ? translate(
+                      'auto.components.settings.RepositoryPane.hostStateDisconnected',
+                      'Disconnected'
+                    )
+                  : getSetupStateLabel(setup.setupState)
           const setupHostLabel =
             runtimeOwnerEnvironmentId && executionHost?.kind === 'ssh'
               ? translate(
@@ -299,6 +328,17 @@ export function RepositoryHostSetupsSection({
                       'Path pending'
                     )}
                 </p>
+                {runtimeOwnerWorkspaceWindowClosed ? (
+                  // Why: no runtime RPC can open a remote desktop window, so the only
+                  // honest affordance is telling the user what to do on that host.
+                  <p className="mt-1 text-[11px] text-muted-foreground">
+                    {translate(
+                      'auto.components.settings.RepositoryPane.hostWorkspaceWindowClosedHelp',
+                      'The server is reachable but its Orca window is closed. Open Orca on {{value0}} to use this setup.',
+                      { value0: runtimeOwnerHostLabel }
+                    )}
+                  </p>
+                ) : null}
               </div>
               {isCurrentSetup ? (
                 <SettingsBadge>
diff --git a/src/renderer/src/components/settings/RepositoryHostSetupsSection.workspace-window.test.tsx b/src/renderer/src/components/settings/RepositoryHostSetupsSection.workspace-window.test.tsx
new file mode 100644
index 00000000000..81cdefa0a55
--- /dev/null
+++ b/src/renderer/src/components/settings/RepositoryHostSetupsSection.workspace-window.test.tsx
@@ -0,0 +1,156 @@
+// @vitest-environment happy-dom
+
+import React, { act } from 'react'
+import { createRoot, type Root } from 'react-dom/client'
+import { afterEach, beforeEach, describe, expect, it } from 'vitest'
+import {
+  PROJECT_HOST_SETUP_RUNTIME_CAPABILITY,
+  RUNTIME_PROTOCOL_VERSION,
+  WORKSPACE_RUN_CONTEXT_RUNTIME_CAPABILITY
+} from '../../../../shared/protocol-version'
+import type { RuntimeStatus } from '../../../../shared/runtime-types'
+import type { Project, ProjectHostSetup, Repo } from '../../../../shared/types'
+import { useAppStore } from '../../store'
+import { RepositoryHostSetupsSection } from './RepositoryHostSetupsSection'
+
+let container: HTMLDivElement
+let root: Root
+
+const repo: Repo = {
+  id: 'remote-repo',
+  displayName: 'Orca',
+  path: '/srv/orca',
+  badgeColor: '#737373',
+  addedAt: 100,
+  kind: 'git',
+  executionHostId: 'runtime:hub'
+}
+const project: Project = {
+  id: 'github:stablyai/orca',
+  displayName: 'Orca',
+  badgeColor: '#737373',
+  sourceRepoIds: [repo.id],
+  createdAt: 100,
+  updatedAt: 100
+}
+const setup: ProjectHostSetup = {
+  id: 'hub-setup',
+  projectId: project.id,
+  repoId: repo.id,
+  hostId: 'runtime:hub',
+  runtimeOwnerEnvironmentId: 'hub',
+  path: repo.path,
+  displayName: repo.displayName,
+  kind: 'git',
+  setupState: 'ready',
+  setupMethod: 'legacy-repo',
+  createdAt: 100,
+  updatedAt: 100
+}
+
+function makeStatus(overrides: Partial<RuntimeStatus>): RuntimeStatus {
+  return {
+    runtimeId: 'runtime-hub',
+    rendererGraphEpoch: 1,
+    graphStatus: 'ready',
+    authoritativeWindowId: 1,
+    desktopWindowStatus: 'available',
+    liveTabCount: 0,
+    liveLeafCount: 0,
+    runtimeProtocolVersion: RUNTIME_PROTOCOL_VERSION,
+    minCompatibleRuntimeClientVersion: 1,
+    capabilities: [PROJECT_HOST_SETUP_RUNTIME_CAPABILITY, WORKSPACE_RUN_CONTEXT_RUNTIME_CAPABILITY],
+    ...overrides
+  }
+}
+
+function renderWithOwnerStatus(status: RuntimeStatus | null): void {
+  useAppStore.setState({
+    repos: [repo],
+    projects: [project],
+    projectHostSetups: [setup],
+    runtimeStatusByEnvironmentId: new Map([['hub', { checkedAt: 1, appVersion: '1.8.0', status }]])
+  })
+  act(() => {
+    root.render(
+      React.createElement(RepositoryHostSetupsSection, {
+        repo,
+        forceVisible: true,
+        searchQuery: '',
+        searchEntries: []
+      })
+    )
+  })
+}
+
+beforeEach(() => {
+  useAppStore.setState(useAppStore.getInitialState(), true)
+  container = document.createElement('div')
+  document.body.appendChild(container)
+  root = createRoot(container)
+})
+
+afterEach(() => {
+  act(() => {
+    root.unmount()
+  })
+  container.remove()
+  useAppStore.setState(useAppStore.getInitialState(), true)
+})
+
+// Why: #12350 — a reachable remote server whose renderer graph is gone still
+// answered status.get, so every setup it owned read "Ready".
