Merge branch 'master' into worktree-tasks-service-seam

apps/cli/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write
-README.md: 83b60ea72580facbceb155d053223567fdc8446b
-README.zh.md: ca25547f4c5ed2627e692187e6ca9e947f1b3eac
+README.md: 42d2a9641cf5d497c9aae45d9f60fce4498addb9
+README.zh.md: 0a62f8bb72e2cf2dbe045d28b81768bf4df800de

apps/cli/README.md

@@ -16,6 +16,8 @@ The TUI surface:
 
 The Web and headless surfaces boot one shared composition (`cordis.yml`): both treat the invoking directory as the default project and Workspace root, create named Workspaces beneath that root unless `--workspace-root <path>` overrides it, load applicable `AGENTS.md`/`CLAUDE.md` instructions into each agent-loop request prefix with a 65,536-byte render budget, and opt into first-message model titles. Headless differs only in listening on an OS-assigned port (parallel `dsh -p` runs never collide; the stderr-printed URL opens the live session in a browser). Both need the frontend dist and client bundles built (`pnpm run build && pnpm run build:web`).
 
+`DSH_TOOLS_MODE` selects the tool presentation mode for the whole Web/headless process: `native` (the schema default when unset), `code` (the `run_code`-only Code Mode wire), or `both`; any other value fails loud at boot through the `dsh-tools` config schema. It is a TEMPORARY seam — process-wide because Loader composition is static — and is removed once the web UI owns per-session tool-mode selection; the TUI surface ignores it (its config tree pins its own mode).
+
 ## Install (developer machine)
 
 Symlink the source-running launcher onto your PATH; it resolves the checkout through its own real path, so code changes apply on the next launch with no build step:

apps/cli/README.zh.md

@@ -16,6 +16,8 @@ TUI 界面：
 
 Web 和无头界面启动同一个共享组合（`cordis.yml`）：两者都将调用目录视为默认项目和 Workspace 根目录，除非通过 `--workspace-root <path>` 覆盖，否则会在该根目录下创建具名 Workspace；它们会把适用的 `AGENTS.md`/`CLAUDE.md` 指令加载到每个 agent-loop 请求前缀中，渲染预算为 65,536 字节，并选用首条消息模型标题。无头界面唯一的差异是监听操作系统分配的端口（并行 `dsh -p` 运行绝不冲突；stderr 打印的 URL 会在浏览器中打开实时会话）。两者都需要先构建前端 dist 和客户端 bundle（`pnpm run build && pnpm run build:web`）。
 
+`DSH_TOOLS_MODE` 为整个 Web／无头进程选择工具呈现模式：可选值为 `native`（未设置时的 schema 默认值）、`code`（仅含 `run_code` 的 Code Mode 协议接口）或 `both`；任何其他值都会经由 `dsh-tools` 配置 schema 在启动时明确报错。它是一个临时 seam：Loader 组合是静态的，因此该设置作用于整个进程；待 Web UI 负责逐会话工具模式选择后便会移除。TUI 界面会忽略该变量（其配置树固定了自身模式）。
+
 ## 安装（开发机）
 
 将从源码运行的启动器符号链接到 PATH 上；它通过自身真实路径解析 checkout，因此代码更改会在下次启动时生效，无需构建：

apps/cli/cordis.yml

@@ -44,6 +44,18 @@
 
 - id: tools
   name: '@deepseek-ai/dsh-tools'
+  config:
+    # TEMPORARY workaround: DSH_TOOLS_MODE (native|code|both) opts a whole dsh
+    # process into Code Mode while per-session tool-mode selection is being
+    # designed; unset keeps the schema default (native). Remove the env seam
+    # once the web UI owns the choice per session.
+    mode: !!js process.env.DSH_TOOLS_MODE
+
+# Code Mode substrate for the row above. Mounted unconditionally because
+# Loader metadata is static (no conditional rows): a native-mode boot only
+# registers the service — a worker thread spawns per run_code execution.
+- id: code-runtime
+  name: '@deepseek-ai/dsh-code-runtime-worker'
 
 - id: user-interaction
   name: '@deepseek-ai/dsh-user-interaction'
@@ -67,6 +79,11 @@
     apiKey: !!js process.env.DEEPSEEK_API_KEY
     baseURL: !!js process.env.DEEPSEEK_BASE_URL
 
+# Transient-failure recovery around the loop's model calls (same policy as
+# the TUI's agent-spine composition; defaults: 2 retries, 500ms→10s backoff).
+- id: llm-retry
+  name: '@deepseek-ai/dsh-llm-retry'
+
 - id: session-persistence-jsonl
   name: '@deepseek-ai/dsh-session-persistence-jsonl'
   config:

apps/cli/package.json

@@ -36,6 +36,7 @@
     "@deepseek-ai/dsh-client-ui-theme": "workspace:^",
     "@deepseek-ai/dsh-client-ui-trajectory": "workspace:^",
     "@deepseek-ai/dsh-client-ui-workspace": "workspace:^",
+    "@deepseek-ai/dsh-code-runtime-worker": "workspace:^",
     "@deepseek-ai/dsh-compact-basic": "workspace:^",
     "@deepseek-ai/dsh-frontend": "workspace:^",
     "@deepseek-ai/dsh-fs-local": "workspace:^",
@@ -44,6 +45,7 @@
     "@deepseek-ai/dsh-host-webserver": "workspace:^",
     "@deepseek-ai/dsh-llm": "workspace:^",
     "@deepseek-ai/dsh-llm-deepseek": "workspace:^",
+    "@deepseek-ai/dsh-llm-retry": "workspace:^",
     "@deepseek-ai/dsh-paths": "workspace:^",
     "@deepseek-ai/dsh-session": "workspace:^",
     "@deepseek-ai/dsh-session-persistence-jsonl": "workspace:^",

apps/web/tests/code-mode-fixture.snapshot.ts

@@ -0,0 +1,188 @@
+// @vitest-environment jsdom
+// Code Mode fixture snapshot over the BUILT client graph (the workspace-flow
+// idiom: real bundles via AppWebEntry, keyless FixtureApiClient transport).
+// Opens the fixture history session and pins the run_code turn's rendering:
+// the code-variant parent row titled by the model-authored description, its
+// three always-visible nested sub-rows (bash through the sample registration,
+// read through GenericToolCard, the failing read wearing the error state),
+// the expanded program body, and details-panel resolution of a sub-callId.
+import { readFileSync } from 'node:fs'
+import { join } from 'node:path'
+import { act, cleanup, fireEvent, screen, waitFor, within } from '@testing-library/react'
+import { afterEach, beforeEach, expect, it, vi } from 'vitest'
+import type { WebBootEntry } from '@deepseek-ai/dsh-client-modules/client'
+import { AppWebEntry } from '@deepseek-ai/dsh-client-web'
+
+const PLUGINS: readonly (WebBootEntry & { dir: string })[] = [
+  { id: '@deepseek-ai/dsh-client-connection', dir: 'connection', url: '/plugins/connection.js', rev: 'fx', inject: [], immediately: true },
+  { id: '@deepseek-ai/dsh-client-runtime', dir: 'runtime', url: '/plugins/runtime.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-connection'], immediately: true },
+  { id: '@deepseek-ai/dsh-client-ui-theme', dir: 'ui-theme', url: '/plugins/ui-theme.js', rev: 'fx', inject: [], immediately: true },
+  { id: '@deepseek-ai/dsh-client-locale', dir: 'locale', url: '/plugins/locale.js', rev: 'fx', inject: [], immediately: true },
+  { id: '@deepseek-ai/dsh-client-ui-layout', dir: 'ui-layout', url: '/plugins/ui-layout.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-runtime'] },
+  { id: '@deepseek-ai/dsh-client-ui-sidebar', dir: 'ui-sidebar', url: '/plugins/ui-sidebar.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-layout'] },
+  { id: '@deepseek-ai/dsh-client-ui-conversation', dir: 'ui-conversation', url: '/plugins/ui-conversation.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-layout'] },
+  {
+    id: '@deepseek-ai/dsh-client-ui-workspace',
+    dir: 'ui-workspace',
+    url: '/plugins/ui-workspace.js',
+    rev: 'fx',
+    inject: [
+      '@deepseek-ai/dsh-client-runtime',
+      '@deepseek-ai/dsh-client-ui-conversation',
+      '@deepseek-ai/dsh-client-ui-sidebar',
+    ],
+  },
+  { id: '@deepseek-ai/dsh-client-ui-trajectory', dir: 'ui-trajectory', url: '/plugins/ui-trajectory.js', rev: 'fx', inject: ['@deepseek-ai/dsh-client-ui-conversation'] },
+]
+
+const bundles = new Map(PLUGINS.map(plugin => [
+  plugin.url,
+  readFileSync(join(process.cwd(), 'packages/client', plugin.dir, 'lib/client.js'), 'utf8'),
+]))
+
+interface FixtureWindow extends Window {
+  __DSH_BOOT__?: { rev: string; entries: WebBootEntry[] }
+  __ModuleLoader__?: unknown
+}
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+const win = window as FixtureWindow
+let unmount: (() => void) | undefined
+
+beforeEach(() => {
+  localStorage.clear()
+  document.title = 'DeepSeek Harness'
+  vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+  vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+    setTimeout(() => { callback(0) }, 0) as unknown as number)
+  vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+})
+
+afterEach(() => {
+  act(() => { unmount?.() })
+  unmount = undefined
+  cleanup()
+  delete win.__DSH_BOOT__
+  delete win.__ModuleLoader__
+  delete (globalThis as Record<string, unknown>).__fxTiming
+  document.body.innerHTML = ''
+  document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+  document.title = ''
+  history.replaceState(null, '', '/')
+  vi.unstubAllGlobals()
+})
+
+/** Boot the complete built client graph against the populated fixture branch. */
+function boot(): void {
+  history.replaceState(null, '', '/?fixture')
+  const root = document.createElement('div')
+  root.id = 'root'
+  document.body.appendChild(root)
+  win.__DSH_BOOT__ = { rev: 'fx', entries: PLUGINS.map(({ dir: _dir, ...plugin }) => plugin) }
+  act(() => {
+    const entry = new AppWebEntry(root, {
+      fetchBundle: (url) => {
+        const code = bundles.get(url)
+        return code === undefined ? Promise.reject(new Error(`missing built bundle ${url}`)) : Promise.resolve(code)
+      },
+      executeBundle: (code) => { (0, eval)(code) },
+    })
+    void entry.run()
+    unmount = () => { entry.dispose() }
+  })
+}
+
+/** Collapse decorative whitespace while preserving the text a user sees. */
+function visibleText(element: Element): string {
+  return (element.textContent ?? '').replace(/\s+/g, ' ').trim()
+}
+
+/** Open the fixture history session (the alpha log carrying the run_code turn) and scroll to its tail. */
+async function openFixtureSession(): Promise<void> {
+  const tree = await screen.findByRole('tree', { name: 'Sessions' }, { timeout: 10_000 })
+  const group = within(tree).getByText('4 sessions').closest<HTMLElement>('[role="treeitem"]')
+  if (group === null) throw new Error('fixture Workspace group missing')
+  if (group.getAttribute('aria-expanded') === 'false') {
+    fireEvent.click(within(group).getByText('fixture'))
+    await waitFor(() => {
+      expect(within(tree).getByText('4 sessions').closest('[role="treeitem"]')?.getAttribute('aria-expanded')).toBe('true')
+    })
+  }
+  const session = await within(tree).findByText('Fixture 历史会话')
+  fireEvent.click(session)
+  await waitFor(() => {
+    expect(document.querySelector('[data-variant="code"]')).not.toBeNull()
+  }, { timeout: 10_000 })
+}
+
+it('renders the fixture run_code turn: code parent row, nested sub-rows, error state', async () => {
+  boot()
+  await openFixtureSession()
+
+  const codeRoot = document.querySelector('[data-variant="code"]')
+  if (codeRoot === null) throw new Error('code-variant row missing')
+  const nest = codeRoot.closest('[class*="callRow"]')?.querySelector('[data-subcalls]')
+  if (nest === undefined || nest === null) throw new Error('sub-call nest missing under the code row')
+
+  expect({
+    parentRow: visibleText(codeRoot),
+    // The three sub-rows in dispatch order: bash rides the sample plugin's
+    // keyed registration (the same one a native top-level bash row uses),
+    // both reads ride GenericToolCard.
+    bashSample: nest.querySelector('[data-sample="bash-global"]') !== null,
+    subRows: [...nest.querySelectorAll(':scope > *')].map(visibleText),
+    errorSubRow: nest.querySelector('[data-state="error"]') !== null,
+  }).toMatchInlineSnapshot(`
+    {
+      "bashSample": true,
+      "errorSubRow": true,
+      "parentRow": "CodeRead the notes files and summarize",
+      "subRows": [
+        "$List notes",
+        "Readnotes/demo.txt",
+        "Readnotes/missing.txt",
+      ],
+    }
+  `)
+})
+
+it('expands the code row into the program body and resolves a sub-row through the details panel', async () => {
+  boot()
+  await openFixtureSession()
+
+  // Expand: the leading control reveals the program verbatim.
+  const codeRoot = document.querySelector('[data-variant="code"]')
+  if (codeRoot === null) throw new Error('code-variant row missing')
+  const toggle = codeRoot.querySelector('button[aria-expanded]')
+  if (toggle === null) throw new Error('code row expand control missing')
+  fireEvent.click(toggle)
+  await screen.findByText(/const listing = await tools\.bash/)
+
+  // Sub-row click → details panel resolves the sub-callId with FULL output.
+  const nest = document.querySelector('[data-subcalls]')
+  if (nest === null) throw new Error('sub-call nest missing')
+  const bashRow = nest.querySelector('[data-sample="bash-global"]')
+  if (bashRow === null) throw new Error('bash sample sub-row missing')
+  fireEvent.click(bashRow)
+  const details = await screen.findByText('Input')
+  const panel = details.closest('[class*="root"]')
+  if (panel === null) throw new Error('details panel missing')
+  expect({
+    title: visibleText(within(panel as HTMLElement).getByText('bash')),
+    inputEchoesArgs: visibleText(panel).includes('ls notes'),
+    outputComplete: visibleText(panel).includes('demo.txt new-demo.txt')
+      || visibleText(panel).includes('demo.txt\nnew-demo.txt')
+      || (panel.textContent ?? '').includes('demo.txt\nnew-demo.txt'),
+  }).toMatchInlineSnapshot(`
+    {
+      "inputEchoesArgs": true,
+      "outputComplete": true,
+      "title": "bash",
+    }
+  `)
+})

