统一人工报价时间精度以保证原键精确重放

firstleg/src/main/java/com/baiyue/firstleg/service/FbaPricingService.java

@@ -229,9 +229,10 @@ public class FbaPricingService {
         if (current != null && !List.of("CALCULATED", "CONFIRMED", "SENT").contains(current.getFeeStatus())) {
             throw conflict("当前费用状态不允许重新定价");
         }
-        LocalDateTime now = LocalDateTime.now(clock);
+        // 与DATETIME(3)保存精度一致，首次响应和原键重放保留同一时间事实。
+        LocalDateTime now = LocalDateTime.now(clock).truncatedTo(java.time.temporal.ChronoUnit.MILLIS);
         PricingPolicy policy = pricingPolicy(inbound, now);
-        // 私人地址使用人工报价；FBA仍须先证明价格表未命中，避免绕开有效报价。
+        // 私人地址使用人工报价。FBA仍须先证明价格表未命中，避免绕开有效报价。
         if ("FBA".equals(inbound.getDestinationType())) {
             try {
                 priceBookEstimator.estimate(tenantId, new EstimateRequest(

firstleg/src/test/java/com/baiyue/firstleg/service/FbaPricingServiceTest.java

@@ -560,6 +560,34 @@ class FbaPricingServiceTest {
         org.mockito.Mockito.verifyNoInteractions(priceBookEstimator);
     }
 
+    @Test
+    void manualQuoteFreezesDatabaseMillisecondPrecisionForExactReplay() {
+        readyRepository();
+        InboundPricingEntity inbound = inbound("62.500", "0.3840");
+        inbound.setDestinationType("PRIVATE");
+        InboundMeasurementEntity measurement = new InboundMeasurementEntity();
+        measurement.setId(301L);
+        when(repository.findInbound(TENANT, INBOUND)).thenReturn(inbound);
+        when(measurementRepository.findLatestMeasurement(TENANT, INBOUND)).thenReturn(measurement);
+        when(measurementRepository.listItems(TENANT, 301L)).thenReturn(List.of(new InboundMeasurementItemEntity()));
+        when(repository.completeIdempotency(any(), eq(501L), any())).thenReturn(1);
+        Clock original = (Clock) org.springframework.test.util.ReflectionTestUtils.getField(service, "clock");
+        var preciseClock = Clock.fixed(Instant.parse("2026-08-03T02:00:00.123456789Z"), ZoneId.of("Asia/Shanghai"));
+        org.springframework.test.util.ReflectionTestUtils.setField(service, "clock", preciseClock);
+        try {
+            var result = service.manualQuote(TENANT, OPERATOR, INBOUND,
+                new ManualQuoteRequest(new BigDecimal("62.500"), new BigDecimal("0.3840"),
+                    BigDecimal.ONE, "私人地址测试人工报价"), "private-precision");
+            assertThat(result.calculatedAt().getNano()).isEqualTo(123000000);
+            ArgumentCaptor<InboundFeeEntity> fee = ArgumentCaptor.forClass(InboundFeeEntity.class);
+            verify(repository).insertFee(fee.capture());
+            assertThat(fee.getValue().getCreatedAt()).isEqualTo(result.calculatedAt());
+            assertThat(fee.getValue().getUpdatedAt()).isEqualTo(result.calculatedAt());
+        } finally {
+            org.springframework.test.util.ReflectionTestUtils.setField(service, "clock", original);
+        }
+    }
+
     @Test
     @DisplayName("已有匹配价格时拒绝绕过价格表创建人工报价")
     void rejectsManualQuoteWhenRateExists() {