+describe('RepositoryHostSetupsSection workspace window availability', () => {
+  it('flags a reachable runtime owner whose workspace window is closed instead of Ready', () => {
+    renderWithOwnerStatus(
+      makeStatus({
+        graphStatus: 'unavailable',
+        authoritativeWindowId: null,
+        desktopWindowStatus: 'openable'
+      })
+    )
+
+    const currentSetup = container.querySelector('[data-current="true"]')
+    expect(currentSetup?.textContent).toContain('Workspace window closed')
+    expect(currentSetup?.textContent).not.toContain('Ready')
+    // The host is reachable — this must not be reported as a lost connection.
+    expect(container.textContent).not.toContain('Disconnected')
+    expect(container.textContent).toContain('Open Orca on')
+  })
+
+  it('keeps a graph-ready runtime owner Ready when it reports no desktop window', () => {
+    // Why: headless `orca serve` (#6844) owns a ready graph with an openable
+    // desktop window — the degraded check must not widen into a renderer requirement.
+    renderWithOwnerStatus(makeStatus({ graphStatus: 'ready', desktopWindowStatus: 'openable' }))
+
+    expect(container.textContent).toContain('Ready')
+    expect(container.textContent).not.toContain('Workspace window closed')
+    expect(container.textContent).not.toContain('Disconnected')
+  })
+
+  it('keeps an unreachable runtime owner disconnected', () => {
+    renderWithOwnerStatus(null)
+
+    expect(container.textContent).toContain('Disconnected')
+    expect(container.textContent).not.toContain('Workspace window closed')
+  })
+
+  it('does not call a setup Ready when the owner control channel closed with an error', () => {
+    renderWithOwnerStatus(
+      makeStatus({
+        remoteControl: {
+          state: 'closed',
+          pendingRequestCount: 0,
+          subscriptionCount: 0,
+          reconnectAttempt: 0,
+          lastConnectedAt: null,
+          lastClose: null,
+          lastError: 'Connection closed'
+        }
+      })
+    )
+
+    expect(container.textContent).toContain('Disconnected')
+    expect(container.textContent).not.toContain('Workspace window closed')
+  })
+})
diff --git a/src/renderer/src/components/status-bar/RuntimeHostStatusRow.test.tsx b/src/renderer/src/components/status-bar/RuntimeHostStatusRow.test.tsx
index 46803ebde03..34aedf06b9b 100644
--- a/src/renderer/src/components/status-bar/RuntimeHostStatusRow.test.tsx
+++ b/src/renderer/src/components/status-bar/RuntimeHostStatusRow.test.tsx
@@ -30,6 +30,35 @@ describe('RuntimeHostStatusRow', () => {
     expect(markup).toContain('Connect')
   })
 
+  it('names the closed workspace window while keeping the disconnect action', () => {
+    const markup = renderToStaticMarkup(
+      <RuntimeHostStatusRow
+        label="Dev Box"
+        state="workspace-window-closed"
+        onConnect={async () => {}}
+        onDisconnect={async () => {}}
+      />
+    )
+
+    expect(markup).toContain('Dev Box')
+    expect(markup).toContain('Workspace window closed')
+    expect(markup).toContain('Disconnect')
+    expect(markup).not.toContain('>Connect</button>')
+    // The host is still reachable — the row must not read as a lost connection.
+    expect(markup).not.toContain('Disconnected')
+    // Why: proves the row routes the action to onDisconnect — with only a connect
+    // handler there is nothing to offer, so no button renders.