apps/web/tests/code-mode-round.e2e.ts

@@ -0,0 +1,144 @@
+// Web e2e scenario: a Code Mode round trip. The scaffold boots the SAME
+// shipped tree with the tools row patched to mode: code (the run_code-only
+// wire), a real chromium sends a prompt engineered to elicit one run_code
+// program with several sub-calls, and the UI must render the code-variant
+// parent row with its always-visible nested sub-rows — each sub-row the same
+// component a native call renders through — plus details-panel resolution for
+// a clicked sub-row. Drive steps wait only on generic completion
+// (whenTurnSettled); assertion steps run in replay/refresh only.
+// Record: DSH_SNAPSHOT=record rewrites session.jsonl, then a keyless
+// DSH_SNAPSHOT=refresh regenerates ui.expected.md.
+import { readFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const FIXTURE = fileURLToPath(new URL('./snapshots/code-mode-round/session.jsonl', import.meta.url))
+const UI_EXPECTED = fileURLToPath(new URL('./snapshots/code-mode-round/ui.expected.md', import.meta.url))
+const MODE = webSnapshotMode()
+
+// The scenario's one drive prompt: elicits one program with a bash sub-call
+// and a failing read the program tolerates — the sub-row set the assertions
+// (and the PR gif) need. Never asserted against model prose.
+const PROMPT = '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.'
+
+describe('web e2e: Code Mode round renders nested sub-calls', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  const sessionEvents: SessionEvent[] = []
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({
+      toolsMode: 'code',
+      ...(MODE === 'record' ? {} : { replayFixture: FIXTURE, paceMs: 15 }),
+    })
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('drives the recorded prompt to a settled turn (all modes)', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-code-mode-drive'))
+    if (MODE !== 'record') {
+      // Drift guard: the committed fixture must carry exactly the drive prompt.
+      expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    }
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = scaffold.whenTurnSettled()
+    await input.fill(PROMPT)
+    await input.press('Enter')
+    const sessionId = await settled
+    if (MODE === 'record') {
+      await recordFixture(scaffold, sessionId, FIXTURE)
+    }
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('the durable log carries run_code with full-content sub-dispatches', () => {
+    // Wire discipline: code mode collapsed the call surface to run_code.
+    const calls = sessionEvents.filter(event => event.type === 'tool/call')
+    expect(calls.length).toBeGreaterThanOrEqual(1)
+    expect(new Set(calls.map(call => (call.data as { name: string }).name))).toEqual(new Set(['run_code']))
+    // Sub-dispatches logged with the complete tool/result vocabulary.
+    const dispatches = sessionEvents.filter(event => (event.type as string) === 'tool/code-dispatch')
+    expect(dispatches.length).toBeGreaterThanOrEqual(2)
+    for (const dispatch of dispatches) {
+      const data = dispatch.data as unknown as {
+        parentCallId: string
+        subCallId: string
+        name: string
+        isError: boolean
+        content: { type: string }[]
+      }
+      expect(data.subCallId.startsWith(`${data.parentCallId}:code:`)).toBe(true)
+      expect(Array.isArray(data.content)).toBe(true)
+      expect(typeof data.isError).toBe('boolean')
+    }
+    const bash = dispatches.find(dispatch => (dispatch.data as { name: string }).name === 'bash')
+    expect(bash).toBeDefined()
+    const bashContent = (bash!.data as { content: { type: string; text?: string }[] }).content
+    expect(bashContent.filter(block => block.type === 'text').map(block => block.text).join('')).toContain('CODE_ROUND_OK')
+  })
+
+  it.skipIf(MODE === 'record')('renders the code parent row with always-visible nested sub-rows', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-code-mode-rows'))
+    await expect.poll(() => page.getByText('DONE', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    // The parent run_code row wears the code variant with the model-authored
+    // description as its summary (the PR1 presentCall contract).
+    const codeRow = page.locator('[data-variant="code"]').first()
+    await codeRow.waitFor({ timeout: 10_000 })
+    // Nested rows are visible WITHOUT any expand interaction, inside the
+    // sub-call nest, each rendered by the same components as native rows:
+    // the bash sub-call landed in the bash sample registration.
+    const nest = page.locator('[data-subcalls]').first()
+    await nest.waitFor({ timeout: 10_000 })
+    expect(await nest.locator('[data-sample="bash-global"]').count()).toBeGreaterThanOrEqual(1)
+    // The failing read sub-call wears the same error state a native failed
+    // row wears (the recorded program tolerates a read of missing.txt).
+    expect(await nest.locator('[data-state="error"]').count()).toBeGreaterThanOrEqual(1)
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('a sub-row click opens the details panel on the sub-call material', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-code-mode-details'))
+    const nest = page.locator('[data-subcalls]').first()
+    await nest.locator('[data-sample="bash-global"]').first().click()
+    // The details column opens (width > 0) and shows the sub-call's complete
+    // output — the full-content log contract, no truncation marker anywhere.
+    await page.waitForFunction(() => {
+      const frame = document.querySelector('[class*="frame"]')
+      if (frame === null) return false
+      return Number(getComputedStyle(frame).gridTemplateColumns.split(' ').pop()!.replace('px', '')) > 0
+    }, undefined, { timeout: 10_000 })
+    await expect.poll(() => page.getByText('CODE_ROUND_OK', { exact: false }).count(), { timeout: 5_000 })
+      .toBeGreaterThanOrEqual(1)
+  })
+
+  it.skipIf(MODE === 'record')('matches the conversation aria golden with stable anchors', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-code-mode-aria'))
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(UI_EXPECTED, snapshot, MODE)
+  })
+
+  it.skipIf(MODE === 'record')('stayed clean: no page errors, no reconnect churn', () => {
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  })
+})

apps/web/tests/lifecycle-chrome.e2e.ts

@@ -0,0 +1,163 @@
+// Web e2e scenarios: lifecycle & chrome — the workspace-aware first-send
+// flow over the real wire, reload recovery, and the dark-mode token cascade.
+// One tiny recorded turn (text-only) drives the whole spec: the empty-state
+// hero materializes a real Workspace + Session on first send (the jsdom
+// workspace-flow suite pins the object-layer state machine over the fixture
+// client; THIS spec pins the same flow through HTTP RPC + SSE + the host
+// gateway), reload replays everything from the log (zero further model
+// calls), and the theme scenario proves the shipped dark palette actually
+// cascades: attribute -> alias token flip -> painted surface change. Per the
+// lane's scope ruling there is no theme/layout golden (aria is color-blind);
+// the hero's waiting state gets the one golden here.
+import { readFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  acknowledgeReloadConnectionLoss, assertFixtureInventory, captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/lifecycle-chrome', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+const HERO_EXPECTED = join(SNAPSHOT_DIR, 'hero.expected.md')
+// Post-reload golden: the same settled conversation rebuilt purely from
+// persistence + history — byte-equal rendering is exactly the recovery claim.
+const RELOADED_EXPECTED = join(SNAPSHOT_DIR, 'reloaded.expected.md')
+const MODE = webSnapshotMode()
+
+const PROMPT = 'Reply with the single word LIGHTHOUSE and stop.'
+
+describe('web e2e: lifecycle & chrome (workspace flow / reload / dark mode)', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  const sessionEvents: SessionEvent[] = []
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold(MODE === 'record' ? {} : { replayFixture: FIXTURE, paceMs: 15 })
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('sends the first prompt from the empty-state hero (all modes)', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-lifecycle-send'))
+    if (MODE !== 'record') {
+      expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    }
+    // The blank frame renders the hero, not the resident composer: the
+    // headline plus the guidance placeholder are the empty state's anchors.
+    await expect.poll(() => page.getByText("Let's start building", { exact: false }).count(), { timeout: 15_000 }).toBe(1)
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    if (MODE !== 'record') {
+      // Golden of the hero's stable waiting state (captured before any send;
+      // the conversation-region goldens belong to the other scenarios).
+      const snapshot = await captureStableAria(page, '[class*="frame"]', scaffold.workspaceCwd)
+      await compareOrRefreshGolden(HERO_EXPECTED, snapshot, MODE)
+    }
+    const settled = scaffold.whenTurnSettled()
+    await input.fill(PROMPT)
+    await input.press('Enter')
+    const sessionId = await settled
+    if (MODE === 'record') {
+      await recordFixture(scaffold, sessionId, FIXTURE)
+    }
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('materialized a real Workspace and Session over the wire', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-lifecycle-materialize'))
+    // Browser: the sidebar tree now carries the auto-created workspace group
+    // with its one session, and the opened session is the selected row.
+    await expect.poll(() => page.getByText('1 session', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    await expect.poll(() => page.locator('[role="treeitem"][aria-selected="true"]').count(), { timeout: 10_000 }).toBe(1)
+    await expect.poll(() => page.getByText('LIGHTHOUSE', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    // Host: the session's durable header cwd is the workspace flow's
+    // create-by-name target (<workspaceRoot>/workspace, the composer's
+    // default draft name) — the proof the send went through workspace
+    // materialization rather than a bare default-cwd session.
+    const cwds = scaffold.ctx.sessions.list().map(session => session.header.cwd)
+    expect(cwds).toEqual([join(scaffold.workspaceCwd, 'workspace')])
+    const turnEnds = sessionEvents.filter(e => e.type === 'turn/end')
+    expect(turnEnds).toHaveLength(1)
+    expect((turnEnds[0] as SessionEvent & { data: { reason: { kind: string } } }).data.reason.kind).toBe('completed')
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('recovers the whole surface across a reload from the log alone', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-lifecycle-reload'))
+    // Fold a layout preference into the same reload: collapse the sidebar
+    // (persisted under dsh.layout.panels) before reloading.
+    await page.getByRole('button', { name: 'Collapse sidebar' }).click()
+    await expect.poll(() => page.getByRole('button', { name: 'Open sidebar' }).count(), { timeout: 10_000 }).toBe(1)
+    const warningStart = tripwire.warnings.length
+    await page.reload({ waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    acknowledgeReloadConnectionLoss(tripwire, warningStart)
+    // Layout persisted: the sidebar comes back collapsed.
+    await expect.poll(() => page.getByRole('button', { name: 'Open sidebar' }).count(), { timeout: 10_000 }).toBe(1)
+    // Selection persisted (dsh.sessions.current) and history replayed: the
+    // recorded turn re-renders from session.history with zero model calls —
+    // the replay cursor was fully consumed before the reload, so any stray
+    // request would fail the scenario loudly at close().
+    await expect.poll(() => page.getByText('LIGHTHOUSE', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    // Expand back and confirm the tree still lists the materialized session.
+    await page.getByRole('button', { name: 'Open sidebar' }).click()
+    await expect.poll(() => page.locator('[role="treeitem"][aria-selected="true"]').count(), { timeout: 10_000 }).toBe(1)
+    // Golden of the recovered conversation region: rebuilt from the log, it
+    // must render the same settled transcript the live turn produced.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(RELOADED_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it.skipIf(MODE === 'record')('cascades the dark theme from the body attribute to painted surfaces', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-lifecycle-dark'))
+    // This scenario pins the ThemeService's DOM contract seam directly (the
+    // body[data-ds-dark-theme] attribute -> stylesheet cascade); the REAL
+    // user gesture above it (Settings -> Appearance cubes) is owned by
+    // settings-chrome.e2e.ts. Driving the attribute here keeps the cascade
+    // pinned independently of the settings surface's own lifecycle.
+    const sample = async (): Promise<{ token: string; sidebarBg: string; bodyBg: string }> =>
+      await page.evaluate(() => {
+        const sidebar = document.querySelector('[class*="sidebar"], [class*="rail"]') ?? document.body
+        return {
+          token: getComputedStyle(document.body).getPropertyValue('--dsw-alias-bg-base').trim(),
+          sidebarBg: getComputedStyle(sidebar).backgroundColor,
+          bodyBg: getComputedStyle(document.body).backgroundColor,
+        }
+      })
+    const light = await sample()
+    await page.evaluate(() => { document.body.setAttribute('data-ds-dark-theme', '') })
+    const dark = await sample()
+    // The alias token itself must flip — the cascade's root fact.
+    expect(dark.token).not.toBe(light.token)
+    // And a real painted surface must consume it (not just variables in a
+    // void): at least one of the sampled backgrounds repaints.
+    expect(dark.sidebarBg !== light.sidebarBg || dark.bodyBg !== light.bodyBg).toBe(true)
+    // Removing the attribute restores the light values exactly (the palettes
+    // live in one stylesheet; activation is attribute-only by design).
+    await page.evaluate(() => { document.body.removeAttribute('data-ds-dark-theme') })
+    const restored = await sample()
+    expect(restored).toEqual(light)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
+    expect(tripwire.warnings).toEqual([])
+    await assertFixtureInventory(SNAPSHOT_DIR, ['session.jsonl', 'hero.expected.md', 'reloaded.expected.md'])
+  })
+})

