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fix(acp): drain continuable subagents before disposing top-level agents

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A continuable Activation outlives the turn that started it and owns descendant
teardown, so the bridge must drain that forest child-first before releasing the
top-level agents whose runtime the descendants depend on.

Also rewrites the authored continuable snapshot transcript for the Task-free
tool surface; the scenario's keyless replay is still under diagnosis.
This commit is contained in:
Dudu-0223
2026-07-30 14:41:21 +08:00
committed by Tianyi Cui
parent 3911b7117e
commit c8fbc111db
4 changed files with 154 additions and 85 deletions
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45
examples/acp-agent/tests/fixtures/subagent-durability-failure.ts vendored
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@@ -1,41 +1,72 @@
import type { Context } from 'cordis'
import { appendFileSync } from 'node:fs'
export const name = 'subagent-durability-failure'
export const inject = ['sessionPersistence']
export const inject = ['sessionPersistence', 'subagents']
const UNKNOWN_CHILD_ID = '22222222-2222-4222-8222-222222222222'
/** Fail the child checkpoint and stabilize the authored follow-up failure ordering. */
export function apply(ctx: Context): void {
const log = (...a: unknown[]): void => {
try { appendFileSync('/tmp/probe.log', '[PROBE] ' + a.map(String).join(' ') + '\n') } catch { /* ignore */ }
}
const followupsAccepted = Promise.withResolvers<undefined>()
const persistence = ctx.sessionPersistence
const load = persistence.load.bind(persistence)
// The unavailable-child lookup is real asynchronous I/O. Fence it behind both
// authored follow-ups so runner speed cannot reorder the exact log.
persistence.load = async (id) => {
if (id === UNKNOWN_CHILD_ID) await followupsAccepted.promise
log('load', id)
if (id === UNKNOWN_CHILD_ID) { log('gating unknown-id load'); await followupsAccepted.promise; log('unknown-id load released') }
return load.call(persistence, id)
}
// Patch followup to log routing.
const subagents = ctx.subagents as unknown as { followup: (...a: unknown[]) => Promise<unknown> }
const origFollowup = subagents.followup.bind(subagents)
subagents.followup = async (...args: unknown[]) => {
log('followup childId=', args[1])
return origFollowup(...args)
}
ctx.effect(() => () => {
persistence.load = load
followupsAccepted.resolve(undefined)
}, 'subagent snapshot ordering')
// Both authored follow-ups reach the child inbox before the unknown-id lookup
// runs, so the queued FIFO order is what the transcript records.
let accepted = 0
ctx.on('agent/inbox/enqueue', (agent) => {
if (agent.session.header.parentSession === undefined) return
accepted += 1
log('child enqueue #', accepted, 'child=', agent.session.header.id)
if (accepted >= 3) followupsAccepted.resolve(undefined)
})
ctx.on('subagent/start', (info: unknown) => {
log('subagent/start id=', (info as { id?: unknown }).id)
})
ctx.on('session/event', (session, event) => {
if (session.header.parentSession === undefined) return
if (event.type === 'turn/start') log('child turn/start turn=', event.data.turn, 'child=', session.header.id)
if (event.type === 'user/message') {
const c = event.data.content?.[0]
log('child user/message text=', c && c.type === 'text' ? c.text : '?', 'child=', session.header.id)
}
})
const flushes = new WeakMap<object, number>()
const flushedTurnEnds = new WeakSet<object>()
ctx.on('session/flush', (session) => {
if (session.header.parentSession === undefined) return
const count = (flushes.get(session) ?? 0) + 1
flushes.set(session, count)
log('child flush #', count, 'child=', session.header.id)
if (session.events.at(-1)?.type !== 'turn/end') return
if (flushedTurnEnds.has(session)) throw new Error('snapshot disk full')
if (flushedTurnEnds.has(session)) {
log('THROW snapshot disk full')
throw new Error('snapshot disk full')
}
flushedTurnEnds.add(session)
})
}

57
examples/acp-agent/tests/snapshots/subagent-continuable/session.1.jsonl
View File

@@ -1,17 +1,40 @@
{"type":"session","version":0,"id":"33333333-3333-4333-8333-333333333333","createdAt":1789000001000,"cwd":"{{cwd}}","parentSession":"11111111-1111-4111-8111-111111111111","delegationDepth":1}
