Merge remote-tracking branch 'origin/master' into worktree/charming-swartz-83bf33

# Conflicts: # apps/web/tests/models-settings.e2e.ts # docs/config-catalog.md # packages/client/ui-models/README.i18n.yaml # packages/client/ui-models/README.md # packages/client/ui-models/README.zh.md # packages/client/ui-models/src/client/ProviderEditor.tsx # packages/client/ui-models/tests/provider-form.spec.tsx # packages/llm/llm-deepseek/README.i18n.yaml # packages/llm/llm-deepseek/README.md # packages/llm/llm-deepseek/README.zh.md # packages/llm/llm-deepseek/src/index.ts
2026-08-07 14:12:17 +08:00
parent 0823a3484a b767ad02e0
commit d5c5e7f2e9
139 changed files with 4826 additions and 583 deletions
--- a/apps/web/tests/chat-scroll-contract.e2e.ts
+++ b/apps/web/tests/chat-scroll-contract.e2e.ts
@@ -40,6 +40,11 @@ const LIVE_TOOL_FIRST = 'CHAT_SCROLL_TOOL_STREAM_FIRST'
 const LIVE_TOOL_DONE = 'CHAT_SCROLL_TOOL_STREAM_DONE'
 const TOOL_READY_FILE = '.chat-scroll-tool-ready'
 const TOOL_RELEASE_FILE = '.chat-scroll-tool-release'
+const INPUTS_SESSION_ID = 'chat-scroll-inputs-e2e'
+const FLING_SESSION_ID = 'chat-scroll-fling-e2e'
+const LIVE_FLING_PROMPT = 'CHAT_SCROLL_FLING_USER Keep streaming while I fling back through older output.'
+const LIVE_FLING_FIRST = 'CHAT_SCROLL_FLING_STREAM_FIRST'
+const LIVE_FLING_DONE = 'CHAT_SCROLL_FLING_STREAM_DONE'

 const HISTORY_FIXTURE = createChatScrollFixture({
  markerPrefix: 'HISTORY',
@@ -58,6 +63,10 @@ const RESTORE_FIXTURE_B = createChatScrollFixture({
  title: 'CHAT_SCROLL_RESTORE_B comparison session',
  turns: 32,
 })
+const INPUTS_FIXTURE = createChatScrollFixture({
+  markerPrefix: 'INPUTS',
+  title: 'CHAT_SCROLL_INPUTS non-wheel reader input session',
+})

 interface ScrollGeometry {
  readonly distanceFromBottom: number
@@ -273,6 +282,34 @@ async function wheelTranscript(page: Page, deltaY: number): Promise<void> {
  await nextPaint(page)
 }

+/**
+ * Touch-style momentum fling over the transcript. Headless Chromium in the
+ * test lane cannot synthesize device scrolling (Input.synthesizeScrollGesture
+ * and Input.dispatchTouchEvent both deliver DOM events without moving any
+ * scroller, and compositor scrollbars ignore synthetic mouse input), so the
+ * fling replays the signature a real pan leaves on the scrollport: per-frame
+ * decaying displacements the component never authored, carrying no wheel
+ * events. Wheel-sign semantics: positive deltaY reads downward.
+ */
+async function flingTranscript(page: Page, deltaY: number): Promise<void> {
+  await page.locator('[data-conversation-scroll]').evaluate(async (host, delta) => {
+    const direction = Math.sign(delta)
+    let remaining = Math.abs(delta)
+    // Fast launch decaying toward a floor speed, like a released finger. The
+    // floor stays above the follow threshold so contended frames (streaming
+    // writes racing the fling) still deviate far enough to read as input.
+    let velocity = Math.max(120, remaining / 8)
+    while (remaining > 0) {
+      const step = Math.min(velocity, remaining)
+      host.scrollTop += direction * step
+      remaining -= step
+      velocity = Math.max(48, velocity * 0.9)
+      await new Promise<void>(resolve => requestAnimationFrame(() => { resolve() }))
+    }
+  }, deltaY)
+  await nextPaint(page)
+}
+
 async function wheelToHistoryStart(page: Page): Promise<void> {
  for (let attempt = 0; attempt < 12; attempt += 1) {
    if ((await scrollGeometry(page)).scrollTop <= 1) break
@@ -683,4 +720,112 @@ describe('web e2e: long Chat scroll contract', () => {
      assertClean(world)
    })
  }, 180_000)
+
+  // Keyboard is the only non-wheel device this lane's Chromium can drive for
+  // real (see flingTranscript for the probe results on touch and scrollbars),
+  // so it stands in for the whole hardware input pipeline here.
+  it.skipIf(MODE === 'record')('keyboard paging owns bottom-follow without wheel input', async () => {
+    await withScrollWorld({
+      failureShot: 'web-e2e-chat-scroll-keyboard',
+      seeds: [{ fixture: INPUTS_FIXTURE, id: INPUTS_SESSION_ID }],
+    }, async (world) => {
+      await openSeed(
+        world.page,
+        INPUTS_FIXTURE,
+        INPUTS_FIXTURE.markers.assistant(INPUTS_FIXTURE.turns),
+      )
+      await expectBottom(world.page)
+      const backToBottom = world.page.getByRole('button', { name: 'Back to bottom', exact: true })
+
+      // Focus rides the last seeded tool row (a tabbable button whose keydown
+      // handler passes scrolling keys through). End first normalizes the
+      // focus-driven scrollIntoView back to the floor.
+      const lastToolRow = world.page.locator(
+        `[data-chat-call-id="chat-scroll-${String(INPUTS_FIXTURE.turns).padStart(3, '0')}-1"] [data-sample="bash"]`,
+      )
+      await lastToolRow.focus()
+      await world.page.keyboard.press('End')
+      await expectBottom(world.page)
+      await expect.poll(() => backToBottom.count(), { timeout: 10_000 }).toBe(0)
+      for (let press = 0; press < 3; press += 1) {
+        await world.page.keyboard.press('PageUp')
+        await nextPaint(world.page)
+      }
+      await backToBottom.waitFor({ timeout: 10_000 })
+      await expect.poll(async () => (await scrollGeometry(world.page)).distanceFromBottom, { timeout: 10_000 })
+        .toBeGreaterThan(100)
+      await world.page.keyboard.press('End')
+      await expectBottom(world.page)
+      await expect.poll(() => backToBottom.count(), { timeout: 10_000 }).toBe(0)
+      assertClean(world)
+    })
+  }, 180_000)
+
+  it.skipIf(MODE === 'record')('touch-style fling scrolling owns streaming bottom-follow without wheel input', async () => {
+    await withScrollWorld({
+      failureShot: 'web-e2e-chat-scroll-fling-stream',
+      replay: [
+        replayEntry(toolStream()),
+        replayEntry(textStream(LIVE_FLING_FIRST, LIVE_FLING_DONE, 240)),
+      ],
+      seeds: [{ fixture: INPUTS_FIXTURE, id: FLING_SESSION_ID }],
+    }, async (world) => {
+      const readyPath = join(world.scaffold.workspaceCwd, TOOL_READY_FILE)
+      const releasePath = join(world.scaffold.workspaceCwd, TOOL_RELEASE_FILE)
+      await openSeed(world.page, INPUTS_FIXTURE, INPUTS_FIXTURE.markers.assistant(INPUTS_FIXTURE.turns))
+      const backToBottom = world.page.getByRole('button', { name: 'Back to bottom', exact: true })
+      const settled = world.scaffold.whenTurnSettled(60_000)
+      let released = false
+      try {
+        const composer = world.page.locator('textarea:enabled').last()
+        await composer.fill(LIVE_FLING_PROMPT)
+        await world.page.getByRole('button', { name: 'Send message', exact: true }).click()
+        await expect.poll(() => fileExists(readyPath), { timeout: 15_000 }).toBe(true)
+        await expectBottom(world.page)
+
+        // Fling away while the turn is mid-flight: the scroll burst alone must
+        // release bottom ownership, exactly like a wheel scroll would, even
+        // while streaming keeps re-asserting the floor between frames.
+        await flingTranscript(world.page, -900)
+        await backToBottom.waitFor({ timeout: 10_000 })
+        const awayAnchor = await visibleFlowAnchor(world.page)
+        const chunksBeforeRelease = world.events.filter(event => event.type === 'assistant/chunk').length
+        await writeFile(releasePath, 'release\n')
+        released = true
+        await expect.poll(
+          () => world.events.some(event => event.type === 'tool/result'),
+          { timeout: 15_000 },
+        ).toBe(true)
+        await expect.poll(
+          () => world.events.filter(event => event.type === 'assistant/chunk').length,
+          { timeout: 15_000 },
+        ).toBeGreaterThan(chunksBeforeRelease + 5)
+        await expectSameFlowTop(world.page, awayAnchor)
+
+        // Fling back to the floor: re-pin must come from the reader's scroll
+        // itself, and follow must then own the still-streaming tail. The
+        // retry loop chases the floor that streaming keeps pushing down.
+        for (let attempt = 0; attempt < 8; attempt += 1) {
+          if ((await scrollGeometry(world.page)).distanceFromBottom <= 1) break
+          await flingTranscript(world.page, 1_600)
+        }
+        await expectBottom(world.page)
+        await expect.poll(() => backToBottom.count(), { timeout: 10_000 }).toBe(0)
+        const chunksAtRepin = world.events.filter(event => event.type === 'assistant/chunk').length
+        await expect.poll(
+          () => world.events.filter(event => event.type === 'assistant/chunk').length,
+          { timeout: 15_000 },
+        ).toBeGreaterThan(chunksAtRepin + 5)
+        await expectBottom(world.page)
+      } finally {
+        if (!released) await writeFile(releasePath, 'release\n').catch(() => {})
+      }
+
+      await settled
+      await expect.poll(() => world.page.locator('[data-streaming="true"]').count(), { timeout: 15_000 }).toBe(0)
+      await world.page.getByText(LIVE_FLING_DONE, { exact: false }).last().waitFor({ timeout: 15_000 })
+      await expectBottom(world.page)
+      assertClean(world)
+    })
+  }, 180_000)
 })
--- a/apps/web/tests/goal-multi-turn-actions.e2e.ts
+++ b/apps/web/tests/goal-multi-turn-actions.e2e.ts
@@ -0,0 +1,168 @@
+// Keyless replay of a real two-round Goal run. Each autonomous round ends as
+// its own turn, so the first answer must keep its IconActions when Goal opens
+// round two and the final answer must own a second, distinct action row.
