// @vitest-environment jsdom
/**
 * View registration acceptance on the real framework stack: the plugin fiber
 * registers Trajectory into a real SlotsService view ring, tabs
 * switch inside ConversationRoot (renderSlot share driven by the same tab
 * projection apply uses) without collapsing chat, trajectory renders the
 * event ledger with its timing overview, and fiber disposal removes the tab.
 * Timeline projection and inclusive focus edge cases ride along.
 */
import { Context } from 'cordis'
import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
import { cleanup, fireEvent, render, screen } from '@testing-library/react'
import { createElement, type ComponentProps, type FC, type ReactNode } from 'react'
import { bindSnapshotSelector } from '@deepseek-ai/dsh-client-web-react'
import { resolveSlotLabel } from '@deepseek-ai/dsh-client-ui-slots'
import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
import type { UseSession } from '@deepseek-ai/dsh-client-web-react'
import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
import type {
  ConversationSnapshot, RequestView, SessionHistoryFace, SessionHistoryInspection,
  SessionHistorySnapshot, SessionId, SessionListState, WorkspaceListState,
} from '@deepseek-ai/dsh-client-runtime/client'
import type { ConvViewProps, ViewTab } from '@deepseek-ai/dsh-client-ui-conversation/client'
import { ConversationSession, type ConversationSessionProps } from '@deepseek-ai/dsh-client-ui-conversation/src/client/skeleton/ConversationSession.tsx'
import { createChatStore } from '@deepseek-ai/dsh-client-ui-conversation/src/client/stores.ts'
import { zh as conversationZh } from '@deepseek-ai/dsh-client-ui-conversation/src/client/locales.ts'
import { apply, inject } from '@deepseek-ai/dsh-client-ui-trajectory/client'
import { apply as nodeApply } from '@deepseek-ai/dsh-client-ui-trajectory'
import type { TrajectoryTurnModel } from '../src/client/layout.ts'
import { TrajectoryTimeline } from '../src/client/TrajectoryTimeline.tsx'
import {
  TrajectoryView, type TrajectoryViewInjected,
} from '../src/client/TrajectoryView.tsx'
import { deriveTrajectoryTimeline } from '../src/client/timeline.ts'

const SID = 's1' as SessionId

// Stub of the conversation package's standard locale seat (this spec mounts
// its ConversationSession chrome); answers from the zh dictionary and falls
// back to the key like the real chain.
const tConversation: ConversationSessionProps['t'] =
  key => (conversationZh as Record<string, string>)[key] ?? key
afterEach(cleanup)
// The chat store persists under its declared key; clear so one case's active
// view cannot rehydrate into the next.
beforeEach(() => {
  localStorage.clear()
})

/** Node fixture: user prologue, two turns, one tool result inside turn 1. */
const NODES = [
  { kind: 'user', seq: 1, time: 1_000, content: [], source: null },
  {
    kind: 'assistant', seq: 2, time: 2_000, turn: 1, step: 1, blocks: [],
    timing: { stepStartTime: 1_800, firstTokenTime: 1_900, completedTime: 2_000 },
  },
  {
    kind: 'tool-result', seq: 3, time: 3_000, callId: 'c1', call: null, callTime: 2_200,
    content: [], isError: false, callView: null, resultView: null,
  },
  {
    kind: 'assistant', seq: 4, time: 4_000, turn: 2, step: 1, blocks: [],
    timing: { stepStartTime: 3_500, firstTokenTime: 3_700, completedTime: 4_000 },
  },
] as unknown as ConversationSnapshot['nodes']

function historySnapshot(
  nodes: ConversationSnapshot['nodes'],
  inspection: Partial<SessionHistoryInspection> = {},
): SessionHistorySnapshot {
  return {
    state: 'ready',
    error: null,
    hasMore: false,
    inspection: {
      eventNodes: nodes,
      contexts: [{ id: 0, nodes }],
      requests: [],
      callSchemas: new Map(),
      interruptedNodes: [],
      partial: null,
      runningCalls: [],
      codeDispatches: new Map(),
      ...inspection,
    },
  }
}

