Merge branch 'glms/feature/1.4.2' into glms/feature/0812_zmr_divPower

# Conflicts:
#	YLErpDAL/Modules/EodModule/BondPaymentService.cs
#	YLErpDAL/Modules/SwapModule/SwapDealService.cs

UnitTestProject/Modules/ClientModule/ClientBlackApprovalPolicyTests.cs

@@ -0,0 +1,133 @@
+using YLErp.Model;
+
+namespace YLErp.Modules.ClientModule.Tests
+{
+    [TestClass]
+    public class ClientBlackApprovalPolicyTests
+    {
+        [DataTestMethod]
+        [DataRow(client_black.未提交, false)]
+        [DataRow(client_black.新增审批中, false)]
+        [DataRow(client_black.新增已拒绝, false)]
+        [DataRow(client_black.已加入, true)]
+        [DataRow(client_black.删除审批中, true)]
+        [DataRow(client_black.删除已拒绝, true)]
+        public void IsEffective_OnlyAppliedOrPendingRemovalStatesAreEffective(string state, bool expected)
+        {
+            Assert.AreEqual(expected, ClientBlackApprovalPolicy.IsEffective(state));
+        }
+
+        [DataTestMethod]
+        [DataRow(client_black.未提交, true)]
+        [DataRow(client_black.新增已拒绝, true)]
+        [DataRow(client_black.新增审批中, false)]
+        [DataRow(client_black.已加入, false)]
+        [DataRow(client_black.删除审批中, false)]
+        [DataRow(client_black.删除已拒绝, false)]
+        public void CanSubmitAddition_OnlyDraftOrRejectedAdditionCanSubmit(string state, bool expected)
+        {
+            Assert.AreEqual(expected, ClientBlackApprovalPolicy.CanSubmitAddition(state));
+        }
+
+        [DataTestMethod]
+        [DataRow(client_black.已加入, true)]
+        [DataRow(client_black.删除已拒绝, true)]
+        [DataRow(client_black.未提交, false)]
+        [DataRow(client_black.新增审批中, false)]
+        [DataRow(client_black.新增已拒绝, false)]
+        [DataRow(client_black.删除审批中, false)]
+        public void CanRequestRemoval_OnlyEffectiveNonPendingRemovalStatesCanRequest(string state, bool expected)
+        {
+            Assert.AreEqual(expected, ClientBlackApprovalPolicy.CanRequestRemoval(state));
+        }
+
+        [DataTestMethod]
+        [DataRow(client_black.未提交, true)]
+        [DataRow(client_black.新增已拒绝, true)]
+        [DataRow(client_black.新增审批中, false)]
+        [DataRow(client_black.已加入, false)]
+        [DataRow(client_black.删除审批中, false)]
+        [DataRow(client_black.删除已拒绝, false)]
+        public void CanDeleteDraft_OnlyNeverEffectiveStatesCanDeleteDirectly(string state, bool expected)
+        {
+            Assert.AreEqual(expected, ClientBlackApprovalPolicy.CanDeleteDraft(state));
+        }
+
+        [DataTestMethod]
+        [DataRow(client_black.新增审批中, 1, true)]
+        [DataRow(client_black.删除审批中, 1, true)]
+        [DataRow(client_black.新增审批中, 2, false)]
+        [DataRow(client_black.删除审批中, 2, false)]
+        [DataRow(client_black.未提交, 0, false)]
+        public void CanWithdraw_OnlyFirstApprovalNodeCanWithdraw(string state, int approvalProcess, bool expected)
+        {
+            Assert.AreEqual(expected, ClientBlackApprovalPolicy.CanWithdraw(state, approvalProcess));
+        }
+
+        [DataTestMethod]
+        [DataRow(client_black.新增审批中, client_black.新增已拒绝)]
+        [DataRow(client_black.删除审批中, client_black.删除已拒绝)]
+        public void RejectedState_DistinguishesAdditionAndRemoval(string state, string expected)
+        {
+            Assert.AreEqual(expected, ClientBlackApprovalPolicy.GetRejectedState(state));
+        }
+
+        [DataTestMethod]
+        [DataRow(client_black.新增审批中, client_black.未提交, 0)]
+        [DataRow(client_black.删除审批中, client_black.已加入, -2)]
+        public void WithdrawState_RestoresStateBeforeSubmission(string state, string expectedState, int expectedProcess)
+        {
+            var result = ClientBlackApprovalPolicy.GetWithdrawResult(state);
+
+            Assert.AreEqual(expectedState, result.State);
+            Assert.AreEqual(expectedProcess, result.ApprovalProcess);
+        }
+
+        [DataTestMethod]
+        [DataRow(client_black.新增审批中, client_black.已加入, false)]
+        [DataRow(client_black.删除审批中, null, true)]
+        public void GetFinalResult_AdditionAppliesAndRemovalDeletes(string state, string expectedState, bool expectedDelete)
+        {
+            var result = ClientBlackApprovalPolicy.GetFinalResult(state);
+
+            Assert.AreEqual(expectedState, result.State);
+            Assert.AreEqual(expectedDelete, result.ShouldDelete);
+        }
+
+        [DataTestMethod]
+        [DataRow(false, client_black.已加入, -2, true)]
+        [DataRow(true, client_black.未提交, 0, false)]
+        public void GetAdditionResult_OnlyEffectiveWithoutApprovalProcess(bool hasApprovalProcess, string expectedState, int expectedProcess, bool expectedEffective)
+        {
+            var result = ClientBlackApprovalPolicy.GetAdditionResult(hasApprovalProcess);
+
+            Assert.AreEqual(expectedState, result.State);
+            Assert.AreEqual(expectedProcess, result.ApprovalProcess);
+            Assert.AreEqual(expectedEffective, result.IsEffective);
+        }
+
+        [DataTestMethod]
+        [DataRow(false, client_black.已加入, -2, true)]
+        [DataRow(true, client_black.删除审批中, 1, false)]
+        public void GetRemovalResult_OnlyDeletesImmediatelyWithoutApprovalProcess(bool hasApprovalProcess, string expectedState, int expectedProcess, bool expectedDelete)
+        {
+            var result = ClientBlackApprovalPolicy.GetRemovalResult(hasApprovalProcess);
+
+            Assert.AreEqual(expectedState, result.State);
+            Assert.AreEqual(expectedProcess, result.ApprovalProcess);
+            Assert.AreEqual(expectedDelete, result.ShouldDelete);
+        }
+
+        [DataTestMethod]
+        [DataRow(client_black.未提交, true)]
+        [DataRow(client_black.新增已拒绝, true)]
+        [DataRow(client_black.新增审批中, false)]
+        [DataRow(client_black.删除审批中, false)]
+        [DataRow(client_black.已加入, true)]
+        [DataRow(client_black.删除已拒绝, true)]
+        public void CanReplaceRemarks_ApprovalPendingRowsCannotBeOverwritten(string state, bool expected)
+        {
+            Assert.AreEqual(expected, ClientBlackApprovalPolicy.CanReplaceRemarks(state));
+        }
+    }
+}