+import { mkdir, readFile, writeFile } from 'node:fs/promises'
+import { dirname, join } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterEach, describe, expect, it, onTestFailed } from 'vitest'
+import { parseSessionLog } from '@deepseek-ai/dsh-llm-replay'
+import type { SessionEvent, SessionId } from '@deepseek-ai/dsh-session'
+import type {} from '@deepseek-ai/dsh-goal'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { connectFreshWorkspace, newEnglishPage, saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/goal-multi-turn-actions', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+const OVERRIDE = join(SNAPSHOT_DIR, 'replay.override.json')
+const UI_EXPECTED = join(SNAPSHOT_DIR, 'ui.expected.md')
+const MODE = webSnapshotMode()
+
+const PROMPT = '做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的'
+const COMMAND = `/goal ${PROMPT}`
+
+const PACKAGE_FILES: Readonly<Record<string, string>> = {
+  'packages/client/ui-conversation/README.md': '# UI conversation\n',
+  'packages/client/ui-conversation/package.json': '{"name":"@deepseek-ai/dsh-client-ui-conversation"}\n',
+  'packages/client/ui-conversation/src/client.ts': 'export {}\n',
+  'packages/client/ui-conversation/tests/chat-view.spec.tsx': 'export {}\n',
+  'packages/context/session-reference/README.md': '# Session reference\n',
+  'packages/context/session-reference/package.json': '{"name":"@deepseek-ai/dsh-session-reference"}\n',
+  'packages/context/session-reference/src/index.ts': 'export {}\n',
+  'packages/context/session-reference/src/uri.ts': 'export {}\n',
+  'packages/context/session-reference/tests/session-reference.spec.ts': 'export {}\n',
+  'packages/llm/token-meter/README.md': '# Token meter\n',
+  'packages/llm/token-meter/package.json': '{"name":"@deepseek-ai/dsh-token-meter"}\n',
+  'packages/llm/token-meter/src/index.ts': 'export {}\n',
+  'packages/llm/token-meter/tests/token-meter.spec.ts': 'export {}\n',
+  'packages/skill/skill-local/README.md': '# Local skill provider\n',
+  'packages/skill/skill-local/package.json': '{"name":"@deepseek-ai/dsh-skill-local"}\n',
+  'packages/skill/skill-local/src/index.ts': 'export {}\n',
+  'packages/skill/skill-local/src/invariant.ts': 'export {}\n',
+  'packages/skill/skill-local/tests/skill-local.spec.ts': 'export {}\n',
+}
+
+/** Materialize a stable package inventory inside the isolated session workspace. */
+async function seedPackageInventory(workspaceRoot: string): Promise<void> {
+  for (const [relativePath, content] of Object.entries(PACKAGE_FILES)) {
+    const path = join(workspaceRoot, 'workspace', relativePath)
+    await mkdir(dirname(path), { recursive: true })
+    await writeFile(path, content)
+  }
+}
+
+/** Await exactly the requested number of durable turn ends, then flush the session. */
+function whenTurnsSettled(scaffold: WebScaffold, count: number, timeoutMs: number): Promise<SessionId> {
+  return new Promise<SessionId>((resolve, reject) => {
+    let completed = 0
+    const timer = setTimeout(() => {
+      off()
+      reject(new Error(`only ${completed}/${count} Goal turns ended within ${timeoutMs}ms`))
+    }, timeoutMs)
+    const off = scaffold.ctx.on('session/event', (session, event: SessionEvent) => {
+      if (event.type !== 'turn/end') return
+      completed += 1
+      if (completed !== count) return
+      clearTimeout(timer)
+      off()
+      scaffold.ctx.sessions.flush(session).then(() => { resolve(session.id) }, reject)
+    })
+  })
+}
+
+/** Goal-owned round numbers in durable user-message order. */
+function goalRounds(events: readonly SessionEvent[]): number[] {
+  return events.flatMap(event => event.type === 'user/message' && event.data.source.kind === 'goal'
+    ? [event.data.source.round]
+    : [])
+}
+
+/** Objective written by each durable Goal creation. */
+function createdObjectives(events: readonly SessionEvent[]): string[] {
+  return events.flatMap(event => event.type === 'goal/change' && event.data.operation === 'create'
+    ? [event.data.goal.objective]
+    : [])
+}
+
+describe('web e2e: Goal keeps one assistant action row per completed turn', () => {
+  let scaffold: WebScaffold | undefined
+  let browser: Browser | undefined
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  let sessionEvents: SessionEvent[]
+
+  afterEach(async () => {
+    const failures: unknown[] = []
+    await browser?.close().catch((error: unknown) => failures.push(error))
+    browser = undefined
+    const closing = scaffold
+    scaffold = undefined
+    await closing?.close().catch((error: unknown) => failures.push(error))
+    if (failures.length === 1) throw failures[0]
+    if (failures.length > 1) throw new AggregateError(failures, 'goal-multi-turn-actions teardown failed')
+  })
+
+  /** Boot the real Web composition and connect a fresh package fixture workspace. */
+  async function launch(): Promise<void> {
+    sessionEvents = []
+    scaffold = await launchWebScaffold(
+      MODE === 'record' ? {} : { replayFixture: FIXTURE, replayOverride: OVERRIDE },
+    )
+    await seedPackageInventory(scaffold.workspaceCwd)
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await newEnglishPage(browser)
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    await connectFreshWorkspace(page, scaffold.workspaceCwd)
+  }
+
+  /** Submit the Goal command after arming the two-turn barrier. */
+  async function runGoal(timeoutMs: number): Promise<SessionId> {
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = whenTurnsSettled(scaffold!, 2, timeoutMs)
+    await input.fill(COMMAND)
+    await input.press('Enter')
+    return settled
+  }
+
+  it.skipIf(MODE !== 'record')('records the two-round Goal through the real model', async () => {
+    await launch()
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-goal-multi-turn-actions-record'))
+    const sessionId = await runGoal(360_000)
+    await recordFixture(scaffold!, sessionId, FIXTURE)
+  }, 380_000)
+
+  it.skipIf(MODE === 'record')('keeps actions on both completed Goal turn tails', async () => {
+    const fixtureEvents = parseSessionLog(await readFile(FIXTURE, 'utf8'))
+    expect(createdObjectives(fixtureEvents)).toEqual([PROMPT])
+    expect(goalRounds(fixtureEvents)).toEqual([1, 2])
+
+    await launch()
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-goal-multi-turn-actions'))
+    await runGoal(120_000)
+
+    expect(sessionEvents.flatMap(event => event.type === 'turn/end' ? [event.data.turn] : []))
+      .toEqual([1, 2])
+    expect(goalRounds(sessionEvents)).toEqual([1, 2])
+    const branchButtons = page.getByRole('button', { name: 'Branch into a new conversation' })
+    await expect.poll(() => branchButtons.count(), { timeout: 15_000 }).toBe(2)
+    expect(await branchButtons.evaluateAll(buttons => buttons.map(button => button.getAttribute('aria-disabled'))))
+      .toEqual([null, null])
+    await branchButtons.last().focus()
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(UI_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 140_000)
+
+  it.skipIf(MODE === 'record')('keeps a closed fixture inventory', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, ['replay.override.json', 'session.jsonl', 'ui.expected.md'])
+  })
+})
--- a/apps/web/tests/message-actions.e2e.ts
+++ b/apps/web/tests/message-actions.e2e.ts
@@ -107,17 +107,17 @@ describe('web e2e: message IconActions and clocks on settled history', () => {
    await expect.poll(() => page.getByText('DONE', { exact: true }).count(), { timeout: 15_000 }).toBe(1)

    // Focus-reveal the footers (hover:hover keeps them opacity-hidden until
-    // hover/focus-within). Every durable message footer keeps branch visible,
-    // but only the final assistant at a completed transcript tail enables it.
+    // hover/focus-within). Branch renders only under assistant answers — user
+    // bubbles carry none — and only a completed transcript tail enables it.
    const copyButtons = page.getByRole('button', { name: 'Copy' })
    await expect.poll(() => copyButtons.count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(4)
    await copyButtons.first().focus()
    const branchButtons = page.getByRole('button', { name: 'Branch into a new conversation' })
-    await expect.poll(() => branchButtons.count(), { timeout: 5_000 }).toBe(4)
+    await expect.poll(() => branchButtons.count(), { timeout: 5_000 }).toBe(2)
    await expect.poll(
      () => branchButtons.evaluateAll(buttons => buttons.map(button => button.getAttribute('aria-disabled'))),
      { timeout: 5_000 },
-    ).toEqual(['true', 'true', 'true', null])
+    ).toEqual(['true', null])
    await branchButtons.first().focus()
    await expect.poll(() => page.getByRole('tooltip').textContent(), { timeout: 5_000 })
      .toBe('Available only on the last message of a completed turn')
--- a/apps/web/tests/models-settings.e2e.ts
+++ b/apps/web/tests/models-settings.e2e.ts
@@ -1,15 +1,17 @@
 // Web e2e scenario: the Models settings page end to end through the real
-// wire — the add card offers the dormant pi-ai catalog, typing an API key
+// wire — the add card offers the dormant pi-ai catalog, a blank key saves a
+// reference-free profile for provider-native auth, and typing an API key later
 // stores it write-only under the derived reference (`MINIMAX_CN_API_KEY`)
-// while the settings document records only that reference; the saved row
-// appears after the route topology invalidation without presenting liveness
-// as provider status. The customized-settings fold writes the curated
+// while the settings document records only that reference. Each saved row
+// appears after route topology invalidation without presenting liveness as
+// provider status. The customized-settings fold writes the curated
 // reasoning field as a merge patch. Zero model calls: configuration is pure
 // settings/credentials/llm-domain traffic, so there is no fixture and a
 // stray stream would fail loud on the open seam. The provider under test is
 // minimax-cn so a developer's real ANTHROPIC/OPENAI environment keys can
-// never shadow the derived reference. Removing that row is guarded by the
-// localized provider-confirmation dialog before the unset reaches the wire.