+    expect(
+      renderToStaticMarkup(
+        <RuntimeHostStatusRow
+          label="Dev Box"
+          state="workspace-window-closed"
+          onConnect={async () => {}}
+        />
+      )
+    ).not.toContain('<button')
+  })
+
   it('renders connected hosts with a disconnect action', () => {
     const markup = renderToStaticMarkup(
       <RuntimeHostStatusRow label="Dev Box" state="connected" onDisconnect={async () => {}} />
diff --git a/src/renderer/src/components/status-bar/RuntimeHostStatusRow.tsx b/src/renderer/src/components/status-bar/RuntimeHostStatusRow.tsx
index 3b5019f4719..3e7e8488f74 100644
--- a/src/renderer/src/components/status-bar/RuntimeHostStatusRow.tsx
+++ b/src/renderer/src/components/status-bar/RuntimeHostStatusRow.tsx
@@ -2,13 +2,20 @@ import { useCallback, useState } from 'react'
 import { Loader2 } from 'lucide-react'
 import { translate } from '@/i18n/i18n'
 import { useMountedRef } from '@/hooks/useMountedRef'
-
-export type RuntimeHostConnectionState = 'connected' | 'checking' | 'reconnecting' | 'disconnected'
+import {
+  isConnectedRuntimeHostState,
+  type RuntimeHostConnectionState
+} from '@/runtime/runtime-host-connection-state'
 
 function runtimeStatusLabel(state: RuntimeHostConnectionState): string {
   switch (state) {
     case 'connected':
       return translate('auto.components.status.bar.SshStatusSegment.runtime_online', 'Connected')
+    case 'workspace-window-closed':
+      return translate(
+        'auto.components.status.bar.SshStatusSegment.runtime_workspace_window_closed',
+        'Workspace window closed'
+      )
     case 'checking':
       return translate('auto.components.status.bar.SshStatusSegment.runtime_checking', 'Checking')
     case 'reconnecting':
@@ -28,6 +35,7 @@ function runtimeDotColor(state: RuntimeHostConnectionState): string {
   switch (state) {
     case 'connected':
       return 'bg-emerald-500'
+    case 'workspace-window-closed':
     case 'checking':
     case 'reconnecting':
       return 'bg-yellow-500'
@@ -37,7 +45,7 @@ function runtimeDotColor(state: RuntimeHostConnectionState): string {
 }
 
 function runtimeStatusTone(state: RuntimeHostConnectionState): string {
-  if (state === 'checking' || state === 'reconnecting') {
+  if (state === 'checking' || state === 'reconnecting' || state === 'workspace-window-closed') {
     return 'text-yellow-500'
   }
   return 'text-muted-foreground'
@@ -46,6 +54,7 @@ function runtimeStatusTone(state: RuntimeHostConnectionState): string {
 function runtimeActionLabel(state: RuntimeHostConnectionState): string | null {
   switch (state) {
     case 'connected':
+    case 'workspace-window-closed':
       return translate('auto.components.status.bar.SshStatusSegment.59b553e2aa', 'Disconnect')
     case 'disconnected':
       return translate('auto.components.status.bar.SshStatusSegment.63f36455cc', 'Connect')
@@ -73,7 +82,7 @@ export function RuntimeHostStatusRow({
   const actionLabel = runtimeActionLabel(state)
 
   const handleAction = useCallback(async () => {
-    const action = state === 'connected' ? onDisconnect : onConnect
+    const action = isConnectedRuntimeHostState(state) ? onDisconnect : onConnect
     if (!action) {
       return
     }
@@ -116,7 +125,7 @@ export function RuntimeHostStatusRow({
       </div>
       {busy ? (
         <Loader2 className="size-3 shrink-0 animate-spin text-muted-foreground" />
-      ) : actionLabel && (state === 'connected' ? onDisconnect : onConnect) ? (
+      ) : actionLabel && (isConnectedRuntimeHostState(state) ? onDisconnect : onConnect) ? (
         <button
           type="button"
           onClick={() => void handleAction()}
diff --git a/src/renderer/src/components/status-bar/SshStatusSegment.test.ts b/src/renderer/src/components/status-bar/SshStatusSegment.test.ts
index 406de54c6f6..c6fa99fe1ea 100644
--- a/src/renderer/src/components/status-bar/SshStatusSegment.test.ts
+++ b/src/renderer/src/components/status-bar/SshStatusSegment.test.ts
@@ -1,25 +1,5 @@
 import { describe, expect, it, vi } from 'vitest'
-import {
-  connectRuntimeHostForNavigation,
-  isConnectedRuntimeHostState,
-  runtimeStatusForOverall
-} from './SshStatusSegment'
-
-describe('SshStatusSegment host status helpers', () => {
-  it('counts connected remote servers as connected hosts', () => {
-    // Why: "connected" = attached/reachable (active-agnostic), matching Settings.
-    // There is no separate "available" state — a reachable host is just Connected.