apps/web/tests/live-interactions.e2e.ts

@@ -0,0 +1,207 @@
+// Web e2e scenarios: live-turn interactions — cancellation, error surfacing,
+// and transient-retry recovery, all through the real composition and wire.
+// The model seam is dsh-llm-replay with override sidecars: `hang` (+ a
+// readyFile marker) makes mid-stream cancel deterministic by construction,
+// `throw` entries express provider failures by stable code, and `{ patches }`
+// augmentation injects a transient throw before the recorded success so
+// llm-retry's recovery is proven end-to-end in the browser. Sidecar CONTENT
+// is authored here (single-sourced against the fixture via deriveReplayScript
+// — no committed copy of recorded chunks); the file is a per-run artifact in
+// the temp workspace. One recorded base fixture serves all three scenarios.
+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 { deriveReplayScript, parseSessionLog } from '@deepseek-ai/dsh-llm-replay'
+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 { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/live-interactions', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+// One golden per interactive end-state: what the user is left looking at
+// after cancel, after a non-retryable failure (pins the FIXME(web-error-surface)
+// gap as a reviewable artifact: NO error copy in the tree), and after retry
+// recovery — three genuinely different terminal surfaces of one fixture.
+const CANCEL_EXPECTED = join(SNAPSHOT_DIR, 'cancel.expected.md')
+const ERROR_EXPECTED = join(SNAPSHOT_DIR, 'error-auth.expected.md')
+const RETRY_EXPECTED = join(SNAPSHOT_DIR, 'retry.expected.md')
+const MODE = webSnapshotMode()
+
+// The recorded base: one text-only turn whose derived script the sidecars
+// patch. Kept deliberately tool-free so the derived script is exactly one
+// model call.
+const PROMPT = 'Reply with a one-sentence description of event sourcing, then stop.'
+
+/** turn/end reasons observed, in order. */
+function turnEndReasons(events: SessionEvent[]): string[] {
+  return events
+    .filter(e => e.type === 'turn/end')
+    .map(e => (e as SessionEvent & { data: { reason: { kind: string } } }).data.reason.kind)
+}
+
+describe('web e2e: live-turn interactions (cancel / error / retry)', () => {
+  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 () => {
+    // scaffold.close() failures MUST fail the scenario: assertConsumed() is
+    // the fixture-drift tripwire and cleanup problems are real defects. Run
+    // every teardown step regardless, 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, 'live-interactions teardown failed')
+  })
+
+  /** Boot scaffold + page with an optional override doc materialized per run. */
+  async function launch(buildOverride?: (sidecarHome: string) => ReplayOverrideDoc): Promise<void> {
+    sessionEvents = []
+    let overridePath: string | undefined
+    if (buildOverride !== undefined) {
+      // The sidecar CONTENT is authored in this spec; the file is a per-run
+      // artifact minted in a spec-owned temp dir. It must exist BEFORE the
+      // scaffold boots — installLlmReplay resolves the script at install.
+      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({
+      replayFixture: FIXTURE,
+      ...(overridePath === undefined ? {} : { replayOverride: overridePath }),
+    })
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }
+
+  /**
+   * Type the recorded prompt and send, with the settled barrier pre-armed.
+   * Returned WRAPPED ({ settled }) — a bare returned promise would be
+   * flattened by the caller's await, blocking on turn/end before the caller
+   * can act mid-turn (the cancel scenario's whole point).
+   */
+  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 base fixture live through the composer', async () => {
+    await launch()
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-interactions-record'))
+    const { settled } = await sendPrompt(180_000)
+    const sessionId = await settled
+    await recordFixture(scaffold!, sessionId, FIXTURE)
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('cancels a hung stream deterministically via the readyFile marker', async () => {
+    expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    let marker = ''
+    await launch((sidecarHome) => {
+      marker = join(sidecarHome, '.hang-ready')
+      return { patches: [{ at: 0, entry: { kind: 'hang', readyFile: marker } }] }
+    })
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-cancel'))
+    const { settled } = await sendPrompt()
+    // The marker IS the synchronization: the stream is provably parked in the
+    // hang (prefix chunks delivered to the loop) before the stop click.
+    await expect.poll(() => existsSync(marker), { timeout: 15_000 }).toBe(true)
+    await page.getByRole('button', { name: 'Stop generating' }).click()
+    await settled
+    expect(turnEndReasons(sessionEvents).at(-1)).toBe('aborted')
+    // Composer recovered; no streaming node lingers.
+    await expect.poll(() => page.locator('textarea').first().isEnabled(), { timeout: 10_000 }).toBe(true)
+    expect(await page.locator('[data-streaming="true"]').count()).toBe(0)
+    // Golden of the aborted end-state: the prompt bubble plus the frozen
+    // partial ('partial' is the hang entry's replayed prefix) and no more.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(CANCEL_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 120_000)
+
+  it.skipIf(MODE === 'record')('surfaces a non-retryable AUTH failure without retrying', async () => {
+    await launch(() => ({
+      patches: [{ at: 0, entry: { kind: 'throw', chunks: [], message: 'invalid api key', code: 'AUTH' } }],
+    }))
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-error-auth'))
+    const { settled } = await sendPrompt()
+    await settled
+    expect(turnEndReasons(sessionEvents).at(-1)).toBe('error')
+    // AUTH is outside llm-retry's retryable set: no retry record.
+    expect(sessionEvents.filter(e => e.type === 'llm/retry').length).toBe(0)
+    // Product gap found by this lane, pinned as-is: the client consumes no
+    // agent/error frames and a pre-chunk failure freezes no partial, so THIS
+    // failure renders no error copy anywhere — the user sees the send simply
+    // stop. FIXME(web-error-surface): assert visible error text here once the
+    // web UI grows an error rendering; until then the pinned contract is
+    // "no crash, composer recovers, turn logged as error".
+    await expect.poll(() => page.locator('textarea').first().isEnabled(), { timeout: 10_000 }).toBe(true)
+    expect(await page.locator('[data-streaming="true"]').count()).toBe(0)
+    // Golden of the same gap: the prompt bubble alone, no error copy in the
+    // tree — the diff that changes when web-error-surface lands.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(ERROR_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 120_000)
+
+  it.skipIf(MODE === 'record')('recovers a transient SERVER failure through llm-retry and completes', async () => {
+    const derived = deriveReplayScript(parseSessionLog(await readFile(FIXTURE, 'utf8')))
+    expect(derived).toHaveLength(1)
+    await launch(() => ({
+      patches: [
+        { at: 0, entry: { kind: 'throw', chunks: [], message: 'upstream 503', code: 'SERVER' } },
+        // Append the fixture's own success as the retry attempt — single-
+        // sourced from the recording, never copied into a committed sidecar.
+        { at: 1, entry: derived[0]! },
+      ],
+    }))
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-retry'))
+    // llm-retry backs off ~500ms before the second attempt.
+    const { settled } = await sendPrompt(60_000)
+    await settled
+    expect(turnEndReasons(sessionEvents).at(-1)).toBe('completed')
+    // The durable retry record proves the second attempt (request/header logs
+    // only on change, so attempt count is invisible there).
+    expect(sessionEvents.filter(e => e.type === 'llm/retry').length).toBeGreaterThanOrEqual(1)
+    await expect.poll(() => page.getByText('event sourcing', { exact: false }).count(), { timeout: 10_000 }).toBeGreaterThan(0)
+    // Golden of the recovered end-state: indistinguishable from a clean
+    // completion — retries are deliberately invisible in the transcript.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold!.workspaceCwd)
+    await compareOrRefreshGolden(RETRY_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 120_000)
+
+  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, [
+      'session.jsonl', 'cancel.expected.md', 'error-auth.expected.md', 'retry.expected.md',
+    ])
+  })
+})