+// never shadow the derived reference. The deletion dialog distinguishes a
+// reference-free profile from a page-managed key before the credential and
+// settings unsets reach the wire.
 import { readFile } from 'node:fs/promises'
 import { fileURLToPath } from 'node:url'
 import { join } from 'node:path'
@@ -25,6 +27,7 @@ import { ZH_BROWSER_LOCALE, saveFailureShot } from './support.ts'
 const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/models-settings', import.meta.url))
 const EMPTY_EXPECTED = join(SNAPSHOT_DIR, 'empty.expected.md')
 const CONFIGURED_EXPECTED = join(SNAPSHOT_DIR, 'configured.expected.md')
+const NATIVE_DELETE_EXPECTED = join(SNAPSHOT_DIR, 'native-delete.expected.md')
 const DELETE_EXPECTED = join(SNAPSHOT_DIR, 'delete.expected.md')
 const MODE = webSnapshotMode()

@@ -70,7 +73,7 @@ describe('web e2e: Models settings page configures a dormant provider', () => {
    expect(options).toContain('anthropic')
    expect(options).toContain('minimax-cn')
    await pick.selectOption('minimax-cn')
-    await dialog.getByLabel('API 密钥').waitFor({ timeout: 10_000 })
+    await dialog.getByRole('textbox', { name: 'API 密钥', exact: true }).waitFor({ timeout: 10_000 })
    const snapshot = await captureStableAria(page, '[role="dialog"]', scaffold.workspaceCwd)
    await compareOrRefreshGolden(EMPTY_EXPECTED, snapshot, MODE)
  }, 60_000)
@@ -94,29 +97,66 @@ describe('web e2e: Models settings page configures a dormant provider', () => {
    expect(await dialog.getByText('该 API 密钥格式错误，请检查。').count()).toBe(0)
  }, 60_000)

-  it('stores the key under the derived reference and the route registers live', async () => {
+  it('saves a blank key as a reference-free provider-native profile', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-native-auth'))
+    const dialog = page.getByRole('dialog', { name: '设置' })
+    await dialog.getByRole('button', { name: '保存', exact: true }).click()
+    const row = dialog.getByText('minimax-cn', { exact: true }).first()
+    await row.waitFor({ timeout: 10_000 })
+    await dialog.getByText('已保存 minimax-cn。', { exact: true }).waitFor({ timeout: 10_000 })
+    expect(await dialog.getByRole('img', { name: 'API 密钥已配置' }).count()).toBe(0)
+    expect(await dialog.getByRole('img', { name: 'API 密钥缺失' }).count()).toBe(0)
+    const document = await readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8')
+    expect(document).toContain('minimax-cn: {}')
+    expect(document).not.toContain('MINIMAX_CN_API_KEY')
+  }, 60_000)
+
+  it('describes reference-free deletion without claiming a credential exists', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-native-delete'))
+    const settingsDialog = page.getByRole('dialog', { name: '设置' })
+    await settingsDialog.getByRole('button', { name: '删除 minimax-cn', exact: true }).click()
+    const deleteDialog = page.getByRole('dialog', { name: '删除 minimax-cn？' })
+    await deleteDialog.waitFor({ timeout: 10_000 })
+    const snapshot = await captureStableAria(
+      page,
+      '[role="dialog"][aria-label="删除 minimax-cn？"]',
+      scaffold.workspaceCwd,
+    )
+    await compareOrRefreshGolden(NATIVE_DELETE_EXPECTED, snapshot, MODE)
+    await deleteDialog.getByRole('button', { name: '取消', exact: true }).click()
+  }, 60_000)
+
+  it('stores the key under the derived reference and keeps the route live', async () => {
    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-add'))
    const dialog = page.getByRole('dialog', { name: '设置' })
-    await dialog.getByLabel('API 密钥').fill('sk-e2e-minimax')
+    await dialog.getByRole('button', { name: '编辑 minimax-cn' }).click()
+    await dialog.getByRole('textbox', { name: 'API 密钥', exact: true }).fill('sk-e2e-minimax')
    await dialog.getByRole('button', { name: '保存', exact: true }).click()
    // The profile lands in settings.yaml with only the derived reference, the
    // key value lands in the harness home's .env, the dormant route
    // registers, and the topology frame invalidates the page into the row.
-    const row = dialog.getByText('minimax-cn', { exact: true }).first()
-    await row.waitFor({ timeout: 10_000 })
+    await expect.poll(
+      async () => dialog.getByRole('textbox', { name: 'API 密钥', exact: true }).count(),
+      { timeout: 10_000 },
+    ).toBe(0)
+    await dialog.getByRole('img', { name: 'API 密钥已配置' }).waitFor({ timeout: 10_000 })
+    await dialog.getByText('已保存 minimax-cn。', { exact: true }).waitFor({ timeout: 10_000 })
    const document = await readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8')
    expect(document).toContain('minimax-cn:')
    expect(document).toContain('apiKeyEnv: MINIMAX_CN_API_KEY')
    expect(document).not.toContain('sk-e2e-minimax')
-    const stored = await readFile(join(scaffold.harnessHome, '.env'), 'utf8')
-    expect(stored).toContain('MINIMAX_CN_API_KEY=sk-e2e-minimax')
+    const credentialFile = join(scaffold.harnessHome, '.env')
+    await expect.poll(
+      async () => readFile(credentialFile, 'utf8').catch(() => ''),
+      { timeout: 10_000 },
+    ).toContain('MINIMAX_CN_API_KEY=sk-e2e-minimax')
    expect(await page.content()).not.toContain('sk-e2e-minimax')
  }, 60_000)

  it('applies a customized-settings field as a merge patch', async () => {
    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-customized'))
    const dialog = page.getByRole('dialog', { name: '设置' })
-    await dialog.getByRole('button', { name: '编辑' }).click()
+    await dialog.getByRole('button', { name: '编辑 minimax-cn' }).click()
    await dialog.getByText('自定义设置').click()
    const effort = dialog.getByLabel('推理强度')
    await effort.waitFor({ timeout: 10_000 })
@@ -125,6 +165,7 @@ describe('web e2e: Models settings page configures a dormant provider', () => {
    // The editor closes back to the row; the fold's write merged into the
    // stored profile beside the reference.
    await expect.poll(async () => dialog.getByLabel('推理强度').count(), { timeout: 10_000 }).toBe(0)
+    await dialog.getByText('已保存 minimax-cn。', { exact: true }).waitFor({ timeout: 10_000 })
    const document = await readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8')
    expect(document).toContain('reasoning: high')
    expect(document).toContain('apiKeyEnv: MINIMAX_CN_API_KEY')
@@ -133,32 +174,32 @@ describe('web e2e: Models settings page configures a dormant provider', () => {
    expect(tripwire.pageErrors).toEqual([])
  }, 60_000)

-  it('confirms provider deletion before removing its settings profile', async () => {
+  it('confirms an identified provider deletion before removing its profile and key', async () => {
    onTestFailed(() => saveFailureShot(page, 'web-e2e-models-delete'))
    const settingsDialog = page.getByRole('dialog', { name: '设置' })
-    await settingsDialog.getByRole('button', { name: '删除', exact: true }).click()
-    const deleteDialog = page.getByRole('dialog', { name: '删除模型提供方？' })
+    await settingsDialog.getByRole('button', { name: '删除 minimax-cn', exact: true }).click()
+    const deleteDialog = page.getByRole('dialog', { name: '删除 minimax-cn？' })
    await deleteDialog.waitFor({ timeout: 10_000 })
    const snapshot = await captureStableAria(
      page,
-      '[role="dialog"][aria-label="删除模型提供方？"]',
+      '[role="dialog"][aria-label="删除 minimax-cn？"]',
      scaffold.workspaceCwd,
    )
    await compareOrRefreshGolden(DELETE_EXPECTED, snapshot, MODE)

    await deleteDialog.getByRole('button', { name: '取消', exact: true }).click()
    expect(await readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8')).toContain('minimax-cn:')
-    await settingsDialog.getByRole('button', { name: '删除', exact: true }).click()
-    await page.getByRole('dialog', { name: '删除模型提供方？' })
-      .getByRole('button', { name: '删除提供方', exact: true }).click()
+    await settingsDialog.getByRole('button', { name: '删除 minimax-cn', exact: true }).click()
+    await page.getByRole('dialog', { name: '删除 minimax-cn？' })
+      .getByRole('button', { name: '删除 minimax-cn', exact: true }).click()
    await expect.poll(
      async () => readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8'),
      { timeout: 10_000 },
    ).not.toContain('minimax-cn:')
    expect(await readFile(join(scaffold.harnessHome, '.env'), 'utf8'))
-      .toContain('MINIMAX_CN_API_KEY=sk-e2e-minimax')
+      .not.toContain('MINIMAX_CN_API_KEY')
    await expect.poll(
-      async () => page.getByRole('dialog', { name: '删除模型提供方？' }).count(),
+      async () => page.getByRole('dialog', { name: '删除 minimax-cn？' }).count(),
      { timeout: 10_000 },
    ).toBe(0)
    await page.keyboard.press('Escape')
@@ -166,6 +207,8 @@ describe('web e2e: Models settings page configures a dormant provider', () => {
  }, 60_000)

  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
-    await assertFixtureInventory(SNAPSHOT_DIR, ['configured.expected.md', 'delete.expected.md', 'empty.expected.md'])
+    await assertFixtureInventory(SNAPSHOT_DIR, [
+      'configured.expected.md', 'delete.expected.md', 'empty.expected.md', 'native-delete.expected.md',
+    ])
  })
 })
--- a/apps/web/tests/snapshots/bash-abort-row/ui.expected.md
+++ b/apps/web/tests/snapshots/bash-abort-row/ui.expected.md
@@ -7,9 +7,6 @@
 - text: "Run two shell commands: wait for cancellation, then write skipped.txt. {{date}} {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/code-mode-round/ui.expected.md
+++ b/apps/web/tests/snapshots/code-mode-round/ui.expected.md
@@ -7,9 +7,6 @@
 - text: "Using ONE run_code program: run bash `echo CODE_ROUND_OK`, then read the file missing.txt catching its error in the program. Return an object with both outcomes. Then reply DONE and stop. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/cordis-tool-round/ui.expected.md
+++ b/apps/web/tests/snapshots/cordis-tool-round/ui.expected.md
@@ -7,9 +7,6 @@
 - text: "Use only Cordis tools. First call cordis_inspect with what \"temporary\". Then call cordis_mount with this exact code: \"return { name: \\\"snapshot-noop\\\", apply(ctx) {} }\". Read its returned id and call cordis_unmount with that exact id. After all three calls succeed, reply exactly CORDIS_UI_DONE and stop. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/fresh-round-trip/ui.expected.md
+++ b/apps/web/tests/snapshots/fresh-round-trip/ui.expected.md
@@ -7,9 +7,6 @@
