diff --git a/deploy/sql/头程数据库统一增量-MySQL8.sql b/deploy/sql/头程数据库统一增量-MySQL8.sql
index 07b97973b..47161a1ca 100644
--- a/deploy/sql/头程数据库统一增量-MySQL8.sql
+++ b/deploy/sql/头程数据库统一增量-MySQL8.sql
@@ -18131,8 +18131,7 @@ CREATE TABLE IF NOT EXISTS fl_terminal_drayage (
   KEY idx_terminal_drayage_warning(actual_empty_return_at,estimated_empty_return_at),
   CONSTRAINT fk_terminal_drayage_container FOREIGN KEY(container_booking_id) REFERENCES fl_container_booking(id),
   CONSTRAINT chk_terminal_drayage_times CHECK((actual_pickup_at IS NULL OR pickup_appointment_at IS NOT NULL)
-    AND (actual_empty_return_at IS NULL OR actual_pickup_at IS NOT NULL)
-    AND (actual_empty_return_at IS NULL OR actual_empty_return_at >= actual_pickup_at))
+    AND (actual_empty_return_at IS NULL OR actual_pickup_at IS NULL OR actual_empty_return_at >= actual_pickup_at))
 ) ENGINE=InnoDB COMMENT='目的港货柜级码头拖车与还空事实';
 CREATE TABLE IF NOT EXISTS fl_terminal_drayage_history (
   id BIGINT UNSIGNED NOT NULL COMMENT '历史ID', drayage_id BIGINT UNSIGNED NOT NULL COMMENT '码头拖车聚合ID',
@@ -18158,6 +18157,10 @@ CREATE TABLE IF NOT EXISTS fl_terminal_drayage_operation (
 
 -- MySQL DDL 会隐式提交；如果前次执行在末段校验失败，重跑时需把已创建表的列注释收敛到当前基线。
 ALTER TABLE fl_terminal_drayage
+  DROP CHECK chk_terminal_drayage_times,
+  ADD CONSTRAINT chk_terminal_drayage_times CHECK(
+    (actual_pickup_at IS NULL OR pickup_appointment_at IS NOT NULL) AND
+    (actual_empty_return_at IS NULL OR actual_pickup_at IS NULL OR actual_empty_return_at >= actual_pickup_at)),
   MODIFY COLUMN id BIGINT UNSIGNED NOT NULL COMMENT '目的港码头拖车聚合ID',
   MODIFY COLUMN container_booking_id BIGINT UNSIGNED NOT NULL COMMENT '唯一归属物理货柜ID',
   MODIFY COLUMN fleet_supplier_id BIGINT UNSIGNED NULL COMMENT 'Warehouse ACTIVE/TRUCKING供应商ID快照',
diff --git a/firstleg/pom.xml b/firstleg/pom.xml
index 1a35216ef..98dc43916 100644
--- a/firstleg/pom.xml
+++ b/firstleg/pom.xml
@@ -5,6 +5,7 @@
     <parent><groupId>com.baiyue.firstleg</groupId><artifactId>baiyue-firstleg-platform</artifactId><version>1.0.0-SNAPSHOT</version><relativePath>../pom.xml</relativePath></parent>
     <artifactId>firstleg-service</artifactId>
     <dependencies>
+        <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-mail</artifactId></dependency>
         <dependency><groupId>com.baiyue.shared</groupId><artifactId>baiyue-common-core</artifactId><version>${project.version}</version></dependency>
         <dependency><groupId>com.baiyue.shared</groupId><artifactId>common-event-contract</artifactId><version>${project.version}</version></dependency>
         <dependency><groupId>com.baiyue.shared</groupId><artifactId>baiyue-common-audit</artifactId><version>${project.version}</version></dependency>
diff --git a/firstleg/src/main/java/com/baiyue/firstleg/client/WarehouseSupplierClient.java b/firstleg/src/main/java/com/baiyue/firstleg/client/WarehouseSupplierClient.java
index 7559f7e14..a0874578a 100644
--- a/firstleg/src/main/java/com/baiyue/firstleg/client/WarehouseSupplierClient.java
+++ b/firstleg/src/main/java/com/baiyue/firstleg/client/WarehouseSupplierClient.java
@@ -24,4 +24,10 @@ public interface WarehouseSupplierClient {
 
