});

it("preserves signed thinking turns while repairing legacy tool-result pairing for anthropic", async () => {

setNonGoogleModelApi();

const sessionManager = makeMockSessionManager();

const nativeAnthropicPolicy: TranscriptPolicy = {

sanitizeMode: "full",

sanitizeToolCallIds: true,

toolCallIdMode: "strict",

preserveNativeAnthropicToolUseIds: true,

repairToolUseResultPairing: true,

preserveSignatures: true,

sanitizeThinkingSignatures: false,

dropThinkingBlocks: false,

dropReasoningFromHistory: false,

applyGoogleTurnOrdering: false,

validateGeminiTurns: false,

validateAnthropicTurns: true,

allowSyntheticToolResults: true,

};

const messages: AgentMessage[] = [

makeUserMessage("Use the gateway"),

makeAssistantMessage(

modelId: "claude-sonnet-4-6",

sessionManager,

sessionId: TEST_SESSION_ID,

policy: nativeAnthropicPolicy,

});

const validated = await validateReplayTurns({

messages: sanitized,

modelApi: "anthropic-messages",

provider: "anthropic",

modelId: "claude-opus-4-6",

sessionId: TEST_SESSION_ID,

policy: nativeAnthropicPolicy,

});

expect(sanitized.map((msg) => msg.role)).toEqual(["user", "assistant", "toolResult", "user"]);