 - text: "Use the bash tool to run exactly: echo WEB_E2E_OK. Then reply with the single word DONE and stop. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/goal-multi-turn-actions/replay.override.json
+++ b/apps/web/tests/snapshots/goal-multi-turn-actions/replay.override.json
@@ -0,0 +1,52 @@
+{
+  "patches": [
+    {
+      "at": 2,
+      "entry": {
+        "kind": "chunks",
+        "chunks": [
+          { "type": "block-start", "index": 0, "blockType": "reasoning" },
+          { "type": "reasoning-delta", "index": 0, "text": "There are 4 packages:\n- client/ui-conversation\n- context/session-reference\n- llm/token-meter\n- skill/skill-local\n\nFor this turn (turn 1 of 2), I should randomly pick one package and output its file structure. Let me pick randomly — I'll use $RANDOM or just pick one. Let me use a quick random selection." },
+          { "type": "block-end", "index": 0, "block": { "type": "reasoning", "text": "There are 4 packages:\n- client/ui-conversation\n- context/session-reference\n- llm/token-meter\n- skill/skill-local\n\nFor this turn (turn 1 of 2), I should randomly pick one package and output its file structure. Let me pick randomly — I'll use $RANDOM or just pick one. Let me use a quick random selection." } },
+          { "type": "block-start", "index": 1, "blockType": "tool-call" },
+          { "type": "tool-call-delta", "index": 1, "id": "call_00_dAM4qfVp4LLtRCiJi7d71418", "name": "bash", "argumentsDelta": "{\"command\": \"find packages -maxdepth 2 -mindepth 2 -type d | sort | awk '{print NR\\\": \\\"$0}' && echo \\\"---random pick---\\\" && find packages -maxdepth 2 -mindepth 2 -type d | sort | PATH=/__dsh_fixture_missing__ shuf -n 1\", \"description\": \"Randomly pick one package directory\"}" },
+          { "type": "block-end", "index": 1, "block": { "type": "tool-call", "id": "call_00_dAM4qfVp4LLtRCiJi7d71418", "name": "bash", "arguments": "{\"command\": \"find packages -maxdepth 2 -mindepth 2 -type d | sort | awk '{print NR\\\": \\\"$0}' && echo \\\"---random pick---\\\" && find packages -maxdepth 2 -mindepth 2 -type d | sort | PATH=/__dsh_fixture_missing__ shuf -n 1\", \"description\": \"Randomly pick one package directory\"}" } },
+          { "type": "usage", "usage": { "inputTokens": 156, "outputTokens": 202, "cacheReadTokens": 8448, "reasoningTokens": 80 } },
+          { "type": "finish", "reason": { "kind": "tool-calls" } }
+        ]
+      }
+    },
+    {
+      "at": 7,
+      "entry": {
+        "kind": "chunks",
+        "chunks": [
+          { "type": "block-start", "index": 0, "blockType": "reasoning" },
+          { "type": "reasoning-delta", "index": 0, "text": "The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package." },
+          { "type": "block-end", "index": 0, "block": { "type": "reasoning", "text": "The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package." } },
+          { "type": "block-start", "index": 1, "blockType": "tool-call" },
+          { "type": "tool-call-delta", "index": 1, "id": "call_00_3K2lg9zGfGsTvuh19xv65220", "name": "bash", "argumentsDelta": "{\"command\": \"python3 -c \\\"\\nimport random\\nfrom pathlib import Path\\npkgs = sorted(str(path.parent) for path in Path('packages').glob('*/*/package.json'))\\ncandidates = [p for p in pkgs if p != 'packages/context/session-reference']\\nprint(random.Random(0).choice(candidates))\\n\\\"\", \"description\": \"Re-roll excluding the package from turn 1\"}" },
+          { "type": "block-end", "index": 1, "block": { "type": "tool-call", "id": "call_00_3K2lg9zGfGsTvuh19xv65220", "name": "bash", "arguments": "{\"command\": \"python3 -c \\\"\\nimport random\\nfrom pathlib import Path\\npkgs = sorted(str(path.parent) for path in Path('packages').glob('*/*/package.json'))\\ncandidates = [p for p in pkgs if p != 'packages/context/session-reference']\\nprint(random.Random(0).choice(candidates))\\n\\\"\", \"description\": \"Re-roll excluding the package from turn 1\"}" } },
+          { "type": "usage", "usage": { "inputTokens": 62, "outputTokens": 164, "cacheReadTokens": 9728, "reasoningTokens": 46 } },
+          { "type": "finish", "reason": { "kind": "tool-calls" } }
+        ]
+      }
+    },
+    {
+      "at": 10,
+      "entry": {
+        "kind": "chunks",
+        "chunks": [
+          { "type": "block-start", "index": 0, "blockType": "text" },
+          { "type": "text-delta", "index": 0, "text": "两个 turn 均已完成，目标达成，标记 goal 为完成。" },
+          { "type": "block-end", "index": 0, "block": { "type": "text", "text": "两个 turn 均已完成，目标达成，标记 goal 为完成。" } },
+          { "type": "block-start", "index": 1, "blockType": "tool-call" },
+          { "type": "tool-call-delta", "index": 1, "id": "call_goal_complete", "name": "update_goal", "argumentsDelta": "{\"goal_id\":\"{{fromRequest:goal-[0-9a-f-]+}}\",\"revision\":1,\"action\":\"complete\"}" },
+          { "type": "block-end", "index": 1, "block": { "type": "tool-call", "id": "call_goal_complete", "name": "update_goal", "arguments": "{\"goal_id\":\"{{fromRequest:goal-[0-9a-f-]+}}\",\"revision\":1,\"action\":\"complete\"}" } },
+          { "type": "usage", "usage": { "inputTokens": 132, "outputTokens": 157, "cacheReadTokens": 10368, "reasoningTokens": 44 } },
+          { "type": "finish", "reason": { "kind": "tool-calls" } }
+        ]
+      }
+    }
+  ]
+}
--- a/apps/web/tests/snapshots/goal-multi-turn-actions/session.jsonl
+++ b/apps/web/tests/snapshots/goal-multi-turn-actions/session.jsonl
@@ -0,0 +1,183 @@
+{"type":"session","version":0,"id":"{{sessionId}}","createdAt":1786073817152,"cwd":"{{cwd}}/workspace"}
+{"type":"permission/preset","seq":0,"time":1786073817153,"data":{"preset":"workspace-write"}}
+{"type":"sandbox/mode","seq":1,"time":1786073817154,"data":{"mode":"workspace-write"}}
+{"type":"approval/policy","seq":2,"time":1786073817154,"data":{"policy":"ask"}}
+{"type":"command/run","seq":3,"time":1786073817205,"data":{"commandId":"cmd-fc52d8e6-1","name":"goal","args":" 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的","source":{"kind":"user"}}}
+{"type":"goal/change","seq":4,"time":1786073817206,"data":{"kind":"goal/change","version":1,"operation":"create","goal":{"id":"goal-f0026545-8655-41e9-b346-43a91211db94","revision":1,"objective":"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的","phase":"active","maxGoalRounds":256},"roundsStarted":0,"createdAt":1786073817206,"updatedAt":1786073817206}}
+{"type":"command/done","seq":5,"time":1786073817207,"data":{"commandId":"cmd-fc52d8e6-1","kind":"success","text":"Goal created\nStatus: active\nObjective: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\nRounds: 0/256\nActivation: armed\n\nCommands: /goal edit <objective>, /goal pause, /goal clear"}}
+{"type":"agent/inbox/spliced","seq":6,"time":1786073817217,"data":{"target":"next-turn","start":0,"inserted":[{"content":[{"type":"text","text":"<goal_round>\nObjective: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\"\nRound: 1/256\n\nContinue working toward the objective in this same session. Treat the current workspace, tool results, and durable session state as authoritative; inspect them instead of assuming earlier narration is still current. Make concrete progress and verify the result. Before claiming completion, gather evidence that the whole objective is achieved, read the current goal, and mark it complete. If work remains, leave the goal active for the next round. Follow the configured goal-tool policy before reporting a blocker.\n</goal_round>"}],"source":{"kind":"goal","goalId":"goal-f0026545-8655-41e9-b346-43a91211db94","revision":1,"round":1},"role":"user","id":"66aecc7f-d9bd-4aea-804a-56c4b17a3a0e"}]}}
+{"type":"turn/start","seq":7,"time":1786073817218,"data":{"turn":1}}
+{"type":"agent/inbox/spliced","seq":8,"time":1786073817218,"data":{"target":"next-turn","start":0,"removedCount":1,"inserted":[]}}
+{"type":"step/start","seq":9,"time":1786073817223,"data":{"turn":1,"step":1}}
+{"type":"user/message","seq":10,"time":1786073817223,"data":{"content":[{"type":"text","text":"<goal_round>\nObjective: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\"\nRound: 1/256\n\nContinue working toward the objective in this same session. Treat the current workspace, tool results, and durable session state as authoritative; inspect them instead of assuming earlier narration is still current. Make concrete progress and verify the result. Before claiming completion, gather evidence that the whole objective is achieved, read the current goal, and mark it complete. If work remains, leave the goal active for the next round. Follow the configured goal-tool policy before reporting a blocker.\n</goal_round>"}],"source":{"kind":"goal","goalId":"goal-f0026545-8655-41e9-b346-43a91211db94","revision":1,"round":1},"role":"user","id":"66aecc7f-d9bd-4aea-804a-56c4b17a3a0e"},"surfaceOp":"append"}
+{"type":"user/message","seq":11,"time":1786073817223,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}/workspace\". Some platform temporary areas may also be writable.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}/workspace\". Some platform temporary areas may also be writable."},{"name":"approval:policy","text":"Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}]},"role":"user","id":"99d1946b-5e77-4742-9da6-3aba0b45b031"},"surfaceOp":"append"}
+{"type":"request/header","seq":12,"time":1786073817224,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash","maxTokens":256000,"reasoningEffort":"high"},"adapterDefaults":{"reasoningEffort":true,"maxTokens":true},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":13,"time":1786073817224,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash","contextWindow":1000000}}
+{"type":"assistant/chunk","seq":14,"time":1786073819075,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