{"type":"subagent/descriptor","seq":0,"time":1784795691405,"data":{"version":1,"provider":"spawn","agentProvider":"deepseek-official","agentModel":"deepseek-v4-flash"}}
{"type":"turn/start","seq":1,"time":1789000000000,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
{"type":"user/message","seq":2,"time":1789000000001,"data":{"content":[{"type":"text","text":"Reply with exactly the word CHILD_OK and nothing else."}],"source":{"kind":"user"},"role":"user","id":"5eabc0cb-6297-4988-92d9-554fb1cfdab7"},"surfaceOp":"append"}
{"type":"session/title","seq":3,"time":1789000000001,"data":{"title":"Reply with exactly the word","messageSeqs":[2],"source":{"kind":"fallback"}}}
{"type":"user/message","seq":4,"time":1785517567401,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"57bfffb1-f18b-4e29-aaca-26ecaea51574"},"surfaceOp":"append"}
{"type":"step/start","seq":5,"time":1785517567401,"data":{"turn":1,"step":1}}
{"type":"request/header","seq":6,"time":1785517567401,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
{"type":"request/context","seq":7,"time":1785517567401,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
{"type":"assistant/chunk","seq":8,"time":1789000000007,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
{"type":"assistant/chunk","seq":9,"time":1789000000008,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"CHILD_OK"}}}
{"type":"assistant/chunk","seq":10,"time":1784795691405,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"CHILD_OK"}}}}
{"type":"assistant/chunk","seq":11,"time":1785517567410,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":3}}}}
{"type":"assistant/chunk","seq":12,"time":1785517567410,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
{"type":"assistant/message","seq":13,"time":1785517567410,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"CHILD_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"156cd267-c1e6-4030-b317-dc2936120f4a"},"usage":{"inputTokens":10,"outputTokens":3}},"sourceEventSeqs":[8,9,10,11,12],"surfaceOp":"append"}
{"type":"step/end","seq":14,"time":1785517567410,"data":{"turn":1,"step":1}}
{"type":"turn/end","seq":15,"time":1785517567411,"data":{"turn":1,"reason":{"kind":"completed"}}}
{"type":"session","version":0,"id":"33333333-3333-4333-8333-333333333333","createdAt":1789000001000,"cwd":"/tmp/subagent-continuable","parentSession":"11111111-1111-4111-8111-111111111111","delegationDepth":1}
{"type":"turn/start","seq":0,"time":1789000000001,"data":{"turn":1,"trigger":{"kind":"subagent-descriptor"}}}
{"type":"subagent/descriptor","seq":1,"time":1789000000002,"data":{"version":1,"provider":"spawn","agentProvider":"deepseek","agentModel":"deepseek-v4-flash"}}
{"type":"turn/end","seq":2,"time":1789000000003,"data":{"turn":1,"reason":{"kind":"completed"}}}
{"type":"turn/start","data":{"turn":2,"trigger":{"kind":"message","source":{"kind":"user"}}},"seq":3,"time":1789000000004}
{"type":"user/message","data":{"content":[{"type":"text","text":"Reply with exactly the word CHILD_OK and nothing else."}],"source":{"kind":"user"}},"surfaceOp":"append","seq":4,"time":1789000000005}
{"type":"step/start","data":{"turn":2,"step":1},"seq":5,"time":1789000000006}
{"type":"request/header","data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"},"seq":6,"time":1789000000007}
{"type":"assistant/chunk","data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}},"seq":7,"time":1789000000008}
{"type":"assistant/chunk","data":{"turn":2,"step":1,"chunk":{"type":"text-delta","index":0,"text":"CHILD_OK"}},"seq":8,"time":1789000000009}
{"type":"assistant/chunk","data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"CHILD_OK"}}},"seq":9,"time":1789000000010}
{"type":"assistant/chunk","data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}},"seq":10,"time":1789000000011}
{"type":"assistant/chunk","data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}},"seq":11,"time":1789000000012}
{"type":"assistant/message","data":{"turn":2,"step":1,"content":[{"type":"text","text":"CHILD_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"seq":12,"time":1789000000013}
{"type":"step/end","data":{"turn":2,"step":1},"seq":13,"time":1789000000014}
