diff --git a/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/ContractManage.java b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/ContractManage.java
index d56fec74..7398b13f 100644
--- a/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/ContractManage.java
+++ b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/ContractManage.java
@@ -209,4 +209,33 @@ public class ContractManage extends TenantEntity {
 	@Schema(description = "备注")
 	private String remark;
 
+	@Schema(description = "合规系统单据ID（fdContractId）")
+	private String hcsFdId;
+
+	@Schema(description = "合规同步状态 unsynced/synced/failed")
+	private String hcsSyncStatus;
+
+	@Schema(description = "合规推送失败重试次数")
+	@TableField(insertStrategy = FieldStrategy.ALWAYS, updateStrategy = FieldStrategy.ALWAYS)
+	private Integer hcsRetryCount;
+
+	@Schema(description = "合规最近同步时间")
+	private LocalDateTime hcsSyncTime;
+
+	@Schema(description = "合规最近同步结果信息/失败原因")
+	@TableField(insertStrategy = FieldStrategy.ALWAYS, updateStrategy = FieldStrategy.ALWAYS)
+	private String hcsSyncMsg;
+
+	@Schema(description = "合规履约计划ID（C103-9 返回 fdExeplanId）")
+	private String hcsExeplanId;
+
+	@Schema(description = "合规客商风险等级（C101-1，甲方/乙方取高）")
+	private String hcsRiskLevel;
+
+	@Schema(description = "合规客商黑名单状态（C101-1，甲方/乙方取是）")
+	private String hcsBlackStatus;
+
+	@Schema(description = "合规风险校验时间")
+	private LocalDateTime hcsRiskTime;
+
 }
diff --git a/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/HcsContractCheckLog.java b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/HcsContractCheckLog.java
new file mode 100644
index 00000000..f7815ad9
--- /dev/null
+++ b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/HcsContractCheckLog.java
@@ -0,0 +1,79 @@
+/**
+ * BladeX Commercial License Agreement
+ * Copyright (c) 2018-2099, https://bladex.cn. All rights reserved.
+ * <p>
+ * Use of this software is governed by the Commercial License Agreement
+ * obtained after purchasing a license from BladeX.
+ * <p>
+ * 1. This software is for development use only under a valid license
+ * from BladeX.
+ * <p>
+ * 2. Redistribution of this software's source code to any third party
+ * without a commercial license is strictly prohibited.
+ * <p>
+ * 3. Licensees may copyright their own code but cannot use segments
+ * from this software for such purposes. Copyright of this software
+ * remains with BladeX.
+ * <p>
+ * Using this software signifies agreement to this License, and the software
+ * must not be used for illegal purposes.
+ * <p>
+ * THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY. The author is
+ * not liable for any claims arising from secondary or illegal development.
+ * <p>
+ * Author: Chill Zhuang (bladejava@qq.com)
+ */
+package org.springblade.transport.pojo.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+import java.io.Serial;
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
+/**
+ * HCS 风险/额度校验留痕实体类（照 ops 日志惯例，仅插入不改）
+ *
+ * @author Chill
+ */
+@Data
+@TableName("blade_hcs_check_log")
+@Schema(description = "HCS 风险/额度校验留痕")
+public class HcsContractCheckLog implements Serializable {
+
+	@Serial
+	private static final long serialVersionUID = 1L;
+
+	@TableId(value = "id", type = IdType.ASSIGN_ID)
+	@Schema(description = "主键")
+	private Long id;
+
+	@Schema(description = "租户ID")
+	private String tenantId;
+