function standaloneHistory(
  snapshot: SessionHistorySnapshot,
): Pick<ComponentProps<typeof TrajectoryView>, 'useHistory' | 'loadAllHistory'> {
  const store = createSnapshotStore(snapshot)
  return {
    useHistory: bindSnapshotSelector(store),
    loadAllHistory: () => Promise.resolve(),
  }
}

function fakeSession(nodes: ConversationSnapshot['nodes']) {
  const store = createSnapshotStore({
    nodes, pending: [], partial: null,
    runningCalls: [] as ConversationSnapshot['runningCalls'], codeDispatches: new Map(),
  })
  return { store, useSession: bindSnapshotSelector(store) as unknown as UseSession<ConversationSnapshot> }
}

/** Empty sessions-list hook; breadcrumbs therefore fall back to the raw id. */
function emptySessions() {
  const store = createSnapshotStore<SessionListState>(
    { ids: [], byId: {}, current: undefined, phase: 'ready' })
  return bindSnapshotSelector(store)
}

function emptyWorkspaces() {
  const store = createSnapshotStore<WorkspaceListState>({
    items: [], archivedSessionIds: [], state: 'idle', phase: 'ready', error: null, baselinesReady: true,
    recentWorkspaceId: undefined,
  })
  return bindSnapshotSelector(store)
}

/** Standalone view props: the session-scope standard kit the outlet would bake. */
function standaloneProps(nodes: ConversationSnapshot['nodes']): ConvViewProps {
  return {
    sessionId: SID,
    useSession: fakeSession(nodes).useSession,
    useSessions: emptySessions(),
    useWorkspaces: emptyWorkspaces(),
    useProjection: (() => undefined) as never,
  } as unknown as ConvViewProps
}

/** Real-stack bench: root Context + real SlotsService ring + the plugin fiber. */
async function bench(snapshot = historySnapshot(NODES)) {
  const ctx = new Context()
  const slots = new SlotsService(ctx)
  const loadAllHistory = vi.fn((_signal: AbortSignal) => Promise.resolve())
  const historyStore = createSnapshotStore(snapshot)
  const history: SessionHistoryFace = {
    sessionId: SID,
    getSnapshot: () => historyStore.getSnapshot(),
    subscribe: listener => historyStore.subscribe(listener),
    loadAll: loadAllHistory,
  }
  // The conversation entry's role: declare the ring, then seed the chat entry.
  slots.register({
    name: 'root',
    children: { 'conversation.view': { kind: 'list', scope: 'session' } },
  }, (_p: { renderSlot?: unknown }) => null)
  const chatBody = vi.fn(() => <div data-testid="chat-body" />)
  slots.register(
    { name: 'conversation.view', id: 'chat', order: 0, label: 'Chat' } as never, chatBody as never)
  // 'conversation' inject is an ordering edge; the bench declares the ring
  // itself, so a stub satisfies the wait.
  ctx.provide('conversation', {})
  ctx.provide('sessionHistory', { source: () => history })
  const fiber = ctx.plugin({ inject: [...inject], apply })
  await fiber.await()
  return { ctx, slots, fiber, loadAllHistory }
}

/** Tab projection twin of apply's viewTabs (the render-side consumption path). */
function tabsOf(slots: SlotsService): ViewTab[] {
  return slots.entries('conversation.view')
    .map(e => ({ id: e.options.id!, label: resolveSlotLabel(e.options.label) ?? e.options.id! }))
}