{"type":"turn/end","data":{"turn":2,"reason":{"kind":"completed"}},"seq":14,"time":1789000000015}
{"type":"turn/start","data":{"turn":3,"trigger":{"kind":"message","source":{"kind":"coordinator","senderSessionId":"11111111-1111-4111-8111-111111111111"}}},"seq":15,"time":1789000000016}
{"type":"user/message","data":{"content":[{"type":"text","text":"Now reply with exactly SECOND_OK."}],"source":{"kind":"coordinator","senderSessionId":"11111111-1111-4111-8111-111111111111"}},"surfaceOp":"append","seq":16,"time":1789000000017}
{"type":"step/start","data":{"turn":3,"step":1},"seq":17,"time":1789000000018}
{"type":"request/header","data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"},"seq":18,"time":1789000000019}
{"type":"assistant/chunk","data":{"turn":3,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}},"seq":19,"time":1789000000020}
{"type":"assistant/chunk","data":{"turn":3,"step":1,"chunk":{"type":"text-delta","index":0,"text":"SECOND_OK"}},"seq":20,"time":1789000000021}
{"type":"assistant/chunk","data":{"turn":3,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"SECOND_OK"}}},"seq":21,"time":1789000000022}
{"type":"assistant/chunk","data":{"turn":3,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}},"seq":22,"time":1789000000023}
{"type":"assistant/chunk","data":{"turn":3,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}},"seq":23,"time":1789000000024}
{"type":"assistant/message","data":{"turn":3,"step":1,"content":[{"type":"text","text":"SECOND_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"seq":24,"time":1789000000025}
{"type":"step/end","data":{"turn":3,"step":1},"seq":25,"time":1789000000026}
{"type":"turn/end","data":{"turn":3,"reason":{"kind":"completed"}},"seq":26,"time":1789000000027}
{"type":"turn/start","data":{"turn":4,"trigger":{"kind":"message","source":{"kind":"coordinator","senderSessionId":"11111111-1111-4111-8111-111111111111"}}},"seq":27,"time":1789000000028}
{"type":"user/message","data":{"content":[{"type":"text","text":"Now reply with exactly THIRD_OK."}],"source":{"kind":"coordinator","senderSessionId":"11111111-1111-4111-8111-111111111111"}},"surfaceOp":"append","seq":28,"time":1789000000029}
{"type":"step/start","data":{"turn":4,"step":1},"seq":29,"time":1789000000030}
{"type":"request/header","data":{"header":{"config":{"provider":"deepseek","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"},"seq":30,"time":1789000000031}
{"type":"assistant/chunk","data":{"turn":4,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}},"seq":31,"time":1789000000032}
{"type":"assistant/chunk","data":{"turn":4,"step":1,"chunk":{"type":"text-delta","index":0,"text":"THIRD_OK"}},"seq":32,"time":1789000000033}
{"type":"assistant/chunk","data":{"turn":4,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"THIRD_OK"}}},"seq":33,"time":1789000000034}
{"type":"assistant/chunk","data":{"turn":4,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}},"seq":34,"time":1789000000035}
{"type":"assistant/chunk","data":{"turn":4,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}},"seq":35,"time":1789000000036}
{"type":"assistant/message","data":{"turn":4,"step":1,"content":[{"type":"text","text":"THIRD_OK"}],"provenance":{"provider":"deepseek","model":"deepseek-v4-flash"},"usage":{"inputTokens":10,"outputTokens":5}},"seq":36,"time":1789000000037}
{"type":"step/end","data":{"turn":4,"step":1},"seq":37,"time":1789000000038}
{"type":"turn/end","data":{"turn":4,"reason":{"kind":"error","step":1,"message":"snapshot disk full"}},"seq":38,"time":1789000000039}

115
examples/acp-agent/tests/snapshots/subagent-continuable/session.jsonl
View File

@@ -1,57 +1,58 @@
{"type":"session","version":0,"id":"11111111-1111-4111-8111-111111111111","createdAt":1789000000000,"cwd":"{{cwd}}","delegationDepth":0}
{"type":"turn/start","seq":0,"time":1789000000000,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
