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fix(core): remove per-prompt system option (#34361)

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Kit Langton 2026-06-28 21:56:59 -04:00 • committed by GitHub
commit 7073e8797f
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9 changed files with 3 additions and 80 deletions
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1
packages/core/src/session.ts
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@ -509,7 +509,6 @@ const resolvePrompt = (input: PromptInput.Prompt) =>
Prompt.make({
text: input.text,
agents: input.agents,
system: input.system,
files: input.files?.map((file) => {
const dataMime = file.uri.match(/^data:([^;,]+)[;,]/i)?.[1]
const target = URL.canParse(file.uri) ? new URL(file.uri).pathname : (file.name ?? file.uri)

1
packages/core/src/session/message-updater.ts
View file

@ -133,7 +133,6 @@ export function update(adapter: Adapter, event: SessionEvent.Event) {
text: event.data.prompt.text,
files: event.data.prompt.files,
agents: event.data.prompt.agents,
system: event.data.prompt.system,
time: { created: event.data.timestamp },
}),
)

5
packages/core/src/session/runner/llm.ts
View file

@ -193,16 +193,13 @@ export const layer = Layer.effect(
const model = yield* models.resolve(session)
const entries = yield* SessionHistory.entriesForRunner(db, session.id, system.baselineSeq)
const context = entries.map((entry) => entry.message)
// Mirror V1 (session/llm/request.ts): append the current turn's per-request system string after the
// agent prompt and durable baseline. The current turn's user prompt is the latest user message in context.
const turnSystem = context.findLast((message) => message.type === "user")?.system
const isLastStep = agent.info?.steps !== undefined && currentStep >= agent.info.steps
const toolMaterialization = isLastStep ? undefined : yield* tools.materialize(agent.info?.permissions)
const promptCacheKey = /^ses_[0-9a-f]{64}$/.test(session.id) ? session.id.slice(4) : session.id
const request = LLM.request({
model,
providerOptions: { openai: { promptCacheKey } },
system: [agent.info?.system ? agent.info.system : SessionRunnerSystemPrompt.provider(model), system.baseline, turnSystem]
system: [agent.info?.system ? agent.info.system : SessionRunnerSystemPrompt.provider(model), system.baseline]
.filter((part): part is string => part !== undefined && part.length > 0)
.map(SystemPart.make),
messages: [...toLLMMessages(context, model), ...(isLastStep ? [Message.assistant(MAX_STEPS_PROMPT)] : [])],