UnitTestProject/Modules/DataProviderModule/Fr007FixingCacheTest.cs

@@ -0,0 +1,137 @@
+using YLErp.Modules.DataProviderModule;
+
+namespace YLErp.Modules.DataProviderModule
+{
+    /// <summary>
+    /// Fr007FixingCache 快照缓存行为契约（纯内存，不连库；Loader/时钟均为注入接缝）：
+    /// ① 首次访问批量预载、命中 O(1)；② miss 不进快照（负缓存防线——当日发布前 miss、发布后须能查到）；
+    /// ③ 写侧版本失效：Invalidate 后立即重载取到新值（不等 TTL）；④ TTL 过期自动重载（直改库兜底）；
+    /// ⑤ TTL 窗口内无写入不重载（零查询稳态）。
+    /// </summary>
+    [TestClass]
+    public class Fr007FixingCacheTest
+    {
+        private static readonly DateTime D1 = new(2026, 7, 6);
+        private static readonly DateTime D2 = new(2026, 7, 13);
+        private int _loadCount;
+        private Dictionary<DateTime, double> _market;
+
+        [TestInitialize]
+        public void Init()
+        {
+            _loadCount = 0;
+            _market = new Dictionary<DateTime, double> { [D1] = 0.0142, [D2] = 0.01425 };
+            Fr007FixingCache.ResetForTest();
+            Fr007FixingCache.LoadSnapshot = () => { _loadCount++; return new Dictionary<DateTime, double>(_market); };
+        }
+
+        [TestCleanup]
+        public void Cleanup() => Fr007FixingCache.ResetForTest();
+
+        private static void AdvanceClock(long ticks) => Fr007FixingCache.NowTicks = () => ticks;
+
+        [TestMethod]
+        public void 首次访问预载并命中()
+        {
+            Fr007FixingCache.NowTicks = () => 1_000_000L;
+            Assert.IsTrue(Fr007FixingCache.TryGet(D1, out var p1), "预载后历史定盘应命中");
+            Assert.AreEqual(0.0142, p1, 1e-12);
+            Assert.AreEqual(1, _loadCount, "首次访问恰好装载一次");
+            Assert.IsTrue(Fr007FixingCache.TryGet(D2, out var p2), "同快照内多次命中");
+            Assert.AreEqual(0.01425, p2, 1e-12);
+            Assert.AreEqual(1, _loadCount, "命中不应重复装载");
+        }
+
+        [TestMethod]
+        public void miss不进快照_当日新发布经直查兜底后TTL内可见()
+        {
+            Fr007FixingCache.NowTicks = () => 1_000_000L;
+            var today = new DateTime(2026, 8, 18);
+            Assert.IsFalse(Fr007FixingCache.TryGet(today, out _), "快照无该行应 miss（调用方直查库兜底）");
+            Assert.AreEqual(1, _loadCount);
+
+            // 直查库发现了新发布的当日行 → 写侧失效（SwapFlowService 场景）→ 重载后可见
+            _market[today] = 0.0143;
+            Fr007FixingCache.Invalidate();
+            Assert.IsTrue(Fr007FixingCache.TryGet(today, out var p), "写侧失效重载后当日行应可见");
+            Assert.AreEqual(0.0143, p, 1e-12);
+            Assert.AreEqual(2, _loadCount);
+        }
+
+        [TestMethod]
+        public void 写侧失效立即重载取到修正值_不等TTL()
+        {
+            Fr007FixingCache.NowTicks = () => 1_000_000L;
+            Fr007FixingCache.TryGet(D1, out _);
+            Assert.AreEqual(1, _loadCount);
+
+            _market[D1] = 0.0150; // 界面修正错价
+            Fr007FixingCache.Invalidate();
+
