fix(web): synchronize subagent navigation state

apps/web/tests/subagent-conversation.e2e.ts

@@ -11,7 +11,8 @@ import {
 import type {} from '@deepseek-ai/dsh-agent'
 import { snapshotSubagentDescriptor } from '@deepseek-ai/dsh-subagent'
 import {
-  captureStableAria, compareOrRefreshGolden, launchWebScaffold, watchConsole,
+  acknowledgeReloadConnectionLoss, captureStableAria, compareOrRefreshGolden,
+  launchWebScaffold, watchConsole,
   webSnapshotMode, type WebScaffold,
 } from './scaffold.ts'
 import { connectFreshWorkspace, saveFailureShot } from './support.ts'
@@ -73,6 +74,7 @@ describe('web e2e: persisted subagent conversation and human continuation', () =
     scaffold = await launchWebScaffold({
       replayFixture: BASE_FIXTURE,
       replayChildFixtures: [childFixturePath],
+      paceMs: 25,
     })
     browser = await chromium.launch()
     page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
@@ -209,7 +211,20 @@ describe('web e2e: persisted subagent conversation and human continuation', () =
         label: NESTED_LABEL, activity: 'inactive', hasChildren: false,
       },
     ])
-    await page.getByRole('button', { name: '2 个子代理' }).waitFor({ timeout: 15_000 })
+    // These two cold fixtures were authored after the page's initial
+    // session.list and intentionally emitted no session-added frame. Reload
+    // to exercise the restart baseline that discovers their full lineage.
+    const warningStart = tripwire.warnings.length
+    await page.reload({ waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    const catalogButton = page.getByRole('button', { name: /个子代理/ })
+    await catalogButton.waitFor({ timeout: 15_000 })
+    await catalogButton.click()
+    const catalogTree = page.getByRole('tree', { name: '子代理会话' })
+    await catalogTree.getByRole('treeitem').nth(1).waitFor({ timeout: 15_000 })
+    await catalogTree.press('Escape')
+    await page.getByRole('button', { name: '3 个子代理' }).waitFor({ timeout: 15_000 })
+    acknowledgeReloadConnectionLoss(tripwire, warningStart)
   }, 120_000)
 
   afterAll(async () => {
@@ -226,7 +241,7 @@ describe('web e2e: persisted subagent conversation and human continuation', () =
 
   it('expands a persisted grandchild progressively without activating either level', async () => {
     onTestFailed(() => saveFailureShot(page, 'web-e2e-subagent-tree'))
-    await page.getByRole('button', { name: '2 个子代理' }).click()
+    await page.getByRole('button', { name: '3 个子代理' }).click()
     expect(await page.getByRole('button', {
       name: `展开 ${ONE_SHOT_LABEL} 的下级子代理`,
     }).count()).toBe(0)
@@ -245,7 +260,7 @@ describe('web e2e: persisted subagent conversation and human continuation', () =
 
   it('opens the completed child from persistence without activating it', async () => {
     onTestFailed(() => saveFailureShot(page, 'web-e2e-subagent-open'))
-    await page.getByRole('button', { name: '2 个子代理' }).click()
+    await page.getByRole('button', { name: '3 个子代理' }).click()
     await page.getByRole('treeitem', { name: new RegExp(LABEL) }).click()
     await expect.poll(
       () => page.getByText(INITIAL_PROMPT, { exact: true }).count(),
@@ -281,7 +296,26 @@ describe('web e2e: persisted subagent conversation and human continuation', () =
     const input = page.getByRole('textbox', { name: 'Message the agent' })
     await input.fill(FOLLOWUP)
     await input.press('Enter')
+    await expect.poll(
+      () => scaffold.ctx.agents.get(childId)?.status,
+      { timeout: 10_000 },
+    ).toBe('running')
+    const hierarchy = page.getByRole('navigation', { name: 'Session hierarchy' })
+    await hierarchy.getByRole('button').first().click()
+    const runningTrigger = page.getByRole('button', { name: '3 个子代理，正在运行' })
+    await runningTrigger.waitFor({ timeout: 10_000 })
+    expect(await runningTrigger.locator('[data-state="ongoing"]').count()).toBe(1)
+    await runningTrigger.click()
+    await page.getByRole('treeitem', {
+      name: new RegExp(`${LABEL}.*正在运行`),
+    }).waitFor({ timeout: 10_000 })
     await ended
+    await page.getByRole('treeitem', {
+      name: new RegExp(`${LABEL}.*当前未运行`),
+    }).waitFor({ timeout: 10_000 })
+    expect(await page.getByRole('button', { name: '3 个子代理' })
+      .locator('[data-state="ongoing"]').count()).toBe(0)
+    await page.getByRole('treeitem', { name: new RegExp(LABEL) }).click()
     await expect.poll(() => page.getByText(FOLLOWUP, { exact: true }).count(), { timeout: 10_000 }).toBe(1)
     await expect.poll(() => scaffold.ctx.agents.get(childId), { timeout: 10_000 }).toBeUndefined()
     expect(await page.getByRole('button', { name: 'Stop generating' }).count()).toBe(0)
@@ -318,7 +352,7 @@ describe('web e2e: persisted subagent conversation and human continuation', () =
       .getByRole('treeitem')
       .last()
     await parentSession.click()
-    await page.getByRole('button', { name: '2 个子代理' }).click()
+    await page.getByRole('button', { name: '3 个子代理' }).click()
     await page.getByRole('treeitem', { name: new RegExp(ONE_SHOT_LABEL) }).click()
     await page.getByText('一次性任务不支持后续消息，可在这里查看完整执行记录。').waitFor()
     expect(scaffold.ctx.agents.get(oneShotId)).toBeUndefined()
@@ -329,7 +363,7 @@ describe('web e2e: persisted subagent conversation and human continuation', () =
     await page.getByRole('tree', { name: 'Sessions' })
       .getByRole('treeitem', { name: /Ask a research subagent to/ })
       .click()
-    await page.getByRole('button', { name: '2 个子代理' }).click()
+    await page.getByRole('button', { name: '3 个子代理' }).click()
     await page.getByRole('treeitem', { name: new RegExp(LABEL) }).click()
     await page.getByRole('textbox', { name: 'Message the agent' }).waitFor()
     const forkResponse = page.waitForResponse(response =>
@@ -355,7 +389,7 @@ describe('web e2e: persisted subagent conversation and human continuation', () =
     onTestFailed(() => saveFailureShot(page, 'web-e2e-subagent-post-fork-followup'))
     const sessions = page.getByRole('tree', { name: 'Sessions' })
     await sessions.getByRole('treeitem', { name: /Ask a research subagent to/ }).click()
-    await page.getByRole('button', { name: '2 个子代理' }).click()
+    await page.getByRole('button', { name: '3 个子代理' }).click()
     await page.getByRole('treeitem', { name: new RegExp(LABEL) }).click()
     await page.locator('textarea:enabled').first().waitFor()
     expect(scaffold.ctx.agents.get(childId)).toBeUndefined()
@@ -372,7 +406,7 @@ describe('web e2e: persisted subagent conversation and human continuation', () =
     await expect.poll(() => scaffold.ctx.agents.get(forkId)).not.toBeUndefined()
 
     await sessions.getByRole('treeitem', { name: /Ask a research subagent to/ }).click()
-    await page.getByRole('button', { name: '2 个子代理' }).click()
+    await page.getByRole('button', { name: '3 个子代理' }).click()
     await page.getByRole('treeitem', { name: new RegExp(LABEL) }).click()
     const input = page.locator('textarea:enabled').first()
     await input.waitFor()