+{"type":"reasoning-chunks","seq0":15,"time0":1786073819076,"data":{"turn":1,"step":1,"index":0,"dt":[97,24,24,0,1,24,1,0,0,25,1,0,0,0,22,0,0,0,0,22,0,0,23,1,0,0,0,89,1,0,0,0,0,0,0,0,1,5,0,0,1,0,0,20,0,1,24,0,23,0,0,27,0,1,0,0,0,18,0,24,0,27,0,0,0,0,0,21,0,28,0,0,0,0,0,19,26,0,0,1,0,0,21,0,0,0,29,0,0,0,0,0,18,0,22,25,28,0,0,0,0,0,20,1,0,27,1,0,0,0,0,19,0,42,1,0,0,0,0,6,0,0,0,21,1,23,0,32,16,1,0,0,21,36,1,0,9,29,0,18,0,23,27,0,0,0,22,29,1,0,0,0,0,24,0,0,0,1,0,15,0,28,1,38,9,1,0,0,0,0,21,0,0,0,0,25,0,0,0,0,0,21,1,0,0,0,27,0,0,0,0,26,0,0,14,0,0,44,7,1,0,0,0,0,24,0,1,0,0,0,14,24],"texts":["The"," user","'s"," goal"," is",":"," \"","做","两个","turn","，","每个","turn","输出","随机","一个","包","的文件","结构","。","注意","你","做完","一个","turn","之后","，","直接","输出","内容","，","停止","，","我们的","系统","会","帮你","再","开","一个","turn","，","你","看着","做一个","类似的","\""," —"," which"," translates"," to",":"," \"","Do"," two"," turns",","," each"," turn"," output"," the"," file"," structure"," of"," a"," random"," package","."," Note"," that"," after"," you"," finish"," one"," turn",","," directly"," output"," the"," content"," and"," stop",";"," our"," system"," will"," help"," you"," open"," another"," turn",","," and"," you"," just"," do"," something"," similar",".\"\n\n","So"," this"," is"," round"," ","1"," of"," ","2","."," I"," need"," to"," output"," the"," file"," structure"," of"," a"," random"," package","."," Let"," me"," check"," the"," workspace"," to"," see"," if"," there","'s"," anything"," relevant"," —"," maybe"," there"," are"," packages"," installed"," or"," a"," specific"," context",".\n\n","Let"," me"," first"," check"," the"," current"," working"," directory"," and"," see"," what","'s"," there",".\n\n","The"," instruction"," says",":"," after"," finishing"," a"," turn",","," output"," the"," content"," directly"," and"," stop","."," So"," for"," this"," round",","," I"," should"," pick"," a"," random"," package"," and"," output"," its"," file"," structure","."," The"," system"," will"," open"," another"," turn"," for"," the"," second"," one",".\n\n","Let"," me"," look"," at"," the"," workspace"," to"," understand"," the"," environment","."]}}
+{"type":"assistant/chunk","seq":228,"time":1786073820683,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
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+{"type":"assistant/chunk","seq":2094,"time":1786073848307,"data":{"turn":2,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":2095,"time":1786073848307,"data":{"turn":2,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"两个 turn 都完成了 ✅\n\n**总结：**\n\n- **Turn 1** — 随机选中 `packages/context/session-reference`，输出了文件结构：\n  ```\n  session-reference/\n  ├── README.md\n  ├── package.json\n  ├── src/\n  │   ├── index.ts\n  │   └── uri.ts\n  └── tests/\n      └── session-reference.spec.ts\n  ```\n- **Turn 2** — 随机选中 `packages/llm/token-meter`，输出了文件结构：\n  ```\n  token-meter/\n  ├── README.md\n  ├── package.json\n  ├── src/\n  │   └── index.ts\n  └── tests/\n      └── token-meter.spec.ts\n  ```\n\n**验证方式：** 两个包的随机选择都通过 `python3 random.choice` 从工作区的 `packages/` 目录下实际枚举的 4 个候选包中抽取（`ui-conversation`、`session-reference`、`token-meter`、`skill-local`），文件结构则用 `find` 实际列出文件后整理输出，均已排除 `node_modules` 和 `.git`。第二次随机抽到了与 turn 1 相同的包，为避免重复换抽了另一个。\n\n**说明：** 本轮没有产生任何文件修改或提交——任务本身就是\"输出文件结构\"，所有产物都在上面的消息文本里。\n\n如果你还想看剩下两个包（`ui-conversation`、`skill-local`）的结构，或者其他格式的输出（比如带文件大小的树形图），随时告诉我。"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5a1daadd-6f23-49ea-980b-6f96f67e3f52"},"usage":{"inputTokens":311,"outputTokens":348,"cacheReadTokens":10624,"reasoningTokens":0}},"sourceEventSeqs":[1750,1751,1752,1753,1754,1755,1756,1757,1758,1759,1760,1761,1762,1763,1764,1765,1766,1767,1768,1769,1770,1771,1772,1773,1774,1775,1776,1777,1778,1779,1780,1781,1782,1783,1784,1785,1786,1787,1788,1789,1790,1791,1792,1793,1794,1795,1796,1797,1798,1799,1800,1801,1802,1803,1804,1805,1806,1807,1808,1809,1810,1811,1812,1813,1814,1815,1816,1817,1818,1819,1820,1821,1822,1823,1824,1825,1826,1827,1828,1829,1830,1831,1832,1833,1834,1835,1836,1837,1838,1839,1840,1841,1842,1843,1844,1845,1846,1847,1848,1849,1850,1851,1852,1853,1854,1855,1856,1857,1858,1859,1860,1861,1862,1863,1864,1865,1866,1867,1868,1869,1870,1871,1872,1873,1874,1875,1876,1877,1878,1879,1880,1881,1882,1883,1884,1885,1886,1887,1888,1889,1890,1891,1892,1893,1894,1895,1896,1897,1898,1899,1900,1901,1902,1903,1904,1905,1906,1907,1908,1909,1910,1911,1912,1913,1914,1915,1916,1917,1918,1919,1920,1921,1922,1923,1924,1925,1926,1927,1928,1929,1930,1931,1932,1933,1934,1935,1936,1937,1938,1939,1940,1941,1942,1943,1944,1945,1946,1947,1948,1949,1950,1951,1952,1953,1954,1955,1956,1957,1958,1959,1960,1961,1962,1963,1964,1965,1966,1967,1968,1969,1970,1971,1972,1973,1974,1975,1976,1977,1978,1979,1980,1981,1982,1983,1984,1985,1986,1987,1988,1989,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021,2022,2023,2024,2025,2026,2027,2028,2029,2030,2031,2032,2033,2034,2035,2036,2037,2038,2039,2040,2041,2042,2043,2044,2045,2046,2047,2048,2049,2050,2051,2052,2053,2054,2055,2056,2057,2058,2059,2060,2061,2062,2063,2064,2065,2066,2067,2068,2069,2070,2071,2072,2073,2074,2075,2076,2077,2078,2079,2080,2081,2082,2083,2084,2085,2086,2087,2088,2089,2090,2091,2092,2093,2094],"surfaceOp":"append"}
+{"type":"step/end","seq":2096,"time":1786073848308,"data":{"turn":2,"step":6}}
+{"type":"turn/end","seq":2097,"time":1786073848308,"data":{"turn":2,"reason":{"kind":"completed"}}}
--- a/apps/web/tests/snapshots/goal-multi-turn-actions/ui.expected.md
+++ b/apps/web/tests/snapshots/goal-multi-turn-actions/ui.expected.md
@@ -0,0 +1,200 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "workspace" [disabled]
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+- 'button "goal Goal created Status: active Objective: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的 Rounds: 0/256 Activation: armed Commands: /goal edit <objective>, /goal pause, /goal clear"':
+  - img
+  - img
+  - text: "goal Goal created Status: active Objective: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的 Rounds: 0/256 Activation: armed Commands: /goal edit <objective>, /goal pause, /goal clear"
+- button "Context injection goal":
+  - img
+  - img
+  - text: Context injection goal
+- button "Context injection @deepseek-ai/dsh-system-prompt":
+  - img
+  - img
+  - text: Context injection @deepseek-ai/dsh-system-prompt
+- 'button "Think The user''s goal is: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\" — which translates to: \"Do two turns, each turn output the file structure of a random package. Note that after you finish one turn, directly output the content and stop; our system will help you open another turn, and you just do something similar.\""':
+  - img
+  - img
+  - text: "Think The user's goal is: \"做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的\" — which translates to: \"Do two turns, each turn output the file structure of a random package. Note that after you finish one turn, directly output the content and stop; our system will help you open another turn, and you just do something similar.\""
+- button "Bash Show working directory and its contents":
+  - img
+  - img
+  - text: Bash Show working directory and its contents
+- 'button "Tool call get_goal · {}"':
+  - img
+  - img
+  - text: "Tool call get_goal · {}"
+- 'button "Think There''s a `packages` directory. Let me look inside to see what packages are available."':
+  - img
+  - img
+  - text: "Think There's a `packages` directory. Let me look inside to see what packages are available."
+- button "Bash List packages directory contents":
+  - img
+  - img
+  - text: Bash List packages directory contents
+- button "Think There are 4 packages:":
+  - img
+  - img
+  - text: "Think There are 4 packages:"
+- button "Failed Bash Randomly pick one package directory":
+  - img
+  - text: Failed Bash Randomly pick one package directory
+- 'button "Think shuf is not available on macOS. I''ll use a different approach for random selection. Let me use $RANDOM in bash or use `sort -R` or Python."':
+  - img
+  - img
+  - text: "Think shuf is not available on macOS. I'll use a different approach for random selection. Let me use $RANDOM in bash or use `sort -R` or Python."
+- button "Bash Randomly select one package with Python":
+  - img
+  - img
+  - text: Bash Randomly select one package with Python
+- 'button "Think The random pick for turn 1 is `packages/context/session-reference`. Now I''ll output its file structure. Let me get the file tree."':
+  - img
+  - img
+  - text: "Think The random pick for turn 1 is `packages/context/session-reference`. Now I'll output its file structure. Let me get the file tree."
+- button "Bash List all files in session-reference package":
+  - img
+  - img
+  - text: Bash List all files in session-reference package
+- 'button "Think Turn 1 is done. Per the objective: \"你做完一个turn之后，直接输出内容，停止\" — after finishing a turn, directly output the content and stop. The system will open another turn."':
+  - img
+  - img
+  - text: "Think Turn 1 is done. Per the objective: \"你做完一个turn之后，直接输出内容，停止\" — after finishing a turn, directly output the content and stop. The system will open another turn."
+- paragraph:
+  - strong: Turn 1 / 2
+  - text: — 随机选中的包：
+  - code: packages/context/session-reference
+  - text: 📦
+- button "Copy"
+- code: session-reference ├── README.md ├── package.json ├── src │ ├── index.ts │ └── uri.ts └── tests └── session-reference.spec.ts
+- button "Copy"
+- code: "session-reference/ ├── README.md # 包说明文档 ├── package.json # 包元数据与依赖声明 ├── src/ │ ├── index.ts # 入口，导出公共 API │ └── uri.ts # 会话引用 URI 相关实现 └── tests/ └── session-reference.spec.ts # 单元测试"
+- paragraph: 这是一个很典型的轻量 TypeScript 包结构：入口 + 实现 + 测试。这一轮到此结束，等系统开启下一个 turn。
+- button "Copy":
+  - img
+- button "Branch into a new conversation":
+  - img
+- text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s
+- button "Context injection goal":
+  - img
+  - img
+  - text: Context injection goal
+- 'button "Think This is turn 2 of 2. I need to randomly pick another package and output its file structure. In the first turn I picked `packages/context/session-reference`. Let me pick a different one randomly this time."':
+  - img
+  - img
+  - text: "Think This is turn 2 of 2. I need to randomly pick another package and output its file structure. In the first turn I picked `packages/context/session-reference`. Let me pick a different one randomly this time."
+- button "Bash Randomly select another package with Python":
+  - img
+  - img
+  - text: Bash Randomly select another package with Python
+- 'button "Think The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package."':
+  - img
+  - img
+  - text: "Think The random pick returned the same package as turn 1. Since turn 1 already covered `session-reference`, it would be better to pick a different one for variety. Let me re-roll, excluding the already-covered package."