-    expect(runtimeStatusForOverall('connected')).toBe('connected')
-    expect(isConnectedRuntimeHostState('connected')).toBe(true)
-  })
-
-  it('keeps reconnecting and disconnected remote servers out of the connected count', () => {
-    expect(runtimeStatusForOverall('reconnecting')).toBe('connecting')
-    expect(runtimeStatusForOverall('disconnected')).toBe('disconnected')
-    expect(isConnectedRuntimeHostState('reconnecting')).toBe(false)
-    expect(isConnectedRuntimeHostState('disconnected')).toBe(false)
-  })
-})
+import { connectRuntimeHostForNavigation } from './SshStatusSegment'
 
 describe('connectRuntimeHostForNavigation', () => {
   it('loads the transient host catalog without writing Active Server', async () => {
diff --git a/src/renderer/src/components/status-bar/SshStatusSegment.tsx b/src/renderer/src/components/status-bar/SshStatusSegment.tsx
index fc417d679f1..570ebaec162 100644
--- a/src/renderer/src/components/status-bar/SshStatusSegment.tsx
+++ b/src/renderer/src/components/status-bar/SshStatusSegment.tsx
@@ -17,134 +17,25 @@ import {
   toRuntimeExecutionHostId
 } from '../../../../shared/execution-host'
 import { isUserManagedRuntimeEnvironment } from '../../../../shared/runtime-environments'
-import { RuntimeHostStatusRow, type RuntimeHostConnectionState } from './RuntimeHostStatusRow'
+import { RuntimeHostStatusRow } from './RuntimeHostStatusRow'
 import {
   connectedHostCountLabel,
   connectingHostsLabel,
   workspaceSyncProblemLabel
 } from './ssh-status-segment-copy'
 import { SshTargetStatusRow } from './SshTargetStatusRow'
-import type { RemoteRuntimeSharedConnectionDiagnostics } from '../../../../shared/remote-runtime-shared-control-types'
 import { connectRuntimeEnvironmentAndRecordStatus } from './runtime-environment-explicit-connect'
-import { isConnectingSshStatus } from '@/ssh/ssh-connection-recoverability'
-
-type HostStatus = 'connected' | 'disconnected' | 'connecting'
-
-function overallStatus(
-  statuses: HostStatus[]
-): 'connected' | 'partial' | 'disconnected' | 'connecting' {
-  if (statuses.length === 0) {
-    return 'disconnected'
-  }
-  if (statuses.every((s) => s === 'connected')) {
-    return 'connected'
-  }
-  if (statuses.some((s) => s === 'connecting')) {
-    return 'connecting'
-  }
-  if (statuses.some((s) => s === 'connected')) {
-    return 'partial'
-  }
-  return 'disconnected'
-}
-
-function overallDotColor(
-  status: 'connected' | 'partial' | 'disconnected' | 'connecting',
-  connectedCount: number
-): string {
-  switch (status) {
-    case 'connected':
-      return 'bg-emerald-500'
-    case 'partial':
-      return connectedCount > 0 ? 'bg-emerald-500' : 'bg-muted-foreground/40'
-    case 'connecting':
-      return 'bg-yellow-500'
-    case 'disconnected':
-      return 'bg-muted-foreground/40'
-  }
-}
-
-function sshStatusForOverall(status: SshConnectionStatus): HostStatus {
-  if (status === 'connected') {
-    return 'connected'
-  }
-  return isConnectingSshStatus(status) ? 'connecting' : 'disconnected'
-}
-
-function runtimeHostConnectionState({
-  hasStatus,
-  online,
-  remoteControl
-}: {
-  hasStatus: boolean
-  online: boolean
-  remoteControl?: RemoteRuntimeSharedConnectionDiagnostics | null
-}): RuntimeHostConnectionState {
-  if (!hasStatus) {
-    return 'checking'
-  }
-  if (remoteControl?.state === 'reconnecting') {
-    return 'reconnecting'
-  }
-  if (!online) {
-    return 'disconnected'
-  }
-  if (remoteControl?.state === 'closed' && remoteControl.lastError) {
-    return 'disconnected'
-  }
-  // Why: "connected" means attached/reachable, NOT "is the active default host".
-  // Both surfaces (this status bar and Settings > Remote Orca Servers) must agree
-  // on that single definition, or a reachable-but-not-active host reads
-  // "Connected" in one place and "Available" in the other. Active/default is a
-  // separate concept (surfaced elsewhere), so it must not change this state.