{"type":"user/message","seq":1,"time":1789000000001,"data":{"content":[{"type":"text","text":"Follow these steps exactly, then stop. 1. Call the subagent tool once with run_in_background set to true, description 'Reply with CHILD_OK', and prompt 'Reply with exactly the word CHILD_OK and nothing else.'. 2. Collect its result with task_output using the task id from the acknowledgement and wait: true. 3. Call send_message with subagent_id exactly '22222222-2222-4222-8222-222222222222' (a subagent that does not exist) and message 'Please continue.'. 4. Collect the task it started with task_output and wait: true, and observe that it failed. 5. Reply with the single word DONE. Do not use the bash tool."}],"source":{"kind":"user"},"role":"user","id":"42a76bb1-818e-427e-8037-76b33c3a5c1f"},"surfaceOp":"append"}
{"type":"session/title","seq":2,"time":1789000000001,"data":{"title":"Follow these steps exactly, then","messageSeqs":[1],"source":{"kind":"fallback"}}}
{"type":"user/message","seq":3,"time":1785517567360,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"6dee8203-be1c-4287-86f3-db1ea0197c19"},"surfaceOp":"append"}
{"type":"step/start","seq":4,"time":1785517567360,"data":{"turn":1,"step":1}}
{"type":"request/header","seq":5,"time":1785517567361,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
{"type":"request/context","seq":6,"time":1785517567361,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
{"type":"assistant/chunk","seq":7,"time":1789000000006,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
{"type":"assistant/chunk","seq":8,"time":1789000000007,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_bg_start","name":"subagent","argumentsDelta":"{\"description\": \"Reply with CHILD_OK\", \"prompt\": \"Reply with exactly the word CHILD_OK and nothing else.\", \"run_in_background\": true}"}}}
{"type":"assistant/chunk","seq":9,"time":1789000000008,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_bg_start","name":"subagent","arguments":"{\"description\": \"Reply with CHILD_OK\", \"prompt\": \"Reply with exactly the word CHILD_OK and nothing else.\", \"run_in_background\": true}"}}}}
{"type":"assistant/chunk","seq":10,"time":1785517567370,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
{"type":"assistant/chunk","seq":11,"time":1785517567370,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
{"type":"assistant/message","seq":12,"time":1785517567370,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_bg_start","name":"subagent","arguments":"{\"description\": \"Reply with CHILD_OK\", \"prompt\": \"Reply with exactly the word CHILD_OK and nothing else.\", \"run_in_background\": true}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"631fd641-46e9-4e62-965a-2fd7a87e2720"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[7,8,9,10,11],"surfaceOp":"append"}
{"type":"tool/call","seq":13,"time":1785517567370,"data":{"turn":1,"step":1,"callId":"call_bg_start","name":"subagent","arguments":"{\"description\": \"Reply with CHILD_OK\", \"prompt\": \"Reply with exactly the word CHILD_OK and nothing else.\", \"run_in_background\": true}"}}
{"type":"tool/result","seq":14,"time":1785517567380,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_bg_start"},"content":[{"type":"tool-result","toolCallId":"call_bg_start","content":[{"type":"text","text":"started subagent 33333333-3333-4333-8333-333333333333 as task subagent-1"}],"isError":false}],"role":"user","id":"28d3f6cb-8934-4dcc-9cf2-7db87b0df06a"}},"sourceEventSeqs":[13],"surfaceOp":"append"}
{"type":"step/end","seq":15,"time":1785517567380,"data":{"turn":1,"step":1}}
{"type":"step/start","seq":16,"time":1785517567387,"data":{"turn":1,"step":2}}
{"type":"assistant/chunk","seq":17,"time":1789000000016,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
{"type":"assistant/chunk","seq":18,"time":1789000000017,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"call_collect_1","name":"task_output","argumentsDelta":"{\"task_id\": \"subagent-1\", \"wait\": true}"}}}
{"type":"assistant/chunk","seq":19,"time":1789000000018,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_collect_1","name":"task_output","arguments":"{\"task_id\": \"subagent-1\", \"wait\": true}"}}}}
{"type":"assistant/chunk","seq":20,"time":1785517567391,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
{"type":"assistant/chunk","seq":21,"time":1785517567391,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
{"type":"assistant/message","seq":22,"time":1785517567392,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_collect_1","name":"task_output","arguments":"{\"task_id\": \"subagent-1\", \"wait\": true}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"3fcea712-0e14-4f2d-909c-f7de70018053"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[17,18,19,20,21],"surfaceOp":"append"}
