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refactor(core): simplify scoped agent lifecycles

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This commit is contained in:
Tianyi Cui
2026-07-12 22:36:04 +08:00
parent e8fed4fb66
commit 28e04ff4fb
24 changed files with 1080 additions and 4097 deletions
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19
packages/core/agent-loop/src/loop.ts
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@@ -11,7 +11,7 @@ import type { Context } from 'cordis'
import type { FinishReason, GenerateOptions, LlmCallConfig, Message } from '@deepseek-ai/dsh-llm'
import { BlockAssembler, HarnessError, deepFreeze } from '@deepseek-ai/dsh-llm'
import { agentEvents, assembleContextFor } from '@deepseek-ai/dsh-agent'
import type { AgentEventDispatch, ContinuationDecision, ContinuationStop, HookContext, PromptDecision } from '@deepseek-ai/dsh-agent'
import type { AgentEventDispatch, ContinuationDecision, HookContext, PromptDecision } from '@deepseek-ai/dsh-agent'
import { canonicalHeader } from '@deepseek-ai/dsh-session'
import type { Session, TurnEndReason, TurnTrigger } from '@deepseek-ai/dsh-session'
import { createTransmissionLog, recordRequestHeader } from './request-log.ts'
@@ -36,20 +36,6 @@ function toError(error: unknown): CodedError {
return error instanceof Error ? error : new HarnessError(String(error), 'UNKNOWN', { cause: error })
}
/**
* Validate the runtime result of the terminal-stop serial event. Event types
* protect TypeScript listeners, but JavaScript and casts can still return an
* arbitrary bail value; accepting one as an implicit stop would hide a broken
* policy plugin.
*/
function assertContinuationStop(value: unknown): asserts value is ContinuationStop | undefined {
if (value === undefined) return
const candidate = Object(value) as { action?: unknown }
if (candidate.action !== 'stop') {
throw new Error('agent/turn-stop returned an invalid result; expected { action: \'stop\' } or undefined')
}
}
/**
* Map a model-call {@link FinishReason} to the step error it should raise, or
* `undefined` when the step completed normally.
@@ -644,8 +630,7 @@ async function runTurn(
// no later listener or steering override can resurrect the turn.
let terminalStop = false
try {
const stop = await events.strictSerial('agent/turn-stop', turn)
assertContinuationStop(stop)
const stop = await events.serial('agent/turn-stop', turn)
terminalStop = stop !== undefined
} catch (error: unknown) {
// A broken terminal policy is an ordinary continuation failure: fail