apps/web/tests/navigation-panes.e2e.ts

@@ -0,0 +1,190 @@
+// Web e2e scenarios: navigation & panes — the view tabs (Trajectory /
+// Waterfall), the details column, and sidebar search, all over ONE rich
+// two-turn seeded fixture rendered purely from the log (the seeded-history
+// pattern: zero model calls in replay, so every surface here is the client
+// fold + host history RPC, not replay binding). The seed is recorded live
+// under the standard discipline: turn 1 produces a bash call plus two
+// parallel reads in one assistant message (tool-call density for the
+// trajectory/waterfall lanes and a details-capable bash row), turn 2 a
+// markdown-rich reply (a second turn so the waterfall has two lanes).
+import { mkdir, readFile, writeFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import { parseSessionLog } from '@deepseek-ai/dsh-llm-replay'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, seedSession, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/navigation-panes', import.meta.url))
+const SEED = join(SNAPSHOT_DIR, 'seed.jsonl')
+const TRAJECTORY_EXPECTED = join(SNAPSHOT_DIR, 'trajectory.expected.md')
+const WATERFALL_EXPECTED = join(SNAPSHOT_DIR, 'waterfall.expected.md')
+const DETAILS_EXPECTED = join(SNAPSHOT_DIR, 'details-open.expected.md')
+const MODE = webSnapshotMode()
+const SEED_ID = 'navigation-panes-web-e2e'
+
+// Turn 1 leads with a distinctive word: the session-title fallback takes the
+// first words of the first message, so the sidebar-search scenario has a
+// known-matching query ('navscenario') without depending on a live title call.
+const PROMPT_TURN1 = 'NavScenario: first run bash to print exactly NAVIGATION_OK, then read nav-a.md and nav-b.md using two read calls in ONE assistant message, then reply with the single word FIRST_DONE and stop.'
+const PROMPT_TURN2 = 'Reply in markdown with: a level-2 heading "Navigation Summary", a bulleted list of exactly two items, and a fenced code block containing echo WATERFALL. Then stop.'
+
+describe('web e2e: navigation & panes over a rich seeded session', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({})
+    // The workspace-aware flow runs sessions in <workspaceRoot>/workspace;
+    // the read targets must live in that session cwd (pre-creation is safe:
+    // create-by-name adopts an existing directory).
+    const sessionCwd = join(scaffold.workspaceCwd, 'workspace')
+    await mkdir(sessionCwd, { recursive: true })
+    await writeFile(join(sessionCwd, 'nav-a.md'), '# alpha nav\n')
+    await writeFile(join(sessionCwd, 'nav-b.md'), '# beta nav\n')
+    if (MODE !== 'record') {
+      const raw = await readFile(SEED, 'utf8')
+      expect(fixtureUserPrompts(raw), 'seed fixture must carry exactly the two drive prompts')
+        .toEqual([PROMPT_TURN1, PROMPT_TURN2])
+      await seedSession(scaffold, raw, SEED_ID)
+    }
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it.skipIf(MODE !== 'record')('records the two-turn seed live through the composer', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-record'))
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    let sessionId: Awaited<ReturnType<WebScaffold['whenTurnSettled']>> | undefined
+    for (const prompt of [PROMPT_TURN1, PROMPT_TURN2]) {
+      const settled = scaffold.whenTurnSettled()
+      // Turn 2 types into the same composer once turn 1 unlocks it.
+      await expect.poll(() => input.isEnabled(), { timeout: 15_000 }).toBe(true)
+      await input.fill(prompt)
+      await input.press('Enter')
+      sessionId = await settled
+    }
+    await recordFixture(scaffold, sessionId!, SEED)
+    // Fixture honesty: the recording must carry the shape the replay
+    // scenarios assert on — three calls in turn 1 and two closed turns.
+    const recorded = parseSessionLog(await readFile(SEED, 'utf8'))
+    expect(recorded.filter(e => e.type === 'turn/end')).toHaveLength(2)
+    const calls = recorded.filter((e): e is SessionEvent & { data: { name: string } } => e.type === 'tool/call')
+    expect(calls.map(e => e.data.name).sort()).toEqual(['bash', 'read', 'read'])
+  }, 400_000)
+
+  it.skipIf(MODE === 'record')('opens the seeded session and renders both turns from the log', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-open'))
+    // Expand the collapsed group row, then open the revealed session row.
+    const groupRow = page.locator('[role="treeitem"]').first()
+    await groupRow.waitFor({ timeout: 15_000 })
+    await groupRow.click()
+    const sessionRow = page.locator('[role="treeitem"]').nth(1)
+    await sessionRow.waitFor({ timeout: 10_000 })
+    await sessionRow.click()
+    await expect.poll(() => page.getByText('FIRST_DONE', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    await expect.poll(() => page.getByRole('heading', { name: 'Navigation Summary' }).count(), { timeout: 15_000 }).toBe(1)
+  }, 90_000)
+
+  it.skipIf(MODE === 'record')('filters the sidebar tree by title through the search box', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-search'))
+    // Runs after the session is open: a cold summary carries no title (the
+    // sidebar shows the cwd basename), and the durable title lands with the
+    // attach subscription's baseline — which is itself worth pinning: search
+    // matches the title the user sees, not a hidden cold field.
+    const search = page.getByPlaceholder('Search name, keywords', { exact: false })
+    await expect.poll(() => page.getByText('NavScenario', { exact: false }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    // Negative: a garbage query empties the tree (group rows hide too).
+    await search.fill('zzzqx-no-such-session')
+    await expect.poll(() => page.locator('[role="treeitem"]').count(), { timeout: 10_000 }).toBe(0)
+    // Positive: a title word narrows to the matched session + its group,
+    // force-expanded by search mode (case-insensitive client-side filter).
+    await search.fill('navscenario')
+    await expect.poll(() => page.locator('[role="treeitem"]').count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(2)
+    // Clear restores the unfiltered tree.
+    await page.getByRole('button', { name: 'Clear search' }).click()
+    await expect.poll(() => search.inputValue(), { timeout: 5_000 }).toBe('')
+    await expect.poll(() => page.locator('[role="treeitem"]').count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('renders the trajectory tab with turn sections and step cells', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-trajectory'))
+    await page.getByRole('tab', { name: 'Trajectory' }).click()
+    // Two sticky turn sections; turn 1's step group summarizes its tool mix
+    // (bash + the two parallel reads collapse to 'bash read×2').
+    await expect.poll(() => page.getByText('Turn 1', { exact: true }).count(), { timeout: 15_000 }).toBe(1)
+    await expect.poll(() => page.getByText('Turn 2', { exact: true }).count(), { timeout: 10_000 }).toBe(1)
+    await expect.poll(() => page.getByText('bash read×2', { exact: false }).count(), { timeout: 10_000 }).toBe(1)
+    const snapshot = (await captureStableAria(page, '[class*="viewArea"]', scaffold.workspaceCwd))
+      .split(SEED_ID).join('{{seededId}}')
+    await compareOrRefreshGolden(TRAJECTORY_EXPECTED, snapshot, MODE)
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('renders the waterfall tab with span stats and one lane per span', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-waterfall'))
+    await page.getByRole('tab', { name: 'Waterfall' }).click()
+    // The stats header rides the waterfall body. The span fold counts THREE
+    // spans for this two-turn log: only assistant/steering nodes carry a turn
+    // number, so the first user message lands in a turn-0 prologue span (a
+    // P-I placeholder shape — pinned as-is; real spans are deferred to
+    // P-III per the view's deviation ledger). Calls: bash + two reads.
+    await expect.poll(() => page.getByText(/3 turns · \d+ steps · 3 tool calls/).count(), { timeout: 15_000 }).toBe(1)
+    // One lane per span, tagged by turn number, prologue included.
+    for (const tag of ['turn 0', 'turn 1', 'turn 2']) {
+      await expect.poll(() => page.getByText(tag, { exact: true }).count(), { timeout: 10_000 }).toBe(1)
+    }
+    const snapshot = (await captureStableAria(page, '[class*="viewArea"]', scaffold.workspaceCwd))
+      .split(SEED_ID).join('{{seededId}}')
+    await compareOrRefreshGolden(WATERFALL_EXPECTED, snapshot, MODE)
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('opens the details column from the bash row and closes it', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-navigation-details'))
+    await page.getByRole('tab', { name: 'Chat' }).click()
+    // The bash toolview row routes its click to openDetails (read rows are
+    // expand-in-place instead — the seeded-history scenario owns that fold).
+    const bashRow = page.locator('[data-sample="bash-global"]').first()
+    await bashRow.waitFor({ timeout: 15_000 })
+    // Open/closed is the frame's collapsed attribute: the column collapses to
+    // width 0 but its subtree deliberately never unmounts (hidden, not
+    // absent), so element presence/visibility cannot express the state.
+    const frame = page.locator('[data-details-collapsed], [class*="frame"]').first()
+    expect(await frame.getAttribute('data-details-collapsed')).not.toBeNull()
+    await bashRow.click()
+    await expect.poll(() => frame.getAttribute('data-details-collapsed'), { timeout: 10_000 }).toBeNull()
+    // The open panel shows the selected call's name, arguments, and durable
+    // result (NAVIGATION_OK appears in the chat row too, hence >= 2 total).
+    await expect.poll(() => page.getByText('NAVIGATION_OK', { exact: false }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(2)
+    // Golden of the open panel: tool name header, Input args, Output result.
+    const snapshot = (await captureStableAria(page, '[class*="detailsCol"]', scaffold.workspaceCwd))
+      .split(SEED_ID).join('{{seededId}}')
+    await compareOrRefreshGolden(DETAILS_EXPECTED, snapshot, MODE)
+    await page.getByRole('button', { name: '关闭详情' }).click()
+    await expect.poll(() => frame.getAttribute('data-details-collapsed'), { timeout: 10_000 }).not.toBeNull()
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('issued zero model calls and stayed clean', async () => {
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+    await assertFixtureInventory(SNAPSHOT_DIR, [
+      'seed.jsonl', 'trajectory.expected.md', 'waterfall.expected.md', 'details-open.expected.md',
+    ])
+  })
+})

apps/web/tests/question-composer.e2e.ts

@@ -0,0 +1,107 @@
+// Web e2e scenario: the resident question composer. The shipped composition
+// already exposes ask_user_question (the ui-question row's node half mounts
+// the tool), so a recorded turn where the model asks blocks mid-turn on the
+// real userInteraction seam: the composer renders in the browser, the test
+// answers through it, and the turn completes with the answer in the log.
+// Replay is fully deterministic — the question content arrives from replayed
+// chunks, the composer wait is real, and the answer click is the test's own
+// gesture (the ONE place a drive step legitimately reacts to model content:
+// the turn cannot complete without it, in record and replay alike).
+import { readFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/question-composer', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+const UI_EXPECTED = join(SNAPSHOT_DIR, 'ui.expected.md')
+// Second golden: the answered transcript — the question resolved into its
+// tool round trip and the final reply, the state the waiting golden cannot see.
+const ANSWERED_EXPECTED = join(SNAPSHOT_DIR, 'answered.expected.md')
+const MODE = webSnapshotMode()
+
+const PROMPT = 'Use the ask_user_question tool to ask me exactly one question with id "color", question "Which color do you prefer?", header "Pick one", and options labeled "Blue" and "Green". After I answer, reply with the single word DONE and stop.'
+
+describe('web e2e: resident question composer round trip', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  const sessionEvents: SessionEvent[] = []
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold(MODE === 'record' ? {} : { replayFixture: FIXTURE, paceMs: 15 })
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('asks through the composer, answers, and completes with the answer logged', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-question'))
+    if (MODE !== 'record') {
+      expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    }
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = scaffold.whenTurnSettled(MODE === 'record' ? 180_000 : 30_000)
+    await input.fill(PROMPT)
+    await input.press('Enter')
+
+    // The composer takes over the input area while the tool blocks. Its
+    // presence is a STABLE waiting state (not a transient): it stays until
+    // answered, so a plain waitFor is race-free.
+    const composer = page.locator('[data-question-key]')
+    await composer.waitFor({ timeout: MODE === 'record' ? 120_000 : 30_000 })
+    await expect.poll(() => composer.getByText('Which color do you prefer?').count(), { timeout: 10_000 }).toBeGreaterThan(0)
+
+    if (MODE !== 'record') {
+      // This golden owns the stable question surface; the answered-state
+      // golden below owns the resulting transcript.
+      const snapshot = await captureStableAria(page, '[data-question-key]', scaffold.workspaceCwd)
+      await compareOrRefreshGolden(UI_EXPECTED, snapshot, MODE)
+    }
+
+    await composer.getByRole('radio', { name: 'Blue' }).click()
+    // Submit: Enter on the focused option (the composer's documented submit).
+    await composer.getByRole('radio', { name: 'Blue' }).press('Enter')
+
+    const sessionId = await settled
+    if (MODE === 'record') {
+      await recordFixture(scaffold, sessionId, FIXTURE)
+      return
+    }
+    // World state: the tool result carries the chosen answer, and DONE lands.
+    const results = sessionEvents.filter(e => e.type === 'tool/result')
+    expect(JSON.stringify(results.at(-1))).toContain('Blue')
+    await expect.poll(() => page.getByText('DONE', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    // Composer gone; regular input restored.
+    expect(await page.locator('[data-question-key]').count()).toBe(0)
+    await expect.poll(() => page.locator('textarea').first().isEnabled(), { timeout: 10_000 }).toBe(true)
+    // Golden of the answered transcript: the ask_user_question round trip
+    // rendered as history (question tool row + DONE), composer takeover gone.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(ANSWERED_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, ['session.jsonl', 'ui.expected.md', 'answered.expected.md'])
+  })
+})

apps/web/tests/scaffold.ts

@@ -18,7 +18,7 @@
 // (the plugin-row path discards the ReplayHandle; the direct install keeps
 // assertConsumed for the teardown fixture-consumption check).
 import { existsSync, readFileSync } from 'node:fs'
-import { mkdtemp, readFile, readdir, rm, utimes, writeFile } from 'node:fs/promises'
+import { mkdtemp, readFile, readdir, realpath, rm, utimes, writeFile } from 'node:fs/promises'
 import { tmpdir } from 'node:os'
 import { join, resolve } from 'node:path'
 import { pathToFileURL } from 'node:url'
@@ -101,8 +101,21 @@ export interface LaunchOptions {
    * mounts).
    */
   replayFixture?: string
+  /**
+   * Optional replay.override.json sidecar (whole-script replacement or
+   * `{ patches }` augmentation) for throw/hang scenarios not expressible as
+   * recorded chunks; replay/refresh only.
+   */
+  replayOverride?: string
   /** Per-chunk replay pacing (ms) so the browser observes genuinely incremental SSE; replay/refresh only. */
   paceMs?: number
+  /**
+   * Tool presentation mode patched onto the shipped `tools` row (`code`
+   * collapses the wire to run_code + the SDK prompt section). Omit for the
+   * yml default. The code runtime row is always in the tree, so no extra
+   * insertion is needed.
+   */
+  toolsMode?: 'native' | 'code' | 'both'
 }
 
 /** Dispose the booted tree and remove both owned temp roots, reporting every independent cleanup failure. */
@@ -128,7 +141,7 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
       throw new Error('web e2e record mode needs DEEPSEEK_API_KEY (env or repo-root .env)')
     }
   }
-  const workspaceCwd = await mkdtemp(join(tmpdir(), 'dsh-web-e2e-ws-'))
+  const workspaceCwd = await realpath(await mkdtemp(join(tmpdir(), 'dsh-web-e2e-ws-')))
   let persistenceRoot: string
   try {
     persistenceRoot = await mkdtemp(join(tmpdir(), 'dsh-web-e2e-sessions-'))
@@ -154,6 +167,7 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
     { id: 'workspace-context', disabled: true },
     { id: 'session-title-llm', disabled: true },
     { id: 'webserver', config: { host: '127.0.0.1', port: 0, distIndex: DIST_INDEX } },
+    ...options.toolsMode === undefined ? [] : [{ id: 'tools', config: { mode: options.toolsMode } }],
     ...mode === 'record' ? [] : [{ id: 'llm-deepseek', disabled: true }],
   ]
 
