Merge refreshed rfc/pty into feature/persistent-pty-sessions

# Conflicts:
#	docs/architecture.md
#	docs/capability-seams.md
#	docs/config-catalog.md
#	docs/cordis-catalog/services.md
#	docs/module-graph.md
#	docs/tool-catalog.md
#	examples/acp-agent/tests/acp.snapshot.ts
#	examples/headless-agent/tests/headless.snapshot.ts
#	examples/package.json
#	packages/README.md
#	packages/cordis/tool-cordis/src/api-catalog.ts
#	packages/core/tools/tests/gen-tool-catalog.spec.ts
#	pnpm-lock.yaml
#	pnpm-workspace.yaml
#	scripts/gen-tool-catalog.ts
#	scripts/type-equiv.manifest.json
#	website/.vitepress/config/api-sidebar.json

examples/headless-agent/tests/code-mode.e2e.ts

@@ -0,0 +1,169 @@
+import { mkdtemp, mkdir, readFile, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import { Context } from 'cordis'
+import LlmService from '@deepseek-ai/dsh-llm'
+import SessionStore, { SessionId } from '@deepseek-ai/dsh-session'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
+import ToolRegistry, { RUN_CODE_NAME } from '@deepseek-ai/dsh-tools'
+import AgentRegistry, { type Agent } from '@deepseek-ai/dsh-agent'
+
+import AgentLoop from '@deepseek-ai/dsh-agent-loop'
+import { LocalBashExecutor } from '@deepseek-ai/dsh-bash-local'
+import * as ToolBash from '@deepseek-ai/dsh-tool-bash'
+import * as LlmDeepSeek from '@deepseek-ai/dsh-llm-deepseek'
+import { WorkerCodeRuntime } from '@deepseek-ai/dsh-code-runtime-worker'
+import LocalFileSystem from '@deepseek-ai/dsh-fs-local'
+import * as ToolFs from '@deepseek-ai/dsh-tool-fs'
+import * as WorkspaceContext from '@deepseek-ai/dsh-workspace-context'
+
+/**
+ * With-key Code Mode proof: a real model receives only `run_code`, composes two
+ * sub-calls, writes a file, and returns curated output while the log records
+ * each `tool/code-dispatch`. The keyless Loader smoke is in the sibling test.
+ */
+
+const PERSONA = 'You are a coding agent. You work by writing TypeScript programs for run_code: '
+  + 'batch related tool work into one program and print or return ONLY the findings that matter.'
+const WORKSPACE_PROBE = 'dragonfruit-8675309'
+
+let ctx: Context | undefined
+let workdir: string | undefined
+
+afterEach(async () => {
+  // Always dispose, even on failure/retry/timeout: agent-loop teardown stops
+  // the loop, the executor kills stray processes, and the code runtime's
+  // dispose awaits worker exits.
+  await ctx?.fiber.dispose()
+  ctx = undefined
+  if (workdir !== undefined) await rm(workdir, { recursive: true, force: true })
+  workdir = undefined
+})
+
+async function codeModeHarness(cwd: string): Promise<Context> {
+  const harness = new Context()
+  await harness.plugin(LlmService)
+  await harness.plugin(SessionStore)
+  await harness.plugin(SystemPrompt, { persona: PERSONA })
+  await harness.plugin(ToolRegistry, { mode: 'code' })
+  await harness.plugin(AgentRegistry)
+  await harness.plugin(AgentLoop, { agents: [] })
+  await harness.plugin(LlmDeepSeek)
+  await harness.plugin(LocalBashExecutor, { cwd, timeoutMs: 30_000 })
+  await harness.plugin(ToolBash)
+  await harness.plugin(WorkerCodeRuntime, {})
+  return harness
+}
+
+async function workspaceCodeModeHarness(): Promise<Context> {
+  const harness = new Context()
+  await harness.plugin(LlmService)
+  await harness.plugin(SessionStore)
+  await harness.plugin(SystemPrompt, { persona: PERSONA })
+  await harness.plugin(ToolRegistry, { mode: 'code' })
+  await harness.plugin(AgentRegistry)
+  await harness.plugin(LocalFileSystem, { cwd: '/' })
+  await harness.plugin(ToolFs)
+  await harness.plugin(WorkspaceContext, { maxBytes: 65536 })
+  await harness.plugin(AgentLoop, { agents: [] })
+  await harness.plugin(LlmDeepSeek, { models: [{ id: 'deepseek-v4-flash' }] })
+  await harness.plugin(WorkerCodeRuntime, {})
+  return harness
+}
+
+function waitForIdle(harness: Context, agent: Agent): Promise<void> {
+  return new Promise((resolve) => {
+    const dispose = harness.on('agent/status', (subject, status) => {
+      if (subject === agent && status === 'idle') {
+        dispose()
+        resolve()
+      }
+    })
+  })
+}
+
+describe.skipIf(!process.env.DEEPSEEK_API_KEY)('Code Mode: real model writes a program over real tools', () => {
+  it('collapses the wire tool list to [run_code], bridges sub-calls, and returns curated output', async () => {
+    workdir = await mkdtemp(join(tmpdir(), 'dsh-code-mode-e2e-'))
+    ctx = await codeModeHarness(workdir)
+    const agent = ctx.agentLoop.create(SessionId('e2e-code-mode'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+
+    agent.send([{
+      type: 'text',
+      text: 'Using one run_code program: run `echo alpha-7` with the bash tool, run `echo beta-9` with the bash tool, '
+        + 'then write both outputs joined by a plus sign into combined.txt (bash heredoc or redirect), '
+        + 'and return only the joined string.',
+    }])
+    await waitForIdle(ctx, agent)
+    const events: SessionEvent[] = [...agent.session.events]
+
+    // The wire contract: every request this session made offered EXACTLY ONE
+    // tool — run_code (the logged header snapshots the assembled list).
+    const headers = events.filter(event => event.type === 'request/header')
+    expect(headers.length).toBeGreaterThan(0)
+    for (const header of headers) {
+      expect(header.data.header.tools?.map(tool => tool.name)).toEqual([RUN_CODE_NAME])
+    }
+    // The model actually went through run_code…
+    const calls = events.filter(event => event.type === 'tool/call')
+    expect(calls.length).toBeGreaterThan(0)
+    expect(calls.every(event => event.data.name === RUN_CODE_NAME)).toBe(true)
+    // …and the program's tool calls landed as dispatch events under it.
+    const dispatches = events.filter(event => event.type === 'tool/code-dispatch')
+    expect(dispatches.length).toBeGreaterThanOrEqual(2)
+    expect(dispatches.every(event => event.data.name === 'bash')).toBe(true)
+    const parents = new Set(calls.map(event => event.data.callId))
+    expect(dispatches.every(event => parents.has(event.data.parentCallId))).toBe(true)
+
+    // World verification: the file the program wrote, and the curated answer.
+    const combined = await readFile(join(workdir, 'combined.txt'), 'utf8')
+    expect(combined).toContain('alpha-7')
+    expect(combined).toContain('beta-9')
+    const finalMessage = events.findLast(event => event.type === 'assistant/message')
+    const finalText = finalMessage !== undefined
+      ? finalMessage.data.content.filter(block => block.type === 'text').map(block => block.text).join('')
+      : ''
+    expect(finalText).toContain('alpha-7')
+    expect(finalText).toContain('beta-9')
+  }, 180_000)
+
+  it('delivers nested workspace instructions discovered by an fs sub-call after the outer result', async () => {
+    workdir = await mkdtemp(join(tmpdir(), 'dsh-code-mode-workspace-e2e-'))
+    await mkdir(join(workdir, '.git'), { recursive: true })
+    await mkdir(join(workdir, 'pkg/deep'), { recursive: true })
+    await writeFile(join(workdir, 'pkg/AGENTS.md'), `If asked for the Code Mode workspace handshake, reply with exactly ${WORKSPACE_PROBE} and nothing else.\n`)
+    await writeFile(join(workdir, 'pkg/deep/task.txt'), 'Touch this file to discover the nested instructions.\n')
+    ctx = await workspaceCodeModeHarness()
+    const handle = await ctx.agents.create({
+      sessionId: SessionId('e2e-code-mode-workspace-session'),
+      meta: { cwd: workdir },
+      agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+    })
+
+    handle.agent.send([{
+      type: 'text',
+      text: 'Use one run_code program to call tools.read on pkg/deep/task.txt. After it finishes, answer: Code Mode workspace handshake?',
+    }])
+    await waitForIdle(ctx, handle.agent)
+
+    const events: SessionEvent[] = [...handle.agent.session.events]
+    const dispatch = events.find(event => event.type === 'tool/code-dispatch' && event.data.name === 'read')
+    const outerResult = events.find(event => event.type === 'tool/result')
+    const workspaceContext = events.find(event => event.type === 'context/message'
+      && typeof event.data.meta === 'object'
+      && event.data.meta !== null
+      && !Array.isArray(event.data.meta)
+      && event.data.meta.kind === 'workspace-instructions')
+    expect(dispatch).toBeDefined()
+    expect(outerResult).toBeDefined()
+    expect(workspaceContext).toBeDefined()
+    expect(workspaceContext!.seq).toBeGreaterThan(outerResult!.seq)
+    const finalMessage = events.findLast(event => event.type === 'assistant/message')
+    const answer = finalMessage?.type === 'assistant/message'
+      ? finalMessage.data.content.filter(block => block.type === 'text').map(block => block.text).join('')
+      : ''
+    expect(answer).toContain(WORKSPACE_PROBE)
+  }, 180_000)
+})