+	@Schema(description = "业务类型 project/contract/payment")
+	private String bizType;
+
+	@Schema(description = "业务单据ID")
+	private Long bizId;
+
+	@Schema(description = "校验类型 risk=客商风险/credit=额度")
+	private String checkType;
+
+	@Schema(description = "校验结果 pass=通过/fail=不通过/skip=跳过")
+	private String result;
+
+	@Schema(description = "校验说明")
+	private String msg;
+
+	@Schema(description = "合规系统链路追踪ID")
+	private String traceId;
+
+	@Schema(description = "创建时间")
+	private LocalDateTime createTime;
+
+}
diff --git a/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/ProjectApply.java b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/ProjectApply.java
index 5526da8e..410884ef 100644
--- a/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/ProjectApply.java
+++ b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/ProjectApply.java
@@ -198,4 +198,21 @@ public class ProjectApply extends TenantEntity {
 	@Schema(description = "作废原因")
 	private String voidReason;
 
+	@Schema(description = "合规系统单据ID（fdId）")
+	private String hcsFdId;
+
+	@Schema(description = "合规同步状态 unsynced/synced/failed")
+	private String hcsSyncStatus;
+
+	@Schema(description = "合规推送失败重试次数")
+	@TableField(insertStrategy = FieldStrategy.ALWAYS, updateStrategy = FieldStrategy.ALWAYS)
+	private Integer hcsRetryCount;
+
+	@Schema(description = "合规最近同步时间")
+	private LocalDateTime hcsSyncTime;
+
+	@Schema(description = "合规最近同步结果信息/失败原因")
+	@TableField(insertStrategy = FieldStrategy.ALWAYS, updateStrategy = FieldStrategy.ALWAYS)
+	private String hcsSyncMsg;
+
 }
diff --git a/blade-service/blade-transport/pom.xml b/blade-service/blade-transport/pom.xml
index b9ed58c8..2443ce7a 100644
--- a/blade-service/blade-transport/pom.xml
+++ b/blade-service/blade-transport/pom.xml
@@ -51,6 +51,10 @@
             <groupId>org.springblade</groupId>
             <artifactId>blade-bfi-api</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springblade</groupId>
+            <artifactId>blade-hcs-api</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-amqp</artifactId>
diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/constant/HcsSyncConstant.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/constant/HcsSyncConstant.java
new file mode 100644
index 00000000..ad7238fb
--- /dev/null
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/constant/HcsSyncConstant.java
@@ -0,0 +1,121 @@
+/**
+ * BladeX Commercial License Agreement
+ * Copyright (c) 2018-2099, https://bladex.cn. All rights reserved.
+ * <p>
+ * Use of this software is governed by the Commercial License Agreement
+ * obtained after purchasing a license from BladeX.
+ * <p>
+ * 1. This software is for development use only under a valid license
+ * from BladeX.
+ * <p>
+ * 2. Redistribution of this software's source code to any third party
+ * without a commercial license is strictly prohibited.
+ * <p>
+ * 3. Licensees may copyright their own code but cannot use segments
+ * from this software for such purposes. Copyright of this software
+ * remains with BladeX.
+ * <p>
+ * Using this software signifies agreement to this License, and the software
+ * must not be used for illegal purposes.
+ * <p>
+ * THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY. The author is
+ * not liable for any claims arising from secondary or illegal development.
+ * <p>
+ * Author: Chill Zhuang (bladejava@qq.com)
+ */