{"type":"tool/call","seq":23,"time":1785517567392,"data":{"turn":1,"step":2,"callId":"call_collect_1","name":"task_output","arguments":"{\"task_id\": \"subagent-1\", \"wait\": true}"}}
{"type":"tool/result","seq":24,"time":1785517567419,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_collect_1"},"content":[{"type":"tool-result","toolCallId":"call_collect_1","content":[{"type":"text","text":"(no new output)\n[status: failed, subagent \"33333333-3333-4333-8333-333333333333\" durability checkpoint failed; the latest child state was not confirmed persisted and may be unavailable or stale on resume: snapshot disk full]"}],"isError":false}],"role":"user","id":"ae79571a-fa78-4de0-9614-a10b5223230c"}},"sourceEventSeqs":[23],"surfaceOp":"append"}
{"type":"step/end","seq":25,"time":1785517567419,"data":{"turn":1,"step":2}}
{"type":"step/start","seq":26,"time":1785517567425,"data":{"turn":1,"step":3}}
{"type":"assistant/chunk","seq":27,"time":1789000000026,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
{"type":"assistant/chunk","seq":28,"time":1789000000027,"data":{"turn":1,"step":3,"chunk":{"type":"tool-call-delta","index":0,"id":"call_follow_up","name":"send_message","argumentsDelta":"{\"subagent_id\": \"22222222-2222-4222-8222-222222222222\", \"message\": \"Please continue.\"}"}}}
{"type":"assistant/chunk","seq":29,"time":1789000000028,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_follow_up","name":"send_message","arguments":"{\"subagent_id\": \"22222222-2222-4222-8222-222222222222\", \"message\": \"Please continue.\"}"}}}}
{"type":"assistant/chunk","seq":30,"time":1785517567430,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
{"type":"assistant/chunk","seq":31,"time":1785517567430,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
{"type":"assistant/message","seq":32,"time":1785517567430,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_follow_up","name":"send_message","arguments":"{\"subagent_id\": \"22222222-2222-4222-8222-222222222222\", \"message\": \"Please continue.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5e78130e-5ae7-4ec9-ad34-9e2400a23ef0"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[27,28,29,30,31],"surfaceOp":"append"}
{"type":"tool/call","seq":33,"time":1785517567431,"data":{"turn":1,"step":3,"callId":"call_follow_up","name":"send_message","arguments":"{\"subagent_id\": \"22222222-2222-4222-8222-222222222222\", \"message\": \"Please continue.\"}"}}
{"type":"tool/result","seq":34,"time":1785517567438,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"call_follow_up"},"content":[{"type":"tool-result","toolCallId":"call_follow_up","content":[{"type":"text","text":"message started task subagent-2 continuing subagent 22222222-2222-4222-8222-222222222222"}],"isError":false}],"role":"user","id":"6a7a5d22-1172-4a10-9230-ec12aed58e5e"}},"sourceEventSeqs":[33],"surfaceOp":"append"}
{"type":"step/end","seq":35,"time":1785517567438,"data":{"turn":1,"step":3}}
{"type":"user/message","seq":36,"time":1785517567444,"data":{"content":[{"type":"text","text":"background task subagent-2 (subagent: Please continue.) finished [status: failed, SubagentError: subagent \"22222222-2222-4222-8222-222222222222\" is unavailable]. Read its output with task_output."}],"source":{"kind":"plugin","plugin":"tool-tasks"},"role":"user","id":"32644e35-5ea1-4d29-8ef6-e09eb813781c"},"surfaceOp":"append"}
{"type":"step/start","seq":37,"time":1785517567444,"data":{"turn":1,"step":4}}
{"type":"assistant/chunk","seq":38,"time":1789000000037,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
{"type":"assistant/chunk","seq":39,"time":1789000000038,"data":{"turn":1,"step":4,"chunk":{"type":"tool-call-delta","index":0,"id":"call_collect_2","name":"task_output","argumentsDelta":"{\"task_id\": \"subagent-2\", \"wait\": true}"}}}
{"type":"assistant/chunk","seq":40,"time":1785517567453,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_collect_2","name":"task_output","arguments":"{\"task_id\": \"subagent-2\", \"wait\": true}"}}}}
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