     record Snapshot(long supplierId, String name, String category, String status,
                     List<String> carrierCodes) {}
+
+    @GetMapping("/{supplierId}/trucking-contact")
+    ApiResponse<TruckingContact> truckingContact(@RequestHeader("X-Internal-Service-Token") String token,
+        @PathVariable long supplierId, @RequestParam boolean requireActive);
+
+    record TruckingContact(long supplierId, String name, String email) {}
 }
diff --git a/firstleg/src/main/resources/db/phase3-terminal-drayage-schema.sql b/firstleg/src/main/resources/db/phase3-terminal-drayage-schema.sql
index f68365ccd..4b779b7fa 100644
--- a/firstleg/src/main/resources/db/phase3-terminal-drayage-schema.sql
+++ b/firstleg/src/main/resources/db/phase3-terminal-drayage-schema.sql
@@ -23,8 +23,7 @@ CREATE TABLE IF NOT EXISTS fl_terminal_drayage (
   CONSTRAINT fk_terminal_drayage_container FOREIGN KEY(container_booking_id) REFERENCES fl_container_booking(id),
   CONSTRAINT chk_terminal_drayage_times CHECK(
     (actual_pickup_at IS NULL OR pickup_appointment_at IS NOT NULL) AND
-    (actual_empty_return_at IS NULL OR actual_pickup_at IS NOT NULL) AND
-    (actual_empty_return_at IS NULL OR actual_empty_return_at >= actual_pickup_at))
+    (actual_empty_return_at IS NULL OR actual_pickup_at IS NULL OR actual_empty_return_at >= actual_pickup_at))
 ) ENGINE=InnoDB COMMENT='目的港货柜级码头拖车与还空事实';
 
 CREATE TABLE IF NOT EXISTS fl_terminal_drayage_history (
diff --git a/firstleg/src/test/java/com/baiyue/firstleg/terminaldrayage/mapper/TerminalDrayageSqlContractTest.java b/firstleg/src/test/java/com/baiyue/firstleg/terminaldrayage/mapper/TerminalDrayageSqlContractTest.java
index fd6635a2b..cac6e7aaf 100644
--- a/firstleg/src/test/java/com/baiyue/firstleg/terminaldrayage/mapper/TerminalDrayageSqlContractTest.java
+++ b/firstleg/src/test/java/com/baiyue/firstleg/terminaldrayage/mapper/TerminalDrayageSqlContractTest.java
@@ -8,6 +8,20 @@ import java.nio.file.Path;
 import static org.assertj.core.api.Assertions.assertThat;
 
 class TerminalDrayageSqlContractTest {
+    @Test
+    void bothSqlEntrypointsAllowReturnWithoutPickupAndRetainKnownTimeOrdering() throws Exception {
+        for (Path path : java.util.List.of(
+            Path.of("src/main/resources/db/phase3-terminal-drayage-schema.sql"),
+            Path.of("../deploy/sql/头程数据库统一增量-MySQL8.sql"))) {
+            String sql = Files.readString(path);
+            assertThat(sql).contains("actual_empty_return_at IS NULL OR actual_pickup_at IS NULL OR actual_empty_return_at >= actual_pickup_at")
+                .doesNotContain("actual_empty_return_at IS NULL OR actual_pickup_at IS NOT NULL");
+        }
+        String release = Files.readString(Path.of("../deploy/sql/头程数据库统一增量-MySQL8.sql"));
+        assertThat(release).contains("DROP CHECK chk_terminal_drayage_times",
+            "ADD CONSTRAINT chk_terminal_drayage_times CHECK(");
+    }
+
     @Test
     void schemaKeepsOneAggregatePerContainerAndImmutableAudit() throws Exception {
         String sql = Files.readString(Path.of("src/main/resources/db/phase3-terminal-drayage-schema.sql"));
diff --git a/warehouse/src/main/java/com/baiyue/warehouse/controller/InternalSupplierController.java b/warehouse/src/main/java/com/baiyue/warehouse/controller/InternalSupplierController.java
index be193cc9c..78cfb51e8 100644
--- a/warehouse/src/main/java/com/baiyue/warehouse/controller/InternalSupplierController.java
+++ b/warehouse/src/main/java/com/baiyue/warehouse/controller/InternalSupplierController.java
@@ -37,5 +37,17 @@ public class InternalSupplierController {
         return ApiResponse.success(service.internalBookingCandidates(carrierCode));
     }
 
+    public record TruckingContact(long supplierId, String name, String email) {}
+
+    @GetMapping("/{supplierId}/trucking-contact")
+    public ApiResponse<TruckingContact> truckingContact(
+            @RequestHeader(value="X-Internal-Service-Token", required=false) String token,
+            @PathVariable long supplierId, @RequestParam(defaultValue="true") boolean requireActive) {
+        requireToken(token);
+        service.internalSnapshot(supplierId, requireActive, "TRUCKING");
+        var supplier = service.detail(supplierId);
+        return ApiResponse.success(new TruckingContact(supplierId, supplier.name(), supplier.email()));
+    }
+
     private void requireToken(String token) { if (token == null || !MessageDigest.isEqual(expected, token.getBytes(StandardCharsets.UTF_8))) throw new BizException(ResultCode.FORBIDDEN, "内部服务凭证无效"); }
 }