@@ -188,6 +202,7 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise<We
       replayHandle = installLlmReplay(ctx, {
         file: options.replayFixture,
         providers: REPLAY_PROVIDERS,
+        ...(options.replayOverride === undefined ? {} : { overrideFile: options.replayOverride }),
         ...(options.paceMs === undefined ? {} : { paceMs: options.paceMs }),
       })
     }
@@ -438,3 +453,17 @@ export function watchConsole(page: Page): { warnings: string[]; pageErrors: stri
   page.on('pageerror', (error) => { pageErrors.push(String(error)) })
   return { warnings, pageErrors }
 }
+
+/**
+ * Remove only connection-loss warnings emitted after an intentional reload.
+ * Earlier warnings and all gap-repair/discontinuity warnings remain fatal.
+ * @param tripwire - the live console-warning collector.
+ * @param warningStart - warning count captured immediately before reloading.
+ */
+export function acknowledgeReloadConnectionLoss(
+  tripwire: ReturnType<typeof watchConsole>,
+  warningStart: number,
+): void {
+  const reloadWarnings = tripwire.warnings.splice(warningStart)
+  tripwire.warnings.push(...reloadWarnings.filter(text => !/connection lost/i.test(text)))
+}

apps/web/tests/settings-chrome.e2e.ts

@@ -0,0 +1,170 @@
+// Web e2e scenarios: the settings surface — the modal shell (trigger, nav,
+// section switching, both close paths), the Appearance preference row (the
+// real theme gesture — click 深色 and the whole cascade runs: ThemeService preference -> localStorage dsh.theme
+// -> theme/change -> ui-layout's presenter -> body attribute -> alias token)
+// and the Language row (settings-scoped localization + persisted dsh.locale).
+// Zero model calls: everything is pure client + persistence state on a blank
+// frame, so there is no fixture and a stray stream would fail loud on the
+// open llm seam.
+import { fileURLToPath } from 'node:url'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import { join } from 'node:path'
+import {
+  acknowledgeReloadConnectionLoss, assertFixtureInventory, captureStableAria, compareOrRefreshGolden,
+  launchWebScaffold, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/settings-chrome', import.meta.url))
+const DIALOG_EXPECTED = join(SNAPSHOT_DIR, 'dialog.expected.md')
+const MODE = webSnapshotMode()
+
+describe('web e2e: settings modal, appearance gesture, language switch', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({})
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('opens the settings dialog, switches sections, and closes by every path', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-settings-shell'))
+    const trigger = page.getByRole('button', { name: '设置', exact: true })
+    expect(await trigger.getAttribute('aria-haspopup')).toBe('dialog')
+    expect(await trigger.getAttribute('aria-expanded')).toBe('false')
+    await trigger.click()
+    const dialog = page.getByRole('dialog', { name: '设置' })
+    await dialog.waitFor({ timeout: 10_000 })
+    expect(await trigger.getAttribute('aria-expanded')).toBe('true')
+    // General is the active section by default; its skeleton rows plus the
+    // functional Language and Appearance rows render.
+    expect(await dialog.getByRole('button', { name: '通用设置' }).getAttribute('aria-current')).toBe('true')
+    await expect.poll(() => dialog.getByText('语言', { exact: true }).count(), { timeout: 5_000 }).toBe(1)
+    await expect.poll(() => dialog.getByText('外观', { exact: true }).count(), { timeout: 5_000 }).toBe(1)
+    // Golden of the freshly opened dialog (default zh, General active).
+    const snapshot = await captureStableAria(page, '[role="dialog"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(DIALOG_EXPECTED, snapshot, MODE)
+    // Section switch: aria-current moves; Models is deliberately empty.
+    await dialog.getByRole('button', { name: '模型' }).click()
+    await expect.poll(() => dialog.getByRole('button', { name: '模型' }).getAttribute('aria-current'), { timeout: 5_000 }).toBe('true')
+    expect(await dialog.getByRole('button', { name: '通用设置' }).getAttribute('aria-current')).toBeNull()
+    // Close path 1: Escape.
+    await page.keyboard.press('Escape')
+    await expect.poll(() => page.getByRole('dialog', { name: '设置' }).count(), { timeout: 5_000 }).toBe(0)
+    expect(await trigger.getAttribute('aria-expanded')).toBe('false')
+    // Close path 2: the header close button (focus lands there on open).
+    await trigger.click()
+    await page.getByRole('dialog', { name: '设置' }).getByRole('button', { name: '关闭' }).click()
+    await expect.poll(() => page.getByRole('dialog', { name: '设置' }).count(), { timeout: 5_000 }).toBe(0)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 60_000)
+
+  it('flips the theme through the Appearance cubes and persists across reload', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-settings-appearance'))
+    const readState = async (): Promise<{ attr: boolean; token: string; stored: string | null }> =>
+      await page.evaluate(() => ({
+        attr: document.body.hasAttribute('data-ds-dark-theme'),
+        token: getComputedStyle(document.body).getPropertyValue('--dsw-alias-bg-base').trim(),
+        stored: localStorage.getItem('dsh.theme'),
+      }))
+    // Pin the OS scheme to light so the default `system` preference resolves
+    // light and the dark flip below is unambiguously the gesture's doing.
+    await page.emulateMedia({ colorScheme: 'light' })
+    const light = await readState()
+    expect(light.attr).toBe(false)
+
+    await page.getByRole('button', { name: '设置', exact: true }).click()
+    const dialog = page.getByRole('dialog', { name: '设置' })
+    await dialog.waitFor({ timeout: 10_000 })
+    const darkCube = dialog.getByRole('button', { name: '深色' })
+    expect(await darkCube.getAttribute('aria-pressed')).toBe('false')
+    await darkCube.click()
+    // The full cascade: pressed state, persisted preference, body attribute,
+    // alias token flip — all from one real user gesture.
+    await expect.poll(() => darkCube.getAttribute('aria-pressed'), { timeout: 5_000 }).toBe('true')
+    const dark = await readState()
+    expect(dark.attr).toBe(true)
+    expect(dark.stored).toBe('dark')
+    expect(dark.token).not.toBe(light.token)
+    await page.keyboard.press('Escape')
+
+    // Reload: the preference survives boot (restore + presenter initial apply).
+    const warningStart = tripwire.warnings.length
+    await page.reload({ waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    acknowledgeReloadConnectionLoss(tripwire, warningStart)
+    await page.emulateMedia({ colorScheme: 'light' })
+    const reloaded = await readState()
+    expect(reloaded.attr).toBe(true)
+    expect(reloaded.stored).toBe('dark')
+
+    // `system` follows the emulated OS scheme (dark stays dark, light clears).
+    await page.getByRole('button', { name: '设置', exact: true }).click()
+    const systemCube = page.getByRole('dialog', { name: '设置' }).getByRole('button', { name: '跟随系统' })
+    await systemCube.click()
+    await expect.poll(() => systemCube.getAttribute('aria-pressed'), { timeout: 5_000 }).toBe('true')
+    await expect.poll(async () => (await readState()).attr, { timeout: 5_000 }).toBe(false)
+    await page.emulateMedia({ colorScheme: 'dark' })
+    await expect.poll(async () => (await readState()).attr, { timeout: 5_000 }).toBe(true)
+    // Restore for the specs that follow: light preference beats the emulated
+    // dark OS scheme, leaving the shared page in the light default.
+    await page.getByRole('dialog', { name: '设置' }).getByRole('button', { name: '浅色' }).click()
+    await expect.poll(async () => (await readState()).attr, { timeout: 5_000 }).toBe(false)
+    await page.keyboard.press('Escape')
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it('switches the settings surface language and persists dsh.locale', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-settings-language'))
+    await page.getByRole('button', { name: '设置', exact: true }).click()
+    const zhDialog = page.getByRole('dialog', { name: '设置' })
+    await zhDialog.waitFor({ timeout: 10_000 })
+    // The Language selector pill shows the active locale's own name.
+    const selector = zhDialog.getByRole('button', { name: '中文' })
+    expect(await selector.getAttribute('aria-haspopup')).toBe('menu')
+    await selector.click()
+    await page.getByRole('menuitem', { name: 'English' }).click()
+    // The settings-owned copy re-registers localized: dialog title, nav,
+    // Appearance labels. (Only the settings namespaces are localized today —
+    // the rest of the app's copy is intentionally out of this row's scope.)
+    const enDialog = page.getByRole('dialog', { name: 'Settings' })
+    await enDialog.waitFor({ timeout: 10_000 })
+    expect(await enDialog.getByRole('button', { name: 'General' }).getAttribute('aria-current')).toBe('true')
+    await expect.poll(() => enDialog.getByText('Appearance', { exact: true }).count(), { timeout: 5_000 }).toBe(1)
+    expect(await page.evaluate(() => localStorage.getItem('dsh.locale'))).toBe('en')
+    // Reload keeps English; then restore zh so shared page state (and the
+    // other specs' 设置-anchored selectors + goldens) see the default again.
+    const warningStart = tripwire.warnings.length
+    await page.reload({ waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    acknowledgeReloadConnectionLoss(tripwire, warningStart)
+    const enTrigger = page.getByRole('button', { name: 'Settings' })
+    await enTrigger.waitFor({ timeout: 10_000 })
+    await enTrigger.click()
+    await page.getByRole('dialog', { name: 'Settings' }).getByRole('button', { name: 'English' }).click()
+    await page.getByRole('menuitem', { name: '中文' }).click()
+    await page.getByRole('dialog', { name: '设置' }).waitFor({ timeout: 10_000 })
+    expect(await page.evaluate(() => localStorage.getItem('dsh.locale'))).toBe('zh')
+    await page.keyboard.press('Escape')
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
+    expect(tripwire.warnings).toEqual([])
+    await assertFixtureInventory(SNAPSHOT_DIR, ['dialog.expected.md'])
+  })
+})

apps/web/tests/smoke-real.e2e.ts

@@ -271,6 +271,83 @@ describe('dsh web keyless CLI smoke', () => {
       rmSync(workspace, { recursive: true, force: true })
     }
   })
+
+  it('DSH_TOOLS_MODE=code collapses the provider wire tools to run_code with the SDK prompt section', async () => {
+    requireDist()
+    const workspace = mkdtempSync(join(tmpdir(), 'dsh-web-code-mode-'))
+
+    interface CodeModeProviderRequest {
+      messages?: { role?: string; content?: string }[]
+      tools?: { function?: { name?: string } }[]
+    }
+    let resolveProviderRequest!: (request: CodeModeProviderRequest) => void
+    const providerRequest = new Promise<CodeModeProviderRequest>((resolve) => {
+      resolveProviderRequest = resolve
+    })
+    const provider = createServer((request, response) => {
+      let body = ''
+      request.setEncoding('utf8')
+      request.on('data', (chunk: string) => { body += chunk })
+      request.on('end', () => {
+        resolveProviderRequest(JSON.parse(body) as CodeModeProviderRequest)
+        response.writeHead(200, { 'content-type': 'text/event-stream' })
+        response.end([
+          'data: {"choices":[{"delta":{"role":"assistant","content":null,"reasoning_content":""}}]}',
+          'data: {"choices":[{"delta":{"content":"done"}}]}',
+          'data: {"choices":[{"delta":{"content":""},"finish_reason":"stop"}],"usage":{"prompt_tokens":3,"completion_tokens":1}}',
+          'data: [DONE]',
+          '',
+        ].join('\n\n'))
+      })
+    })
+    await new Promise<void>(resolve => provider.listen(0, '127.0.0.1', resolve))
+    const address = provider.address()
+    if (address === null || typeof address === 'string') throw new Error('mock provider did not bind a TCP port')
+    const tsxLoader = pathToFileURL(createRequire(join(REPO_ROOT, 'package.json')).resolve('tsx')).href
+    const child = spawn(
+      process.execPath,
+      ['--import', tsxLoader, join(REPO_ROOT, 'apps/cli/src/bin.ts'), 'web', '--port', '0'],
+      {
+        cwd: workspace,
+        env: {
+          ...process.env,
+          DEEPSEEK_API_KEY: 'keyless-web-code-mode',
+          DEEPSEEK_BASE_URL: `http://127.0.0.1:${address.port}`,
+          DSH_TOOLS_MODE: 'code',
+          DSH_HOME: join(workspace, '.dsh'),
+          TSX_TSCONFIG_PATH: join(REPO_ROOT, 'tsconfig.json'),
+        },
+        stdio: ['ignore', 'pipe', 'pipe'],
+      },
+    )
+    try {
+      const baseUrl = await waitForReadyLine(child)
+      const created = await rpc<{ sessionId: string }>(baseUrl, 'session.create', {})
+      await rpc<{ accepted: true }>(baseUrl, 'session.prompt', {
+        sessionId: created.sessionId,
+        mode: 'queue',
+        content: [{ type: 'text', text: 'go' }],
+      })
+      const captured = await Promise.race([
+        providerRequest,
+        new Promise<never>((_resolve, reject) => {
+          setTimeout(() => { reject(new Error('provider request not received in 10s')) }, 10_000).unref()
+        }),
+      ])
+      expect(captured.tools?.map(tool => tool.function?.name)).toEqual(['run_code'])
+      const system = captured.messages?.find(message => message.role === 'system')
+      expect(system?.content).toContain('## Writing code for run_code')
+      expect(system?.content).toContain('declare const tools')
+    } finally {
+      const closed = child.exitCode === null
+        ? new Promise<void>((resolveClose) => { child.once('close', () => { resolveClose() }) })
+        : Promise.resolve()
+      if (child.exitCode === null) child.kill('SIGTERM')
+      await closed
+      await new Promise<void>(resolveClose => provider.close(() => { resolveClose() }))
+      rmSync(workspace, { recursive: true, force: true })
+    }
+  })
 })
 
 describe.skipIf(!process.env.DEEPSEEK_API_KEY || notReady.length > 0)('web smoke (real host, real key, W5)', () => {

apps/web/tests/snapshots/code-mode-round/session.jsonl

@@ -0,0 +1,240 @@
+{"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785013630399,"cwd":"{{cwd}}/workspace"}
+{"type":"turn/start","seq":0,"time":1785013630411,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
+{"type":"user/message","seq":1,"time":1785013630411,"data":{"content":[{"type":"text","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."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
+{"type":"session/title","seq":2,"time":1785013630418,"data":{"title":"Using ONE run_code program: run","messageSeqs":[1],"source":{"kind":"fallback"}}}
+{"type":"step/start","seq":3,"time":1785013630479,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":4,"time":1785013630480,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
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+{"type":"assistant/chunk","seq":6,"time":1785013631481,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":"The"}}}
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+{"type":"assistant/chunk","seq":10,"time":1785013631690,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" to"}}}
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+{"type":"assistant/chunk","seq":232,"time":1785013634223,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The program ran successfully. Let me now reply DONE as instructed."}}}}
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+{"type":"assistant/chunk","seq":235,"time":1785013634223,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
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+{"type":"turn/end","seq":238,"time":1785013634225,"data":{"turn":1,"reason":{"kind":"completed"}}}