examples/headless-agent/tests/coding-task.e2e.ts

@@ -0,0 +1,84 @@
+import { spawnSync } from 'node:child_process'
+import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import type { Context } from 'cordis'
+import { codingHarness, finalText, SYSTEM_PROMPT, waitForIdle } from './harness.ts'
+import { SessionId } from '@deepseek-ai/dsh-session'
+
+/**
+ * The swebench-style smoke test: a real model fixes a real bug in a temp
+ * directory using only the bash tool, and the fix is verified OUTSIDE the
+ * agent by re-running the test script. Key-gated.
+ */
+
+const TEST_FILE = [
+  "const assert = require('node:assert');",
+  "const { add } = require('./add.js');",
+  'assert.strictEqual(add(2, 3), 5);',
+  'assert.strictEqual(add(-1, 1), 0);',
+  "console.log('PASS');",
+  '',
+].join('\n')
+
+const BUGGY_ADD = [
+  '// A tiny module with an obvious bug.',
+  'function add(a, b) {',
+  '  return a - b;',
+  '}',
+  'module.exports = { add };',
+  '',
+].join('\n')
+
+let workdir: string | undefined
+let ctx: Context | undefined
+
+afterEach(async () => {
+  // Dispose the harness even on failure/retry: agent-loop teardown stops the
+  // loop and LocalBashExecutor teardown kills anything the model left running.
+  await ctx?.fiber.dispose()
+  ctx = undefined
+  if (workdir !== undefined) await rm(workdir, { recursive: true, force: true })
+  workdir = undefined
+})
+
+describe.skipIf(!process.env.DEEPSEEK_API_KEY)('coding task: fix a failing test via bash', () => {
+  it('repairs add.js so node add.test.js passes', async () => {
+    workdir = await mkdtemp(join(tmpdir(), 'dsh-coding-task-'))
+    await writeFile(join(workdir, 'add.js'), BUGGY_ADD)
+    await writeFile(join(workdir, 'add.test.js'), TEST_FILE)
+
+    // Confirm the fixture actually fails before the agent touches it.
+    const before = spawnSync('node', ['add.test.js'], { cwd: workdir })
+    expect(before.status).not.toBe(0)
+
+    ctx = await codingHarness(workdir, { persona: SYSTEM_PROMPT })
+    const agent = ctx.agentLoop.create(SessionId('e2e-task'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+
+    agent.send([{
+      type: 'text',
+      text: 'In the current directory, `node add.test.js` fails because add.js has a bug. '
+        + 'Fix add.js so the test passes, run `node add.test.js` to verify, and report the result. '
+        + 'Do not modify add.test.js.',
+    }])
+    await waitForIdle(ctx, agent)
+
+    // The agent claims success…
+    const summary = finalText([...agent.session.events]).toLowerCase()
+    expect(summary.length).toBeGreaterThan(0)
+
+    // …and the world agrees: the test passes when WE run it, and the test
+    // file is byte-identical (an agent that neutered the test instead of
+    // fixing the bug fails here, not just on a keyword probe).
+    const untouchedTest = await readFile(join(workdir, 'add.test.js'), 'utf8')
+    expect(untouchedTest).toBe(TEST_FILE)
+
+    const after = spawnSync('node', ['add.test.js'], { cwd: workdir, encoding: 'utf8' })
+    expect(after.stdout).toContain('PASS')
+    expect(after.status).toBe(0)
+
+    const fixed = await readFile(join(workdir, 'add.js'), 'utf8')
+    expect(fixed).not.toMatch(/a\s*-\s*b/)
+  }, 180_000)
+})

examples/headless-agent/tests/compaction.e2e.ts

@@ -0,0 +1,86 @@
+import { mkdtemp, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import type { Context } from 'cordis'
+import { codingHarness, finalText, SYSTEM_PROMPT, waitForIdle } from './harness.ts'
+import { SessionId } from '@deepseek-ai/dsh-session'
+
+/**
+ * Key-gated smoke for mid-session compaction. It verifies the compact event
+ * pair, replacement of older surface nodes, and a final answer after compaction.
+ */
+// FIXME(compaction-snapshot): this is the only full compaction coverage because
+// replay cannot serve the summarizer's unlogged model call.
+
+let workdir: string | undefined
+let ctx: Context | undefined
+
+afterEach(async () => {
+  await ctx?.fiber.dispose()
+  ctx = undefined
+  if (workdir !== undefined) await rm(workdir, { recursive: true, force: true })
+  workdir = undefined
+})
+
+describe.skipIf(!process.env.DEEPSEEK_API_KEY)('compaction: a long session compacts mid-flight and keeps running', () => {
+  it('summarizes older history into a checkpoint without breaking the task', async () => {
+    workdir = await mkdtemp(join(tmpdir(), 'dsh-compaction-'))
+    for (let i = 1; i <= 4; i++) {
+      await writeFile(join(workdir, `file${i}.txt`), `This is file number ${i}. `.repeat(50))
+    }
+
+    // Reasoning tokens require a larger generation cap than the retained checkpoint.
+    ctx = await codingHarness(workdir, {
+      persona: SYSTEM_PROMPT,
+      modelContextWindow: 2000,
+      compact: {
+        thresholdRatio: 0.5,
+        retainTokens: 400,
+        summarizationProvider: '',
+        summarizationModel: '',
+        maxTokens: 1024,
+        compactionRetries: 1,
+      },
+      persistenceRoot: join(workdir, '.sessions'),
+    })
+    const agent = ctx.agentLoop.create(SessionId('e2e-compaction'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+
+    agent.send([{
+      type: 'text',
+      text: 'Read file1.txt, file2.txt, file3.txt, and file4.txt one at a '
+        + 'time using cat (a separate bash command for each). After reading all four, tell me how '
+        + 'many files you read and the number mentioned in file1.txt.',
+    }])
+    await waitForIdle(ctx, agent)
+
+    const events = [...agent.session.events]
+
+    // A compaction ran: the start…end bracket landed in the real log.
+    const starts = events.filter(e => e.type === 'compact/start')
+    const ends = events.filter(e => e.type === 'compact/end')
+    expect(starts.length).toBeGreaterThan(0)
+    expect(ends.length).toBe(starts.length) // every start was released
+
+    // It succeeded at least once: a compact/summary provenance event and a
+    // replace-op user/message (the surface mutation) both landed.
+    const summaries = events.filter(e => e.type === 'compact/summary')
+    expect(summaries.length).toBeGreaterThan(0)
+    const replaceNode = events.find((e) => {
+      const se = e as unknown as { type: string; surfaceOp?: unknown }
+      return se.type === 'user/message' && typeof se.surfaceOp === 'object' && se.surfaceOp !== null
+    })
+    expect(replaceNode).toBeDefined()
+
+    // The summary shadowed real older nodes (the surface shrank vs. the raw
+    // message-producing event count).
+    const summaryData = summaries[0]!.data as { shadowedSeqs: number[] }
+    expect(summaryData.shadowedSeqs.length).toBeGreaterThan(0)
+
+    // The conversation survived compaction: the agent produced a final answer
+    // that reflects the work (it read four files).
+    const answer = finalText(events).toLowerCase()
+    expect(answer.length).toBeGreaterThan(0)
+    expect(answer).toMatch(/\b(4|four)\b/)
+  }, 240_000)
+})

examples/headless-agent/tests/fixtures/goal-domain/cordis.yml

@@ -0,0 +1,24 @@
+# Test-only composition: create one goal through a Loader-mounted step consumer.
+- id: cli-mock-llm
+  name: '../cli-mock-llm.ts'
+
+- id: bash
+  name: '@deepseek-ai/dsh-bash-local'
+
+- id: goal
+  name: '@deepseek-ai/dsh-goal'
+  config:
+    defaultMaxGoalRounds: 11
+
+- id: seed-goal
+  name: './seed-goal.ts'
+
+- id: cli-agent
+  name: '@deepseek-ai/dsh-cli-demo'
+  config:
+    provider: cli-mock
+    model: cli-mock
+    persona: 'Test the persisted goal domain.'
+    persistenceRoot: './.sessions'
+    persistenceCompression: none
+    workspaceContext: false

examples/headless-agent/tests/fixtures/goal-domain/seed-goal.ts

@@ -0,0 +1,17 @@
+/** Test-only Loader plugin that creates a goal at the first real step edge. */
+
+import type { Context } from 'cordis'
+import type {} from '@deepseek-ai/dsh-goal'
+
+export const name = 'seed-goal'
+export const inject = ['goals']
+
+export function apply(ctx: Context): void {
+  ctx.on('agent/pre-step', (agent) => {
+    if (ctx.goals.get(agent) !== undefined) return
+    ctx.goals.create(agent, {
+      objective: 'Prove the composed goal survives in the session log',
+      maxGoalRounds: 7,
+    })
+  })
+}

examples/headless-agent/tests/fixtures/time-context-driver.ts

@@ -0,0 +1,16 @@
+#!/usr/bin/env node
+/** Test driver that sends two turns through one Headless Loader composition. */
+
+import { boot, resolveConfigPath } from '@deepseek-ai/dsh-app-boot'
+import { runOneShot } from '@deepseek-ai/dsh-cli-demo/src/cli.ts'
+
+const configPath = process.argv[2]
+if (configPath === undefined) throw new Error('time-context driver requires a config path')
+
+const ctx = await boot('time-context-e2e', resolveConfigPath(configPath, undefined))
+try {
+  await runOneShot(ctx, { task: 'first' })
+  await runOneShot(ctx, { task: 'second' })
+} finally {
+  await ctx.fiber.dispose()
+}

examples/headless-agent/tests/fixtures/time-context-mock-llm.ts

@@ -0,0 +1,22 @@
+import type { Context } from 'cordis'
+import { LlmAdapter, type StreamChunk } from '@deepseek-ai/dsh-llm'
+
+/** Deterministic one-step adapter for the time-context Loader fixture. */
+class TimeContextMockAdapter extends LlmAdapter {
+  async * stream(): AsyncIterable<StreamChunk> {
+    const text = 'time context sampled'
+    yield { type: 'block-start', index: 0, blockType: 'text' }
+    yield { type: 'text-delta', index: 0, text }
+    yield { type: 'block-end', index: 0, block: { type: 'text', text } }
+    yield { type: 'usage', usage: { inputTokens: 1, outputTokens: 1 } }
+    yield { type: 'finish', reason: { kind: 'stop' } }
+  }
+}
+
+export const name = 'time-context-mock-llm'
+export const inject = ['llm']
+
+/** Register the test-only `time-context-mock` adapter. */
+export function apply(ctx: Context): void {
+  ctx.llm.registerAdapter(['time-context-mock'], new TimeContextMockAdapter())
+}

examples/headless-agent/tests/fixtures/time-context.cordis.yml

@@ -0,0 +1,19 @@
+# Test-only composition: keep time-context opt-in while exercising its real Loader/app path.
+- id: time-context-mock-llm
+  name: './time-context-mock-llm.ts'
+
+- id: bash
+  name: '@deepseek-ai/dsh-bash-local'
+
+- id: time-context
+  name: '@deepseek-ai/dsh-time-context'
+
+- id: cli-agent
+  name: '@deepseek-ai/dsh-cli-demo'
+  config:
+    provider: time-context-mock
+    model: time-context-mock
+    persona: 'Test the time-context plugin.'
+    persistenceRoot: './.sessions'
+    persistenceCompression: 'none'
+    workspaceContext: false