/** Mount the strict session content over the ring ledger with an outlet-faithful renderSlot. */
function mount(slots: SlotsService, nodes: ConversationSnapshot['nodes'] = NODES) {
  const sessionSnapshot = createSnapshotStore({
    running: false, removed: false, promptError: null, nodes,
    pending: [],
    openState: 'open' as const, hasMore: true, loadingOlder: false,
    partial: null, runningCalls: [] as ConversationSnapshot['runningCalls'], codeDispatches: new Map(),
  })
  const useSession = bindSnapshotSelector(sessionSnapshot) as unknown as UseSession<ConversationSnapshot>
  const chat = createChatStore().create()
  // Minimal outlet twin: resolve the ring entry by the `only` filter and
  // render it with the session standard kit (what SlotOutlet does for a
  // list-kind session slot, minus machinery).
  const renderSlot = ((key: string, _owner: object, opts?: { only?: string }): ReactNode => {
    const entry = slots.entries('conversation.view').find(e => e.options.id === opts?.only)
    if (entry === undefined) return null
    const View = entry.component as FC<ConvViewProps>
    const injectEntry = entry.inject as ((sessionId: SessionId) => object) | undefined
    const injected = injectEntry === undefined
      ? {}
      : injectEntry(SID)
    const injectedProps = 'hooks' in injected
      ? {
        loadAllHistory: (injected as TrajectoryViewInjected).loadAllHistory,
        useHistory: bindSnapshotSelector(
          (injected as TrajectoryViewInjected).hooks.history,
        ),
      }
      : injected
    return (
      <View
        {...injectedProps}
        {...({ sessionId: SID, useSession, useSessions: emptySessions(), useWorkspaces: emptyWorkspaces() } as unknown as ConvViewProps)}
        key={key}
      />
    )
  }) as unknown as ConversationSessionProps['renderSlot']
  return render(
    <ConversationSession
      sessionId={SID}
      t={tConversation}
      SessionProvider={({ children }) => children(SID)}
      useSession={useSession}
      useSessions={emptySessions()}
      useWorkspaces={emptyWorkspaces()}
      useProjection={(() => undefined)}
      useStore={bindSnapshotSelector(chat)}
      actions={chat.actions}
      renderSlot={renderSlot}
      views={{
        list: () => tabsOf(slots),
        subscribe: (fn: () => void) => slots.subscribe('conversation.view', fn),
        version: () => slots.getVersion('conversation.view'),
      }}
      useInput={bindSnapshotSelector(createSnapshotStore({ draft: '', draftRev: 0, phase: 'plain', queue: [] })) as never}
      inputActions={{ setDraft: vi.fn(), submit: vi.fn() }}
      bindDraftMirror={() => () => {}}
      open={vi.fn()}
    />,
  )
}

describe('plugin registration', () => {
  it('registers trajectory after chat on the ring', async () => {
    const b = await bench()
    expect(tabsOf(b.slots)).toEqual([
      { id: 'chat', label: 'Chat' },
      { id: 'trajectory', label: 'Trajectory' },
    ])
  })

  it('fiber disposal removes the tab and leaves chat standing', async () => {
    const b = await bench()
    await b.fiber.dispose()
    expect(tabsOf(b.slots).map(v => v.id)).toEqual(['chat'])
  })
})

describe('tab switching in ConversationRoot', () => {
  it('renders two tabs, defaults to chat, and switches to the trajectory ledger', async () => {
    const b = await bench()
    const view = mount(b.slots)
    expect(screen.getByTestId('chat-body')).toBeTruthy()
    expect(screen.getAllByRole('tab').map(t => t.textContent)).toEqual(['Chat', 'Trajectory'])

    fireEvent.click(screen.getByRole('tab', { name: 'Trajectory' }))
    expect(screen.queryByText(/turns ·/)).toBeNull()
    expect(view.container.querySelectorAll('tr[data-turn-start="true"]')).toHaveLength(2)
    expect(screen.queryByRole('columnheader')).toBeNull()
    expect(screen.getByRole('toolbar', { name: 'Trajectory toolbar' })).toBeTruthy()
    expect(screen.getByRole('region', { name: 'Trajectory timeline' })).toBeTruthy()
    fireEvent.click(screen.getByRole('button', { name: 'Collapse turns' }))
    expect(view.container.querySelector('[data-collapsed-summary="turn"]')).toBeTruthy()
    fireEvent.click(screen.getByRole('button', { name: 'Expand turns' }))
    expect(screen.getByRole('row', { name: /USER/ })).toBeTruthy()
    expect(screen.queryByTestId('chat-body')).toBeNull()
    await vi.waitFor(() => {
      expect(b.loadAllHistory).toHaveBeenCalledOnce()
    })
    const signal = b.loadAllHistory.mock.calls[0]?.[0]
    expect(signal?.aborted).toBe(false)
    fireEvent.click(screen.getByRole('tab', { name: 'Chat' }))
    expect(signal?.aborted).toBe(true)
  })