apps/web/tests/snapshots/code-mode-round/ui.expected.md

@@ -0,0 +1,35 @@
+- banner:
+  - navigation "Session hierarchy":
+    - 'button "Using ONE run_code program: run" [disabled]'
+    - text: · 1 turns
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+    - tab "Waterfall"
+- 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."
+- 'button "Think The user wants me to write a single `run_code` program that:"':
+  - img
+  - text: "Think The user wants me to write a single `run_code` program that:"
+- button:
+  - img
+- text: Code Run bash echo and catch missing file read Echo CODE_ROUND_OK
+- button
+- text: Read missing.txt
+- button "Think The program ran successfully. Let me now reply DONE as instructed.":
+  - img
+  - text: Think The program ran successfully. Let me now reply DONE as instructed.
+- paragraph: DONE
+- text: cache hit 52% · 17,490 tokens · 1 turns · 2 steps
+- textbox "Message the agent"
+- button "Add attachment":
+  - img
+- combobox "Plan mode":
+  - option "Plan" [selected]
+  - option "Agent"
+- combobox "Access mode":
+  - option "Read-only" [selected]
+  - option "Read-write"
+- combobox "Model":
+  - option "DeepSeek-V4-Pro High" [selected]
+  - option "DeepSeek-V4-Pro"
+- button "Send message" [disabled]

apps/web/tests/snapshots/lifecycle-chrome/hero.expected.md

@@ -0,0 +1,35 @@
+- button "Collapse sidebar":
+  - img
+- button "New session":
+  - img
+  - text: New Session
+- text: Workspaces
+- button "Group by":
+  - img
+- button "Create workspace":
+  - img
+- button "Search sessions":
+  - img
+- textbox "Search name, keywords..."
+- tree "Sessions": No sessions yet
+- button "设置":
+  - img
+  - text: 设置
+- text: Let's start building
+- button "Choose workspace":
+  - img
+  - text: workspace
+  - img
+- textbox "Describe what you want to build"
+- button "Add attachment":
+  - img
+- combobox "Plan mode":
+  - option "Plan" [selected]
+  - option "Agent"
+- combobox "Access mode":
+  - option "Read-only" [selected]
+  - option "Read-write"
+- combobox "Model":
+  - option "DeepSeek-V4-Pro High" [selected]
+  - option "DeepSeek-V4-Pro"
+- button "Send message" [disabled]

apps/web/tests/snapshots/lifecycle-chrome/reloaded.expected.md

@@ -0,0 +1,27 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Reply with the single word" [disabled]
+    - text: · 1 turns
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+    - tab "Waterfall"
+- text: Reply with the single word LIGHTHOUSE and stop.
+- button "Think The user wants me to reply with a single word. Let me comply.":
+  - img
+  - text: Think The user wants me to reply with a single word. Let me comply.
+- paragraph: LIGHTHOUSE
+- text: cache hit 99% · 7,810 tokens · 1 turns · 1 steps
+- textbox "Message the agent"
+- button "Add attachment":
+  - img
+- combobox "Plan mode":
+  - option "Plan" [selected]
+  - option "Agent"
+- combobox "Access mode":
+  - option "Read-only" [selected]
+  - option "Read-write"
+- combobox "Model":
+  - option "DeepSeek-V4-Pro High" [selected]
+  - option "DeepSeek-V4-Pro"
+- button "Send message" [disabled]

apps/web/tests/snapshots/lifecycle-chrome/session.jsonl

@@ -0,0 +1,35 @@
+{"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785015039278,"cwd":"{{cwd}}/workspace"}
+{"type":"turn/start","seq":0,"time":1785015039291,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
+{"type":"user/message","seq":1,"time":1785015039292,"data":{"content":[{"type":"text","text":"Reply with the single word LIGHTHOUSE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
+{"type":"session/title","seq":2,"time":1785015039294,"data":{"title":"Reply with the single word","messageSeqs":[1],"source":{"kind":"fallback"}}}
+{"type":"step/start","seq":3,"time":1785015039362,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":4,"time":1785015039363,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
+{"type":"assistant/chunk","seq":5,"time":1785015039930,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
+{"type":"assistant/chunk","seq":6,"time":1785015039930,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":"The"}}}
+{"type":"assistant/chunk","seq":7,"time":1785015040092,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" user"}}}
+{"type":"assistant/chunk","seq":8,"time":1785015040120,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" wants"}}}
+{"type":"assistant/chunk","seq":9,"time":1785015040121,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" me"}}}
+{"type":"assistant/chunk","seq":10,"time":1785015040121,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" to"}}}
+{"type":"assistant/chunk","seq":11,"time":1785015040121,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" reply"}}}
+{"type":"assistant/chunk","seq":12,"time":1785015040167,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" with"}}}
+{"type":"assistant/chunk","seq":13,"time":1785015040168,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" a"}}}
+{"type":"assistant/chunk","seq":14,"time":1785015040168,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" single"}}}
+{"type":"assistant/chunk","seq":15,"time":1785015040168,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" word"}}}
+{"type":"assistant/chunk","seq":16,"time":1785015040168,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":"."}}}
+{"type":"assistant/chunk","seq":17,"time":1785015040179,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" Let"}}}
+{"type":"assistant/chunk","seq":18,"time":1785015040179,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" me"}}}
+{"type":"assistant/chunk","seq":19,"time":1785015040179,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":" comply"}}}
+{"type":"assistant/chunk","seq":20,"time":1785015040209,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":"."}}}
+{"type":"assistant/chunk","seq":21,"time":1785015040209,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":22,"time":1785015040209,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":1,"text":"L"}}}
+{"type":"assistant/chunk","seq":23,"time":1785015040210,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":1,"text":"IGH"}}}
+{"type":"assistant/chunk","seq":24,"time":1785015040210,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":1,"text":"TH"}}}
+{"type":"assistant/chunk","seq":25,"time":1785015040240,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":1,"text":"O"}}}
+{"type":"assistant/chunk","seq":26,"time":1785015040241,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":1,"text":"USE"}}}
+{"type":"assistant/chunk","seq":27,"time":1785015040241,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user wants me to reply with a single word. Let me comply."}}}}
+{"type":"assistant/chunk","seq":28,"time":1785015040242,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"LIGHTHOUSE"}}}}
+{"type":"assistant/chunk","seq":29,"time":1785015040242,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":109,"outputTokens":21,"cacheReadTokens":7680,"reasoningTokens":15}}}}
+{"type":"assistant/chunk","seq":30,"time":1785015040242,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":31,"time":1785015040244,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to reply with a single word. Let me comply."},{"type":"text","text":"LIGHTHOUSE"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":109,"outputTokens":21,"cacheReadTokens":7680,"reasoningTokens":15}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30],"surfaceOp":"append"}
+{"type":"step/end","seq":32,"time":1785015040246,"data":{"turn":1,"step":1}}
+{"type":"turn/end","seq":33,"time":1785015040247,"data":{"turn":1,"reason":{"kind":"completed"}}}

apps/web/tests/snapshots/live-interactions/cancel.expected.md

@@ -0,0 +1,24 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Reply with a one-sentence description" [disabled]
+    - text: · 1 turns
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+    - tab "Waterfall"
+- text: Reply with a one-sentence description of event sourcing, then stop.
+- paragraph: partial
+- text: 已停止 0 tokens · 1 turns · 1 steps
+- textbox "Message the agent"
+- button "Add attachment":
+  - img
+- combobox "Plan mode":
+  - option "Plan" [selected]
+  - option "Agent"
+- combobox "Access mode":
+  - option "Read-only" [selected]
+  - option "Read-write"
+- combobox "Model":
+  - option "DeepSeek-V4-Pro High" [selected]
+  - option "DeepSeek-V4-Pro"
+- button "Send message" [disabled]

apps/web/tests/snapshots/live-interactions/error-auth.expected.md

@@ -0,0 +1,22 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Reply with a one-sentence description" [disabled]
+    - text: · 1 turns
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+    - tab "Waterfall"
+- text: Reply with a one-sentence description of event sourcing, then stop.
+- textbox "Message the agent"
+- button "Add attachment":
+  - img
+- combobox "Plan mode":
+  - option "Plan" [selected]
+  - option "Agent"
+- combobox "Access mode":
+  - option "Read-only" [selected]
+  - option "Read-write"
+- combobox "Model":
+  - option "DeepSeek-V4-Pro High" [selected]
+  - option "DeepSeek-V4-Pro"
+- button "Send message" [disabled]

apps/web/tests/snapshots/live-interactions/retry.expected.md

@@ -0,0 +1,27 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Reply with a one-sentence description" [disabled]
+    - text: · 1 turns
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+    - tab "Waterfall"
+- text: Reply with a one-sentence description of event sourcing, then stop.
+- 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
+  - text: 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.
+- paragraph: Event sourcing is a pattern where all changes to an application's state are stored as an immutable, append-only sequence of events, rather than persisting only the current state, enabling full auditability, temporal queries, and event-driven architectures.
+- text: cache hit 99% · 7,869 tokens · 1 turns · 1 steps
+- textbox "Message the agent"
+- button "Add attachment":
+  - img
+- combobox "Plan mode":
+  - option "Plan" [selected]
+  - option "Agent"
+- combobox "Access mode":
+  - option "Read-only" [selected]
+  - option "Read-write"
+- combobox "Model":
+  - option "DeepSeek-V4-Pro High" [selected]
+  - option "DeepSeek-V4-Pro"
+- button "Send message" [disabled]

apps/web/tests/snapshots/live-interactions/session.jsonl

@@ -0,0 +1,93 @@
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apps/web/tests/snapshots/navigation-panes/trajectory.expected.md

@@ -0,0 +1 @@
+- text: "Turn 1 Message {{duration}} #1 User NavScenario: first run bash to print exactly NAVIGATION_OK, then read nav-a.md and nav-b.md using two read calls in ONE assistant message, then reply with the single word FIRST_DONE and stop. +{{duration}} Step 1 {{duration}} bash read×2 #2 Tool bash · {\"command\": \"echo NAVIGATION_OK\", \"description\": \"Print NAVIGATION_OK\"} +{{duration}} #3 Tool read · {\"file_path\": \"nav-a.md\"} +{{duration}} #4 Tool read · {\"file_path\": \"nav-b.md\"} +{{duration}} Step 2 {{duration}} #5 Message FIRST_DONE 349 56 51 +{{duration}} Turn 2 Message {{duration}} #6 User Reply in markdown with: a level-2 heading \"Navigation Summary\", a bulleted list of exactly two items, and a fenced code block containing echo WATERFALL. Then stop. +{{duration}} Step 1 {{duration}} #7 Message ## Navigation Summary - alpha nav - beta nav ``` echo WATERFALL ``` 141 36 16 +{{duration}}"

apps/web/tests/snapshots/navigation-panes/waterfall.expected.md

@@ -0,0 +1 @@
+- text: 3 turns · 3 steps · 3 tool calls turn 0 turn 1 turn 2

apps/web/tests/snapshots/question-composer/answered.expected.md

@@ -0,0 +1,33 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Use the ask_user_question tool to" [disabled]
+    - text: · 1 turns
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+    - tab "Waterfall"
+- text: Use the ask_user_question tool to ask me exactly one question with id "color", question "Which color do you prefer?", header "Pick one", and options labeled "Blue" and "Green". After I answer, reply with the single word DONE and stop.
+- button "Think The user wants me to use the ask_user_question tool to ask a specific question with id \"color\", question \"Which color do you prefer?\", header \"Pick one\", and options labeled \"Blue\" and \"Green\". Let me do exactly that.":
+  - img
+  - text: Think The user wants me to use the ask_user_question tool to ask a specific question with id "color", question "Which color do you prefer?", header "Pick one", and options labeled "Blue" and "Green". Let me do exactly that.
+- button:
+  - img
+- text: "Tool call ask_user_question · {\"questions\": [{\"id\": \"color\", \"question\": \"Which color do you prefer?\", \"header\": \"Pick one\", \"options\": [{\"label\": \"Blue\"}, {\"label\": \"Green\"}]}]}"
+- button "Think The user answered \"Blue\". I need to reply with the single word DONE and stop.":
+  - img
+  - text: Think The user answered "Blue". I need to reply with the single word DONE and stop.
+- paragraph: DONE
+- text: cache hit 99% · 15,978 tokens · 1 turns · 2 steps
+- textbox "Message the agent"
+- button "Add attachment":
+  - img
+- combobox "Plan mode":
+  - option "Plan" [selected]
+  - option "Agent"
+- combobox "Access mode":
+  - option "Read-only" [selected]
+  - option "Read-write"
+- combobox "Model":
+  - option "DeepSeek-V4-Pro High" [selected]
+  - option "DeepSeek-V4-Pro"
+- button "Send message" [disabled]

apps/web/tests/snapshots/question-composer/session.jsonl

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apps/web/tests/snapshots/question-composer/ui.expected.md