-  return 'connected'
-}
-
-function runtimeHostConnectionDetail(
-  remoteControl?: RemoteRuntimeSharedConnectionDiagnostics | null
-): string | undefined {
-  if (!remoteControl) {
-    return undefined
-  }
-  if (remoteControl.lastError) {
-    return remoteControl.lastError
-  }
-  if (remoteControl.lastClose?.reason) {
-    return translate(
-      'auto.components.status.bar.SshStatusSegment.runtime_last_close_reason',
-      'Closed: {{value0}}',
-      { value0: remoteControl.lastClose.reason }
-    )
-  }
-  if (remoteControl.state === 'reconnecting') {
-    return translate(
-      'auto.components.status.bar.SshStatusSegment.runtime_reconnect_attempt',
-      'Attempt {{value0}}',
-      { value0: String(remoteControl.reconnectAttempt + 1) }
-    )
-  }
-  // Why: pending-request / subscription counts are internal RPC plumbing (e.g. a
-  // live browser screencast shows as "N streams"). They're noise in a user-facing
-  // status row and make the line truncate — only surface actionable detail
-  // (errors, close reasons, reconnect attempts) above.
-  return undefined
-}
-
-export function runtimeStatusForOverall(state: RuntimeHostConnectionState): HostStatus {
-  switch (state) {
-    case 'connected':
-      return 'connected'
-    case 'checking':
-    case 'reconnecting':
-      return 'connecting'
-    case 'disconnected':
-      return 'disconnected'
-  }
-}
-
-export function isConnectedRuntimeHostState(state: RuntimeHostConnectionState): boolean {
-  return state === 'connected'
-}
+import {
+  overallDotColor,
+  overallStatus,
+  runtimeHostConnectionDetail,
+  sshStatusForOverall
+} from './remote-host-connection-status'
+import {
+  isConnectedRuntimeHostState,
+  runtimeHostConnectionState,
+  runtimeStatusForOverall
+} from '@/runtime/runtime-host-connection-state'
 
 export async function connectRuntimeHostForNavigation(args: {
   environmentId: string
@@ -205,8 +96,8 @@ export function SshStatusSegment({
       return {
         id: environment.id,
         label: override || environment.name || environment.id,
-        hasStatus: Boolean(statusEntry),
-        online: Boolean(statusEntry?.status),
+        hasStatusEntry: Boolean(statusEntry),
+        status: statusEntry?.status ?? null,
         active: settings?.activeRuntimeEnvironmentId === environment.id,
         remoteControl: statusEntry?.status?.remoteControl ?? null
       }
diff --git a/src/renderer/src/components/status-bar/remote-host-connection-status.ts b/src/renderer/src/components/status-bar/remote-host-connection-status.ts
new file mode 100644
index 00000000000..1694dbd596c
--- /dev/null
+++ b/src/renderer/src/components/status-bar/remote-host-connection-status.ts
@@ -0,0 +1,76 @@
+import { translate } from '@/i18n/i18n'
+import type { SshConnectionStatus } from '../../../../shared/ssh-types'
+import type { RemoteRuntimeSharedConnectionDiagnostics } from '../../../../shared/remote-runtime-shared-control-types'
+import type { HostStatus } from '@/runtime/runtime-host-connection-state'
+import { isConnectingSshStatus } from '@/ssh/ssh-connection-recoverability'
+
+export function overallStatus(
+  statuses: HostStatus[]
+): 'connected' | 'partial' | 'disconnected' | 'connecting' {
+  if (statuses.length === 0) {
+    return 'disconnected'
+  }
+  if (statuses.every((s) => s === 'connected')) {
+    return 'connected'
+  }
+  if (statuses.some((s) => s === 'connecting')) {
+    return 'connecting'
+  }
+  if (statuses.some((s) => s === 'connected')) {
+    return 'partial'
+  }
+  return 'disconnected'
+}
+
+export function overallDotColor(
+  status: 'connected' | 'partial' | 'disconnected' | 'connecting',
+  connectedCount: number
+): string {
+  switch (status) {
+    case 'connected':
+      return 'bg-emerald-500'
+    case 'partial':
+      return connectedCount > 0 ? 'bg-emerald-500' : 'bg-muted-foreground/40'
+    case 'connecting':
+      return 'bg-yellow-500'
+    case 'disconnected':
+      return 'bg-muted-foreground/40'
+  }
+}
+
+export function sshStatusForOverall(status: SshConnectionStatus): HostStatus {
+  if (status === 'connected') {
+    return 'connected'
+  }
+  return isConnectingSshStatus(status) ? 'connecting' : 'disconnected'
+}
+
+export function runtimeHostConnectionDetail(
+  remoteControl?: RemoteRuntimeSharedConnectionDiagnostics | null
+): string | undefined {
+  if (!remoteControl) {
+    return undefined
+  }
+  if (remoteControl.lastError) {
+    return remoteControl.lastError
+  }
+  if (remoteControl.lastClose?.reason) {
+    return translate(
+      'auto.components.status.bar.SshStatusSegment.runtime_last_close_reason',
+      'Closed: {{value0}}',
+      { value0: remoteControl.lastClose.reason }
+    )
+  }
+  if (remoteControl.state === 'reconnecting') {
+    return translate(
+      'auto.components.status.bar.SshStatusSegment.runtime_reconnect_attempt',
+      'Attempt {{value0}}',
+      { value0: String(remoteControl.reconnectAttempt + 1) }
+    )
+  }
+  // Why: pending-request / subscription counts are internal RPC plumbing (e.g. a
+  // live browser screencast shows as "N streams"). They're noise in a user-facing
+  // status row and make the line truncate — only surface actionable detail
+  // (errors, close reasons, reconnect attempts) above.