examples/headless-agent/tests/full-loop.e2e.ts

@@ -0,0 +1,48 @@
+import { mkdtemp, rm } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import type { Context } from 'cordis'
+import { codingHarness, finalText, SYSTEM_PROMPT, waitForIdle } from './harness.ts'
+import { SessionId } from '@deepseek-ai/dsh-session'
+
+/**
+ * The first place a REAL model meets the REAL bash tool: the cheap canary
+ * before the coding-task e2e. Key-gated (see vitest.e2e.config.ts).
+ */
+
+let ctx: Context | undefined
+let workdir: string | undefined
+
+afterEach(async () => {
+  // Always dispose the harness, even on failure/retry/timeout: agent-loop
+  // teardown stops the loop and LocalBashExecutor teardown kills any
+  // process the model left behind.
+  await ctx?.fiber.dispose()
+  ctx = undefined
+  if (workdir !== undefined) await rm(workdir, { recursive: true, force: true })
+  workdir = undefined
+})
+
+describe.skipIf(!process.env.DEEPSEEK_API_KEY)('full loop: real model + real bash tool', () => {
+  it('runs a bash command on request and reports its output', async () => {
+    workdir = await mkdtemp(join(tmpdir(), 'dsh-full-loop-e2e-'))
+    ctx = await codingHarness(workdir, { persona: SYSTEM_PROMPT })
+    const agent = ctx.agentLoop.create(SessionId('e2e-loop'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+
+    agent.send([{ type: 'text', text: 'Run `echo e2e-ok` with the bash tool and tell me its exact output.' }])
+    await waitForIdle(ctx, agent)
+
+    const events = [...agent.session.events]
+    const calls = events.filter(event => event.type === 'tool/call')
+    expect(calls.length).toBeGreaterThan(0)
+    expect(calls.some(event => event.data.name === 'bash')).toBe(true)
+
+    const results = events.filter(event => event.type === 'tool/result')
+    const resultTexts = results.flatMap(event =>
+      event.data.content.filter(block => block.type === 'text').map(block => block.text))
+    expect(resultTexts.some(text => text.includes('e2e-ok'))).toBe(true)
+
+    expect(finalText(events)).toContain('e2e-ok')
+  }, 120_000)
+})

examples/headless-agent/tests/harness.ts

@@ -0,0 +1,95 @@
+import { Context } from 'cordis'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import type { Agent } from '@deepseek-ai/dsh-agent'
+import AgentLoop from '@deepseek-ai/dsh-agent-loop'
+import { mountAgentLoopTestDependencies } from '@deepseek-ai/dsh-agent-loop-testkit'
+import { LocalBashExecutor } from '@deepseek-ai/dsh-bash-local'
+import * as ToolBash from '@deepseek-ai/dsh-tool-bash'
+import * as ToolTodo from '@deepseek-ai/dsh-tool-todo'
+import * as LlmDeepSeek from '@deepseek-ai/dsh-llm-deepseek'
+import TokenMeterService from '@deepseek-ai/dsh-token-meter'
+import ToolResultPruneService from '@deepseek-ai/dsh-compact-tool-result-prune'
+import SessionPersistenceJsonl from '@deepseek-ai/dsh-session-persistence-jsonl'
+import { BasicCompactService } from '@deepseek-ai/dsh-compact-basic'
+import type { BasicCompactConfig } from '@deepseek-ai/dsh-compact-basic'
+
+/**
+ * Shared harness for the headless-agent e2e suites: the full plugin stack
+ * with the real DeepSeek adapter and the real bash + todo_write tools. Lives
+ * outside the *.e2e.ts pattern so importing it never re-registers another
+ * file's tests.
+ */
+
+export const SYSTEM_PROMPT = 'You are a coding agent. Use bash for file operations '
+  + 'with cat/grep/heredocs; check [exit code: N] markers, '
+  + 'and report results briefly.'
+
+/** System prompt for the todo_write e2e: nudges the model to plan with the tool. */
+export const TODO_SYSTEM_PROMPT = 'You are a coding agent. For multi-step work, '
+  + 'use the todo_write tool to track a task list: send the WHOLE list each call, '
+  + 'keep at most one task in_progress (exactly one while work remains), and mark '
+  + 'a task completed as soon as it is done.'
+
+/** Options for {@link codingHarness}. */
+export interface CodingHarnessOptions {
+  /**
+   * Deployment persona for the tree (the system-prompt plugin's `persona`
+   * config — per-context, not per-agent). Omitted ⇒ no persona section.
+   */
+  persona?: string
+  /** Durable JSONL persistence root (the resume suite needs it; others stay file-free). */
+  persistenceRoot?: string
+  /**
+   * Load {@link BasicCompactService} with this config so the compaction e2e can
+   * trigger compaction at a small, controlled history size. Omitted ⇒ no
+   * compaction plugin (the default suites run without it).
+   */
+  compact?: BasicCompactConfig
+  /** Test-only context capacity advertised for `deepseek-v4-flash`. */
+  modelContextWindow?: number
+}
+
+export async function codingHarness(workdir: string, options: CodingHarnessOptions = {}): Promise<Context> {
+  const ctx = new Context()
+  await mountAgentLoopTestDependencies(ctx, {
+    systemPrompt: { persona: options.persona ?? '' },
+  })
+  await ctx.plugin(AgentLoop, { agents: [] })
+  await ctx.plugin(LlmDeepSeek, options.modelContextWindow === undefined ? {} : {
+    models: [{ id: 'deepseek-v4-flash', contextWindow: options.modelContextWindow }],
+  })
+  await ctx.plugin(LocalBashExecutor, { cwd: workdir, timeoutMs: 30_000 })
+  await ctx.plugin(ToolBash)
+  await ctx.plugin(ToolTodo)
+  // Compaction is opt-in: only the compaction e2e loads the reusable meter and backend.
+  if (options.compact !== undefined) {
+    await ctx.plugin(TokenMeterService)
+    await ctx.plugin(ToolResultPruneService)
+    await ctx.plugin(BasicCompactService, options.compact)
+  }
+  // Durable JSONL persistence is opt-in: only the resume e2e needs it, and the
+  // other suites stay file-free. Loaded last so a resume's deferred
+  // `ctx.inject(['sessionPersistence'])` resolves once this is present.
+  if (options.persistenceRoot !== undefined) await ctx.plugin(SessionPersistenceJsonl, { root: options.persistenceRoot })
+  return ctx
+}
+
+export function waitForIdle(ctx: Context, agent: Agent): Promise<void> {
+  return new Promise((resolve) => {
+    const dispose = ctx.on('agent/status', (subject, status) => {
+      if (subject === agent && status === 'idle') {
+        dispose()
+        resolve()
+      }
+    })
+  })
+}
+
+export function finalText(events: SessionEvent[]): string {
+  const message = events.findLast(event => event.type === 'assistant/message')
+  if (message?.type !== 'assistant/message') return ''
+  return message.data.content
+    .filter(block => block.type === 'text')
+    .map(block => block.text)
+    .join('')
+}

examples/headless-agent/tests/headless.snapshot.ts

@@ -4,21 +4,28 @@ import { fileURLToPath } from 'node:url'
 import {
   normalizeSessionLog,
   normalizeStdout,
+  refreshFixtureReplacements,
   scrubRequestHeaders,
+  stabilizeRefreshLog,
+  type HarvestedLog,
   type NormalizeContext,
 } from '@deepseek-ai/dsh-acp-snapshot'
 import { LOADER_SMOKE_TEST_TIMEOUT_MS, runLoaderSmoke } from '@deepseek-ai/dsh-loader-smoke'
 import { describe, expect, it } from 'vitest'
 
 const snapshotsDir = join(dirname(fileURLToPath(import.meta.url)), 'snapshots')
-const scenarioDir = join(snapshotsDir, 'advanced-toolchain')
-const sessionFixture = join(scenarioDir, 'session.jsonl')
-const streamExpected = join(scenarioDir, 'stream-json.expected.jsonl')
-const configPath = fileURLToPath(new URL('../advanced.cordis.snapshot.yml', import.meta.url))
+const advancedScenarioDir = join(snapshotsDir, 'advanced-toolchain')
+const advancedSessionFixture = join(advancedScenarioDir, 'session.jsonl')
+const advancedStreamExpected = join(advancedScenarioDir, 'stream-json.expected.jsonl')
+const advancedConfigPath = fileURLToPath(new URL('../advanced.cordis.snapshot.yml', import.meta.url))
 const ptyScenarioDir = join(snapshotsDir, 'pty-tools')
 const ptySessionFixture = join(ptyScenarioDir, 'session.jsonl')
 const ptyStreamExpected = join(ptyScenarioDir, 'stream-json.expected.jsonl')
 const ptyConfigPath = fileURLToPath(new URL('../pty.cordis.snapshot.yml', import.meta.url))
+const goalScenarioDir = join(snapshotsDir, 'goal-tools')
+const goalConfigPath = fileURLToPath(new URL('../goal.cordis.snapshot.yml', import.meta.url))
+const ralphScenarioDir = join(snapshotsDir, 'ralph-loop')
+const ralphConfigPath = fileURLToPath(new URL('../ralph.cordis.snapshot.yml', import.meta.url))
 const binScript = fileURLToPath(new URL('../../../packages/examples/cli-demo/src/bin.ts', import.meta.url))
 const tsconfigPath = fileURLToPath(new URL('../../../tsconfig.json', import.meta.url))
 const refreshing = process.env.DSH_SNAPSHOT === 'refresh'
@@ -74,12 +81,36 @@ function normalizeHeadlessStream(rawStdout: string, cwd: string): string {
   return normalizeStdout(`${normalizedRecords.map(record => JSON.stringify(record)).join('\n')}\n`, context)
 }
 
