fix(coding-agent): 识别顶层工具错误标记

packages/coding-agent/src/eval/js/tool-bridge.ts

@@ -20,6 +20,9 @@ type ToolValue =
 			hasError?: boolean;
 	  };
 function toolResultHasError(result: AgentToolResult): boolean {
+	if ((result as { isError?: unknown }).isError === true) {
+		return true;
+	}
 	if (!(result.details && typeof result.details === "object")) {
 		return false;
 	}

packages/coding-agent/test/core/js-tool-bridge.test.ts

@@ -109,6 +109,36 @@ describe("callSessionTool", () => {
 		]);
 	});
 
+	it("marks results with top-level isError", async () => {
+		const session = createSession([
+			createTool(
+				"custom",
+				async () =>
+					({
+						content: [{ type: "text", text: "preview mismatch" }],
+						isError: true,
+					}) as AgentToolResult,
+			),
+		]);
+		const statuses: Array<Record<string, unknown>> = [];
+
+		const result = await callSessionTool("custom", {}, { session, emitStatus: event => statuses.push(event) });
+
+		expect(result).toEqual({
+			text: "preview mismatch",
+			details: undefined,
+			hasError: true,
+		});
+		expect(statuses).toEqual([
+			expect.objectContaining({
+				op: "custom",
+				chars: 16,
+				hasError: true,
+				error: "preview mismatch",
+			}),
+		]);
+	});
+
 	it("throws when the requested tool is not available in the session registry", async () => {
 		const session = createSession([]);