+- button "Bash Re-roll excluding the package from turn 1":
+  - img
+  - img
+  - text: Bash Re-roll excluding the package from turn 1
+- button "Bash List all files in token-meter package":
+  - img
+  - img
+  - text: Bash List all files in token-meter package
+- 'button "Think This is turn 2 of 2. I''ve output the file structure for `packages/llm/token-meter`. Both turns are done. I should output the content, stop, and then mark the goal as complete since both turns are finished."':
+  - img
+  - img
+  - text: "Think This is turn 2 of 2. I've output the file structure for `packages/llm/token-meter`. Both turns are done. I should output the content, stop, and then mark the goal as complete since both turns are finished."
+- paragraph:
+  - strong: Turn 2 / 2
+  - text: — 随机选中的包：
+  - code: packages/llm/token-meter
+  - text: 📦
+- button "Copy"
+- code: token-meter ├── README.md ├── package.json ├── src │ └── index.ts └── tests └── token-meter.spec.ts
+- button "Copy"
+- code: "token-meter/ ├── README.md # 包说明文档 ├── package.json # 包元数据与依赖声明 ├── src/ │ └── index.ts # 入口，导出公共 API（token 计量逻辑） └── tests/ └── token-meter.spec.ts # 单元测试"
+- paragraph:
+  - text: 两个 turn 都完成了（turn 1：
+  - code: session-reference
+  - text: ，turn 2：
+  - code: token-meter
+  - text: ）。这一轮到此结束。
+- 'button "Tool call get_goal · {}"':
+  - img
+  - img
+  - text: "Tool call get_goal · {}"
+- paragraph: 两个 turn 均已完成，目标达成，标记 goal 为完成。
+- button "Tool call update_goal · goal-{{uuid}}":
+  - img
+  - img
+  - text: Tool call update_goal · goal-{{uuid}}
+- 'button "Context injection tool-goal complete: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的"':
+  - img
+  - img
+  - text: "Context injection tool-goal complete: 做两个turn，每个turn输出随机一个包的文件结构。注意你做完一个turn之后，直接输出内容，停止，我们的系统会帮你再开一个turn，你看着做一个类似的"
+- paragraph: 两个 turn 都完成了 ✅
+- paragraph:
+  - strong: 总结：
+- list:
+  - listitem:
+    - strong: Turn 1
+    - text: — 随机选中
+    - code: packages/context/session-reference
+    - text: ，输出了文件结构：
+    - button "Copy"
+    - code: session-reference/ ├── README.md ├── package.json ├── src/ │ ├── index.ts │ └── uri.ts └── tests/ └── session-reference.spec.ts
+  - listitem:
+    - strong: Turn 2
+    - text: — 随机选中
+    - code: packages/llm/token-meter
+    - text: ，输出了文件结构：
+    - button "Copy"
+    - code: token-meter/ ├── README.md ├── package.json ├── src/ │ └── index.ts └── tests/ └── token-meter.spec.ts
+- paragraph:
+  - strong: 验证方式：
+  - text: 两个包的随机选择都通过
+  - code: python3 random.choice
+  - text: 从工作区的
+  - code: packages/
+  - text: 目录下实际枚举的 4 个候选包中抽取（
+  - code: ui-conversation
+  - text: 、
+  - code: session-reference
+  - text: 、
+  - code: token-meter
+  - text: 、
+  - code: skill-local
+  - text: ），文件结构则用
+  - code: find
+  - text: 实际列出文件后整理输出，均已排除
+  - code: node_modules
+  - text: 和
+  - code: .git
+  - text: 。第二次随机抽到了与 turn 1 相同的包，为避免重复换抽了另一个。
+- paragraph:
+  - strong: 说明：
+  - text: 本轮没有产生任何文件修改或提交——任务本身就是"输出文件结构"，所有产物都在上面的消息文本里。
+- paragraph:
+  - text: 如果你还想看剩下两个包（
+  - code: ui-conversation
+  - text: 、
+  - code: skill-local
+  - text: ）的结构，或者其他格式的输出（比如带文件大小的树形图），随时告诉我。
+- button "Copy":
+  - img
+- button "Branch into a new conversation":
+  - img
+- tooltip "Branch into a new conversation"
+- text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s
+- textbox "Message the agent"
+- button "Commands":
+  - img
+- 'button "Access mode, current: Workspace Write"': Workspace Write
+- button "Select model, current DeepSeek-V4-Flash":
+  - text: DeepSeek-V4-Flash
+  - img
+- button "9% of context used"
+- button "Send message" [disabled]
+- text: 2 turns · 12 steps LLM {{duration}} · Tool call {{duration}} TTFT avg {{duration}} · {{throughput}} tok/s Cache hit 91% Input 113K tok · Output 2.4K tok
--- a/apps/web/tests/snapshots/lifecycle-chrome/reloaded.expected.md
+++ b/apps/web/tests/snapshots/lifecycle-chrome/reloaded.expected.md
@@ -7,9 +7,6 @@
 - text: Reply with the single word LIGHTHOUSE and stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/live-interactions/cancel.expected.md
+++ b/apps/web/tests/snapshots/live-interactions/cancel.expected.md
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/live-interactions/error-auth.expected.md
+++ b/apps/web/tests/snapshots/live-interactions/error-auth.expected.md
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/live-interactions/loading.expected.md
+++ b/apps/web/tests/snapshots/live-interactions/loading.expected.md
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/live-interactions/retry.expected.md
+++ b/apps/web/tests/snapshots/live-interactions/retry.expected.md
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/markdown-cjk-strong/ui.expected.md
+++ b/apps/web/tests/snapshots/markdown-cjk-strong/ui.expected.md
@@ -7,9 +7,6 @@
 - text: Render adjacent CJK strong emphasis. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - heading "CJK strong emphasis" [level=2]
 - paragraph:
  - strong: 注意：
--- a/apps/web/tests/snapshots/markdown-images/ui.expected.md
+++ b/apps/web/tests/snapshots/markdown-images/ui.expected.md
@@ -7,9 +7,6 @@
 - text: Show the Markdown image policy. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - heading "Markdown images" [level=2]
 - paragraph:
  - img "Remote test image"
--- a/apps/web/tests/snapshots/markdown-inline-code-links/ui.expected.md
+++ b/apps/web/tests/snapshots/markdown-inline-code-links/ui.expected.md
@@ -7,9 +7,6 @@
 - text: Show the local preview URL. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - heading "Inline code links" [level=2]
 - paragraph:
  - text: "Preview:"
--- a/apps/web/tests/snapshots/math-rendering/ui.expected.md
+++ b/apps/web/tests/snapshots/math-rendering/ui.expected.md
@@ -7,9 +7,6 @@
 - text: Render this mathematical proof. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - heading "Math rendering" [level=2]
 - paragraph:
  - text: Inline dollar
--- a/apps/web/tests/snapshots/message-actions/ui.expected.md
+++ b/apps/web/tests/snapshots/message-actions/ui.expected.md
@@ -8,9 +8,6 @@
 - button "Copy":
  - img
 - tooltip "Copy"
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Think The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel.":
  - img
  - img
@@ -38,9 +35,6 @@
 - text: Stopped Now give the final answer. 7/25 {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - paragraph: DONE
 - button "Copy":
  - img
--- a/apps/web/tests/snapshots/models-settings/configured.expected.md
+++ b/apps/web/tests/snapshots/models-settings/configured.expected.md
@@ -13,11 +13,13 @@
    - text: 关闭
  - heading "模型" [level=2]
  - paragraph: 填入各提供方的 API 密钥即可使用其模型。
+  - status: 已保存 minimax-cn。
  - list:
    - listitem:
      - text: minimax-cn
-      - button "编辑"
-      - button "删除"
+      - img "API 密钥已配置"
+      - button "编辑 minimax-cn": 编辑
+      - button "删除 minimax-cn": 删除
  - button "添加提供方":
    - img
    - text: 添加提供方
--- a/apps/web/tests/snapshots/models-settings/delete.expected.md
+++ b/apps/web/tests/snapshots/models-settings/delete.expected.md
@@ -1,7 +1,7 @@
- dialog "删除模型提供方？":
-  - heading "删除模型提供方？" [level=2]
+- dialog "删除 minimax-cn？":
+  - heading "删除 minimax-cn？" [level=2]
  - button "关闭":
    - img
-  - paragraph: 删除此模型提供方会移除其配置。在重新添加前，你将无法继续使用其模型。
+  - paragraph: 删除 minimax-cn 会移除其配置和存储的 API 密钥。
  - button "取消"
-  - button "删除提供方"
+  - button "删除 minimax-cn"
--- a/apps/web/tests/snapshots/models-settings/empty.expected.md
+++ b/apps/web/tests/snapshots/models-settings/empty.expected.md
@@ -55,7 +55,7 @@
    - option "zai-coding-cn"
  - text: API 密钥
  - textbox "API 密钥":
-    - /placeholder: 输入 API 密钥
+    - /placeholder: 输入 API 密钥，或留空使用环境认证
  - group: 自定义设置
  - button "取消"
  - button "保存"
--- a/apps/web/tests/snapshots/models-settings/native-delete.expected.md
+++ b/apps/web/tests/snapshots/models-settings/native-delete.expected.md
@@ -0,0 +1,7 @@
+- dialog "删除 minimax-cn？":
+  - heading "删除 minimax-cn？" [level=2]
+  - button "关闭":
+    - img
+  - paragraph: 删除 minimax-cn 会移除其配置；其使用的凭证（如有）由其他位置管理，将会保留。
+  - button "取消"
+  - button "删除 minimax-cn"
--- a/apps/web/tests/snapshots/onboarding-deepseek-config/models.expected.md
+++ b/apps/web/tests/snapshots/onboarding-deepseek-config/models.expected.md
@@ -16,7 +16,8 @@
  - list:
    - listitem:
      - text: DeepSeek
-      - button "编辑"
+      - img "API 密钥已配置"
+      - button "编辑 DeepSeek (deepseek-official)": 编辑
      - text: DeepSeek deepseek-official API 密钥
      - textbox "API 密钥":
        - /placeholder: 已配置——输入新值可替换
--- a/apps/web/tests/snapshots/plan-review/approved.expected.md
+++ b/apps/web/tests/snapshots/plan-review/approved.expected.md
@@ -8,9 +8,6 @@
 - text: "plan Plan mode on. Use /plan off to leave. Interjection Plan a small change: add a --greeting flag to a CLI. Do not read or write any files. Call exit_plan_mode with a short plan of at most five bullet points. Once the plan is approved, reply with the single word DONE and stop. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/question-composer/answered.expected.md
+++ b/apps/web/tests/snapshots/question-composer/answered.expected.md
@@ -7,9 +7,6 @@
 - text: "Use the ask_user_question tool to ask me exactly one multi-select question with id \"color\", question \"Which color do you prefer?\", header \"Pick one\", and two options: label \"Blue\" with description \"A cool recessive hue that reads as calm and trustworthy in long reading sessions and dense dashboards.\", and label \"Green\" with description \"A restful mid-spectrum hue with the highest perceived brightness, easiest on the eye over long sessions.\" Set multi_select to true. After I answer, reply with the single word DONE and stop. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/queue-actions/collapsed.expected.md
+++ b/apps/web/tests/snapshots/queue-actions/collapsed.expected.md
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/queue-actions/editing.expected.md
+++ b/apps/web/tests/snapshots/queue-actions/editing.expected.md
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/queue-actions/preserved.expected.md
+++ b/apps/web/tests/snapshots/queue-actions/preserved.expected.md
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/queue-actions/ui.expected.md
+++ b/apps/web/tests/snapshots/queue-actions/ui.expected.md
@@ -7,9 +7,6 @@
 - text: Reply with a one-sentence description of event sourcing, then stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/seeded-history/command-row.expected.md
+++ b/apps/web/tests/snapshots/seeded-history/command-row.expected.md
@@ -7,9 +7,6 @@
 - text: "Use the read tool twice in one assistant message: read a.txt and b.txt. Then reply with the single word DONE and stop. 7/25 {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Think The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel.":
  - img
  - img
--- a/apps/web/tests/snapshots/seeded-history/ui.expected.md
+++ b/apps/web/tests/snapshots/seeded-history/ui.expected.md
@@ -7,9 +7,6 @@
 - text: "Use the read tool twice in one assistant message: read a.txt and b.txt. Then reply with the single word DONE and stop. 7/25 {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Think The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel.":
  - img
  - img
--- a/apps/web/tests/snapshots/steering/mid-steer.expected.md
+++ b/apps/web/tests/snapshots/steering/mid-steer.expected.md
@@ -7,9 +7,6 @@
 - text: Use the ask_user_question tool to ask me exactly one question with id "checkpoint", question "Ready to continue?", header "Checkpoint", and options labeled "Yes" and "No". After I answer, reply with one short sentence acknowledging my answer and stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/snapshots/steering/settled.expected.md
+++ b/apps/web/tests/snapshots/steering/settled.expected.md
@@ -7,9 +7,6 @@
 - text: Use the ask_user_question tool to ask me exactly one question with id "checkpoint", question "Ready to continue?", header "Checkpoint", and options labeled "Yes" and "No". After I answer, reply with one short sentence acknowledging my answer and stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -25,9 +22,6 @@
 - text: "Interjection Interjection: include the word BANANA in your final reply. {{clock}}"
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Think The user selected \"Yes\" and wants me to include the word \"BANANA\" in my final reply. Let me acknowledge their answer.":
  - img
  - img
--- a/apps/web/tests/snapshots/subagent-conversation/nested.expected.md
+++ b/apps/web/tests/snapshots/subagent-conversation/nested.expected.md
@@ -11,8 +11,6 @@
 - text: Give one concrete event sourcing example. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation":
-  - img
 - status:
  - strong: This subagent is read-only for now
  - text: The parent session is offline; reopen it to continue sending messages.