  it('opens a local record inspector and switches payload tabs without opening chat details', async () => {
    const b = await bench()
    mount(b.slots)
    fireEvent.click(screen.getByRole('tab', { name: 'Trajectory' }))

    fireEvent.keyDown(screen.getByRole('row', { name: /TOOL/ }), { key: 'Enter' })
    expect(screen.getByRole('complementary', { name: 'Event details' })).toBeTruthy()
    expect(screen.getByText('Turn 1 · Step 1')).toBeTruthy()
    expect(screen.getByText('Completed')).toBeTruthy()
    expect(screen.getByRole('tab', { name: 'Result' })).toBeTruthy()

    fireEvent.click(screen.getByRole('button', { name: 'Close details' }))
    expect(screen.queryByRole('complementary', { name: 'Event details' })).toBeNull()
  })

  it('dragging the overview focuses overlapping records without filtering the ledger', async () => {
    const b = await bench()
    mount(b.slots)
    fireEvent.click(screen.getByRole('tab', { name: 'Trajectory' }))
    const plot = screen.getByLabelText('Timeline overview; drag horizontally to focus events')
    vi.spyOn(plot, 'getBoundingClientRect').mockReturnValue({
      x: 0, y: 0, left: 0, top: 0, right: 100, bottom: 72, width: 100, height: 72,
      toJSON: () => ({}),
    })
    fireEvent.pointerDown(plot, { button: 0, clientX: 55, pointerId: 1 })
    fireEvent.pointerMove(plot, { clientX: 95, pointerId: 1 })
    fireEvent.pointerUp(plot, { clientX: 95, pointerId: 1 })

    expect(screen.getByRole('row', { name: /USER/ }).getAttribute('data-timeline-focus'))
      .toBe('outside')

    const tablePane = screen.getByRole('table').parentElement
    expect(tablePane).not.toBeNull()
    fireEvent.click(tablePane as HTMLElement)
    expect(screen.getByRole('row', { name: /USER/ }).getAttribute('data-timeline-focus'))
      .toBeNull()

    fireEvent.pointerDown(plot, { button: 0, clientX: 55, pointerId: 2 })
    fireEvent.pointerMove(plot, { clientX: 95, pointerId: 2 })
    fireEvent.pointerUp(plot, { clientX: 95, pointerId: 2 })
    expect(screen.getByRole('row', { name: /USER/ }).getAttribute('data-timeline-focus'))
      .toBe('outside')
    fireEvent.contextMenu(plot)
    expect(screen.getByRole('row', { name: /USER/ }).getAttribute('data-timeline-focus'))
      .toBeNull()
  })

  it('clicking a timeline block clears the range, selects the record, and opens its inspector', async () => {
    const b = await bench()
    const view = mount(b.slots)
    fireEvent.click(screen.getByRole('tab', { name: 'Trajectory' }))
    const plot = screen.getByLabelText('Timeline overview; drag horizontally to focus events')
    vi.spyOn(plot, 'getBoundingClientRect').mockReturnValue({
      x: 0, y: 0, left: 0, top: 0, right: 100, bottom: 72, width: 100, height: 72,
      toJSON: () => ({}),
    })
    const toolSpan = view.container.querySelector<HTMLElement>(
      '[data-timeline-span="tool"]',
    )
    expect(toolSpan).not.toBeNull()
    const recordIndex = toolSpan?.dataset.timelineRecordIndex
    expect(recordIndex).toBeTruthy()

    fireEvent.pointerMove(toolSpan as HTMLElement, { clientX: 50, pointerId: 1 })
    expect(view.container.querySelector('[data-timeline-hover-line]')).toBeNull()
    expect(toolSpan?.getAttribute('data-hovered')).toBe('true')

