}));

vi.doMock("./history.js", () => ({

getDmHistoryLimitFromSessionKey: vi.fn(() => undefined),

getHistoryLimitFromSessionKey: vi.fn(() => undefined),

limitHistoryTurns: vi.fn((msgs: unknown[]) => msgs.slice(0, 2)),

}));

import { applyFinalEffectiveToolPolicy } from "./effective-tool-policy.js";

import { buildEmbeddedExtensionFactories } from "./extensions.js";

import { applyExtraParamsToAgent } from "./extra-params.js";

import { getDmHistoryLimitFromSessionKey, limitHistoryTurns } from "./history.js";

import { getHistoryLimitFromSessionKey, limitHistoryTurns } from "./history.js";

import { log } from "./logger.js";

import { hardenManualCompactionBoundary } from "./manual-compaction-boundary.js";

import { buildEmbeddedMessageActionDiscoveryInput } from "./message-action-discovery-input.js";

const originalMessages = session.messages.slice();

const truncated = limitHistoryTurns(

session.messages,

getDmHistoryLimitFromSessionKey(params.sessionKey, params.config),

getHistoryLimitFromSessionKey(params.sessionKey, params.config),

);

// Re-run tool_use/tool_result pairing repair after truncation, since

// limitHistoryTurns can orphan tool_result blocks by removing the