@@ -0,0 +1,23 @@
+- region "Which color do you prefer?":
+  - text: Pick one
+  - heading "Which color do you prefer?" [level=2]
+  - text: 1 / 1
+  - button "上一题" [disabled]:
+    - img
+  - button "下一题" [disabled]:
+    - img
+  - button "放弃整组问题":
+    - img
+  - radiogroup:
+    - radio "Blue":
+      - text: 1 Blue
+      - img
+    - radio "Green":
+      - text: 2 Green
+      - img
+    - button "其他，请填写自定义答案":
+      - img
+      - text: 其他，请填写自定义答案
+  - status
+  - button "跳过本题"
+  - button "提交" [disabled]

apps/web/tests/snapshots/settings-chrome/dialog.expected.md

@@ -0,0 +1,30 @@
+- dialog "设置":
+  - navigation:
+    - text: 设置
+    - button "通用设置":
+      - img
+      - text: 通用设置
+    - button "模型":
+      - img
+      - text: 模型
+  - button "关闭":
+    - img
+    - text: 关闭
+  - text: 权限 选择默认权限模式
+  - button "Read only" [disabled]:
+    - text: Read only
+    - img
+  - text: 工具调用 Schema mode Traditional function calling — invoke tools one at a time Code mode Chain multiple tools with code — multi-step orchestration 语言
+  - button "中文":
+    - text: 中文
+    - img
+  - text: 外观
+  - button "浅色":
+    - img
+    - text: 浅色
+  - button "深色":
+    - img
+    - text: 深色
+  - button "跟随系统" [pressed]:
+    - img
+    - text: 跟随系统

apps/web/tests/snapshots/steering/mid-steer.expected.md

@@ -0,0 +1,39 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Use the ask_user_question tool to" [disabled]
+    - text: · 1 turns
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+    - tab "Waterfall"
+- 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.
+- button "Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.":
+  - img
+  - text: Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.
+- button
+- text: "Tool call ask_user_question · {\"questions\": [{\"id\": \"checkpoint\", \"question\": \"Ready to continue?\", \"header\": \"Checkpoint\", \"options\": [{\"label\": \"Yes\"}, {\"label\": \"No\"}]}]} 等待回答（1 题）"
+- button "▸ 问题内容"
+- text: 请在原客户端处理（web 端作答后续里程碑提供） cache hit 98% · 7,946 tokens · 1 turns · 1 steps
+- region "Ready to continue?":
+  - text: Checkpoint
+  - heading "Ready to continue?" [level=2]
+  - text: 1 / 1
+  - button "上一题" [disabled]:
+    - img
+  - button "下一题" [disabled]:
+    - img
+  - button "放弃整组问题":
+    - img
+  - radiogroup:
+    - radio "Yes":
+      - text: 1 Yes
+      - img
+    - radio "No":
+      - text: 2 No
+      - img
+    - button "其他，请填写自定义答案":
+      - img
+      - text: 其他，请填写自定义答案
+  - status
+  - button "跳过本题"
+  - button "提交" [disabled]

apps/web/tests/snapshots/steering/session.jsonl

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+{"type":"session/title","seq":2,"time":1785004180033,"data":{"title":"Use the ask_user_question tool to","messageSeqs":[1],"source":{"kind":"fallback"}}}
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+{"type":"request/header","seq":4,"time":1785004180106,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
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+{"type":"assistant/chunk","seq":87,"time":1785004181402,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":88,"time":1785004181406,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that."},{"type":"tool-call","id":"call_00_sAvjivLShvnWVk0sPQPV7661","name":"ask_user_question","arguments":"{\"questions\": [{\"id\": \"checkpoint\", \"question\": \"Ready to continue?\", \"header\": \"Checkpoint\", \"options\": [{\"label\": \"Yes\"}, {\"label\": \"No\"}]}]}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":151,"outputTokens":115,"cacheReadTokens":7680,"reasoningTokens":29}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87],"surfaceOp":"append"}
+{"type":"tool/call","seq":89,"time":1785004181407,"data":{"turn":1,"step":1,"callId":"call_00_sAvjivLShvnWVk0sPQPV7661","name":"ask_user_question","arguments":"{\"questions\": [{\"id\": \"checkpoint\", \"question\": \"Ready to continue?\", \"header\": \"Checkpoint\", \"options\": [{\"label\": \"Yes\"}, {\"label\": \"No\"}]}]}"}}
+{"type":"tool/result","seq":90,"time":1785004181867,"data":{"turn":1,"step":1,"callId":"call_00_sAvjivLShvnWVk0sPQPV7661","content":[{"type":"text","text":"{\"answers\":[{\"id\":\"checkpoint\",\"selected\":[\"Yes\"]}]}"}],"isError":false},"sourceEventSeqs":[89],"surfaceOp":"append"}
+{"type":"steering/message","seq":91,"time":1785004181867,"data":{"turn":1,"content":[{"type":"text","text":"Interjection: include the word BANANA in your final reply."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
+{"type":"step/end","seq":92,"time":1785004181870,"data":{"turn":1,"step":1}}
+{"type":"step/start","seq":93,"time":1785004181870,"data":{"turn":1,"step":2}}
+{"type":"assistant/chunk","seq":94,"time":1785004182322,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
+{"type":"assistant/chunk","seq":95,"time":1785004182323,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"The"}}}
+{"type":"assistant/chunk","seq":96,"time":1785004182452,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" user"}}}
+{"type":"assistant/chunk","seq":97,"time":1785004182480,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" selected"}}}
+{"type":"assistant/chunk","seq":98,"time":1785004182481,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" \""}}}
+{"type":"assistant/chunk","seq":99,"time":1785004182481,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"Yes"}}}
+{"type":"assistant/chunk","seq":100,"time":1785004182481,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"\""}}}
+{"type":"assistant/chunk","seq":101,"time":1785004182509,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" and"}}}
+{"type":"assistant/chunk","seq":102,"time":1785004182510,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" wants"}}}
+{"type":"assistant/chunk","seq":103,"time":1785004182539,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" me"}}}
+{"type":"assistant/chunk","seq":104,"time":1785004182539,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" to"}}}
+{"type":"assistant/chunk","seq":105,"time":1785004182539,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" include"}}}
+{"type":"assistant/chunk","seq":106,"time":1785004182569,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" the"}}}
+{"type":"assistant/chunk","seq":107,"time":1785004182570,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" word"}}}
+{"type":"assistant/chunk","seq":108,"time":1785004182597,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" \""}}}
+{"type":"assistant/chunk","seq":109,"time":1785004182597,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"B"}}}
+{"type":"assistant/chunk","seq":110,"time":1785004182597,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"AN"}}}
+{"type":"assistant/chunk","seq":111,"time":1785004182597,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"ANA"}}}
+{"type":"assistant/chunk","seq":112,"time":1785004182626,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"\""}}}
+{"type":"assistant/chunk","seq":113,"time":1785004182627,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" in"}}}
+{"type":"assistant/chunk","seq":114,"time":1785004182627,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" my"}}}
+{"type":"assistant/chunk","seq":115,"time":1785004182627,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" final"}}}
+{"type":"assistant/chunk","seq":116,"time":1785004182627,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" reply"}}}
+{"type":"assistant/chunk","seq":117,"time":1785004182627,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"."}}}
+{"type":"assistant/chunk","seq":118,"time":1785004182655,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" Let"}}}
+{"type":"assistant/chunk","seq":119,"time":1785004182656,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" me"}}}
+{"type":"assistant/chunk","seq":120,"time":1785004182656,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" acknowledge"}}}
+{"type":"assistant/chunk","seq":121,"time":1785004182685,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" their"}}}
+{"type":"assistant/chunk","seq":122,"time":1785004182749,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" answer"}}}
+{"type":"assistant/chunk","seq":123,"time":1785004182749,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"."}}}
+{"type":"assistant/chunk","seq":124,"time":1785004182750,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":125,"time":1785004182750,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"Great"}}}
+{"type":"assistant/chunk","seq":126,"time":1785004182774,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":","}}}
+{"type":"assistant/chunk","seq":127,"time":1785004182774,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":" let"}}}
+{"type":"assistant/chunk","seq":128,"time":1785004182802,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"'s"}}}
+{"type":"assistant/chunk","seq":129,"time":1785004182804,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":" move"}}}
+{"type":"assistant/chunk","seq":130,"time":1785004182804,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":" forward"}}}
+{"type":"assistant/chunk","seq":131,"time":1785004182831,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"."}}}
+{"type":"assistant/chunk","seq":132,"time":1785004182862,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":" B"}}}
+{"type":"assistant/chunk","seq":133,"time":1785004182863,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"AN"}}}
+{"type":"assistant/chunk","seq":134,"time":1785004182863,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"ANA"}}}
+{"type":"assistant/chunk","seq":135,"time":1785004182863,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":1,"text":"!"}}}
+{"type":"assistant/chunk","seq":136,"time":1785004182892,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user selected \"Yes\" and wants me to include the word \"BANANA\" in my final reply. Let me acknowledge their answer."}}}}
+{"type":"assistant/chunk","seq":137,"time":1785004182893,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"Great, let's move forward. BANANA!"}}}}
+{"type":"assistant/chunk","seq":138,"time":1785004182893,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":172,"outputTokens":41,"cacheReadTokens":7808,"reasoningTokens":29}}}}
+{"type":"assistant/chunk","seq":139,"time":1785004182893,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":140,"time":1785004182894,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The user selected \"Yes\" and wants me to include the word \"BANANA\" in my final reply. Let me acknowledge their answer."},{"type":"text","text":"Great, let's move forward. BANANA!"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":172,"outputTokens":41,"cacheReadTokens":7808,"reasoningTokens":29}},"sourceEventSeqs":[94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139],"surfaceOp":"append"}
+{"type":"step/end","seq":141,"time":1785004182895,"data":{"turn":1,"step":2}}
+{"type":"turn/end","seq":142,"time":1785004182895,"data":{"turn":1,"reason":{"kind":"completed"}}}

apps/web/tests/snapshots/steering/settled.expected.md

@@ -0,0 +1,33 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Use the ask_user_question tool to" [disabled]
+    - text: · 1 turns
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+    - tab "Waterfall"
+- 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.
+- button "Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.":
+  - img
+  - text: Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.
+- button:
+  - img
+- text: "Tool call ask_user_question · {\"questions\": [{\"id\": \"checkpoint\", \"question\": \"Ready to continue?\", \"header\": \"Checkpoint\", \"options\": [{\"label\": \"Yes\"}, {\"label\": \"No\"}]}]} 插话 Interjection: include the word BANANA in your final reply."
+- button "Think The user selected \"Yes\" and wants me to include the word \"BANANA\" in my final reply. Let me acknowledge their answer.":
+  - img
+  - text: Think The user selected "Yes" and wants me to include the word "BANANA" in my final reply. Let me acknowledge their answer.
+- paragraph: Great, let's move forward. BANANA!
+- text: cache hit 98% · 15,967 tokens · 1 turns · 2 steps
+- textbox "Message the agent"
+- button "Add attachment":
+  - img
+- combobox "Plan mode":
+  - option "Plan" [selected]
+  - option "Agent"
+- combobox "Access mode":
+  - option "Read-only" [selected]
+  - option "Read-write"
+- combobox "Model":
+  - option "DeepSeek-V4-Pro High" [selected]
+  - option "DeepSeek-V4-Pro"
+- button "Send message" [disabled]