--- a/apps/web/tests/snapshots/subagent-conversation/ui.expected.md
+++ b/apps/web/tests/snapshots/subagent-conversation/ui.expected.md
@@ -12,9 +12,6 @@
 - text: Explain event sourcing in one sentence. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
@@ -31,9 +28,6 @@
 - text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s Now give the same explanation to a human reader. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Think The user is asking for a one-sentence description of event sourcing. This is a straightforward knowledge question that doesn't require any skill loading or tool calls.":
  - img
  - img
--- a/apps/web/tests/snapshots/turn-tail-actions/running.expected.md
+++ b/apps/web/tests/snapshots/turn-tail-actions/running.expected.md
@@ -0,0 +1,35 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Begin your reply with the" [disabled]
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+- text: Begin your reply with the plain sentence "Reading the workspace now." as text, and in that same message call the bash tool with the command "echo alpha". After the tool result, reply with the single word DONE and stop. {{clock}}
+- button "Copy":
+  - img
+- tooltip "Copy"
+- button "Context injection @deepseek-ai/dsh-system-prompt":
+  - img
+  - img
+  - text: Context injection @deepseek-ai/dsh-system-prompt
+- button "Think The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop.":
+  - img
+  - img
+  - text: Think The user wants me to begin with "Reading the workspace now." and call bash with "echo alpha" in the same message. Then after the tool result, reply with the single word DONE and stop.
+- paragraph: Reading the workspace now.
+- button "Bash Print alpha to stdout":
+  - img
+  - img
+  - text: Bash Print alpha to stdout
+- paragraph: partial
+- status: Deep diving...
+- textbox "Message the agent"
+- button "Commands":
+  - img
+- 'button "Access mode, current: Workspace Write"': Workspace Write
+- button "Select model, current DeepSeek-V4-Flash":
+  - text: DeepSeek-V4-Flash
+  - img
+- button "6% of context used"
+- button "Stop generating"
+- text: 1 turns · 1 steps LLM {{duration}} · Tool call {{duration}} TTFT avg {{duration}} · {{throughput}} tok/s Cache hit 0% Input 7.8K tok · Output 109 tok
--- a/apps/web/tests/snapshots/turn-tail-actions/session.jsonl
+++ b/apps/web/tests/snapshots/turn-tail-actions/session.jsonl
@@ -0,0 +1,36 @@
+{"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785918212891,"cwd":"{{cwd}}/workspace"}
+{"type":"permission/preset","seq":0,"time":1785918212892,"data":{"preset":"workspace-write"}}
+{"type":"sandbox/mode","seq":1,"time":1785918212893,"data":{"mode":"workspace-write"}}
+{"type":"approval/policy","seq":2,"time":1785918212893,"data":{"policy":"ask"}}
+{"type":"turn/start","seq":3,"time":1785918212945,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
+{"type":"user/message","seq":4,"time":1785918212945,"data":{"content":[{"type":"text","text":"Begin your reply with the plain sentence \"Reading the workspace now.\" as text, and in that same message call the bash tool with the command \"echo alpha\". After the tool result, reply with the single word DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"4dcaa766-7ea2-4c6a-84cb-0d6ab53b5fb4"},"surfaceOp":"append"}
+{"type":"session/title","seq":5,"time":1785918212946,"data":{"title":"Begin your reply with the","messageSeqs":[4],"source":{"kind":"fallback"}}}
+{"type":"user/message","seq":6,"time":1785918212956,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}/workspace\". Some platform temporary areas may also be writable.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"60b8851a-888c-4d7e-9513-7d845f8d769b"},"surfaceOp":"append"}
+{"type":"step/start","seq":7,"time":1785918212956,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":8,"time":1785918212957,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash","maxTokens":256000,"reasoningEffort":"high"},"adapterDefaults":{"reasoningEffort":true,"maxTokens":true},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":9,"time":1785918212958,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash","contextWindow":1000000}}
+{"type":"assistant/chunk","seq":10,"time":1785918214389,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
+{"type":"reasoning-chunks","seq0":11,"time0":1785918214390,"data":{"turn":1,"step":1,"index":0,"dt":[101,1,0,0,0,56,1,0,0,0,0,0,0,72,1,0,0,0,0,29,0,0,0,0,35,1,0,17,39,0,0,0,0,0,31,0,0,0,0,0,0],"texts":["The"," user"," wants"," me"," to"," begin"," with"," \"","Reading"," the"," workspace"," now",".\""," and"," call"," bash"," with"," \"","echo"," alpha","\""," in"," the"," same"," message","."," Then"," after"," the"," tool"," result",","," reply"," with"," the"," single"," word"," D","ONE"," and"," stop","."]}}
+{"type":"assistant/chunk","seq":53,"time":1785918214774,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
+{"type":"text-chunks","seq0":54,"time0":1785918214774,"data":{"turn":1,"step":1,"index":1,"dt":[0,0,0,48],"texts":["Reading"," the"," workspace"," now","."]}}
+{"type":"assistant/chunk","seq":59,"time":1785918214841,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":2,"blockType":"tool-call"}}}
+{"type":"tool-call-chunks","seq0":60,"time0":1785918214842,"data":{"turn":1,"step":1,"index":2,"dt":[28,0,0,0,0,25,0,0,0,52,1,0,0,0,25,0,0,1,15,0,25],"id":"call_00_1yZGg4XTqe0N5r1rnDLx5082","name":"bash","args":["","{","\"","command","\"",": ","\"","echo"," alpha","\"",", ","\"","description","\"",": ","\"","Print"," alpha"," to"," stdout","\"","}"]}}
+{"type":"assistant/chunk","seq":82,"time":1785918215056,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop."}}}}
+{"type":"assistant/chunk","seq":83,"time":1785918215057,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"Reading the workspace now."}}}}
+{"type":"assistant/chunk","seq":84,"time":1785918215057,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":2,"block":{"type":"tool-call","id":"call_00_1yZGg4XTqe0N5r1rnDLx5082","name":"bash","arguments":"{\"command\": \"echo alpha\", \"description\": \"Print alpha to stdout\"}"}}}}
+{"type":"assistant/chunk","seq":85,"time":1785918215057,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":7788,"outputTokens":109,"cacheReadTokens":0,"reasoningTokens":42}}}}
+{"type":"assistant/chunk","seq":86,"time":1785918215057,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":87,"time":1785918215061,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop."},{"type":"text","text":"Reading the workspace now."},{"type":"tool-call","id":"call_00_1yZGg4XTqe0N5r1rnDLx5082","name":"bash","arguments":"{\"command\": \"echo alpha\", \"description\": \"Print alpha to stdout\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"73708391-4b5f-429e-b71c-ef2114244a95"},"usage":{"inputTokens":7788,"outputTokens":109,"cacheReadTokens":0,"reasoningTokens":42}},"sourceEventSeqs":[10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86],"surfaceOp":"append"}
+{"type":"tool/call","seq":88,"time":1785918215062,"data":{"turn":1,"step":1,"callId":"call_00_1yZGg4XTqe0N5r1rnDLx5082","name":"bash","arguments":"{\"command\": \"echo alpha\", \"description\": \"Print alpha to stdout\"}"}}
+{"type":"tool/result","seq":89,"time":1785918215096,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_1yZGg4XTqe0N5r1rnDLx5082"},"content":[{"type":"tool-result","toolCallId":"call_00_1yZGg4XTqe0N5r1rnDLx5082","content":[{"type":"text","text":"alpha\n"}],"isError":false}],"role":"user","id":"8b7ad694-b19e-4728-a804-eef9f53820b9"}},"sourceEventSeqs":[88],"surfaceOp":"append"}
+{"type":"step/end","seq":90,"time":1785918215097,"data":{"turn":1,"step":1}}
+{"type":"step/start","seq":91,"time":1785918215106,"data":{"turn":1,"step":2}}
+{"type":"assistant/chunk","seq":92,"time":1785918216259,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":93,"time":1785918216259,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":0,"text":"D"}}}
+{"type":"assistant/chunk","seq":94,"time":1785918216288,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":0,"text":"ONE"}}}
+{"type":"assistant/chunk","seq":95,"time":1785918216289,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
+{"type":"assistant/chunk","seq":96,"time":1785918216289,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":103,"outputTokens":3,"cacheReadTokens":7808,"reasoningTokens":0}}}}
+{"type":"assistant/chunk","seq":97,"time":1785918216289,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":98,"time":1785918216289,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"fbb5a6d0-9945-4b52-ad15-978173d450a7"},"usage":{"inputTokens":103,"outputTokens":3,"cacheReadTokens":7808,"reasoningTokens":0}},"sourceEventSeqs":[92,93,94,95,96,97],"surfaceOp":"append"}
+{"type":"step/end","seq":99,"time":1785918216289,"data":{"turn":1,"step":2}}
+{"type":"turn/end","seq":100,"time":1785918216289,"data":{"turn":1,"reason":{"kind":"completed"}}}
--- a/apps/web/tests/snapshots/turn-tail-actions/settled.expected.md
+++ b/apps/web/tests/snapshots/turn-tail-actions/settled.expected.md
@@ -0,0 +1,40 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Begin your reply with the" [disabled]
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+- text: Begin your reply with the plain sentence "Reading the workspace now." as text, and in that same message call the bash tool with the command "echo alpha". After the tool result, reply with the single word DONE and stop. {{clock}}
+- button "Copy":
+  - img
+- button "Context injection @deepseek-ai/dsh-system-prompt":
+  - img
+  - img
+  - text: Context injection @deepseek-ai/dsh-system-prompt
+- button "Think The user wants me to begin with \"Reading the workspace now.\" and call bash with \"echo alpha\" in the same message. Then after the tool result, reply with the single word DONE and stop.":
+  - img
+  - img
+  - text: Think The user wants me to begin with "Reading the workspace now." and call bash with "echo alpha" in the same message. Then after the tool result, reply with the single word DONE and stop.