+  return undefined
+}
diff --git a/src/renderer/src/i18n/locales/en.json b/src/renderer/src/i18n/locales/en.json
index 9c854c238ba..2cf7f05ee1b 100644
--- a/src/renderer/src/i18n/locales/en.json
+++ b/src/renderer/src/i18n/locales/en.json
@@ -3279,6 +3279,7 @@
             "runtime_reconnecting": "Reconnecting",
             "runtime_last_close_reason": "Closed: {{value0}}",
             "runtime_reconnect_attempt": "Attempt {{value0}}",
+            "runtime_workspace_window_closed": "Workspace window closed",
             "connectedHostCount_one": "{{count}} host",
             "connectedHostCount_other": "{{count}} hosts",
             "connecting": "Connecting…",
@@ -6860,7 +6861,9 @@
           "projectRuntimeDescription": "Choose whether this project runs on Windows or WSL.",
           "hostStateDisconnected": "Disconnected",
           "hostStateUnknown": "Unknown",
-          "nestedHostLabel": "{{value0}} via {{value1}}"
+          "nestedHostLabel": "{{value0}} via {{value1}}",
+          "hostStateWorkspaceWindowClosed": "Workspace window closed",
+          "hostWorkspaceWindowClosedHelp": "The server is reachable but its Orca window is closed. Open Orca on {{value0}} to use this setup."
         },
         "RepositorySourceControlAiActionRows": {
           "548a6e1281": "Command template",
diff --git a/src/renderer/src/runtime/runtime-host-connection-state.test.ts b/src/renderer/src/runtime/runtime-host-connection-state.test.ts
new file mode 100644
index 00000000000..17acb2395bb
--- /dev/null
+++ b/src/renderer/src/runtime/runtime-host-connection-state.test.ts
@@ -0,0 +1,100 @@
+import { describe, expect, it } from 'vitest'
+import type { RuntimeStatus } from '../../../shared/runtime-types'
+import {
+  isConnectedRuntimeHostState,
+  runtimeHostConnectionState,
+  runtimeStatusForOverall
+} from './runtime-host-connection-state'
+
+function makeStatus(overrides: Partial<RuntimeStatus> = {}): RuntimeStatus {
+  return {
+    runtimeId: 'runtime-hub',
+    rendererGraphEpoch: 1,
+    graphStatus: 'ready',
+    authoritativeWindowId: 1,
+    desktopWindowStatus: 'available',
+    liveTabCount: 0,
+    liveLeafCount: 0,
+    ...overrides
+  }
+}
+
+const windowClosedStatus = makeStatus({
+  graphStatus: 'unavailable',
+  authoritativeWindowId: null,
+  desktopWindowStatus: 'openable'
+})
+
+describe('runtime host connection state', () => {
+  it('counts connected remote servers as connected hosts', () => {
+    // Why: "connected" = attached/reachable (active-agnostic), matching Settings.
+    // There is no separate "available" state — a reachable host is just Connected.
+    expect(runtimeStatusForOverall('connected')).toBe('connected')
+    expect(isConnectedRuntimeHostState('connected')).toBe(true)
+  })
+
+  it('keeps reconnecting and disconnected remote servers out of the connected count', () => {
+    expect(runtimeStatusForOverall('reconnecting')).toBe('connecting')
+    expect(runtimeStatusForOverall('disconnected')).toBe('disconnected')
+    expect(isConnectedRuntimeHostState('reconnecting')).toBe(false)
+    expect(isConnectedRuntimeHostState('disconnected')).toBe(false)
+  })
+
+  it('still counts a workspace-window-closed remote server as a connected host', () => {
+    // Why: the transport is healthy, so demoting it to disconnected would be a lie
+    // in the other direction — only the wording changes (#12350).