apps/web/tests/steering.e2e.ts

@@ -0,0 +1,171 @@
+// Web e2e scenario: mid-turn steering, end to end. The composer locks while a
+// turn runs, so the product UI has no steering gesture yet — the steer is
+// POSTed from the page itself over the same same-origin /api transport the
+// client uses (TODO(web-steer-composer): drive this through a composer
+// gesture once one exists). Everything downstream is product: the gateway
+// routes mode:'steer' to Agent.steer, the loop drains it at the step
+// boundary into a durable steering/message event, the SSE mux pushes it, and
+// the transcript renders the badged interjection bubble. The question
+// composer supplies the deterministic mid-turn window: while ask_user_question
+// blocks, the turn is provably running, so record and replay perform the
+// identical steer-then-answer sequence with zero timing dependence — and the
+// recorded final reply proves the steer reached the MODEL (it obeys an
+// instruction that only the steering message carries).
+import { readFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import { parseSessionLog } 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 { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/steering', import.meta.url))
+const FIXTURE = join(SNAPSHOT_DIR, 'session.jsonl')
+// Two goldens for the two distinct states this interaction produces: the
+// mid-turn moment (steer ACCEPTED but deliberately invisible — the loop
+// drains steering at the step boundary, so no interjection bubble exists
+// while the question still blocks the step) and the settled transcript
+// (badged bubble in place, final reply obeying it). The pair pins the
+// timing semantics visually: if the client ever starts rendering pending
+// steers eagerly, the mid-steer golden flips first.
+const MID_EXPECTED = join(SNAPSHOT_DIR, 'mid-steer.expected.md')
+const SETTLED_EXPECTED = join(SNAPSHOT_DIR, 'settled.expected.md')
+const MODE = webSnapshotMode()
+
+const PROMPT = '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.'
+const STEER = 'Interjection: include the word BANANA in your final reply.'
+
+/** Concatenated assistant text deltas — the model-visible reply body. */
+function assistantText(events: SessionEvent[]): string {
+  return events
+    .filter(e => e.type === 'assistant/chunk')
+    .map((e) => {
+      const chunk = (e as SessionEvent & { data: { chunk: { type: string; text?: string } } }).data.chunk
+      return chunk.type === 'text-delta' ? chunk.text ?? '' : ''
+    })
+    .join('')
+}
+
+describe('web e2e: mid-turn steering lands durably and visibly', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  let liveSessionId: string | undefined
+  const sessionEvents: SessionEvent[] = []
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold(MODE === 'record' ? {} : { replayFixture: FIXTURE, paceMs: 15 })
+    scaffold.ctx.on('session/event', (session, event) => {
+      liveSessionId ??= session.id
+      sessionEvents.push(event)
+    })
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('steers during the blocked step; the interjection is logged, rendered, and obeyed', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-steering'))
+    if (MODE !== 'record') {
+      // The steer must NOT be a user/message — it lands as steering/message.
+      expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    }
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = scaffold.whenTurnSettled(MODE === 'record' ? 180_000 : 30_000)
+    await input.fill(PROMPT)
+    await input.press('Enter')
+
+    // The blocked composer is the mid-turn barrier: its presence proves the
+    // ask_user_question step is executing, i.e. the turn is running NOW.
+    const composer = page.locator('[data-question-key]')
+    await composer.waitFor({ timeout: MODE === 'record' ? 120_000 : 30_000 })
+
+    // Steer through the real wire from the page (same envelope + endpoint the
+    // web client's session.prompt uses). accepted:true is the transport proof.
+    expect(liveSessionId).toBeDefined()
+    const reply = await page.evaluate(async ({ sessionId, text }) => {
+      const response = await fetch('/api/session.prompt', {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify({
+          type: 'client-request',
+          rpcId: crypto.randomUUID(),
+          method: 'session.prompt',
+          payload: { sessionId, mode: 'steer', content: [{ type: 'text', text }] },
+        }),
+      })
+      return await response.json() as { result?: { ok?: boolean } }
+    }, { sessionId: liveSessionId!, text: STEER })
+    expect(reply.result?.ok).toBe(true)
+
+    if (MODE !== 'record') {
+      // Mid-turn golden: the ACCEPTED steer is durable in the inbox but the
+      // loop drains steering only at the step boundary, so no steering/message
+      // exists yet and no interjection bubble renders — the composer still
+      // blocks, alone. The DOM is stable here (no further SSE frames can
+      // arrive until the question is answered), making this state capturable.
+      expect(await page.getByText('插话').count()).toBe(0)
+      const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
+      await compareOrRefreshGolden(MID_EXPECTED, snapshot, MODE)
+    }
+
+    // Answer the composer; the tool result closes the step, the loop drains
+    // the steer as steering/message, and the steered continuation runs the
+    // final model call.
+    await composer.getByRole('radio', { name: 'Yes' }).click()
+    await composer.getByRole('radio', { name: 'Yes' }).press('Enter')
+    await settled
+
+    if (MODE === 'record') {
+      const sessionId = await settled
+      await recordFixture(scaffold, sessionId, FIXTURE)
+      // Fixture honesty: a recording where the live model ignored the steer
+      // would replay as a vacuous scenario — reject it and re-record instead.
+      const recorded = parseSessionLog(await readFile(FIXTURE, 'utf8'))
+      expect(recorded.filter(e => e.type === 'steering/message')).toHaveLength(1)
+      expect(assistantText(recorded)).toContain('BANANA')
+      return
+    }
+
+    // Durable: exactly one steering/message, inside turn 1, carrying the text.
+    const steerEvents = sessionEvents.filter(e => e.type === 'steering/message')
+    expect(steerEvents).toHaveLength(1)
+    expect((steerEvents[0] as SessionEvent & { data: { turn: number } }).data.turn).toBe(1)
+    expect(JSON.stringify(steerEvents[0])).toContain('BANANA')
+    const turnEnds = sessionEvents.filter(e => e.type === 'turn/end')
+    expect(turnEnds).toHaveLength(1)
+    expect((turnEnds[0] as SessionEvent & { data: { reason: { kind: string } } }).data.reason.kind).toBe('completed')
+
+    // Visible: the badged interjection bubble plus the reply that obeys it
+    // (steer text + final reply each contain the marker word).
+    await expect.poll(() => page.getByText('插话').count(), { timeout: 15_000 }).toBe(1)
+    await expect.poll(() => page.getByText('Interjection:', { exact: false }).count(), { timeout: 10_000 }).toBe(1)
+    await expect.poll(() => page.getByText('BANANA', { exact: false }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(2)
+    expect(await page.locator('[data-question-key]').count()).toBe(0)
+    // Settled golden: badge + interjection between the question round trip
+    // and the obeying reply, composer takeover gone.
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(SETTLED_EXPECTED, snapshot, MODE)
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
+    await assertFixtureInventory(SNAPSHOT_DIR, ['session.jsonl', 'mid-steer.expected.md', 'settled.expected.md'])
+  })
+})

apps/web/tests/workspace-management.e2e.ts

@@ -0,0 +1,160 @@
+// Web e2e scenarios: workspace management — the create-by-name dialog, the
+// rename round trip over the real wire (workspace.rename RPC + durable
+// registry), duplicate-name pre-check, the flat "In one list" view with its
+// persisted group-by preference, and the session hover card. Zero model
+// calls: workspace.create/rename are host RPCs with no model involvement,
+// and the one session row the flat/hover scenarios need comes from a seeded
+// fixture (the seeded-history seed reused verbatim — no new recording).
+import { mkdir, readFile, writeFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import { join } from 'node:path'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import {
+  acknowledgeReloadConnectionLoss, assertFixtureInventory, launchWebScaffold, seedSession, watchConsole,
+  webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/workspace-management', import.meta.url))
+// The seed is another scenario's committed fixture, reused read-only: this
+// spec needs any one cold session row, not new recorded content.
+const SEED = fileURLToPath(new URL('./snapshots/seeded-history/seed.jsonl', import.meta.url))
+const MODE = webSnapshotMode()
+const SEED_ID = 'workspace-management-web-e2e'
+
+describe('web e2e: workspace management (create / rename / flat view / hover card)', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({})
+    // Seed one cold session (Ungrouped bucket) for the flat view + hover card.
+    const sessionCwd = join(scaffold.workspaceCwd, 'workspace')
+    await mkdir(sessionCwd, { recursive: true })
+    await writeFile(join(sessionCwd, 'a.txt'), 'alpha\n')
+    await writeFile(join(sessionCwd, 'b.txt'), 'beta\n')
+    await seedSession(scaffold, await readFile(SEED, 'utf8'), SEED_ID)
+    browser = await chromium.launch()
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+  })
+
+  it('creates two workspaces by name through the region-header dialog', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-ws-create'))
+    const createByName = async (name: string): Promise<void> => {
+      await page.getByRole('button', { name: 'Create workspace' }).click()
+      // The pick menu's Create workspace submenu opens on hover/focus.
+      await page.getByRole('menuitem', { name: 'Create workspace' }).hover()
+      await page.getByRole('menuitem', { name: 'Create a new workspace' }).click()
+      const dialog = page.getByRole('dialog', { name: 'Create a new workspace' })
+      await dialog.waitFor({ timeout: 10_000 })
+      await dialog.getByLabel('New workspace name').fill(name)
+      await dialog.getByRole('button', { name: 'Create workspace' }).click()
+      await expect.poll(() => page.getByRole('dialog', { name: 'Create a new workspace' }).count(), { timeout: 10_000 }).toBe(0)
+      // The real workspace materializes in the tree as a group row.
+      await expect.poll(() => page.getByText(name, { exact: true }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+    }
+    await createByName('alpha-ws')
+    await createByName('beta-ws')
+    // Durable on the host: both registered, newest first (create prepends).
+    const titles = scaffold.ctx.workspace.list().map(workspace => workspace.title)
+    expect(titles.slice(0, 2)).toEqual(['beta-ws', 'alpha-ws'])
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it('renames a workspace over the wire with a duplicate-name pre-check', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-ws-rename'))
+    // The actions button is display:none until its row hovers — hover the
+    // group row first, then the revealed button becomes actionable.
+    await page.locator('[role="treeitem"]').filter({ hasText: 'alpha-ws' }).first().hover()
+    await page.getByRole('button', { name: 'Workspace actions for alpha-ws' }).click()
+    await page.getByRole('menuitem', { name: 'Rename' }).click()
+    const dialog = page.getByRole('dialog', { name: 'Rename workspace' })
+    await dialog.waitFor({ timeout: 10_000 })
+    const input = dialog.getByLabel('Workspace name')
+    // Client pre-check: a name colliding with another live workspace raises
+    // the inline alert and blocks the primary button before any wire call.
+    await input.fill('beta-ws')
+    await expect.poll(() => dialog.getByRole('alert').count(), { timeout: 5_000 }).toBe(1)
+    expect(await dialog.getByRole('button', { name: 'Rename' }).isDisabled()).toBe(true)
+    // A fresh name goes through workspace.rename to the durable registry.
+    await input.fill('gamma-ws')
+    await expect.poll(() => dialog.getByRole('alert').count(), { timeout: 5_000 }).toBe(0)
+    await dialog.getByRole('button', { name: 'Rename' }).click()
+    await expect.poll(() => page.getByRole('dialog', { name: 'Rename workspace' }).count(), { timeout: 10_000 }).toBe(0)
+    await expect.poll(() => page.getByText('gamma-ws', { exact: true }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+    expect(await page.getByText('alpha-ws', { exact: true }).count()).toBe(0)
+    // Host durability, then reload: the projection is rebuilt from the wire.
+    expect(scaffold.ctx.workspace.list().map(workspace => workspace.title)).toContain('gamma-ws')
+    const warningStart = tripwire.warnings.length
+    await page.reload({ waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    acknowledgeReloadConnectionLoss(tripwire, warningStart)
+    await expect.poll(() => page.getByText('gamma-ws', { exact: true }).count(), { timeout: 15_000 }).toBeGreaterThanOrEqual(1)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it('switches to the flat "In one list" view and persists the preference', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-ws-flat'))
+    // Grouped default: workspace group rows render (the seeded session sits
+    // under Ungrouped; the created workspaces are empty groups).
+    await expect.poll(() => page.getByText('Workspaces', { exact: true }).count(), { timeout: 10_000 }).toBe(1)
+    await page.getByRole('button', { name: 'Group by' }).click()
+    await page.getByRole('menuitem', { name: 'In one list' }).click()
+    // Flat mode: the section label flips and the seeded session is a
+    // top-level row with no group headers above it.
+    await expect.poll(() => page.getByText('Sessions', { exact: true }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+    await expect.poll(() => page.getByText('Ungrouped', { exact: true }).count(), { timeout: 5_000 }).toBe(0)
+    await expect.poll(() => page.locator('[role="treeitem"]').count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+    expect(await page.evaluate(() => localStorage.getItem('dsh.workspace.view'))).toContain('flat')
+    // Persisted across reload; then restore grouped for inter-spec hygiene.
+    const warningStart = tripwire.warnings.length
+    await page.reload({ waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    acknowledgeReloadConnectionLoss(tripwire, warningStart)
+    await expect.poll(() => page.getByText('Ungrouped', { exact: true }).count(), { timeout: 15_000 }).toBe(0)
+    await page.getByRole('button', { name: 'Group by' }).click()
+    await page.getByRole('menuitem', { name: 'WorkSpace' }).click()
+    await expect.poll(() => page.getByText('Ungrouped', { exact: true }).count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(1)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 90_000)
+
+  it('shows the session hover card after a dwell on the row', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-ws-hover'))
+    // Expand Ungrouped to reveal the seeded session row, then dwell on it
+    // (the card opens after a 500ms hover delay, portaled to body).
+    await page.getByText('Ungrouped', { exact: true }).click()
+    // A cold summary carries no durable title, so the row falls back to a
+    // cwd-derived display title — anchored on the run-local workspace-root
+    // basename rather than a literal.
+    const wsBase = scaffold.workspaceCwd.split('/').pop()!
+    const sessionRow = page.locator('[role="treeitem"]').filter({ hasText: wsBase }).first()
+    await sessionRow.waitFor({ timeout: 10_000 })
+    await sessionRow.hover()
+    // Card content: the full title plus the Idle status line (display-only
+    // card; no aria role — text anchors are the stable selector).
+    await expect.poll(() => page.getByText('Idle', { exact: true }).count(), { timeout: 5_000 }).toBeGreaterThanOrEqual(1)
+    // Leaving the anchor closes it with no delay.
+    await page.getByRole('button', { name: '设置' }).hover()
+    await expect.poll(() => page.getByText('Idle', { exact: true }).count(), { timeout: 5_000 }).toBe(0)
+    expect(tripwire.pageErrors).toEqual([])
+  }, 60_000)
+
+  it.skipIf(MODE === 'record')('issued zero model calls and stayed clean', async () => {
+    expect(tripwire.warnings).toEqual([])
+    // This spec mints no fixture directory contents of its own; the seed it
+    // reuses is owned (and inventory-guarded) by seeded-history.
+    await assertFixtureInventory(SNAPSHOT_DIR, ['.gitkeep'])
+  })
+})

apps/web/tsconfig.json

@@ -23,8 +23,16 @@
   // cannot see both sides of the cordis Context merges).
   "exclude": [
     "tests/scaffold.ts",
+    "tests/live-interactions.e2e.ts",
+    "tests/question-composer.e2e.ts",
+    "tests/steering.e2e.ts",
+    "tests/navigation-panes.e2e.ts",
+    "tests/lifecycle-chrome.e2e.ts",
+    "tests/settings-chrome.e2e.ts",
+    "tests/workspace-management.e2e.ts",
     "tests/replay-round-trip.e2e.ts",
-    "tests/seeded-history.e2e.ts"
+    "tests/seeded-history.e2e.ts",
+    "tests/code-mode-round.e2e.ts"
   ],
   "references": [
     {