feat(osi): 实现 JKDA 档案 Create/Update 与创建请求契约（T-206）

- contract/jkda.go 补创建请求结构体（healthRecord + manageInfo + 既往史节点）
- osi/jkda.go 新增 CreateHealthRecord/UpdateHealthRecord
- osi/codes.go 登记 JKDA00001 create / JKDA00003 update serviceId 与路径
- mapping 映射创建路径（真实字典快照反查主数据）
- 代码与单测完成；真实 create 待安全测试档案与写入授权（见 tasks.md T-206 BLOCKED）

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

osi/client.go

@@ -49,6 +49,18 @@ func NewClient(config ClientConfig) *Client {
 }
 
 func (c *Client) Call(ctx context.Context, serviceID string, baseInfo any, out any) (Result, error) {
+	uploadInfo := contract.UploadInfo{
+		BaseInfo: baseInfo,
+		ManageInfo: contract.ManageInfo{
+			DSFMC:       c.config.UserName,
+			OperateUser: c.config.OperateUser,
+			OperateUnit: c.operateUnit(),
+		},
+	}
+	return c.callUploadInfo(ctx, serviceID, uploadInfo, out)
+}
+
+func (c *Client) callUploadInfo(ctx context.Context, serviceID string, uploadInfo any, out any) (Result, error) {
 	if c.transport == nil {
 		transport, err := NewTransport(TransportConfig{})
 		if err != nil {
@@ -63,15 +75,8 @@ func (c *Client) Call(ctx context.Context, serviceID string, baseInfo any, out a
 	}
 
 	payload := contract.Envelope{
-		ServiceID: serviceID,
-		UploadInfo: contract.UploadInfo{
-			BaseInfo: baseInfo,
-			ManageInfo: contract.ManageInfo{
-				DSFMC:       c.config.UserName,
-				OperateUser: c.config.OperateUser,
-				OperateUnit: c.operateUnit(),
-			},
-		},
+		ServiceID:  serviceID,
+		UploadInfo: uploadInfo,
 	}
 
 	targetURL := c.urlFor(path)