-async function advancedPrompt(): Promise<string> {
-  const input = JSON.parse(await readFile(join(scenarioDir, 'input.json'), 'utf8')) as {
+/** Zero durable goal timestamps inside both metadata records and rendered XML JSON. */
+function normalizeGoalTimestamps(value: unknown): unknown {
+  if (typeof value === 'string') {
+    return value.replace(/("(?:createdAt|updatedAt|clearedAt)":)\d+/g, '$10')
+  }
+  if (Array.isArray(value)) return value.map(normalizeGoalTimestamps)
+  if (value !== null && typeof value === 'object') {
+    return Object.fromEntries(Object.entries(value).map(([key, item]) => [
+      key,
+      ['createdAt', 'updatedAt', 'clearedAt'].includes(key) && typeof item === 'number'
+        ? 0
+        : normalizeGoalTimestamps(item),
+    ]))
+  }
+  return value
+}
+
+/** Normalize the stream's durable goal timestamps after the shared scrubbers. */
+function normalizeGoalStream(rawStdout: string, cwd: string): string {
+  return parseJsonl(normalizeHeadlessStream(rawStdout, cwd))
+    .map(record => JSON.stringify(normalizeGoalTimestamps(record)))
+    .join('\n') + '\n'
+}
+
+async function scenarioPrompt(dir: string, label: string): Promise<string> {
+  const input = JSON.parse(await readFile(join(dir, 'input.json'), 'utf8')) as {
     steps?: { op?: unknown; text?: unknown }[]
   }
   const prompt = input.steps?.find(step => step.op === 'prompt')?.text
-  if (typeof prompt !== 'string') throw new Error('advanced-toolchain input has no prompt step')
+  if (typeof prompt !== 'string') throw new Error(`${label} input has no prompt step`)
   return prompt
 }
 
@@ -94,24 +125,28 @@ async function persistedLogs(cwd: string): Promise<PersistedLog[]> {
 
 describe('headless stream-json snapshots', () => {
   it('replays the advanced toolchain through the one-shot app', async () => {
-    const prompt = await advancedPrompt()
-    const expectedSessions = await Promise.all([
-      sessionFixture,
-      join(scenarioDir, 'session.1.jsonl'),
-      join(scenarioDir, 'session.2.jsonl'),
-    ].map(file => readFile(file, 'utf8')))
+    const prompt = await scenarioPrompt(advancedScenarioDir, 'advanced-toolchain')
+    const fixtureFiles = [
+      advancedSessionFixture,
+      join(advancedScenarioDir, 'session.1.jsonl'),
+      join(advancedScenarioDir, 'session.2.jsonl'),
+    ]
+    let expectedSessions = await Promise.all(fixtureFiles.map(file => readFile(file, 'utf8')))
     let runCwd = ''
     const result = await runLoaderSmoke({
       label: 'advanced headless stream-json snapshot',
       tempDirPrefix: 'headless-snapshot-advanced-',
       binScript,
-      configPath,
-      binArgs: ['--config', configPath, '--output-format', 'stream-json', prompt],
+      configPath: advancedConfigPath,
+      binArgs: ['--config', advancedConfigPath, '--output-format', 'stream-json', prompt],
       tsconfigPath,
       env: {
         DSH_SNAPSHOT: 'replay',
-        DSH_SNAPSHOT_FILE: sessionFixture,
-        DSH_SNAPSHOT_CHILD_FILES: [join(scenarioDir, 'session.1.jsonl'), join(scenarioDir, 'session.2.jsonl')].join(delimiter),
+        DSH_SNAPSHOT_FILE: advancedSessionFixture,
+        DSH_SNAPSHOT_CHILD_FILES: [
+          join(advancedScenarioDir, 'session.1.jsonl'),
+          join(advancedScenarioDir, 'session.2.jsonl'),
+        ].join(delimiter),
         NODE_OPTIONS: [process.env.NODE_OPTIONS, '--disable-warning=ExperimentalWarning'].filter(Boolean).join(' '),
       },
       prepare: (cwd) => { runCwd = cwd },
@@ -125,6 +160,27 @@ describe('headless stream-json snapshots', () => {
         const children = logs.filter(log => typeof log.header.parentSession === 'string')
           .sort((left, right) => Number(left.header.createdAt) - Number(right.header.createdAt))
         const actualSessions = [parent, ...children]
+        if (refreshing) {
+          const harvested = actualSessions.map((log): HarvestedLog => ({
+            id: String(log.header.id),
+            createdAt: Number(log.header.createdAt),
+            ...typeof log.header.parentSession === 'string'
+              ? { parentSession: log.header.parentSession }
+              : {},
+            content: log.content,
+          }))
+          const replacements = refreshFixtureReplacements(harvested, expectedSessions)
+          expectedSessions = await Promise.all(actualSessions.map(async (actual, index) => {
+            const existing = expectedSessions[index]
+            const file = fixtureFiles[index]
+            if (existing === undefined || file === undefined) {
+              throw new Error(`headless snapshot has no fixture for persisted log ${index}`)
+            }
+            const stable = stabilizeRefreshLog(actual.content, existing, replacements)
+            await writeFile(file, stable)
+            return stable
+          }))
+        }
         const actualContext = contextFromLogs(actualSessions.map(log => log.content))
         const expectedContext = contextFromLogs(expectedSessions)
         for (const [index, actual] of actualSessions.entries()) {
@@ -136,6 +192,131 @@ describe('headless stream-json snapshots', () => {
       },
     })
 
+    expect(result.stderr).toBe('')
+    const normalized = normalizeHeadlessStream(result.stdout, runCwd)
+    if (refreshing) await writeFile(advancedStreamExpected, normalized)
+    expect(normalized).toBe(await readFile(advancedStreamExpected, 'utf8'))
+  }, LOADER_SMOKE_TEST_TIMEOUT_MS)
+
+  it('replays persisted goal tools through the one-shot app', async () => {
+    const prompt = await scenarioPrompt(goalScenarioDir, 'goal-tools')
+    const streamExpected = join(goalScenarioDir, 'stream-json.expected.jsonl')
+    let runCwd = ''
+    const result = await runLoaderSmoke({
+      label: 'goal tools headless stream-json snapshot',
+      tempDirPrefix: 'headless-snapshot-goal-tools-',
+      binScript,
+      configPath: goalConfigPath,
+      binArgs: ['--config', goalConfigPath, '--output-format', 'stream-json', prompt],
+      tsconfigPath,
+      env: {
+        DSH_SNAPSHOT: 'replay',
+        DSH_SNAPSHOT_FILE: join(goalScenarioDir, 'session.jsonl'),
+        DSH_SNAPSHOT_OVERRIDE: join(goalScenarioDir, 'replay.override.json'),
+        NODE_OPTIONS: [process.env.NODE_OPTIONS, '--disable-warning=ExperimentalWarning'].filter(Boolean).join(' '),
+      },
+      prepare: (cwd) => { runCwd = cwd },
+      inspect: async (cwd) => {
+        const logs = await persistedLogs(cwd)
+        expect(logs).toHaveLength(1)
+        const records = parseJsonl(logs[0]?.content ?? '')
+        const calls = records.filter(record => record.type === 'tool/call')
+          .map(record => (record.data as JsonObject | undefined)?.name)
+        expect(calls).toEqual(['create_goal', 'get_goal'])
+        const goalChanges = records.filter((record) => {
+          if (record.type !== 'context/message') return false
+          const data = record.data as JsonObject | undefined
+          const meta = data?.meta as JsonObject | undefined
+          return meta?.kind === 'goal/change'
+        })
+        expect(goalChanges).toHaveLength(1)
+        const data = goalChanges[0]?.data as JsonObject | undefined
+        const meta = data?.meta as JsonObject | undefined
+        const goal = meta?.goal as JsonObject | undefined
+        expect(meta?.operation).toBe('create')
+        expect(goal).toMatchObject({
+          objective: 'Finish the headless goal-tool snapshot proof',
+          phase: 'active',
+          maxGoalRounds: 7,
+        })
+      },
+    })
+
+    expect(result.stderr).toBe('')
+    const normalized = normalizeGoalStream(result.stdout, runCwd)
+    if (refreshing) await writeFile(streamExpected, normalized)
+    expect(normalized).toBe(await readFile(streamExpected, 'utf8'))
+  }, LOADER_SMOKE_TEST_TIMEOUT_MS)
+
+  it('replays two fresh Ralph rounds through the one-shot app', async () => {
+    const prompt = await scenarioPrompt(ralphScenarioDir, 'ralph-loop')
+    const streamExpected = join(ralphScenarioDir, 'stream-json.expected.jsonl')
+    let runCwd = ''
+    const result = await runLoaderSmoke({
+      label: 'Ralph loop headless stream-json snapshot',
+      tempDirPrefix: 'headless-snapshot-ralph-loop-',
+      binScript,
+      configPath: ralphConfigPath,
+      binArgs: ['--config', ralphConfigPath, '--output-format', 'stream-json', prompt],
+      tsconfigPath,
+      env: {
+        DSH_SNAPSHOT: 'replay',
+        DSH_SNAPSHOT_FILE: join(ralphScenarioDir, 'session.jsonl'),
+        DSH_SNAPSHOT_OVERRIDE: join(ralphScenarioDir, 'replay.override.json'),
+        DSH_SNAPSHOT_CHILD_FILES: [
+          join(ralphScenarioDir, 'session.1.jsonl'),
+          join(ralphScenarioDir, 'session.2.jsonl'),
+        ].join(delimiter),
+        NODE_OPTIONS: [process.env.NODE_OPTIONS, '--disable-warning=ExperimentalWarning'].filter(Boolean).join(' '),
+      },
+      prepare: (cwd) => { runCwd = cwd },
+      inspect: async (cwd) => {
+        const logs = await persistedLogs(cwd)
+        expect(logs).toHaveLength(3)
+        const parent = logs.find(log => typeof log.header.parentSession !== 'string')
+        if (parent === undefined) throw new Error('Ralph snapshot did not persist its parent session')
+        const parentId = parent.header.id
+        expect(typeof parentId).toBe('string')
+        const children = logs.filter(log => typeof log.header.parentSession === 'string')
+          .sort((left, right) => Number(left.header.createdAt) - Number(right.header.createdAt))
+        expect(children).toHaveLength(2)
+        expect(children.map(child => child.header.parentSession)).toEqual([parentId, parentId])
+        expect(children.map(child => child.header.cwd)).toEqual([parent.header.cwd, parent.header.cwd])
+        expect(parent.header.delegationDepth).toBe(0)
+        expect(children.map(child => child.header.delegationDepth)).toEqual([1, 1])
+        expect(children.map(child => child.header.seedLength)).toEqual([undefined, undefined])
+        expect(new Set(children.map(child => child.header.id)).size).toBe(2)
+
+        const parentRecords = parseJsonl(parent.content)
+        const parentCalls = parentRecords.filter(record => record.type === 'tool/call')
+        expect(parentCalls.map(record => (record.data as JsonObject | undefined)?.name)).toEqual(['ralph'])
+        const parentResult = parentRecords.find(record => record.type === 'tool/result')
+        const parentResultData = parentResult?.data as JsonObject | undefined
+        expect(parentResultData?.isError).toBe(false)
+        expect(JSON.stringify(parentResultData?.content)).toContain('reported completion after 2 rounds')
+
+        const childRecords = children.map(child => parseJsonl(child.content))
+        const childPrompts = childRecords.map((records) => {
+          const message = records.find(record => record.type === 'user/message')
+          return JSON.stringify((message?.data as JsonObject | undefined)?.content)
+        })
+        expect(childPrompts[0]).toContain('Ralph round: 1 of 2.')
+        expect(childPrompts[0]).toContain('(none — this is the first round)')
+        expect(childPrompts[0]).not.toContain('ROUND_ONE_HANDOFF')
+        expect(childPrompts[1]).toContain('Ralph round: 2 of 2.')
+        expect(childPrompts[1]).toContain('ROUND_ONE_HANDOFF')
+        for (const childPrompt of childPrompts) {
+          expect(childPrompt).toContain('Prove two fresh Ralph rounds through the shipped headless app.')
+          expect(childPrompt).not.toContain('Run a two-round fresh-agent Ralph loop')
+        }
+        for (const records of childRecords) {
+          const calls = records.filter(record => record.type === 'tool/call')
+          expect(calls.map(record => (record.data as JsonObject | undefined)?.name))
+            .toEqual(['structured_output'])
+        }
+      },
+    })
+
     expect(result.stderr).toBe('')
     const normalized = normalizeHeadlessStream(result.stdout, runCwd)
     if (refreshing) await writeFile(streamExpected, normalized)
@@ -148,7 +329,7 @@ describe('headless stream-json snapshots', () => {
     }
     const prompt = input.steps?.find(step => step.op === 'prompt')?.text
     if (typeof prompt !== 'string') throw new Error('pty-tools input has no prompt step')
-    const expectedSession = await readFile(ptySessionFixture, 'utf8')
+    let expectedSession = await readFile(ptySessionFixture, 'utf8')
     let runCwd = ''
     const result = await runLoaderSmoke({
       label: 'headless persistent PTY snapshot',
@@ -168,6 +349,16 @@ describe('headless stream-json snapshots', () => {
         expect(logs).toHaveLength(1)
         const actual = logs[0]
         if (actual === undefined) throw new Error('headless PTY snapshot did not persist its session')
+        if (refreshing) {
+          const harvested: HarvestedLog = {
+            id: String(actual.header.id),
+            createdAt: Number(actual.header.createdAt),
+            content: actual.content,
+          }
+          const replacements = refreshFixtureReplacements([harvested], [expectedSession])
+          expectedSession = stabilizeRefreshLog(actual.content, expectedSession, replacements)
+          await writeFile(ptySessionFixture, expectedSession)
+        }
         const actualContext = contextFromLogs([actual.content])
         const expectedContext = contextFromLogs([expectedSession])
         expect(scrubRequestHeaders(normalizeSessionLog(actual.content, actualContext)))