+            // 时钟只走了 1 tick（远小于 TTL），仍必须重载
+            Fr007FixingCache.NowTicks = () => 1_000_001L;
+            Assert.IsTrue(Fr007FixingCache.TryGet(D1, out var p), "修正后仍应命中");
+            Assert.AreEqual(0.0150, p, 1e-12, "TTL 未到也必须看到写侧修正值");
+            Assert.AreEqual(2, _loadCount, "版本失效应立即触发重载");
+        }
+
+        [TestMethod]
+        public void TTL过期自动重载_直改库兜底()
+        {
+            Fr007FixingCache.NowTicks = () => 1_000_000L;
+            Fr007FixingCache.TryGet(D1, out _);
+            Assert.AreEqual(1, _loadCount);
+
+            _market[D1] = 0.0160; // 直改库（无 Invalidate）
+            Fr007FixingCache.NowTicks = () => 1_000_000L + TimeSpan.FromMinutes(1).Ticks + 1; // TTL+1 tick
+
+            Assert.IsTrue(Fr007FixingCache.TryGet(D1, out var p));
+            Assert.AreEqual(0.0160, p, 1e-12, "TTL 过期后应重载并看到直改库的新值");
+            Assert.AreEqual(2, _loadCount);
+        }
+
+        [TestMethod]
+        public void TTL窗口内无写入零重载()
+        {
+            Fr007FixingCache.NowTicks = () => 1_000_000L;
+            Fr007FixingCache.TryGet(D1, out _);
+
+            Fr007FixingCache.NowTicks = () => 1_000_000L + TimeSpan.FromMinutes(1).Ticks - 1; // TTL-1 tick：稳态窗口
+            for (int i = 0; i < 10; i++) Fr007FixingCache.TryGet(D1, out _);
+
+            Assert.AreEqual(1, _loadCount, "稳态窗口内多次读取零重载（零查询）");
+        }
+
+        [TestMethod]
+        public void TTL过期重载失败_保留旧快照不抛_且窗口内不重试()
+        {
+            Fr007FixingCache.NowTicks = () => 1_000_000L;
+            Assert.IsTrue(Fr007FixingCache.TryGet(D1, out _), "先成功装载一次");
+            Assert.AreEqual(1, _loadCount);
+
+            Fr007FixingCache.LoadSnapshot = () => { _loadCount++; throw new InvalidOperationException("db down"); };
+            Fr007FixingCache.NowTicks = () => 1_000_000L + TimeSpan.FromMinutes(1).Ticks + 1; // TTL 过期 → 触发重载 → 失败
+
+            // 不抛：历史定盘不可变，命中继续走旧快照（异常会直接 fail 本用例）
+            Assert.IsTrue(Fr007FixingCache.TryGet(D1, out var p), "重载失败应保留旧快照继续命中");
+            Assert.AreEqual(0.0142, p, 1e-12, "旧快照值不变");
+            Assert.AreEqual(2, _loadCount, "失败的重载尝试恰好一次");
+
+            Fr007FixingCache.TryGet(D2, out _); // TTL 时钟已被重置：窗口内不再重试（防重试风暴）
+            Assert.AreEqual(2, _loadCount, "失败后TTL窗口内不得反复重试全表SELECT");
+        }
+
+        [TestMethod]
+        public void 首次装载失败_miss不抛_窗口内不重试()
+        {
+            Fr007FixingCache.LoadSnapshot = () => { _loadCount++; throw new InvalidOperationException("db down"); };
+            Fr007FixingCache.NowTicks = () => 1_000_000L;
+
+            Assert.IsFalse(Fr007FixingCache.TryGet(D1, out _), "装载失败=空快照miss（调用方直查库兜底，新数据该响仍响）");
+            Assert.AreEqual(1, _loadCount);
+
+            Fr007FixingCache.TryGet(D1, out _);
+            Assert.AreEqual(1, _loadCount, "失败后TTL窗口内不重试");
+        }
+    }
+}