+    expect(runtimeStatusForOverall('workspace-window-closed')).toBe('connected')
+    expect(isConnectedRuntimeHostState('workspace-window-closed')).toBe(true)
+  })
+
+  it('distinguishes a reachable host whose workspace window is closed', () => {
+    expect(runtimeHostConnectionState({ hasStatusEntry: true, status: windowClosedStatus })).toBe(
+      'workspace-window-closed'
+    )
+    expect(runtimeHostConnectionState({ hasStatusEntry: true, status: makeStatus() })).toBe(
+      'connected'
+    )
+  })
+
+  it('keeps transport failures ahead of a closed workspace window', () => {
+    expect(runtimeHostConnectionState({ hasStatusEntry: false, status: null })).toBe('checking')
+    expect(runtimeHostConnectionState({ hasStatusEntry: true, status: null })).toBe('disconnected')
+    expect(
+      runtimeHostConnectionState({
+        hasStatusEntry: true,
+        status: {
+          ...windowClosedStatus,
+          remoteControl: {
+            state: 'reconnecting',
+            pendingRequestCount: 0,
+            subscriptionCount: 0,
+            reconnectAttempt: 0,
+            lastConnectedAt: null,
+            lastClose: null,
+            lastError: null
+          }
+        }
+      })
+    ).toBe('reconnecting')
+  })
+
+  it('does not hide a closed control channel behind workspace-window diagnostics', () => {
+    expect(
+      runtimeHostConnectionState({
+        hasStatusEntry: true,
+        status: {
+          ...windowClosedStatus,
+          remoteControl: {
+            state: 'closed',
+            pendingRequestCount: 0,
+            subscriptionCount: 0,
+            reconnectAttempt: 0,
+            lastConnectedAt: null,
+            lastClose: null,
+            lastError: 'Connection closed'
+          }
+        }
+      })
+    ).toBe('disconnected')
+  })
+})
diff --git a/src/renderer/src/runtime/runtime-host-connection-state.ts b/src/renderer/src/runtime/runtime-host-connection-state.ts
new file mode 100644
index 00000000000..6b3f97bd778
--- /dev/null
+++ b/src/renderer/src/runtime/runtime-host-connection-state.ts
@@ -0,0 +1,66 @@
+import type { RuntimeStatus } from '../../../shared/runtime-types'
+import { isRuntimeWorkspaceWindowClosed } from '../../../shared/runtime-workspace-window-availability'
+
+export type HostStatus = 'connected' | 'disconnected' | 'connecting'
+
+// Why: 'workspace-window-closed' is a reachable host that cannot serve graph-backed
+// work — connected for counting purposes, but not interchangeable with 'connected'.
+export type RuntimeHostConnectionState =
+  | 'connected'
+  | 'workspace-window-closed'
+  | 'checking'
+  | 'reconnecting'
+  | 'disconnected'
+
+// Why: one derivation for every host surface (status bar + Settings > Available Hosts),
+// so a degraded host can never read "Connected" in one place and "Ready" in the other.
+export function runtimeHostConnectionState({
+  hasStatusEntry,
+  status
+}: {
+  hasStatusEntry: boolean
+  status: RuntimeStatus | null | undefined
+}): RuntimeHostConnectionState {
+  if (!hasStatusEntry) {
+    return 'checking'
+  }
+  const remoteControl = status?.remoteControl
+  if (remoteControl?.state === 'reconnecting') {
+    return 'reconnecting'
+  }
+  if (!status) {
+    return 'disconnected'
+  }
+  if (remoteControl?.state === 'closed' && remoteControl.lastError) {
+    return 'disconnected'
+  }
+  // Why: reachable but graph-less — the transport is fine, so this is not a network
+  // disconnect, but calling it "Connected" hides that nothing will run there.
+  if (isRuntimeWorkspaceWindowClosed(status)) {
+    return 'workspace-window-closed'
+  }
+  // Why: "connected" means attached/reachable, NOT "is the active default host".
+  // Both surfaces must agree on that single definition, or a reachable-but-not-active
+  // host reads "Connected" in one place and "Available" in the other. Active/default is
+  // a separate concept (surfaced elsewhere), so it must not change this state.
+  return 'connected'
+}
+
+export function runtimeStatusForOverall(state: RuntimeHostConnectionState): HostStatus {
+  switch (state) {
+    // Why: a closed workspace window is a degraded host, not a lost connection —
+    // it must keep counting toward the connected-host total.
