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feat(core): replace instruction checkpoints with value-delta sync (#36254)

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Kit Langton 2026-07-10 13:26:25 -04:00 • committed by GitHub
commit 96a9731947
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57 changed files with 2053 additions and 1278 deletions
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21
packages/core/src/session/runner/llm.ts
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@ -29,7 +29,7 @@ import { InstructionEntry } from "../instruction-entry"
import { QuestionTool } from "../../tool/question"
import { ToolRegistry } from "../../tool/registry"
import { ToolOutputStore } from "../../tool-output-store"
import { InstructionCheckpoint } from "../instruction-checkpoint"
import { InstructionState } from "../instruction-state"
import { SessionCompaction } from "../compaction"
import { SessionEvent } from "../event"
import { SessionHistory } from "../history"
@ -112,6 +112,8 @@ const layer = Layer.effect(
if (!session) return yield* Effect.die(new Error(`Session not found: ${sessionID}`))
return session
})
const isCurrentLocation = (session: SessionSchema.Info) =>
session.location.directory === location.directory && session.location.workspaceID === location.workspaceID
const failInterruptedTools = Effect.fn("SessionRunner.failInterruptedTools")(function* (
sessionID: SessionSchema.ID,
@ -160,20 +162,15 @@ const layer = Layer.effect(
assistantMessageID?: SessionMessage.ID,
) {
const session = yield* getSession(sessionID)
if (session.location.directory !== location.directory || session.location.workspaceID !== location.workspaceID)
return yield* Effect.interrupt
if (!isCurrentLocation(session)) return yield* Effect.interrupt
yield* plugins.flush
const agent = yield* agents.select(session.agent)
const agentInfo = agent.info
if (!agentInfo) return yield* new AgentNotFoundError({ sessionID: session.id, agent: session.agent ?? agent.id })
// Establish what the model knows before admitting what the user said, so
// a blocked first step leaves pending inputs untouched.
const checkpoint = yield* InstructionCheckpoint.prepare(
db,
events,
loadInstructions(agent, session.id),
session.id,
)
const instructions = yield* loadInstructions(agent, session.id)
yield* InstructionState.prepare(db, events, instructions, session.id)
let currentStep = step
if (promotion) {
let promoted = 0
@ -187,8 +184,8 @@ const layer = Layer.effect(
const resolved = yield* models.resolve(session)
const model = resolved.model
const providerMetadataKey = model.route.providerMetadataKey ?? model.provider
const entries = yield* SessionHistory.entriesForRunner(db, session.id, checkpoint.baselineSeq)
const context = entries.map((entry) => entry.message)
const history = yield* SessionHistory.entriesForRunner(db, session.id, instructions)
const context = history.entries.map((entry) => entry.message)
const compactionInput = { sessionID: session.id, messages: context, model }
if (compaction.required(compactionInput) && !(yield* SessionPending.compaction(db, session.id))) {
const compacted = yield* compaction.compact(compactionInput)
@ -201,7 +198,7 @@ const layer = Layer.effect(
const request = LLM.request({
model,
providerOptions: { openai: { promptCacheKey } },
system: [agentInfo.system ? agentInfo.system : SessionRunnerSystemPrompt.provider(model), checkpoint.baseline]
system: [agentInfo.system ? agentInfo.system : SessionRunnerSystemPrompt.provider(model), history.initial]
.filter((part): part is string => part !== undefined && part.length > 0)
.map(SystemPart.make),
messages: [