examples/headless-agent/tests/keyless-smoke.e2e.ts

@@ -1,4 +1,7 @@
-import { readdir } from 'node:fs/promises'
+import { readFile, readdir } from 'node:fs/promises'
+import { zstdDecompress } from 'node:zlib'
+import { promisify } from 'node:util'
+import { join } from 'node:path'
 import { fileURLToPath } from 'node:url'
 import { describe, expect, it } from 'vitest'
 import { LOADER_SMOKE_TEST_TIMEOUT_MS, runLoaderSmoke } from '@deepseek-ai/dsh-loader-smoke'
@@ -7,10 +10,11 @@ import type { SessionEvent } from '@deepseek-ai/dsh-session'
 const binScript = fileURLToPath(new URL('../../../packages/examples/cli-demo/src/bin.ts', import.meta.url))
 const configPath = fileURLToPath(new URL('./fixtures/cli.cordis.yml', import.meta.url))
 const tsconfigPath = fileURLToPath(new URL('../../../tsconfig.json', import.meta.url))
+const decompress = promisify(zstdDecompress)
 
 describe('headless-agent keyless smoke', () => {
   it('boots the real Loader tree, runs a real bash tool round trip, and persists the turn', async () => {
-    let persisted = false
+    let persistedHeader: Record<string, unknown> | undefined
     const { stdout, stderr } = await runLoaderSmoke({
       label: 'headless-agent',
       tempDirPrefix: 'headless-agent-smoke-',
@@ -20,7 +24,11 @@ describe('headless-agent keyless smoke', () => {
       tsconfigPath,
       inspect: async (cwd) => {
         const files = await readdir(cwd, { recursive: true })
-        persisted = files.some(file => file.endsWith('.jsonl'))
+        const relativePath = files.find(file => file.endsWith('.jsonl.zstd'))
+        if (relativePath === undefined) return
+        const compressed = await readFile(join(cwd, relativePath))
+        expect(compressed.subarray(0, 4).toString('hex')).toBe('28b52ffd')
+        persistedHeader = JSON.parse((await decompress(compressed)).toString()) as Record<string, unknown>
       },
     })
     const lines = stdout.trimEnd().split('\n').map(line => JSON.parse(line) as Record<string, unknown>)
@@ -38,6 +46,6 @@ describe('headless-agent keyless smoke', () => {
       usage: { inputTokens: 18, outputTokens: 8, cacheReadTokens: 2, reasoningTokens: 1 },
     })
     expect(String(result?.['result'])).toContain('CLI_TOOL_ROUND_TRIP')
-    expect(persisted).toBe(true)
+    expect(persistedHeader).toMatchObject({ type: 'session' })
   }, LOADER_SMOKE_TEST_TIMEOUT_MS)
 })

examples/headless-agent/tests/resume.e2e.ts

@@ -0,0 +1,67 @@
+import { mkdtemp, rm } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import type { Context } from 'cordis'
+import { SessionId } from '@deepseek-ai/dsh-session'
+import { codingHarness, finalText, SYSTEM_PROMPT, waitForIdle } from './harness.ts'
+
+/**
+ * Proves durable conversation continuity end-to-end: run 1 tells the REAL model
+ * a fact and persists the turn to JSONL; run 2 is a fresh harness (new Context,
+ * same `.sessions` root) that RESUMES the persisted session id and asks the
+ * model to recall the fact. The recall can only come from the rehydrated event
+ * log — a fresh session would have no idea. Key-gated like the other e2es.
+ */
+
+const SECRET = 'plum-galaxy-1791'
+const SESSION_ID = SessionId('resume-e2e-session')
+
+let ctx: Context | undefined
+let root: string | undefined
+
+afterEach(async () => {
+  // Dispose even on failure/retry: agent-loop teardown stops the loop and the
+  // JSONL backend flushes; then drop the on-disk session log.
+  await ctx?.fiber.dispose()
+  ctx = undefined
+  if (root !== undefined) await rm(root, { recursive: true, force: true })
+  root = undefined
+})
+
+describe.skipIf(!process.env.DEEPSEEK_API_KEY)('resume: continue a persisted session across processes', () => {
+  it('recalls a fact stored in a prior, separately-disposed session', async () => {
+    root = await mkdtemp(join(tmpdir(), 'dsh-resume-e2e-'))
+
+    // Run 1: a fresh agent on a KNOWN session id learns a secret, then we
+    // dispose the whole context (simulating process exit) so only the JSONL
+    // log on disk survives.
+    ctx = await codingHarness(process.cwd(), { persona: SYSTEM_PROMPT, persistenceRoot: root })
+    const first = (await ctx.agents.create({
+      sessionId: SESSION_ID,
+      agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+    })).agent
+    first.send([{ type: 'text', text: `Remember this code for later: ${SECRET}. Just acknowledge it.` }])
+    await waitForIdle(ctx, first)
+    await ctx.fiber.dispose()
+    ctx = undefined
+
+    // Run 2: a brand-new context over the SAME root resumes the persisted
+    // session. The loaded event log seeds the live session, so the model sees
+    // run 1's exchange as conversation history.
+    ctx = await codingHarness(process.cwd(), { persona: SYSTEM_PROMPT, persistenceRoot: root })
+    const resumed = (await ctx.agents.resume({
+      resumeSessionId: SESSION_ID,
+      agentOptions: { provider: 'deepseek', model: 'deepseek-v4-flash' },
+    })).agent
+    expect(resumed.session.id).toBe(SESSION_ID)
+    // The prior user turn is in the rehydrated log before the model is asked.
+    expect(JSON.stringify(resumed.session.deriveMessages())).toContain(SECRET)
+
+    resumed.send([{ type: 'text', text: 'What was the code I asked you to remember? Reply with just the code.' }])
+    await waitForIdle(ctx, resumed)
+
+    // The model recalls it — only possible from the resumed history.
+    expect(finalText([...resumed.session.events])).toContain(SECRET)
+  }, 180_000)
+})

examples/headless-agent/tests/snapshots/advanced-toolchain/stream-json.expected.jsonl