    fireEvent.pointerDown(plot, { button: 0, clientX: 5, pointerId: 1 })
    fireEvent.pointerMove(plot, { clientX: 95, pointerId: 1 })
    fireEvent.pointerUp(plot, { clientX: 95, pointerId: 1 })
    expect(view.container.querySelector('tr[data-timeline-focus]')).toBeTruthy()

    fireEvent.pointerDown(toolSpan as HTMLElement, {
      button: 0, clientX: 50, pointerId: 2,
    })
    fireEvent.pointerUp(toolSpan as HTMLElement, { clientX: 50, pointerId: 2 })

    const selectedRow = view.container.querySelector<HTMLElement>(
      `tr[data-record-index="${recordIndex}"]`,
    )
    expect(selectedRow?.getAttribute('aria-selected')).toBe('true')
    expect(view.container.querySelector('tr[data-timeline-focus]')).toBeNull()
    expect(screen.getByRole('complementary', { name: 'Event details' })).toBeTruthy()
  })

  it('empty window keeps the toolbar and reports no timing data', async () => {
    const b = await bench(historySnapshot([]))
    mount(b.slots)
    fireEvent.click(screen.getByRole('tab', { name: 'Trajectory' }))
    expect(screen.getByRole('toolbar', { name: 'Trajectory toolbar' })).toBeTruthy()
    expect(screen.getByText('No timing data')).toBeTruthy()
    expect(screen.queryByRole('row')).toBeNull()
    expect(screen.queryByText(/turns ·/)).toBeNull()
  })
})

describe('timeline projection', () => {
  const turns = [{
    turn: 1,
    groups: [{
      title: 'Step 1',
      cells: [
        { index: 1, kind: 'message', text: 'assistant', startedAt: 1_000, timeSeconds: 1 },
        { index: 2, kind: 'tool', text: 'bash', startedAt: 2_000, timeSeconds: 1 },
        { index: 3, kind: 'user', text: 'unknown', timeSeconds: 0 },
      ],
    }],
  }] satisfies readonly TrajectoryTurnModel[]
  const longTurns = [{
    turn: 1,
    groups: [{
      title: 'Step 1',
      cells: Array.from({ length: 10 }, (_, index) => ({
        index,
        kind: 'message' as const,
        text: `record ${index}`,
        timeSeconds: 1,
      })),
    }],
  }] satisfies readonly TrajectoryTurnModel[]

  it('pans the zoomed viewport only far enough to reveal a newly selected record', async () => {
    const onRangeChange = vi.fn()
    const view = render(
      <TrajectoryTimeline
        turns={longTurns}
        mode="sequence"
        range={null}
        onRangeChange={onRangeChange}
      />,
    )
    const plot = screen.getByLabelText('Timeline overview; drag horizontally to focus events')
    vi.spyOn(plot, 'getBoundingClientRect').mockReturnValue({
      x: 0, y: 0, left: 0, top: 0, right: 100, bottom: 72, width: 100, height: 72,
      toJSON: () => ({}),
    })
    fireEvent.wheel(plot, { clientX: 50, deltaY: -1_000 })

    view.rerender(
      <TrajectoryTimeline
        turns={longTurns}
        mode="sequence"
        range={null}
        selectedIndex={1}
        onRangeChange={onRangeChange}
      />,
    )
    await vi.waitFor(() => {
      const domain = view.container.querySelector<HTMLElement>(
        '[data-timeline-domain]',
      )
      expect(domain?.style.getPropertyValue('--trajectory-domain-left')).toBe('-25%')
    })

    view.rerender(
      <TrajectoryTimeline
        turns={longTurns}
        mode="sequence"
        range={null}
        selectedIndex={8}
        onRangeChange={onRangeChange}
      />,
    )
    await vi.waitFor(() => {
      const domain = view.container.querySelector<HTMLElement>(
        '[data-timeline-domain]',
      )
      expect(domain?.style.getPropertyValue('--trajectory-domain-left')).toBe('-125%')
    })
  })