UnitTestProject/Modules/DbDiagnoseGuard.cs

@@ -0,0 +1,33 @@
+namespace YLErp.Modules
+{
+    /// <summary>
+    /// DbDiagnose 用例自守卫：真实探测一次测试库可达性并缓存结论（整个测试进程共享）。
+    /// 不可达 → Assert.Inconclusive：裸跑全量不再出假红，且多个用例只付一次连接超时。
+    /// 原先各用例把 try 挂在 GetYLDbContext() 上是无效守卫——EF context 构造不连库，
+    /// Connect Timeout 发生在首个查询执行时，守卫永远打不中。
+    /// </summary>
+    public static class DbDiagnoseGuard
+    {
+        private static int _state; // 0=未探测 1=可达 2=不可达
+
+        public static void RequireTestDb()
+        {
+            var state = Volatile.Read(ref _state);
+            if (state == 1) return;
+            if (state == 2) Assert.Inconclusive("测试库不可达（结论已缓存），跳过 DbDiagnose 用例");
+
+            try
+            {
+                using var db = DbContextFactory.GetYLDbContext();
+                if (!db.Database.CanConnect())
+                    throw new InvalidOperationException("CanConnect=false");
+                Volatile.Write(ref _state, 1);
+            }
+            catch (Exception ex)
+            {
+                Volatile.Write(ref _state, 2);
+                Assert.Inconclusive($"无法连接测试库，跳过 DbDiagnose 用例：{ex.Message}");
+            }
+        }
+    }
+}

UnitTestProject/Modules/EodModule/GLMS20260805FR007UnderlyingIdDiagnoseTest.cs

@@ -31,6 +31,7 @@ namespace YLErp.Modules.EodModule
         [TestCategory("DbDiagnose")]
         public void Diagnose_FR007_UnderlyingIdMismatch()
         {
+            DbDiagnoseGuard.RequireTestDb();
             YLContext db;
             try { db = DbContextFactory.GetYLDbContext(); }
             catch (Exception ex) { Assert.Inconclusive($"无法连接测试库：{ex.Message}"); return; }
@@ -164,6 +165,7 @@ namespace YLErp.Modules.EodModule
         public void Diagnose_Trade_FR007_ResetDays()
         {
             const string TradeNumber = "GLMS-JIATT-20260805-FICC-01-2180120IB";
+            DbDiagnoseGuard.RequireTestDb();
             YLContext db;
             try { db = DbContextFactory.GetYLDbContext(); }
             catch (Exception ex) { Assert.Inconclusive($"无法连接测试库：{ex.Message}"); return; }
@@ -256,6 +258,7 @@ namespace YLErp.Modules.EodModule
         public void Diagnose_EOD_vs_Unwind_Compound_DailyCompare()
         {
             const string TradeNumber = "GLMS-JIATT-20260805-FICC-01-2180120IB";
+            DbDiagnoseGuard.RequireTestDb();
             YLContext db;
             try { db = DbContextFactory.GetYLDbContext(); }
             catch (Exception ex) { Assert.Inconclusive($"无法连接测试库：{ex.Message}"); return; }
@@ -367,6 +370,7 @@ namespace YLErp.Modules.EodModule
         {
             const string TradeNumber = "GLMS-JIATT-20260805-FICC-01-2180120IB";
             const long CompoundPositionId = 38122;
+            DbDiagnoseGuard.RequireTestDb();
             YLContext db;
             try { db = DbContextFactory.GetYLDbContext(); }
             catch (Exception ex) { Assert.Inconclusive($"无法连接测试库：{ex.Message}"); return; }
@@ -431,6 +435,7 @@ namespace YLErp.Modules.EodModule
         public void Diagnose_Trade_804_ResetDay_FloatRate_Trace()
         {
             const string TradeNumber = "GLMS-JIATT-20260805-FICC-01-2180120IB";
+            DbDiagnoseGuard.RequireTestDb();
             YLContext db;
             try { db = DbContextFactory.GetYLDbContext(); }
             catch (Exception ex) { Assert.Inconclusive($"无法连接测试库：{ex.Message}"); return; }
@@ -528,6 +533,7 @@ namespace YLErp.Modules.EodModule
         public void Diagnose_Trade_AllLegs_And_EodMapping()
         {
             const string TradeNumber = "GLMS-JIATT-20260805-FICC-01-2180120IB";
+            DbDiagnoseGuard.RequireTestDb();
             YLContext db;
             try { db = DbContextFactory.GetYLDbContext(); }
             catch (Exception ex) { Assert.Inconclusive($"无法连接测试库：{ex.Message}"); return; }

