chore(cloud): mobile switch exhaustiveness; extract the read-panel hook

mobile/src/cloud/CloudReadSnapshotSection.tsx

@@ -226,6 +226,8 @@ function prChecksLabel(pr: ReadSnapshotPr, t: Translate): string | null {
     case 'pending':
     case 'running':
       return t('cloud.snapshot.checks.pending', 'Checks running')
+    // No status, or one this build doesn't name: the VM's own summary line, if any.
+    case undefined:
     default:
       return pr.checksSummary
   }

mobile/src/cloud/cloud-workspace-copy.ts

@@ -37,7 +37,9 @@ export function attachErrorMessage(
           'cloud.error.pairing',
           'The workspace is running, but this phone couldn’t connect to it. Your files are safe.'
         )
-      default:
+      case 'not_found':
+        return t('cloud.workspace.missing', 'This workspace is gone or you no longer have access.')
+      case 'failed':
         return t(
           'cloud.error.failed',
           'The workspace couldn’t start. Try again, or open it on your desktop.'
@@ -128,6 +130,9 @@ export function cloudPromptErrorMessage(code: string | undefined, t: Translate):
       return t('cloud.prompt.errorNotConnected', 'This phone couldn’t reach the workspace')
     case 'cloud_agent_unknown':
       return t('cloud.prompt.errorAgent', 'That agent isn’t installed in this workspace')
+    // An older queue entry may carry no code: it failed to launch all the same.
+    case undefined:
+    case 'launch_failed':
     default:
       return t('cloud.prompt.errorLaunch', 'The agent didn’t start')
   }

src/renderer/src/components/cloud-workspaces/CloudWorkspacesHome.tsx

@@ -1,6 +1,6 @@
 // Home: the org's cloud workspaces (registry on the control plane), filterable by who owns them,
 // which repo they are in, Mine/Team and archived, grouped by section, with live presence and cost.
-import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react'
+import React, { useCallback, useEffect, useMemo, useState } from 'react'
 import { toast } from 'sonner'
 import { useAppStore } from '@/store'
 import { useIntlLocale, useTranslate } from '@/i18n/use-translate'
@@ -18,7 +18,7 @@ import { ANY, CloudWorkspacesToolbar, type CloudWorkspacesFilters } from './Clou
 import { EmptyState, ErrorState, NewSectionDialog, SkeletonRows } from './CloudWorkspacesStates'
 import { CloudWorkspaceConfirmDialog, type PendingConfirm } from './CloudWorkspaceConfirmDialog'
 import { CloudReadSnapshotSheet } from './CloudReadSnapshotSheet'
-import type { CloudReadWake } from '../orca-cloud/read-snapshot/CloudReadSnapshotView'
+import { useCloudReadPanel } from './use-cloud-read-panel'
 import { formatSandboxHours, sandboxHours, type MemberDirectory } from './cloud-workspace-format'
 import { refreshCloudMessageSenders } from '@/lib/cloud-message-sender'
 import { describeError } from './cloud-workspace-errors'
@@ -87,22 +87,7 @@ export function CloudWorkspacesHome({
   const [now, setNow] = useState(() => Date.now())
   const [sectionFor, setSectionFor] = useState<CloudWorkspace | null>(null)
   const [confirm, setConfirm] = useState<PendingConfirm | null>(null)
-  // The Asleep workspace whose read-only copy is open (never wakes it).
-  const [readingId, setReadingIdState] = useState<string | null>(null)
-  // A wake started from the read panel: shown there (elapsed, slow, failed) until it opens.
-  const [readWake, setReadWake] = useState<CloudReadWake | null>(null)
-  const readingRef = useRef<string | null>(null)
-  const setReadingId = useCallback(
-    (next: string | null | ((id: string | null) => string | null)) => {
-      const value = typeof next === 'function' ? next(readingRef.current) : next
-      if (value !== readingRef.current) {
-        setReadWake(null)
-      }
-      readingRef.current = value
-      setReadingIdState(value)
-    },
-    []
-  )
+  const { readingId, readingRef, setReadingId, readWake, setReadWake } = useCloudReadPanel()
   const signIn = useAppStore((s) => s.connectCurrentOrcaProfile)
   const scope = orgId ? filters.scope : 'mine'
   const { state, stale, reading, refresh, replace } = useCloudWorkspaces(
@@ -210,7 +195,7 @@ export function CloudWorkspacesHome({
         setOpening((current) => (current === w.id ? null : current))
       }
     },
-    [setReadingId]
+    [readingRef, setReadWake, setReadingId]
   )
 
   const patch = useCallback(

src/renderer/src/components/cloud-workspaces/use-cloud-read-panel.ts

@@ -0,0 +1,24 @@
+import { useCallback, useRef, useState } from 'react'
+import type { CloudReadWake } from '../orca-cloud/read-snapshot/CloudReadSnapshotView'
+
+/**
+ * The Asleep workspace whose read-only copy is open (opening it never wakes it), plus a wake
+ * started from that panel, shown there (elapsed, slow, failed) until the workspace opens.
+ */
+export function useCloudReadPanel() {
+  const [readingId, setReadingIdState] = useState<string | null>(null)
+  const [readWake, setReadWake] = useState<CloudReadWake | null>(null)
+  const readingRef = useRef<string | null>(null)
+  const setReadingId = useCallback(
+    (next: string | null | ((id: string | null) => string | null)) => {
+      const value = typeof next === 'function' ? next(readingRef.current) : next
+      if (value !== readingRef.current) {
+        setReadWake(null)
+      }
+      readingRef.current = value
+      setReadingIdState(value)
+    },
+    []
+  )
+  return { readingId, readingRef, setReadingId, readWake, setReadWake }
+}