+package org.springblade.transport.constant;
+
+/**
+ * HCS（合同合规系统）同步常量（TMS 业务侧）
+ * <p>
+ * 命名照 {@link KingdeeBfiConstant} 惯例；与客户端模块 org.springblade.hcs.constant.HcsConstant 区分。
+ *
+ * @author Chill
+ */
+public final class HcsSyncConstant {
+
+	/**
+	 * 同步状态：待同步
+	 */
+	public static final String HCS_STATUS_UNSYNCED = "unsynced";
+
+	/**
+	 * 同步状态：已同步
+	 */
+	public static final String HCS_STATUS_SYNCED = "synced";
+
+	/**
+	 * 同步状态：同步失败
+	 */
+	public static final String HCS_STATUS_FAILED = "failed";
+
+	/**
+	 * 推送业务类型：项目立项（C102）
+	 */
+	public static final String BIZ_TYPE_PROJECT = "project";
+
+	/**
+	 * 推送业务类型：合同（C103）
+	 */
+	public static final String BIZ_TYPE_CONTRACT = "contract";
+
+	/**
+	 * 校验类型：客商风险（C101-1）
+	 */
+	public static final String CHECK_TYPE_RISK = "risk";
+
+	/**
+	 * 校验类型：额度（C106-1，P3 付款链使用）
+	 */
+	public static final String CHECK_TYPE_CREDIT = "credit";
+
+	/**
+	 * 校验结果：通过
+	 */
+	public static final String CHECK_RESULT_PASS = "pass";
+
+	/**
+	 * 校验结果：不通过（黑名单）
+	 */
+	public static final String CHECK_RESULT_FAIL = "fail";
+
+	/**
+	 * 校验结果：跳过（客商编号反查不到等）
+	 */
+	public static final String CHECK_RESULT_SKIP = "skip";
+
+	// ==================== Redis 缓存 key（照 BFI blade:third: 前缀惯例） ====================
+
+	/**
+	 * 主数据缓存：合同模板列表
+	 */
+	public static final String MASTER_CACHE_TEMPLATES = "blade:third:hcs:master:templates";
+
+	/**
+	 * 主数据缓存：合同分类列表
+	 */
+	public static final String MASTER_CACHE_CATEGORIES = "blade:third:hcs:master:categories";
+
+	/**
+	 * 主数据缓存：币种列表
+	 */
+	public static final String MASTER_CACHE_CURRENCIES = "blade:third:hcs:master:currencies";
+
+	/**
+	 * 附件映射缓存 key 前缀（hcs:att:{attachmentKey}，TMS 附件元数据键 → 合规附件ID）
+	 */
+	public static final String ATTACHMENT_CACHE_KEY_PREFIX = "blade:third:hcs:att:";
+
+	/**
+	 * 附件映射缓存 TTL（天），重复上传仅浪费存储无业务风险，故不做持久化映射表（设计文档 §6）
+	 */
+	public static final long ATTACHMENT_CACHE_TTL_DAYS = 7L;
+
+	/**
+	 * 推送任务分布式锁 key（多实例部署防重扫）
+	 */
+	public static final String PUSH_TASK_LOCK_KEY = "blade:third:hcs:push:task:lock";
+
+	private HcsSyncConstant() {
+	}
+}
diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/mapper/HcsContractCheckLogMapper.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/mapper/HcsContractCheckLogMapper.java
new file mode 100644
index 00000000..74bca5c8
--- /dev/null
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/mapper/HcsContractCheckLogMapper.java
@@ -0,0 +1,40 @@
+/**
+ * BladeX Commercial License Agreement
+ * Copyright (c) 2018-2099, https://bladex.cn. All rights reserved.
+ * <p>
+ * Use of this software is governed by the Commercial License Agreement
+ * obtained after purchasing a license from BladeX.
+ * <p>
+ * 1. This software is for development use only under a valid license
+ * from BladeX.
+ * <p>
+ * 2. Redistribution of this software's source code to any third party
+ * without a commercial license is strictly prohibited.
+ * <p>
+ * 3. Licensees may copyright their own code but cannot use segments
+ * from this software for such purposes. Copyright of this software
+ * remains with BladeX.
+ * <p>
+ * Using this software signifies agreement to this License, and the software
+ * must not be used for illegal purposes.
+ * <p>
+ * THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY. The author is
+ * not liable for any claims arising from secondary or illegal development.