UnitTestProject/Modules/SwapModule/Accrual/CompoundCarryInTest.cs

@@ -0,0 +1,107 @@
+using Newtonsoft.Json;
+using YLErp;
+using YLErp.Modules.SwapModule;
+using YLErp.Modules.SwapModule.Accrual;
+
+namespace UnitTestProject.Modules.SwapModule.Accrual
+{
+    /// <summary>
+    /// EQD-6977 carryInInterest 契约测试：
+    /// 1) 默认 0 与旧逐日循环逐位一致（加参零行为变化的安全证明）；
+    /// 2) carry-in 仅在【首个重置日】并入计息基数（非窗口首日起息）——
+    ///    与"持有至到期"全期轨迹对齐的数学不变量：增量 = carryIn × 后续段日利率 × 后续段天数。
+    /// </summary>
+    [TestClass]
+    public class CompoundCarryInTest
+    {
+        private const decimal Notional = 100_000_000m;
+        private const decimal Spread = 0.0025m;
+        private const int AnnualDays = 365;
+        private static readonly DateTime StartDate = new(2026, 4, 21);
+        private static readonly DateTime EndDate = new(2026, 5, 11); // 21天 = 3×7，末日是重置日
+
+        private static swap_position CreatePosition()
+        {
+            return new swap_position
+            {
+                id = 1001, SwapTradeId = 1, PosiDirection = 0,
+                InterestDirection = (int)SwapDirectionEnum.收取,
+                InterestMode = (int)InterestModeEnum.标的期初全价,
+                InterestRateDefault = Spread,
+                InterestPrincipalFix = Notional,
+                PosiStartDate = StartDate, PosiMatuirityDate = StartDate.AddYears(1),
+                IsInitial = true, Invalid = false,
+                InterestType = (int)InterestTypeEnum.复利,
+                IsAnnualized = true, interest_rest_days = 7, interest_rule = 0,
+                FloatRateUnderlyingCode = null,
+                InterestSwapInterval = "[]"
+            };
+        }
+
+        private static List<(DateTime, decimal)> Segments()
+            => new()
+            {
+                (StartDate, Spread),
+                (StartDate.AddDays(7), Spread),
+                (StartDate.AddDays(14), Spread),
+            };
+
+        private sealed class StubSvc : SwapDealService
+        {
+            public StubSvc() : base(new OptUserInfo(0, nameof(CompoundCarryInTest), OptUserFrom.UnitTest)) { }
+        }
+
+        [TestMethod]
+        public void carryIn_默认省略_与旧逐日循环一致()
+        {
+            var position = CreatePosition();
+            var flowEvent = new swap_flow_event { InterestRate = Spread };
+
+            decimal oldI = 0, oldTd = 0;
+            new StubSvc().CalcDailyCompoundInterest(EndDate, position, Notional, flowEvent,
+                AnnualDays, 0m, 1m, true, false, ref oldI, ref oldTd);
+
+            // 省略 carryInInterest（默认 0）
+            var r1 = CompoundInterestAccrual.AccruePeriod(
+                notional: Notional, segmentRates: Segments(),
+                startDate: StartDate, endDate: EndDate,
+                boundary: AccrualBoundary.StartOnly, annualDays: AnnualDays, isAnnualized: true,
+                resetCarryInterest: 0m, realizedInterest: 0m, unwindFraction: 1m,
+                finalBasis: out _);
+            // 显式传 0 与省略等价
+            var r2 = CompoundInterestAccrual.AccruePeriod(
+                notional: Notional, segmentRates: Segments(),
+                startDate: StartDate, endDate: EndDate,
+                boundary: AccrualBoundary.StartOnly, annualDays: AnnualDays, isAnnualized: true,
+                resetCarryInterest: 0m, realizedInterest: 0m, unwindFraction: 1m,
+                finalBasis: out _, trace: null, carryInInterest: 0m);
+
+            Assert.AreEqual((double)oldI, (double)r1.Accrued, 0.0000001, "省略 carryIn 与旧实现一致");
+            Assert.AreEqual((double)r1.Accrued, (double)r2.Accrued, 0.0000001, "省略与显式0一致");
+        }
+
+        [TestMethod]
+        public void carryIn_仅在首重置日起息_增量等于后续两段复利()
+        {
+            const decimal carryIn = 1_000_000m;
+
+            decimal Accrued(decimal c)
+                => CompoundInterestAccrual.AccruePeriod(
+                    notional: Notional, segmentRates: Segments(),
+                    startDate: StartDate, endDate: EndDate,
+                    boundary: AccrualBoundary.Both, annualDays: AnnualDays, isAnnualized: true,
+                    resetCarryInterest: 0m, realizedInterest: 0m, unwindFraction: 1m,
+                    finalBasis: out _, trace: null, carryInInterest: c).Accrued;
+
+            var delta = Accrued(carryIn) - Accrued(0m);
+
+            // Both 边界下三段各 7 天。carryIn 于 4/28（首个重置日）并入基数：
+            // 首段 [4/21,4/28] 不含 carryIn；其后两段 carryIn 自身起息且其首段利息再复利。
+            // 精确增量 = c×d + (c + c×d)×d = c×(2d + d²) = c×((1+d)² − 1)，d = 7天利率因子。
+            var d = Spread * 7m / AnnualDays;
+            var expected = carryIn * (2m * d + d * d);
+            Assert.AreEqual((double)expected, (double)delta, 0.001,
+                "carryIn 增量 = 首个重置日起息的两段复利，首段不含 carryIn");
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/Accrual/CompoundEodShadowTest.cs