  it('auto-pans a zoomed viewport while a range drag pushes against an edge', () => {
    const onRangeChange = vi.fn()
    render(
      <TrajectoryTimeline
        turns={longTurns}
        mode="sequence"
        range={null}
        onRangeChange={onRangeChange}
      />,
    )
    const plot = screen.getByLabelText('Timeline overview; drag horizontally to focus events')
    vi.spyOn(plot, 'getBoundingClientRect').mockReturnValue({
      x: 0, y: 0, left: 0, top: 0, right: 100, bottom: 72, width: 100, height: 72,
      toJSON: () => ({}),
    })
    fireEvent.wheel(plot, { clientX: 50, deltaY: -1_000 })
    fireEvent.pointerDown(plot, { button: 0, clientX: 50, pointerId: 1 })
    for (let index = 0; index < 24; index++) {
      fireEvent.pointerMove(plot, { clientX: 99, pointerId: 1 })
    }
    fireEvent.pointerUp(plot, { clientX: 99, pointerId: 1 })

    const selectedRange = onRangeChange.mock.calls.at(-1)?.[0] as
      | { start: number; end: number }
      | undefined
    expect(selectedRange).toBeDefined()
    expect((selectedRange?.end ?? 0) - (selectedRange?.start ?? 0)).toBeGreaterThan(4)
  })

  it('uses equal-width operation slots and stable semantic lanes', () => {
    expect(deriveTrajectoryTimeline(turns)).toEqual({
      start: 0,
      end: 3,
      spans: [
        {
          index: 1, isError: false, kind: 'message', label: 'assistant',
          lane: 1, start: 0, end: 1,
        },
        {
          index: 2, isError: false, kind: 'tool', label: 'bash',
          lane: 2, start: 1, end: 2,
        },
        {
          index: 3, isError: false, kind: 'user', label: 'unknown',
          lane: 0, start: 2, end: 3,
        },
      ],
      turnBoundaries: [{ turn: 1, time: 0 }],
    })
  })

  it('marks error records directly on timeline spans', () => {
    const errorTurns = [{
      turn: 1,
      groups: [{
        title: 'Step 1',
        cells: [{
          index: 1,
          kind: 'tool' as const,
          text: 'failed tool',
          timeSeconds: 0.1,
          isError: true,
        }],
      }],
    }] satisfies readonly TrajectoryTurnModel[]
    const view = render(
      <TrajectoryTimeline
        turns={errorTurns}
        mode="sequence"
        range={null}
        onRangeChange={() => {}}
      />,
    )

    expect(view.container.querySelector(
      '[data-timeline-span="tool"][data-error="true"]',
    )).toBeTruthy()
  })

  it('ignores durations and idle gaps while retaining turn boundaries', () => {
    const separatedTurns = [
      {
        turn: 1,
        groups: [{
          title: 'Step 1',
          cells: [
            { index: 1, kind: 'message', text: 'first', startedAt: 1_000, timeSeconds: 1 },
            { index: 2, kind: 'tool', text: 'within-turn gap', startedAt: 4_000, timeSeconds: 1 },
          ],
        }],
      },
      {
        turn: 2,
        groups: [{
          title: 'Step 1',
          cells: [
            { index: 3, kind: 'message', text: 'after user idle', startedAt: 40_000, timeSeconds: 1 },
          ],
        }],
      },
    ] satisfies readonly TrajectoryTurnModel[]

    expect(deriveTrajectoryTimeline(separatedTurns)).toMatchObject({
      start: 0,
      end: 3,
      spans: [
        { index: 1, start: 0, end: 1 },
        { index: 2, start: 1, end: 2 },
        { index: 3, start: 2, end: 3 },
      ],
      turnBoundaries: [
        { turn: 1, time: 0 },
        { turn: 2, time: 2 },
      ],
    })
  })

  it('empty inputs produce no model and the standalone view reports its empty form', () => {
    expect(deriveTrajectoryTimeline([])).toBeNull()
    render(createElement(
      TrajectoryView,
      {
        ...standaloneProps([]),
        ...standaloneHistory(historySnapshot([])),
      },
    ))
    expect(screen.getByRole('toolbar', { name: 'Trajectory toolbar' })).toBeTruthy()
    expect(screen.queryByRole('row')).toBeNull()
  })
})

