fix(codex): contain detached restart cleanup

src/renderer/src/components/terminal-pane/codex-detached-pane-restart-scheduler.ts

@@ -70,10 +70,14 @@ function scheduleClaimSweep(): void {
   const generation = executorGeneration
   // Exact mounted-owner checks fence the claim; a microtask only exits the store write.
   queueMicrotask(() => {
-    sweepQueued = false
     if (!executorInstalled || executorGeneration !== generation) {
       return
     }
+    sweepQueued = false
+    if (sweepRunning) {
+      sweepRequestedAfterRun = true
+      return
+    }
     sweepRunning = true
     void sweepUnclaimedCodexPaneRestarts().finally(() => {
       sweepRunning = false

src/renderer/src/components/terminal-pane/codex-detached-pane-restart.test.ts

@@ -395,6 +395,7 @@ describe('codex detached pane restart executor', () => {
       command: 'codex',
       launchAgent: 'codex'
     })
+    expect(useAppStore.getState().suppressedPtyExitIds[OLD_PTY]).toBeUndefined()
     pendingKill.resolve()
     await restart
   })

src/renderer/src/components/terminal-pane/codex-detached-pane-restart.ts

@@ -160,12 +160,13 @@ async function executeDetachedCodexPaneRestart(
       reopenCurrentCodexRestartPrompt(located, ptyId)
       return
     }
-    const killPromise = killReplacedCodexPanePty(ptyId)
     const store = useAppStore.getState()
+    store.suppressPtyExit(ptyId)
     store.clearTabPtyId(located.tab.id, ptyId)
+    store.consumeSuppressedPtyExit(ptyId)
     store.queueTabStartupCommand(located.tab.id, { ...CODEX_ACCOUNT_RESTART_STARTUP })
     store.clearCodexRestartNotice(ptyId)
-    await killPromise
+    await killReplacedCodexPanePty(ptyId)
     return
   }
   const { worktreeId, tab, leafId } = located
@@ -310,7 +311,6 @@ async function killReplacedCodexPanePty(ptyId: string): Promise<void> {
   // Why the disposal: a parked tab's exit sidecar treats any exit as the pane
   // dying — it would collapse the just-rebound leaf or close the whole tab.
   disposeParkedTerminalWatchersForPtyIds([ptyId])
-  useAppStore.getState().suppressPtyExit(ptyId)
   for (const snapshot of unregisterPtyDataHandlers([ptyId])) {
     snapshot.commit()
   }
@@ -322,6 +322,4 @@ async function killReplacedCodexPanePty(ptyId: string): Promise<void> {
     console.warn('[codex-restart] failed to kill replaced Codex pane PTY:', err)
   }
   discardPreHandlerPtyState(ptyId)
-  // No exit consumer remains after the watcher/handler disposal above.
-  useAppStore.getState().consumeSuppressedPtyExit(ptyId)
 }