@@ -7,8 +7,6 @@ using YLErp.DBModels;
 using YLErp.DBModels.Enums;
 using YLErp.Modules.SwapModule;
 using YLErp.Modules.SwapModule.Accrual;
-using YLErp.Derivatives.Interest;
-using YLErp.Core.Interest;
 
 namespace UnitTestProject.Modules.SwapModule.Accrual
 {
@@ -92,7 +90,7 @@ namespace UnitTestProject.Modules.SwapModule.Accrual
             decimal oldInterest = 0, oldTd = 0;
             var svc = new StubSvc();
             svc.CalcDailyCompoundInterestByEod(preEod, EodDate, TradeDate, position,
-                Notional, Notional, flowEvent, AnnualDays, false, 0m, 1m,
+                Notional, Notional, flowEvent, AnnualDays, 0m, 1m,
                 ref oldInterest, ref oldTd);
 
             // 新方法
@@ -125,7 +123,7 @@ namespace UnitTestProject.Modules.SwapModule.Accrual
             decimal oldInterest = 0, oldTd = 0;
             var svc = new StubSvc();
             svc.CalcDailyCompoundInterestByEod(preEod, nonResetDate, TradeDate, position,
-                Notional, Notional, flowEvent, AnnualDays, false, 0m, 1m,
+                Notional, Notional, flowEvent, AnnualDays, 0m, 1m,
                 ref oldInterest, ref oldTd);
 
             // 新方法

UnitTestProject/Modules/SwapModule/Accrual/CompoundPeriodShadowTest.cs

@@ -1,6 +1,5 @@
 using Newtonsoft.Json;
 using YLErp;
-using YLErp.Derivatives.Interest;
 using YLErp.Modules.SwapModule;
 using YLErp.Modules.SwapModule.Accrual;
 
@@ -74,7 +73,7 @@ namespace UnitTestProject.Modules.SwapModule.Accrual
             decimal oldI = 0, oldTd = 0;
             var svc = new StubSvc();
             svc.CalcDailyCompoundInterest(EndDate, position, Notional, flowEvent,
-                AnnualDays, false, 0m, 1m, true, false,
+                AnnualDays, 0m, 1m, true, false,
                 ref oldI, ref oldTd);
 
             // 新方法：固定利率全段相同，分段点 = PosiStartDate + k×7
@@ -122,7 +121,7 @@ namespace UnitTestProject.Modules.SwapModule.Accrual
             decimal oldI = 0, oldTd = 0;
             var svc = new StubSvc();
             svc.CalcDailyCompoundInterest(EndDate, position, Notional * closePct, flowEvent,
-                AnnualDays, false, 0m, closePct, true, false,
+                AnnualDays, 0m, closePct, true, false,
                 ref oldI, ref oldTd, consumedInterest: consumed, resetCarryInterest: carry);
 
             // 新方法
@@ -166,7 +165,7 @@ namespace UnitTestProject.Modules.SwapModule.Accrual
             decimal oldI = 0, oldTd = 0;
             var svc = new StubSvc();
             svc.CalcDailyCompoundInterest(EndDate, position, Notional, flowEvent,
-                AnnualDays, false, 0m, 1m, true, true,
+                AnnualDays, 0m, 1m, true, true,
                 ref oldI, ref oldTd);
 
