fix(housekeeping): preserve audit failure evidence

src/features/housekeeping/foundation/commands/audit-envelope.test.ts

@@ -96,4 +96,37 @@ describe("audit command envelope", () => {
 			undefined,
 		);
 	});
+	it("preserves the original operation error when failure evidence rejects", async () => {
+		const original = new Error("operation failed");
+		const auditFailure = new Error("audit failure");
+		const writer: HousekeepingAuditWriter = {
+			write: vi
+				.fn()
+				.mockResolvedValueOnce(undefined)
+				.mockRejectedValueOnce(auditFailure),
+		};
+		await expect(
+			runWithAuditIntent(writer, auditEntry, () => Promise.reject(original)),
+		).rejects.toBe(original);
+		expect(
+			(original as Error & { auditOutcomeError?: unknown }).auditOutcomeError,
+		).toBe(auditFailure);
+	});
+
+	it("throws a completed-operation error when success evidence rejects", async () => {
+		const auditFailure = new Error("audit failure");
+		const writer: HousekeepingAuditWriter = {
+			write: vi
+				.fn()
+				.mockResolvedValueOnce(undefined)
+				.mockRejectedValueOnce(auditFailure),
+		};
+		await expect(
+			runWithAuditIntent(writer, auditEntry, () => Promise.resolve("done")),
+		).rejects.toMatchObject({
+			operationCompleted: true,
+			operationResult: "done",
+			auditOutcomeError: auditFailure,
+		});
+	});
 });