+ * <p>
+ * Author: Chill Zhuang (bladejava@qq.com)
+ */
+package org.springblade.transport.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+import org.springblade.transport.pojo.entity.HcsContractCheckLog;
+
+/**
+ * HCS 风险/额度校验留痕 Mapper
+ *
+ * @author Chill
+ */
+@Mapper
+public interface HcsContractCheckLogMapper extends BaseMapper<HcsContractCheckLog> {
+
+}
diff --git a/doc/sql/transport/blade_hcs_contract_fields_20260927.sql b/doc/sql/transport/blade_hcs_contract_fields_20260927.sql
new file mode 100644
index 00000000..ec6854b5
--- /dev/null
+++ b/doc/sql/transport/blade_hcs_contract_fields_20260927.sql
@@ -0,0 +1,55 @@
+-- 桂物合同合规系统（HCS）接入：合同扩展字段与校验留痕表（设计文档 §4，P1）。
+-- blade_contract_manage 追加履约计划ID与风险留痕字段；新建 blade_hcs_check_log 校验留痕表。
+-- 通过 information_schema 判断字段/表是否存在，可重复执行。
+SET @db_name = DATABASE();
+
+-- ==================== blade_contract_manage 扩展字段（C103 回填、履约计划ID、风险留痕） ====================
+
+SET @sql = IF(
+  EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema = @db_name AND table_name = 'blade_contract_manage' AND column_name = 'hcs_exeplan_id'),
+  'SELECT 1',
+  'ALTER TABLE blade_contract_manage ADD COLUMN hcs_exeplan_id varchar(64) DEFAULT NULL COMMENT ''合规履约计划ID（C103-9 返回 fdExeplanId）'''
+);
+PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
+
+SET @sql = IF(
+  EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema = @db_name AND table_name = 'blade_contract_manage' AND column_name = 'hcs_risk_level'),
+  'SELECT 1',
+  'ALTER TABLE blade_contract_manage ADD COLUMN hcs_risk_level varchar(8) DEFAULT NULL COMMENT ''合规客商风险等级（C101-1，甲方/乙方取高）'''
+);
+PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
+
+SET @sql = IF(
+  EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema = @db_name AND table_name = 'blade_contract_manage' AND column_name = 'hcs_black_status'),
+  'SELECT 1',
+  'ALTER TABLE blade_contract_manage ADD COLUMN hcs_black_status varchar(8) DEFAULT NULL COMMENT ''合规客商黑名单状态（C101-1，甲方/乙方取是）'''
+);
+PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
+
+SET @sql = IF(
+  EXISTS (SELECT 1 FROM information_schema.columns WHERE table_schema = @db_name AND table_name = 'blade_contract_manage' AND column_name = 'hcs_risk_time'),
+  'SELECT 1',
+  'ALTER TABLE blade_contract_manage ADD COLUMN hcs_risk_time datetime DEFAULT NULL COMMENT ''合规风险校验时间'''
+);
+PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
+
+-- ==================== blade_hcs_check_log 校验留痕表（照 ops 日志惯例） ====================
+
+SET @sql = IF(
+  EXISTS (SELECT 1 FROM information_schema.tables WHERE table_schema = @db_name AND table_name = 'blade_hcs_check_log'),
+  'SELECT 1',
+  'CREATE TABLE blade_hcs_check_log (
+    id bigint NOT NULL COMMENT ''主键'',
+    tenant_id varchar(12) DEFAULT ''000000'' COMMENT ''租户ID'',
+    biz_type varchar(32) DEFAULT NULL COMMENT ''业务类型 project/contract/payment'',
+    biz_id bigint DEFAULT NULL COMMENT ''业务单据ID'',
+    check_type varchar(16) DEFAULT NULL COMMENT ''校验类型 risk=客商风险/credit=额度'',
+    result varchar(16) DEFAULT NULL COMMENT ''校验结果 pass=通过/fail=不通过/skip=跳过'',
+    msg varchar(512) DEFAULT NULL COMMENT ''校验说明'',
+    trace_id varchar(64) DEFAULT NULL COMMENT ''合规系统链路追踪ID'',
+    create_time datetime DEFAULT NULL COMMENT ''创建时间'',
+    PRIMARY KEY (id),
+    KEY idx_hcs_check_log_biz (biz_type, biz_id)
+  ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT=''HCS 风险/额度校验留痕'''
+);
+PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
diff --git a/pom.xml b/pom.xml
index f064dd95..650240cc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -159,6 +159,11 @@
                 <artifactId>blade-bfi-api</artifactId>
                 <version>${revision}</version>
             </dependency>
+            <dependency>
+                <groupId>org.springblade</groupId>
+                <artifactId>blade-hcs-api</artifactId>
+                <version>${revision}</version>
+            </dependency>
             <dependency>
                 <groupId>org.springblade</groupId>
                 <artifactId>blade-wechat-api</artifactId>