             // 新方法

UnitTestProject/Modules/SwapModule/Accrual/ContractReferenceCalc.cs

@@ -0,0 +1,72 @@
+namespace UnitTestProject.Modules.SwapModule.Accrual
+{
+    /// <summary>
+    /// 契约参考实现（确认书公式，TEST-MATRIX §8a）——全矩阵统一 oracle 供给。
+    ///
+    /// 【独立性约束·勿破坏】本类只实现确认书公式原文，禁止引用任何生产计息引擎类
+    /// （YLErp.Modules.SwapModule.Accrual.* / SwapDealService），否则 oracle 与被测对象同源，
+    /// 失去"独立参考"资格（oracle 分级第一级，见 TEST-MATRIX §7.4）。
+    ///
+    /// 确认书公式（国联民生收益互换确认书-现券/ETF 四份一致）：
+    ///   参考利率(绝对) = ∏[i=1..k] ( 1 + (FR007i + 利差) × di / 365 ) − 1
+    ///   结息额(平仓部分) = 实际平掉额 × 参考利率(绝对)
+    /// - k = 计息期包含的重置期个数；完整重置期 di = 重置频率(生产 7 天)，末段不足按实际日历日
+    /// - 重置期自计息期首日按重置频率依次推算；首个重置期始于计息期首日；末段收口到计息期最后一日
+    /// - 利率确定日 = 每个重置期首日(重置日)的上一个营业日，取该日 FR007
+    /// - 计息期 = 自起始日(含)至到期日(不含)——即算头不算尾 "10"（生产主力条款）
+    /// - 计息基准 A/365
+    ///
+    /// 营业日准则：本参考实现按周末近似（周六/周日非营业日）；法定节假日历由调用方通过
+    /// 取价委托自行吸收（如按确定日提供同一利率）。测试与生产参数对齐（§8）：重置 7 天 / 365。
+    /// </summary>
+    public static class ContractReferenceCalc
+    {
+        /// <summary>
+        /// 参考利率(绝对) = ∏(1 + (FR007i+利差)×di/annualDays) − 1。
+        /// </summary>
+        /// <param name="startDate">计息期首日（含）</param>
+        /// <param name="endDate">计息期末日（"10"不含/"11"含，由 calcLast 决定）</param>
+        /// <param name="resetDays">重置频率天数（生产 7）</param>
+        /// <param name="spread">利差（InterestRateDefault，如 +0.25% = 0.0025）</param>
+        /// <param name="fixing">取价委托：入参=利率确定日(重置日上一营业日)，返回该日 FR007</param>
+        /// <param name="calcFirst">算头（生产 "10"/"11" 为 true）</param>
+        /// <param name="calcLast">算尾（生产 "10" 为 false）</param>
+        /// <param name="annualDays">计息基准（生产 365）</param>
+        public static decimal ReferenceRateAbsolute(
+            DateTime startDate, DateTime endDate,
+            int resetDays, decimal spread,
+            Func<DateTime, decimal> fixing,
+            bool calcFirst = true, bool calcLast = false,
+            int annualDays = 365)
+        {
+            var totalDays = (endDate - startDate).Days + (calcFirst ? 0 : -1) + (calcLast ? 1 : 0);
+            if (totalDays <= 0) return 0m;
+
+            decimal factor = 1m;
+            var resetDate = startDate;          // 首个重置期始于计息期首日
+            var remaining = totalDays;
+            while (remaining > 0)
+            {
+                var di = Math.Min(resetDays, remaining);   // 完整期 di=resetDays，末段按实际日历日
+                var fixingDate = PreviousBusinessDay(resetDate);
+                var allIn = fixing(fixingDate) + spread;
+                factor *= 1m + allIn * di / annualDays;
+                remaining -= di;
+                resetDate = resetDate.AddDays(di);
+            }
+            return factor - 1m;
+        }
+
+        /// <summary>结息额（平仓部分）= 实际平掉额 × 参考利率(绝对)。</summary>
+        public static decimal ClosedInterest(decimal closedNotional, decimal referenceRate)
+            => closedNotional * referenceRate;
+
+        /// <summary>利率确定日 = 重置日的上一营业日（周末近似）。</summary>
+        public static DateTime PreviousBusinessDay(DateTime date)
+        {
+            do { date = date.AddDays(-1); }
+            while (date.DayOfWeek is DayOfWeek.Saturday or DayOfWeek.Sunday);
+            return date;
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/Accrual/ContractReferenceOracleTest.cs