@@ -1,64 +1,65 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Run this advanced flow exactly once: mount a no-op Cordis plugin named snapshot-marker; use run_code to inspect the live dynamic mounts through tools.cordis_inspect; delegate once to a direct spawn child; run one workflow that delegates to another spawn child; unmount dyn-1; then reply with exactly ADVANCED_HEADLESS_OK."}],"source":{"kind":"user"}},"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":2,"time":0,"data":{"turn":1,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":3,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":4,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-mount","name":"cordis_mount","argumentsDelta":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":9,"time":0,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[4,5,6,7,8],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":10,"time":0,"data":{"turn":1,"step":1,"callId":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"advanced-mount","content":[{"type":"text","text":"mounted dyn-1 (plugin \"snapshot-marker\", state: active)"}],"isError":false},"sourceEventSeqs":[10],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":12,"time":0,"data":{"turn":1,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":13,"time":0,"data":{"turn":1,"step":2}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":14,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-code","name":"run_code","argumentsDelta":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":19,"time":0,"data":{"turn":1,"step":2,"content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[14,15,16,17,18],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":20,"time":0,"data":{"turn":1,"step":2,"callId":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/code-dispatch","seq":21,"time":0,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"dynamic"},"isError":false,"resultSummary":"## dynamic\n- dyn-1: snapshot-marker [active]"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":22,"time":0,"data":{"turn":1,"step":2,"callId":"advanced-code","content":[{"type":"text","text":"## dynamic\n- dyn-1: snapshot-marker [active]"}],"isError":false,"meta":{"logs":[]}},"sourceEventSeqs":[20],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":23,"time":0,"data":{"turn":1,"step":2}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":24,"time":0,"data":{"turn":1,"step":3}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":25,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":26,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-direct-child","name":"subagent","argumentsDelta":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":30,"time":0,"data":{"turn":1,"step":3,"content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":31,"time":0,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":32,"time":0,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"isError":false},"sourceEventSeqs":[31],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":33,"time":0,"data":{"turn":1,"step":3}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":34,"time":0,"data":{"turn":1,"step":4}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":35,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":36,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-workflow","name":"workflow","argumentsDelta":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":37,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":38,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":39,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":40,"time":0,"data":{"turn":1,"step":4,"content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[35,36,37,38,39],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":41,"time":0,"data":{"turn":1,"step":4,"callId":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":42,"time":0,"data":{"turn":1,"step":4,"callId":"advanced-workflow","content":[{"type":"text","text":"workflow \"advanced-headless-snapshot\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WORKFLOW_CHILD_OK\"\n}"}],"isError":false},"sourceEventSeqs":[41],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":43,"time":0,"data":{"turn":1,"step":4}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":44,"time":0,"data":{"turn":1,"step":5}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":45,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":46,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-unmount","name":"cordis_unmount","argumentsDelta":"{\"id\":\"dyn-1\"}"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":47,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":48,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":49,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":50,"time":0,"data":{"turn":1,"step":5,"content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[45,46,47,48,49],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":51,"time":0,"data":{"turn":1,"step":5,"callId":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":52,"time":0,"data":{"turn":1,"step":5,"callId":"advanced-unmount","content":[{"type":"text","text":"unmounted dyn-1 (plugin \"snapshot-marker\")"}],"isError":false},"sourceEventSeqs":[51],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":53,"time":0,"data":{"turn":1,"step":5}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":54,"time":0,"data":{"turn":1,"step":6}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":55,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":56,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"text-delta","index":0,"text":"ADVANCED_HEADLESS_OK"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":57,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"ADVANCED_HEADLESS_OK"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":58,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":59,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":60,"time":0,"data":{"turn":1,"step":6,"content":[{"type":"text","text":"ADVANCED_HEADLESS_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[55,56,57,58,59],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":61,"time":0,"data":{"turn":1,"step":6}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":62,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"Run this advanced flow exactly","messageSeqs":[1],"source":{"kind":"fallback"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-mount","name":"cordis_mount","argumentsDelta":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"callId":"advanced-mount","content":[{"type":"text","text":"mounted dyn-1 (plugin \"snapshot-marker\", state: active)"}],"isError":false},"sourceEventSeqs":[11],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":13,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":14,"time":0,"data":{"turn":1,"step":2}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-code","name":"run_code","argumentsDelta":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":21,"time":0,"data":{"turn":1,"step":2,"callId":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/code-dispatch","seq":22,"time":0,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"dynamic"},"isError":false,"resultSummary":"## dynamic\n- dyn-1: snapshot-marker [active]"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":23,"time":0,"data":{"turn":1,"step":2,"callId":"advanced-code","content":[{"type":"text","text":"## dynamic\n- dyn-1: snapshot-marker [active]"}],"isError":false,"meta":{"logs":[]}},"sourceEventSeqs":[21],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":24,"time":0,"data":{"turn":1,"step":2}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":25,"time":0,"data":{"turn":1,"step":3}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":26,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-direct-child","name":"subagent","argumentsDelta":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":30,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":31,"time":0,"data":{"turn":1,"step":3,"content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[26,27,28,29,30],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":32,"time":0,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":33,"time":0,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"isError":false},"sourceEventSeqs":[32],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":34,"time":0,"data":{"turn":1,"step":3}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":35,"time":0,"data":{"turn":1,"step":4}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":36,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":37,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-workflow","name":"workflow","argumentsDelta":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":38,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":39,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":40,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":41,"time":0,"data":{"turn":1,"step":4,"content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[36,37,38,39,40],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":42,"time":0,"data":{"turn":1,"step":4,"callId":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-headless-snapshot\",\"description\":\"exercise one workflow child through the headless agent\"}}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":43,"time":0,"data":{"turn":1,"step":4,"callId":"advanced-workflow","content":[{"type":"text","text":"workflow \"advanced-headless-snapshot\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WORKFLOW_CHILD_OK\"\n}"}],"isError":false},"sourceEventSeqs":[42],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":44,"time":0,"data":{"turn":1,"step":4}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":45,"time":0,"data":{"turn":1,"step":5}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":46,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":47,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-unmount","name":"cordis_unmount","argumentsDelta":"{\"id\":\"dyn-1\"}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":48,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":49,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":50,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":51,"time":0,"data":{"turn":1,"step":5,"content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[46,47,48,49,50],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":52,"time":0,"data":{"turn":1,"step":5,"callId":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":53,"time":0,"data":{"turn":1,"step":5,"callId":"advanced-unmount","content":[{"type":"text","text":"unmounted dyn-1 (plugin \"snapshot-marker\")"}],"isError":false},"sourceEventSeqs":[52],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":54,"time":0,"data":{"turn":1,"step":5}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":55,"time":0,"data":{"turn":1,"step":6}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":56,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":57,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"text-delta","index":0,"text":"ADVANCED_HEADLESS_OK"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":58,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"ADVANCED_HEADLESS_OK"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":59,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":60,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":61,"time":0,"data":{"turn":1,"step":6,"content":[{"type":"text","text":"ADVANCED_HEADLESS_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[56,57,58,59,60],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":62,"time":0,"data":{"turn":1,"step":6}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":63,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}
 {"type":"result","success":true,"sessionId":"{{sessionId}}","turn":1,"result":"ADVANCED_HEADLESS_OK","reason":{"kind":"completed"},"usage":{"inputTokens":18,"outputTokens":18}}

examples/headless-agent/tests/snapshots/goal-tools/input.json

@@ -0,0 +1,8 @@
+{
+  "steps": [
+    {
+      "op": "prompt",
+      "text": "Create a durable goal to finish the snapshot proof, then inspect it."
+    }
+  ]
+}

examples/headless-agent/tests/snapshots/goal-tools/replay.override.json

@@ -0,0 +1,32 @@
+[
+  {
+    "kind": "chunks",
+    "chunks": [
+      { "type": "block-start", "index": 0, "blockType": "tool-call" },
+      { "type": "tool-call-delta", "index": 0, "id": "call_goal_create", "name": "create_goal", "argumentsDelta": "{\"objective\":\"Finish the headless goal-tool snapshot proof\",\"max_goal_rounds\":7}" },
+      { "type": "block-end", "index": 0, "block": { "type": "tool-call", "id": "call_goal_create", "name": "create_goal", "arguments": "{\"objective\":\"Finish the headless goal-tool snapshot proof\",\"max_goal_rounds\":7}" } },
+      { "type": "usage", "usage": { "inputTokens": 20, "outputTokens": 8 } },
+      { "type": "finish", "reason": { "kind": "tool-calls" } }
+    ]
+  },
+  {
+    "kind": "chunks",
+    "chunks": [
+      { "type": "block-start", "index": 0, "blockType": "tool-call" },
+      { "type": "tool-call-delta", "index": 0, "id": "call_goal_get", "name": "get_goal", "argumentsDelta": "{}" },
+      { "type": "block-end", "index": 0, "block": { "type": "tool-call", "id": "call_goal_get", "name": "get_goal", "arguments": "{}" } },
+      { "type": "usage", "usage": { "inputTokens": 30, "outputTokens": 4 } },
+      { "type": "finish", "reason": { "kind": "tool-calls" } }
+    ]
+  },
+  {
+    "kind": "chunks",
+    "chunks": [
+      { "type": "block-start", "index": 0, "blockType": "text" },
+      { "type": "text-delta", "index": 0, "text": "GOAL READY" },
+      { "type": "block-end", "index": 0, "block": { "type": "text", "text": "GOAL READY" } },
+      { "type": "usage", "usage": { "inputTokens": 35, "outputTokens": 2 } },
+      { "type": "finish", "reason": { "kind": "stop" } }
+    ]
+  }
+]

examples/headless-agent/tests/snapshots/goal-tools/stream-json.expected.jsonl

@@ -0,0 +1,35 @@
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Create a durable goal to finish the snapshot proof, then inspect it."}],"source":{"kind":"user"}},"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"Create a durable goal to","messageSeqs":[1],"source":{"kind":"fallback"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_goal_create","name":"create_goal","argumentsDelta":"{\"objective\":\"Finish the headless goal-tool snapshot proof\",\"max_goal_rounds\":7}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the headless goal-tool snapshot proof\",\"max_goal_rounds\":7}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":20,"outputTokens":8}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the headless goal-tool snapshot proof\",\"max_goal_rounds\":7}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":20,"outputTokens":8}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the headless goal-tool snapshot proof\",\"max_goal_rounds\":7}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"callId":"call_goal_create","content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the headless goal-tool snapshot proof\",\"phase\":\"active\",\"roundsStarted\":0,\"maxGoalRounds\":7},\"activation\":\"armed\"}"}],"isError":false},"sourceEventSeqs":[11],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"context/message","seq":13,"time":0,"data":{"content":[{"type":"text","text":"<goal_state>{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the headless goal-tool snapshot proof\",\"phase\":\"active\",\"maxGoalRounds\":7},\"roundsStarted\":0,\"createdAt\":0,\"updatedAt\":0}</goal_state>"}],"source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":0},"meta":{"kind":"goal/change","version":1,"operation":"create","goal":{"id":"goal-{{sessionId}}","revision":1,"objective":"Finish the headless goal-tool snapshot proof","phase":"active","maxGoalRounds":7},"roundsStarted":0,"createdAt":0,"updatedAt":0}},"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":14,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":15,"time":0,"data":{"turn":1,"step":2}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"call_goal_get","name":"get_goal","argumentsDelta":"{}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":30,"outputTokens":4}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":20,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":21,"time":0,"data":{"turn":1,"step":2,"content":[{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":30,"outputTokens":4}},"sourceEventSeqs":[16,17,18,19,20],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":22,"time":0,"data":{"turn":1,"step":2,"callId":"call_goal_get","name":"get_goal","arguments":"{}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":23,"time":0,"data":{"turn":1,"step":2,"callId":"call_goal_get","content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the headless goal-tool snapshot proof\",\"phase\":\"active\",\"roundsStarted\":0,\"maxGoalRounds\":7},\"activation\":\"armed\"}"}],"isError":false},"sourceEventSeqs":[22],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":24,"time":0,"data":{"turn":1,"step":2}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":25,"time":0,"data":{"turn":1,"step":3}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":26,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"text-delta","index":0,"text":"GOAL READY"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"GOAL READY"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":35,"outputTokens":2}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":30,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":31,"time":0,"data":{"turn":1,"step":3,"content":[{"type":"text","text":"GOAL READY"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":35,"outputTokens":2}},"sourceEventSeqs":[26,27,28,29,30],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":32,"time":0,"data":{"turn":1,"step":3}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":33,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}
+{"type":"result","success":true,"sessionId":"{{sessionId}}","turn":1,"result":"GOAL READY","reason":{"kind":"completed"},"usage":{"inputTokens":85,"outputTokens":14}}