describe('TrajectoryView branches', () => {
  it('renders only the selected rewind branch while retaining session-global requests', () => {
    const retained = {
      kind: 'user',
      seq: 1,
      time: 1_000,
      content: [{ type: 'text', text: 'retained user' }],
      source: null,
    } as unknown as ConversationSnapshot['nodes'][number]
    const abandoned = {
      kind: 'assistant',
      seq: 3,
      time: 3_000,
      turn: 1,
      step: 1,
      blocks: [{ kind: 'text', text: 'abandoned response' }],
    } as unknown as ConversationSnapshot['nodes'][number]
    const current = {
      kind: 'assistant',
      seq: 5,
      time: 5_000,
      turn: 2,
      step: 1,
      blocks: [{ kind: 'text', text: 'current response' }],
    } as unknown as ConversationSnapshot['nodes'][number]
    const request = (startSeq: number, turn: number): RequestView => ({
      purpose: 'assistant',
      startSeq,
      turn,
      step: 1,
      startedAt: startSeq * 1_000,
      completedAt: startSeq * 1_000 + 100,
      status: 'complete',
    })
    const store = createSnapshotStore(historySnapshot(
      [retained, abandoned, current],
      {
        eventNodes: [retained, abandoned, current],
        contexts: [
          { id: 0, nodes: [retained, abandoned] },
          {
            id: 1,
            parentId: 0,
            origin: 'rewind' as const,
            originSeq: 4,
            nodes: [retained, current],
          },
        ],
        requests: [request(2, 1), request(4, 2)],
        callSchemas: new Map(),
      },
    ))

    const view = render(
      <TrajectoryView
        {...standaloneProps([])}
        useHistory={bindSnapshotSelector(store)}
        loadAllHistory={vi.fn(() => Promise.resolve())}
      />,
    )

    expect(screen.queryByText('abandoned response')).toBeNull()
    expect(screen.getByText('current response')).toBeTruthy()
    expect(screen.getByRole('row', { name: /Request 2, ASSISTANT/ })).toBeTruthy()
    expect(view.container.querySelectorAll('[data-request-only="true"]')).toHaveLength(0)
  })

  it('retains cancellation-frozen assistant and tool nodes outside raw contexts', () => {
    const retained = {
      kind: 'user', seq: 1, time: 1_000,
      content: [{ type: 'text', text: 'stop the task' }], source: null,
    } as unknown as ConversationSnapshot['nodes'][number]
    const interruptedAssistant = {
      kind: 'assistant', seq: 2.1, time: 2_000, turn: 1, step: 1,
      blocks: [{ kind: 'text', text: 'partial response retained' }],
      interrupted: true,
    } as unknown as ConversationSnapshot['nodes'][number]
    const interruptedTool = {
      kind: 'tool-result', seq: 2.2, time: 2_100, callId: 'slow-call',
      call: { name: 'bash', argsRaw: '{"command":"sleep 30"}' }, callTime: 1_900,
      content: [], isError: true,
      error: { name: 'Interrupted', code: 'interrupted' },
      callView: null, resultView: null,
    } as unknown as ConversationSnapshot['nodes'][number]
    const store = createSnapshotStore(historySnapshot(
      [retained],
      {
        eventNodes: [retained],
        contexts: [{ id: 0, nodes: [retained] }],
        requests: [],
        callSchemas: new Map(),
        interruptedNodes: [interruptedAssistant, interruptedTool],
      },
    ))

    render(
      <TrajectoryView
        {...standaloneProps([])}
        useHistory={bindSnapshotSelector(store)}
        loadAllHistory={vi.fn(() => Promise.resolve())}
      />,
    )

    expect(screen.getByText('partial response retained')).toBeTruthy()
    expect(screen.getByRole('row', { name: /TOOL, bash/ })).toBeTruthy()
  })
})

describe('node half', () => {
  it('node apply is an intentional no-op (loader-managed lifecycle only)', () => {
    expect(() => { nodeApply() }).not.toThrow()
  })
})