Sessions: restore managed Sessions resumed before the creation listener was installed

tests/runtime.spec.ts

@@ -1711,6 +1711,25 @@ it('selects its own preset again for a main Session or worker a person switched
   await expect(presets.select.mock.results[0]!.value).rejects.toMatchObject({ code: 'agent-preset/locked' })
 })
 
+it('restores sessions that DSH resumed while setup was running, before its creation listener existed', async () => {
+  const { sessionId } = await acceptedTicket()
+  const worker = agents.get(sessionId)!
+  const sessionTools = tools.get(sessionId)!
+  controller.create.mockClear()
+  // `restart()` keeps the same live agents (DSH's registry is not torn down with the plugin), exactly the state where a
+  // Web UI resumed this worker during setup: no new `agent/created` will arrive. Stopping the old Runtime disposes its
+  // registrations; clear the fixture's observations so only a restore can put them back.
+  sections.clear(); restricts.clear(); guards.clear()
+  runtime = await restart()
+  await runtime.ready
+  expect(sessionTools.has('orchestrator_report')).toBe(true)
+  expect(sections.get(sessionId)!.text({}).includes('dsh-superagent prompt revision')).toBe(true)
+  expect(restricts.get(sessionId)).toBeDefined()
+  // Decoration was restored in place on the already-live agent; the Session was never recreated.
+  expect(agents.get(sessionId)).toBe(worker)
+  expect(controller.create).not.toHaveBeenCalledWith(expect.objectContaining({ sessionId }))
+})
+
 it('gives a subagent of a worker only the worker\'s work tools, and none once the ticket ended', async () => {
   const { ticket, sessionId } = await acceptedTicket()
   // DSH creates the subagent under the standard preset, with the worker's Session as its parent.