+- paragraph: Reading the workspace now.
+- button "Bash Print alpha to stdout":
+  - img
+  - img
+  - text: Bash Print alpha to stdout
+- paragraph: partial
+- text: Stopped
+- button "Copy":
+  - img
+- tooltip "Copy"
+- button "Branch into a new conversation":
+  - img
+- text: {{clock}} Ran for {{duration}} TTFT {{duration}} {{throughput}} tok/s
+- textbox "Message the agent"
+- button "Commands":
+  - img
+- 'button "Access mode, current: Workspace Write"': Workspace Write
+- button "Select model, current DeepSeek-V4-Flash":
+  - text: DeepSeek-V4-Flash
+  - img
+- button "6% of context used"
+- button "Send message" [disabled]
+- text: 1 turns · 2 steps LLM {{duration}} · Tool call {{duration}} TTFT avg {{duration}} · {{throughput}} tok/s Cache hit 0% Input 7.8K tok · Output 109 tok
--- a/apps/web/tests/snapshots/web-search-round/ui.expected.md
+++ b/apps/web/tests/snapshots/web-search-round/ui.expected.md
@@ -7,9 +7,6 @@
 - text: Use web_search to search exactly "DeepSeek Harness snapshot search". Then reply exactly SEARCH_DONE and stop. {{clock}}
 - button "Copy":
  - img
- button "Branch into a new conversation" [disabled]:
-  - img
- text: Available only on the last message of a completed turn
 - button "Context injection @deepseek-ai/dsh-system-prompt":
  - img
  - img
--- a/apps/web/tests/turn-tail-actions.e2e.ts
+++ b/apps/web/tests/turn-tail-actions.e2e.ts
@@ -0,0 +1,152 @@
+// Web e2e scenario: assistant IconActions belong to the settled answer, so
+// they arrive with `turn/end` and not before. The recorded turn narrates in
+// plain text before its tool call, which is the shape that used to hand the
+// footer to mid-turn narration for the seconds a tool runs and then move it
+// down. A `hang` sidecar on the SECOND model call parks the turn after the
+// narration and the tool result are durable, so the running state is stable by
+// construction rather than by timing; stopping from that park writes the
+// `turn/end` that hands the footer to the turn's transcript tail.
+import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises'
+import { existsSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterEach, describe, expect, it, onTestFailed } from 'vitest'
+import type { ReplayOverrideDoc } from '@deepseek-ai/dsh-llm-replay'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { connectFreshWorkspace, newEnglishPage, saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/turn-tail-actions', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+// Two goldens for the same message: parked mid-turn, then settled.
+const RUNNING_EXPECTED = join(SNAPSHOT_DIR, 'running.expected.md')
+const SETTLED_EXPECTED = join(SNAPSHOT_DIR, 'settled.expected.md')
+const MODE = webSnapshotMode()
+
+// The recording must carry text in the SAME assistant message as the tool
+// call; a Think-only step would leave nothing for the footer to attach to and
+// the scenario would pass against either implementation.
+const NARRATION = 'Reading the workspace now.'
+const PROMPT = `Begin your reply with the plain sentence "${NARRATION}" as text, and in that same message call the bash tool with the command "echo alpha". After the tool result, reply with the single word DONE and stop.`
+
+describe('web e2e: assistant IconActions wait for the turn to end', () => {
+  let scaffold: WebScaffold | undefined
+  let browser: Browser | undefined
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  let sessionEvents: SessionEvent[]
+  let sidecarDir: string | undefined
+
+  afterEach(async () => {
+    // close() carries the fixture-consumption tripwire, so its failure is the
+    // scenario's failure; run every teardown step, then rethrow what failed.
+    const failures: unknown[] = []
+    await browser?.close().catch((error: unknown) => failures.push(error))
+    browser = undefined
+    const closing = scaffold
+    scaffold = undefined
+    await closing?.close().catch((error: unknown) => failures.push(error))
+    if (sidecarDir !== undefined) await rm(sidecarDir, { recursive: true, force: true }).catch((error: unknown) => failures.push(error))
+    sidecarDir = undefined
+    if (failures.length === 1) throw failures[0]
+    if (failures.length > 1) throw new AggregateError(failures, 'turn-tail-actions teardown failed')
+  })
+
+  /** Boot scaffold + page, materializing the sidecar before the replay row installs. */
+  async function launch(buildOverride?: (sidecarHome: string) => ReplayOverrideDoc): Promise<void> {
+    sessionEvents = []
+    let overridePath: string | undefined
+    if (buildOverride !== undefined) {
+      sidecarDir = await mkdtemp(join(tmpdir(), 'dsh-web-e2e-sidecar-'))
+      overridePath = join(sidecarDir, 'replay.override.json')
+      await writeFile(overridePath, JSON.stringify(buildOverride(sidecarDir)))
+    }
+    scaffold = await launchWebScaffold(
+      MODE === 'record'
+        ? {}
+        : { replayFixture: FIXTURE, ...(overridePath === undefined ? {} : { replayOverride: overridePath }) },
+    )
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await newEnglishPage(browser)
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    await connectFreshWorkspace(page, scaffold.workspaceCwd)
+  }
+
+  /** Send the recorded prompt with the settled barrier pre-armed (returned wrapped so the caller can act mid-turn). */
+  async function sendPrompt(timeoutMs?: number): Promise<{ settled: ReturnType<WebScaffold['whenTurnSettled']> }> {
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = scaffold!.whenTurnSettled(timeoutMs)
+    await input.fill(PROMPT)
+    await input.press('Enter')
+    return { settled }
+  }
+
+  it.skipIf(MODE !== 'record')('records the narrate-then-call turn live through the composer', async () => {
+    await launch()
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-turn-tail-actions-record'))
+    const { settled } = await sendPrompt(180_000)
+    const sessionId = await settled
+    await recordFixture(scaffold!, sessionId, FIXTURE)
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('withholds the footer while the turn runs and grants it at turn/end', async () => {
+    expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    let marker = ''
+    // Patch the SECOND call: the first one delivers the narration and the tool
+    // call as recorded, so the park happens with a durable mid-turn message.
+    await launch((sidecarHome) => {
+      marker = join(sidecarHome, '.hang-ready')
+      return { patches: [{ at: 1, entry: { kind: 'hang', readyFile: marker } }] }
+    })
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-turn-tail-actions'))
+    // The barrier is armed before the park and awaited only after the stop
+    // click, so its budget must cover the whole parked phase: marker poll,
+    // three UI polls, and two captures with their stability windows. The
+    // replay default (30s) leaves no headroom on a slow runner.
+    const { settled } = await sendPrompt(120_000)
+    // The marker IS the synchronization: the second call is provably parked,
+    // so the first step's message and tool result are already durable.
+    await expect.poll(() => existsSync(marker), { timeout: 20_000 }).toBe(true)
+    await expect.poll(() => page.getByText(NARRATION, { exact: true }).count(), { timeout: 10_000 }).toBe(1)
+    await expect.poll(
+      () => page.getByRole('status').filter({ hasText: 'Deep diving...' }).isVisible(),
+      { timeout: 10_000 },
+    ).toBe(true)
+    // Only the user bubble owns a footer (clock + copy; user bubbles carry no
+    // branch action): the narration is not the answer yet.
+    const copyButtons = page.getByRole('button', { name: 'Copy' })
+    await expect.poll(() => copyButtons.count(), { timeout: 10_000 }).toBe(1)
+    expect(await page.getByRole('button', { name: 'Branch into a new conversation' }).count()).toBe(0)
+    await copyButtons.first().focus()
+    const running = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(RUNNING_EXPECTED, running, MODE)
+
+    // Closing the turn from the park is the state change under test: an
+    // aborted turn is durably closed, so its transcript tail (the frozen
+    // partial) takes the seat while the mid-turn narration keeps none.
+    await page.getByRole('button', { name: 'Stop generating' }).click()
+    await settled
+    expect(sessionEvents.filter(e => e.type === 'turn/end').map(e => e.data.reason.kind)).toEqual(['aborted'])
+    await expect.poll(() => copyButtons.count(), { timeout: 10_000 }).toBe(2)
+    await expect.poll(() => page.locator('[data-streaming="true"]').count(), { timeout: 10_000 }).toBe(0)
+    await copyButtons.last().focus()
+    const settledAria = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(SETTLED_EXPECTED, settledAria, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 120_000)
+
+  it.skipIf(MODE === 'record')('keeps a closed fixture inventory', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, ['running.expected.md', 'session.jsonl', 'settled.expected.md'])
+  })
+})