feat: 收益互换开平仓及收益结算接入OA移动审批

#EQD-6425 国联民生-衍生品系统移动审批（提交OA流程）
- 审批节点支持配置“关联OA移动审批”
- 创建OA流程并记录请求、requestId、状态及异常备注
- 支持OA轮询同步审批通过、退回和归档状态
- 本地通过、拒绝、撤回时同步强制归档未结束OA流程
- 增加审批列表OA备注展示及本地Mock联调接口
- 新增OA审批记录表和数据库升级脚本
- OA移动审批使用独立查询地址及isnextflow配置，不影响交易确认书OA

YLErpWeb/WebAPI/Controllers/TradeApprovalOAJobController.cs

@@ -0,0 +1,25 @@
+using System.Text.Json;
+using YLErp.Helpers;
+using YLErp.Model;
+using YLErp.Modules.TradeModule;
+
+namespace YLErp.Web.WebAPI.Controllers
+{
+    /// <summary>国联民生衍生品移动审批轮询入口，由 PowerJob 等外部调度器调用。</summary>
+    [ApiController]
+    public class TradeApprovalOAJobController : ControllerBase
+    {
+        [HttpPost]
+        [Route("api/job/tradeApproval/syncOAStatus")]
+        public JsonResult SyncOAStatus([FromQuery] string requestId = null)
+        {
+            var configKey = AppManager.GetConfiguration()["JobConfig:ApiKey"];
+            if (!string.IsNullOrEmpty(configKey) && Request.Headers["X-Job-Api-Key"].FirstOrDefault() != configKey)
+                return new JsonResult(new { code = 401, msg = "Invalid API Key" });
+
+            var user = new OptUserInfo(0, "系统移动审批同步", OptUserFrom.System);
+            var messages = new TradeApprovalOAService(user).SyncPendingStatuses(requestId);
+            return new JsonResult(new { code = 0, data = new { total = messages.Count, details = messages } }, new JsonSerializerOptions { PropertyNamingPolicy = JsonNamingPolicy.CamelCase });
+        }
+    }
+}

YLErpWeb/WebAPI/Controllers/TradeApprovalOaMockController.cs

@@ -0,0 +1,110 @@
+using System.Collections.Concurrent;
+using System.Text.Json;
+using YLErp.Helpers;
+
+namespace YLErp.Web.WebAPI.Controllers
+{
+    /// <summary>
+    /// 仅供本地开发验证收益互换移动审批调用链的 OA 模拟接口。
+    /// </summary>
+    [ApiController]
+    [Route("api/mock/tradeApprovalOa")]
+    public class TradeApprovalOaMockController : ControllerBase
+    {
+        private static readonly ConcurrentDictionary<string, MockOaFlow> Flows = new();
+        private static readonly JsonSerializerOptions JsonOptions = new()
+        {
+            PropertyNamingPolicy = JsonNamingPolicy.CamelCase
+        };
+
+        [HttpPost("createOaFlow")]
+        public IActionResult CreateOaFlow([FromBody] JsonElement payload)
+        {
+            if (!IsEnabled()) return NotFound();
+
+            var requestId = "mock-" + Guid.NewGuid().ToString("N");
+            Flows[requestId] = new MockOaFlow { RequestId = requestId };
+            return Json(new { code = 0, data = new { msg = string.Empty, requestid = requestId }, status = "SUCCESS" });
+        }
+
+        [HttpGet("getRequestData")]
+        public IActionResult GetRequestData([FromQuery] string requestId)
+        {
+            if (!IsEnabled()) return NotFound();
+
+            if (!Flows.TryGetValue(requestId ?? string.Empty, out var flow))
+                return Json(new { code = 0, data = Array.Empty<object>(), status = "SUCCESS" });
+
+            return Json(new
+            {
+                code = 0,
+                data = new[] { new { requestId = flow.RequestId, flowStatusType = flow.FlowStatusType, status = flow.Status } },
+                status = "SUCCESS"
+            });
+        }
+
+        [HttpPost("forceEndOaFlow")]
+        public IActionResult ForceEndOaFlow([FromQuery] string requestId)
+        {
+            if (!IsEnabled()) return NotFound();
+
+            if (requestId != null && Flows.TryGetValue(requestId, out var flow))
+            {
+                flow.FlowStatusType = "3";
+                flow.Status = "归档";
+                flow.IsEnded = true;
+            }
+
+            return Json(new { code = 0, data = new { resultcode = "0" }, status = "SUCCESS" });
+        }
+
+        [HttpPost("setStatus")]
+        public IActionResult SetStatus([FromQuery] string requestId, [FromQuery] string flowStatusType, [FromQuery] string status = null)
+        {
+            if (!IsEnabled()) return NotFound();
+            if (flowStatusType != "0" && flowStatusType != "1" && flowStatusType != "2" && flowStatusType != "3")
+                return BadRequest(new { code = 1, msg = "flowStatusType 只能为 0、1 或 2" });
+            if (!Flows.TryGetValue(requestId ?? string.Empty, out var flow))
+                return NotFound(new { code = 1, msg = "未找到 requestId" });
+            if (flow.IsEnded)
+                return BadRequest(new { code = 1, msg = "OA 流程已归档" });
+
+            flow.FlowStatusType = flowStatusType;
+            if (!string.IsNullOrWhiteSpace(status))
+                flow.Status = status;
+            return Json(new { code = 0, data = new { requestId, flowStatusType, status = flow.Status }, status = "SUCCESS" });
+        }
+
+        [HttpGet("flows")]
+        public IActionResult GetFlows()
+        {
+            if (!IsEnabled()) return NotFound();
+
+            return Json(new
+            {
+                code = 0,
+                data = Flows.Values.Select(x => new { requestId = x.RequestId, flowStatusType = x.FlowStatusType, status = x.Status, isEnded = x.IsEnded }),
+                status = "SUCCESS"
+            });
+        }
+
+        private static bool IsEnabled()
+        {
+            return bool.TryParse(AppManager.GetConfiguration()["TradeApprovalOaMock:Enabled"], out var enabled) && enabled;
+        }
+
+        private JsonResult Json(object value)
+        {
+            return new JsonResult(value, JsonOptions);
+        }
+
+        private sealed class MockOaFlow
+        {
+            public string RequestId { get; set; }
+            public string FlowStatusType { get; set; } = "0";
+            public string Status { get; set; } = "创建";
+            public bool IsEnded { get; set; }
+        }
+
+    }
+}