examples/headless-agent/tests/snapshots/pty-tools/stream-json.expected.jsonl

@@ -1,73 +1,74 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Exercise the six PTY tools in order, including one missing-session signal error, then reply DONE."}],"source":{"kind":"user"}},"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":2,"time":0,"data":{"turn":1,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":3,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":4,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-spawn","name":"terminal_open","argumentsDelta":"{\"type\":\"shell\",\"name\":\"main\"}"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":9,"time":0,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[4,5,6,7,8],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":10,"time":0,"data":{"turn":1,"step":1,"callId":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"pty-spawn","content":[{"type":"text","text":"started terminal session pty-1 (main) [type: shell]\ndsh> "}],"isError":false},"sourceEventSeqs":[10],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":12,"time":0,"data":{"turn":1,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":13,"time":0,"data":{"turn":1,"step":2}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":14,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-send","name":"terminal_send","argumentsDelta":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-send","name":"terminal_send","arguments":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":19,"time":0,"data":{"turn":1,"step":2,"content":[{"type":"tool-call","id":"pty-send","name":"terminal_send","arguments":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[14,15,16,17,18],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":20,"time":0,"data":{"turn":1,"step":2,"callId":"pty-send","name":"terminal_send","arguments":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":21,"time":0,"data":{"turn":1,"step":2,"callId":"pty-send","content":[{"type":"text","text":"printf 'PTY_OK\\n'\nPTY_OK\ndsh> \n[wait: stdin_read]\n[session: running]"}],"isError":false,"meta":{"viewport":"printf 'PTY_OK\\n'\nPTY_OK\ndsh> ","waitReason":"stdin_read","sessionStatus":{"kind":"running"},"truncated":false}},"sourceEventSeqs":[20],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":22,"time":0,"data":{"turn":1,"step":2}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":23,"time":0,"data":{"turn":1,"step":3}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":24,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":25,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-read","name":"terminal_read","argumentsDelta":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":26,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-read","name":"terminal_read","arguments":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":29,"time":0,"data":{"turn":1,"step":3,"content":[{"type":"tool-call","id":"pty-read","name":"terminal_read","arguments":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[24,25,26,27,28],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":30,"time":0,"data":{"turn":1,"step":3,"callId":"pty-read","name":"terminal_read","arguments":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":31,"time":0,"data":{"turn":1,"step":3,"callId":"pty-read","content":[{"type":"text","text":"dsh> printf 'PTY_OK\\n'\nPTY_OK\ndsh> \n[lines: 0-3 of 3]"}],"isError":false},"sourceEventSeqs":[30],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":32,"time":0,"data":{"turn":1,"step":3}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":33,"time":0,"data":{"turn":1,"step":4}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":34,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":35,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-signal","name":"terminal_signal","argumentsDelta":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":36,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-signal","name":"terminal_signal","arguments":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":37,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":38,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":39,"time":0,"data":{"turn":1,"step":4,"content":[{"type":"tool-call","id":"pty-signal","name":"terminal_signal","arguments":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[34,35,36,37,38],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":40,"time":0,"data":{"turn":1,"step":4,"callId":"pty-signal","name":"terminal_signal","arguments":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":41,"time":0,"data":{"turn":1,"step":4,"callId":"pty-signal","content":[{"type":"text","text":"Error: unknown PTY session pty-missing"}],"isError":true},"sourceEventSeqs":[40],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":42,"time":0,"data":{"turn":1,"step":4}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":43,"time":0,"data":{"turn":1,"step":5}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":44,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":45,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-kill","name":"terminal_close","argumentsDelta":"{\"sessionId\":\"pty-1\"}"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":46,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":47,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":48,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":49,"time":0,"data":{"turn":1,"step":5,"content":[{"type":"tool-call","id":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[44,45,46,47,48],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":50,"time":0,"data":{"turn":1,"step":5,"callId":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":51,"time":0,"data":{"turn":1,"step":5,"callId":"pty-kill","content":[{"type":"text","text":"closed terminal session pty-1"}],"isError":false},"sourceEventSeqs":[50],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":52,"time":0,"data":{"turn":1,"step":5}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":53,"time":0,"data":{"turn":1,"step":6}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":54,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":55,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-list","name":"terminal_list","argumentsDelta":"{}"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":56,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-list","name":"terminal_list","arguments":"{}"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":57,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":58,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":59,"time":0,"data":{"turn":1,"step":6,"content":[{"type":"tool-call","id":"pty-list","name":"terminal_list","arguments":"{}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[54,55,56,57,58],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":60,"time":0,"data":{"turn":1,"step":6,"callId":"pty-list","name":"terminal_list","arguments":"{}"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":61,"time":0,"data":{"turn":1,"step":6,"callId":"pty-list","content":[{"type":"text","text":"(no terminal sessions)"}],"isError":false},"sourceEventSeqs":[60],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":62,"time":0,"data":{"turn":1,"step":6}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":63,"time":0,"data":{"turn":1,"step":7}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":64,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":65,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"text-delta","index":0,"text":"DONE"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":66,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":67,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":3}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":68,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":69,"time":0,"data":{"turn":1,"step":7,"content":[{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":3}},"sourceEventSeqs":[64,65,66,67,68],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":70,"time":0,"data":{"turn":1,"step":7}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":71,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"Exercise the six PTY tools","messageSeqs":[1],"source":{"kind":"fallback"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-spawn","name":"terminal_open","argumentsDelta":"{\"type\":\"shell\",\"name\":\"main\"}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"callId":"pty-spawn","content":[{"type":"text","text":"started terminal session pty-1 (main) [type: shell]\ndsh> "}],"isError":false},"sourceEventSeqs":[11],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":13,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":14,"time":0,"data":{"turn":1,"step":2}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-send","name":"terminal_send","argumentsDelta":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-send","name":"terminal_send","arguments":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"content":[{"type":"tool-call","id":"pty-send","name":"terminal_send","arguments":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":21,"time":0,"data":{"turn":1,"step":2,"callId":"pty-send","name":"terminal_send","arguments":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":22,"time":0,"data":{"turn":1,"step":2,"callId":"pty-send","content":[{"type":"text","text":"printf 'PTY_OK\\n'\nPTY_OK\ndsh> \n[wait: stdin_read]\n[session: running]"}],"isError":false,"meta":{"viewport":"printf 'PTY_OK\\n'\nPTY_OK\ndsh> ","waitReason":"stdin_read","sessionStatus":{"kind":"running"},"truncated":false}},"sourceEventSeqs":[21],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":23,"time":0,"data":{"turn":1,"step":2}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":24,"time":0,"data":{"turn":1,"step":3}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":25,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":26,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-read","name":"terminal_read","argumentsDelta":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-read","name":"terminal_read","arguments":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":30,"time":0,"data":{"turn":1,"step":3,"content":[{"type":"tool-call","id":"pty-read","name":"terminal_read","arguments":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":31,"time":0,"data":{"turn":1,"step":3,"callId":"pty-read","name":"terminal_read","arguments":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":32,"time":0,"data":{"turn":1,"step":3,"callId":"pty-read","content":[{"type":"text","text":"dsh> printf 'PTY_OK\\n'\nPTY_OK\ndsh> \n[lines: 0-3 of 3]"}],"isError":false},"sourceEventSeqs":[31],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":33,"time":0,"data":{"turn":1,"step":3}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":34,"time":0,"data":{"turn":1,"step":4}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":35,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":36,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-signal","name":"terminal_signal","argumentsDelta":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":37,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-signal","name":"terminal_signal","arguments":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":38,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":39,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":40,"time":0,"data":{"turn":1,"step":4,"content":[{"type":"tool-call","id":"pty-signal","name":"terminal_signal","arguments":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[35,36,37,38,39],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":41,"time":0,"data":{"turn":1,"step":4,"callId":"pty-signal","name":"terminal_signal","arguments":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":42,"time":0,"data":{"turn":1,"step":4,"callId":"pty-signal","content":[{"type":"text","text":"Error: unknown PTY session pty-missing"}],"isError":true},"sourceEventSeqs":[41],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":43,"time":0,"data":{"turn":1,"step":4}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":44,"time":0,"data":{"turn":1,"step":5}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":45,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":46,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-kill","name":"terminal_close","argumentsDelta":"{\"sessionId\":\"pty-1\"}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":47,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":48,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":49,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":50,"time":0,"data":{"turn":1,"step":5,"content":[{"type":"tool-call","id":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[45,46,47,48,49],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":51,"time":0,"data":{"turn":1,"step":5,"callId":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":52,"time":0,"data":{"turn":1,"step":5,"callId":"pty-kill","content":[{"type":"text","text":"closed terminal session pty-1"}],"isError":false},"sourceEventSeqs":[51],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":53,"time":0,"data":{"turn":1,"step":5}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":54,"time":0,"data":{"turn":1,"step":6}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":55,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":56,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-list","name":"terminal_list","argumentsDelta":"{}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":57,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-list","name":"terminal_list","arguments":"{}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":58,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":59,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":60,"time":0,"data":{"turn":1,"step":6,"content":[{"type":"tool-call","id":"pty-list","name":"terminal_list","arguments":"{}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[55,56,57,58,59],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":61,"time":0,"data":{"turn":1,"step":6,"callId":"pty-list","name":"terminal_list","arguments":"{}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":62,"time":0,"data":{"turn":1,"step":6,"callId":"pty-list","content":[{"type":"text","text":"(no terminal sessions)"}],"isError":false},"sourceEventSeqs":[61],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":63,"time":0,"data":{"turn":1,"step":6}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":64,"time":0,"data":{"turn":1,"step":7}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":65,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":66,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"text-delta","index":0,"text":"DONE"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":67,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":68,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":3}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":69,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":70,"time":0,"data":{"turn":1,"step":7,"content":[{"type":"text","text":"DONE"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":3}},"sourceEventSeqs":[65,66,67,68,69],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":71,"time":0,"data":{"turn":1,"step":7}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":72,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}
 {"type":"result","success":true,"sessionId":"{{sessionId}}","turn":1,"result":"DONE","reason":{"kind":"completed"},"usage":{"inputTokens":70,"outputTokens":33}}