+    case 'connected':
+    case 'workspace-window-closed':
+      return 'connected'
+    case 'checking':
+    case 'reconnecting':
+      return 'connecting'
+    case 'disconnected':
+      return 'disconnected'
+  }
+}
+
+export function isConnectedRuntimeHostState(state: RuntimeHostConnectionState): boolean {
+  return state === 'connected' || state === 'workspace-window-closed'
+}
diff --git a/src/shared/runtime-workspace-window-availability.test.ts b/src/shared/runtime-workspace-window-availability.test.ts
new file mode 100644
index 00000000000..9eb37db77da
--- /dev/null
+++ b/src/shared/runtime-workspace-window-availability.test.ts
@@ -0,0 +1,76 @@
+import { describe, expect, it } from 'vitest'
+import type { RuntimeStatus } from './runtime-types'
+import { isRuntimeWorkspaceWindowClosed } from './runtime-workspace-window-availability'
+
+function makeStatus(overrides: Partial<RuntimeStatus>): RuntimeStatus {
+  return {
+    runtimeId: 'runtime-hub',
+    rendererGraphEpoch: 1,
+    graphStatus: 'ready',
+    authoritativeWindowId: 1,
+    liveTabCount: 0,
+    liveLeafCount: 0,
+    ...overrides
+  }
+}
+
+describe('isRuntimeWorkspaceWindowClosed', () => {
+  it('flags a reachable host whose graph is gone but whose desktop window can be opened', () => {
+    expect(
+      isRuntimeWorkspaceWindowClosed(
+        makeStatus({
+          graphStatus: 'unavailable',
+          authoritativeWindowId: null,
+          desktopWindowStatus: 'openable'
+        })
+      )
+    ).toBe(true)
+  })
+
+  it('leaves graph-ready headless servers alone', () => {
+    // Why: #6844 headless serve owns a graph without a desktop window — it must
+    // never read as degraded just because a window could be opened.
+    expect(
+      isRuntimeWorkspaceWindowClosed(
+        makeStatus({ graphStatus: 'ready', desktopWindowStatus: 'openable' })
+      )
+    ).toBe(false)
+  })
+
+  it('ignores a renderer reload that still owns its window', () => {
+    expect(
+      isRuntimeWorkspaceWindowClosed(
+        makeStatus({ graphStatus: 'reloading', desktopWindowStatus: 'available' })
+      )
+    ).toBe(false)
+  })
+
+  it('flags a reload whose window disappeared before the graph was marked unavailable', () => {
+    // Why: 'openable' already means no live renderer window, so a mid-reload window
+    // teardown is just as unusable as 'unavailable'.
+    expect(
+      isRuntimeWorkspaceWindowClosed(
+        makeStatus({ graphStatus: 'reloading', desktopWindowStatus: 'openable' })
+      )
+    ).toBe(true)
+  })
+
+  it('treats a missing desktop window claim as no claim', () => {
+    expect(isRuntimeWorkspaceWindowClosed(makeStatus({ graphStatus: 'unavailable' }))).toBe(false)
+    expect(
+      isRuntimeWorkspaceWindowClosed(
+        makeStatus({ graphStatus: 'unavailable', desktopWindowStatus: 'initializing' })
+      )
+    ).toBe(false)
+    expect(
+      isRuntimeWorkspaceWindowClosed(
+        makeStatus({ graphStatus: 'unavailable', desktopWindowStatus: 'blocked' })
+      )
+    ).toBe(false)
+  })
+
+  it('is not a substitute for an unreachable host', () => {
+    expect(isRuntimeWorkspaceWindowClosed(null)).toBe(false)
+    expect(isRuntimeWorkspaceWindowClosed(undefined)).toBe(false)
+  })
+})
diff --git a/src/shared/runtime-workspace-window-availability.ts b/src/shared/runtime-workspace-window-availability.ts
new file mode 100644
index 00000000000..1a40903e768
--- /dev/null
+++ b/src/shared/runtime-workspace-window-availability.ts
@@ -0,0 +1,14 @@
+import type { RuntimeStatus } from './runtime-types'
+
+// Why: a headed Orca server keeps answering status.get after its workspace window
+// closes, so "a status came back" is not evidence that graph-backed workspace work
+// will succeed there. desktopWindowStatus is only 'openable' when no live renderer
+// window exists (orca-runtime.ts:4806), so pairing it with a non-ready graph is the
+// narrow "reachable, but nothing can run" signal: a graph-ready headless serve
+// (#6844) and hosts that omit desktopWindowStatus (older builds) stay untouched.
+export function isRuntimeWorkspaceWindowClosed(status: RuntimeStatus | null | undefined): boolean {
+  if (!status) {
+    return false
+  }
+  return status.graphStatus !== 'ready' && status.desktopWindowStatus === 'openable'
+}