examples/headless-agent/tests/snapshots/ralph-loop/input.json

@@ -0,0 +1,8 @@
+{
+  "steps": [
+    {
+      "op": "prompt",
+      "text": "Run a two-round fresh-agent Ralph loop to prove the shipped headless integration."
+    }
+  ]
+}

examples/headless-agent/tests/snapshots/ralph-loop/replay.override.json

@@ -0,0 +1,22 @@
+[
+  {
+    "kind": "chunks",
+    "chunks": [
+      { "type": "block-start", "index": 0, "blockType": "tool-call" },
+      { "type": "tool-call-delta", "index": 0, "id": "call_ralph", "name": "ralph", "argumentsDelta": "{\"objective\":\"Prove two fresh Ralph rounds through the shipped headless app.\",\"maxRounds\":2}" },
+      { "type": "block-end", "index": 0, "block": { "type": "tool-call", "id": "call_ralph", "name": "ralph", "arguments": "{\"objective\":\"Prove two fresh Ralph rounds through the shipped headless app.\",\"maxRounds\":2}" } },
+      { "type": "usage", "usage": { "inputTokens": 20, "outputTokens": 8 } },
+      { "type": "finish", "reason": { "kind": "tool-calls" } }
+    ]
+  },
+  {
+    "kind": "chunks",
+    "chunks": [
+      { "type": "block-start", "index": 0, "blockType": "text" },
+      { "type": "text-delta", "index": 0, "text": "RALPH SNAPSHOT COMPLETE" },
+      { "type": "block-end", "index": 0, "block": { "type": "text", "text": "RALPH SNAPSHOT COMPLETE" } },
+      { "type": "usage", "usage": { "inputTokens": 30, "outputTokens": 4 } },
+      { "type": "finish", "reason": { "kind": "stop" } }
+    ]
+  }
+]

examples/headless-agent/tests/snapshots/ralph-loop/session.1.jsonl

@@ -0,0 +1,6 @@
+{"type":"session","version":0,"id":"42222222-2222-4222-8222-222222222222","createdAt":1783951001000,"cwd":"/tmp/ralph-headless","parentSession":"41111111-1111-4111-8111-111111111111"}
+{"type":"assistant/chunk","seq":0,"time":1783951001001,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":1,"time":1783951001002,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"round-one-report","name":"structured_output","argumentsDelta":"{\"status\":\"continue\",\"summary\":\"ROUND_ONE_HANDOFF\",\"evidence\":[\"Round one inspected the workspace.\"],\"nextSteps\":[\"Finish the snapshot objective.\"],\"blocker\":\"\"}"}}}
+{"type":"assistant/chunk","seq":2,"time":1783951001003,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"round-one-report","name":"structured_output","arguments":"{\"status\":\"continue\",\"summary\":\"ROUND_ONE_HANDOFF\",\"evidence\":[\"Round one inspected the workspace.\"],\"nextSteps\":[\"Finish the snapshot objective.\"],\"blocker\":\"\"}"}}}}
+{"type":"assistant/chunk","seq":3,"time":1783951001004,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":30,"outputTokens":12}}}}
+{"type":"assistant/chunk","seq":4,"time":1783951001005,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}

examples/headless-agent/tests/snapshots/ralph-loop/session.2.jsonl

@@ -0,0 +1,6 @@
+{"type":"session","version":0,"id":"43333333-3333-4333-8333-333333333333","createdAt":1783951002000,"cwd":"/tmp/ralph-headless","parentSession":"41111111-1111-4111-8111-111111111111"}
+{"type":"assistant/chunk","seq":0,"time":1783951002001,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":1,"time":1783951002002,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"round-two-report","name":"structured_output","argumentsDelta":"{\"status\":\"complete\",\"summary\":\"The Ralph snapshot objective is complete.\",\"evidence\":[\"Two fresh rounds completed through the shipped app.\"],\"nextSteps\":[],\"blocker\":\"\"}"}}}
+{"type":"assistant/chunk","seq":2,"time":1783951002003,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"round-two-report","name":"structured_output","arguments":"{\"status\":\"complete\",\"summary\":\"The Ralph snapshot objective is complete.\",\"evidence\":[\"Two fresh rounds completed through the shipped app.\"],\"nextSteps\":[],\"blocker\":\"\"}"}}}}
+{"type":"assistant/chunk","seq":3,"time":1783951002004,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":40,"outputTokens":12}}}}
+{"type":"assistant/chunk","seq":4,"time":1783951002005,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}

examples/headless-agent/tests/snapshots/ralph-loop/session.jsonl

@@ -0,0 +1 @@
+{"type":"session","version":0,"id":"41111111-1111-4111-8111-111111111111","createdAt":1783951000000,"cwd":"/tmp/ralph-headless"}

examples/headless-agent/tests/snapshots/ralph-loop/stream-json.expected.jsonl

@@ -0,0 +1,24 @@
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Run a two-round fresh-agent Ralph loop to prove the shipped headless integration."}],"source":{"kind":"user"}},"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"Run a two-round fresh-agent Ralph","messageSeqs":[1],"source":{"kind":"fallback"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_ralph","name":"ralph","argumentsDelta":"{\"objective\":\"Prove two fresh Ralph rounds through the shipped headless app.\",\"maxRounds\":2}"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_ralph","name":"ralph","arguments":"{\"objective\":\"Prove two fresh Ralph rounds through the shipped headless app.\",\"maxRounds\":2}"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":20,"outputTokens":8}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"content":[{"type":"tool-call","id":"call_ralph","name":"ralph","arguments":"{\"objective\":\"Prove two fresh Ralph rounds through the shipped headless app.\",\"maxRounds\":2}"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":20,"outputTokens":8}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"call_ralph","name":"ralph","arguments":"{\"objective\":\"Prove two fresh Ralph rounds through the shipped headless app.\",\"maxRounds\":2}"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"callId":"call_ralph","content":[{"type":"text","text":"Ralph worker reported completion after 2 rounds.\nFinal report:\n{\n  \"status\": \"complete\",\n  \"summary\": \"The Ralph snapshot objective is complete.\",\n  \"evidence\": [\n    \"Two fresh rounds completed through the shipped app.\"\n  ],\n  \"nextSteps\": [],\n  \"blocker\": \"\"\n}"}],"isError":false},"sourceEventSeqs":[11],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":13,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":14,"time":0,"data":{"turn":1,"step":2}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":0,"text":"RALPH SNAPSHOT COMPLETE"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"RALPH SNAPSHOT COMPLETE"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":30,"outputTokens":4}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"content":[{"type":"text","text":"RALPH SNAPSHOT COMPLETE"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":30,"outputTokens":4}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":21,"time":0,"data":{"turn":1,"step":2}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":22,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}
+{"type":"result","success":true,"sessionId":"{{sessionId}}","turn":1,"result":"RALPH SNAPSHOT COMPLETE","reason":{"kind":"completed"},"usage":{"inputTokens":50,"outputTokens":12}}

examples/headless-agent/tests/todo-write.e2e.ts

@@ -0,0 +1,53 @@
+import { mkdtemp, rm } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import type { Context } from 'cordis'
+import { codingHarness, TODO_SYSTEM_PROMPT, waitForIdle } from './harness.ts'
+import { SessionId } from '@deepseek-ai/dsh-session'
+
+/**
+ * A REAL model drives the REAL todo_write tool: verify the WORLD (the session
+ * log gains a todo/write event whose snapshot the model actually produced), not
+ * the agent's self-report. Key-gated (see vitest.e2e.config.ts).
+ */
+
+let ctx: Context | undefined
+let workdir: string | undefined
+
+afterEach(async () => {
+  await ctx?.fiber.dispose()
+  ctx = undefined
+  if (workdir !== undefined) await rm(workdir, { recursive: true, force: true })
+  workdir = undefined
+})
+
+describe.skipIf(!process.env.DEEPSEEK_API_KEY)('todo_write: real model records a plan', () => {
+  it('appends a todo/write event with the model-produced task list', async () => {
+    workdir = await mkdtemp(join(tmpdir(), 'dsh-todo-write-e2e-'))
+    ctx = await codingHarness(workdir, { persona: TODO_SYSTEM_PROMPT })
+    const agent = ctx.agentLoop.create(SessionId('e2e-todo'), { provider: 'deepseek', model: 'deepseek-v4-flash' })
+
+    agent.send([{ type: 'text', text:
+      'Use the todo_write tool to record a plan of exactly two steps: first '
+      + '"inspect the failing test" (in_progress), then "apply the fix" (pending). '
+      + 'Send both in one todo_write call, then reply with the single word DONE.' }])
+    await waitForIdle(ctx, agent)
+
+    const events = [...agent.session.events]
+
+    // The model actually called the tool.
+    const calls = events.filter(event => event.type === 'tool/call')
+    expect(calls.some(event => event.data.name === 'todo_write')).toBe(true)
+
+    // And the tool wrote a todo/write event to the log — verify the WORLD.
+    const todoEvents = events.filter(event => event.type === 'todo/write')
+    expect(todoEvents.length).toBeGreaterThan(0)
+
+    const todos = (todoEvents.at(-1)!).data.todos
+    expect(todos).toEqual([
+      { content: 'inspect the failing test', status: 'in_progress' },
+      { content: 'apply the fix', status: 'pending' },
+    ])
+  }, 120_000)
+})