@@ -0,0 +1,196 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Newtonsoft.Json;
+using YLErp;
+using YLErp.DBModels.Enums;
+using YLErp.Modules.SwapModule;
+
+namespace UnitTestProject.Modules.SwapModule.Accrual
+{
+    /// <summary>
+    /// 契约参考实现 oracle 落地（TEST-MATRIX §7 第 5 步）——两段式：
+    ///
+    /// ① oracle 自验证：手算锚点直接钉 ContractReferenceCalc（独立于生产引擎，公式正确性
+    ///    由手算锚点保证——真实规模 5000 万/2.05%/90 天 与玩具 4 天。Excel 金标准期望值亦符合本公式(2026-08-18 复核)。
+    /// ② 引擎对照：主力族（mode9 标的期初全价 / mode2 合约名义本金规模 × FR007 × 复利 × "10"）
+    ///    盘中 T+0 部分平仓 30%，GetInterests 重放结果 必须 == 契约 oracle（容差 0.01 元，§7.4）。
+    ///    这是本矩阵第一个"契约公式独立参考实现"级 oracle 的引擎对照用例（此前仅有 Excel 手算/工单值）。
+    ///
+    /// 引擎对照用恒定 FR007 利率表——刻意免疫"利率确定日=重置日上一营业日 vs 当日"的取价日
+    /// 约定差异（任何确定日取到的都是同一利率），单独验证 ∏ 公式/重置期切分/算头不算尾/末段收口；
+    /// 取价日维度（E 维，66a97e03）由变利率用例在 oracle 侧钉住（§①第 4 例），引擎侧后续补。
+    ///
+    /// 坐标登记：mode9/mode2 × 复利 × "10" × T+0 × 部分平仓30% × B=跨12个完整重置期+末段 × E=恒定利率。
+    /// </summary>
+    [TestClass]
+    public class ContractReferenceOracleTest
+    {
+        // ── 生产参数（TEST-MATRIX §8：7 天重置 / A365 / 真实点差 +0.25% / 千万级名义）──
+        private const decimal Spread = 0.0025m;        // 点差 +0.25%（确认书真实点差）
+        private const decimal Fr007 = 0.018m;          // FR007 示意水平 1.8% → all-in 2.05%
+        private const int ResetDays = 7;
+        private const int AnnualDaysConst = 365;
+        private const decimal Notional = 50_000_000m;  // 名义 5000 万
+        private const decimal ClosedNotional = 15_000_000m; // 平掉 30% = 1500 万
+        private const decimal ClosePercent = 0.3m;
+
+        private static readonly DateTime StartDate = new(2026, 4, 27);  // 周一,起息日
+        private static readonly DateTime Unwind90 = new(2026, 7, 26);   // 90 天 = 12×7 + 6 末段
+        private static readonly DateTime Unwind89 = new(2026, 7, 25);   // 89 天 = 12×7 + 5 末段
+        private static readonly DateTime ExerciseDate = new(2027, 4, 27);
+
+        #region ① oracle 自验证（手算锚点）
+
+        [TestMethod]
+        public void 契约公式_恒定利率_90天12整期加6天末段_等于手算()
+        {
+            var rate = ContractReferenceCalc.ReferenceRateAbsolute(
+                StartDate, Unwind90, ResetDays, Spread, _ => Fr007,
+                calcFirst: true, calcLast: false, annualDays: AnnualDaysConst);
+            // 手算：(1+0.0205×7/365)^12 × (1+0.0205×6/365) − 1（python 高精度复核）
+            Assert.AreEqual(0.0050666026m, rate, 0.0000000009m, "90 天参考利率(绝对)必须等于 ∏ 公式手算值");
+
+            var interest = ContractReferenceCalc.ClosedInterest(ClosedNotional, rate);
+            Assert.AreEqual(75999.04m, interest, 0.01m, "平掉 1500 万 × 参考利率 = 确认书公式应结值");
+        }
+
+        [TestMethod]
+        public void 契约公式_恒定利率_89天末段5天_等于手算()
+        {
+            var rate = ContractReferenceCalc.ReferenceRateAbsolute(
+                StartDate, Unwind89, ResetDays, Spread, _ => Fr007,
+                calcFirst: true, calcLast: false, annualDays: AnnualDaysConst);
+            Assert.AreEqual(0.0050101727m, rate, 0.0000000009m, "89 天参考利率(绝对)手算值");
+
+            var interest = ContractReferenceCalc.ClosedInterest(ClosedNotional, rate);
+            Assert.AreEqual(75152.59m, interest, 0.01m);
+        }
+
+        [TestMethod]
+        public void 契约公式_玩具参数_算头算尾4天_等于手算锚点()
+        {
+            // 手算：300×[(1+0.011×3/365)×(1+0.011×1/365)−1] = 0.0361652（重置 3 天,利差 1%,FR 0.1%）
+            var rate = ContractReferenceCalc.ReferenceRateAbsolute(
+                new DateTime(2026, 4, 27), new DateTime(2026, 4, 30), resetDays: 3,
+                spread: 0.01m, fixing: _ => 0.001m,
+                calcFirst: true, calcLast: true, annualDays: 365);
+            var interest = ContractReferenceCalc.ClosedInterest(300m, rate);
+            Assert.AreEqual(0.0361652m, interest, 0.000001m);
+        }
+
+        [TestMethod]
+        public void 契约公式_分段变利率_利率确定日为重置日上一营业日()
+        {
+            // 计息期 [5/4(一), 5/15(五)) "10" → 11 天 = 7 + 4 末段；重置日 5/4、5/11（均为周一）
+            // 契约：利率确定日 = 重置日上一营业日 → 5/1(五)、5/8(五)
+            Assert.AreEqual(new DateTime(2026, 5, 1), ContractReferenceCalc.PreviousBusinessDay(new DateTime(2026, 5, 4)), "5/4(一)的上一营业日是 5/1(五)");
+            Assert.AreEqual(new DateTime(2026, 5, 8), ContractReferenceCalc.PreviousBusinessDay(new DateTime(2026, 5, 11)), "5/11(一)的上一营业日是 5/8(五)");
+
+            var fixings = new Dictionary<DateTime, decimal>
+            {
+                [new DateTime(2026, 5, 1)] = 0.02m,   // 第一段 FR007 2.0% → all-in 2.25%
+                [new DateTime(2026, 5, 8)] = 0.03m,   // 第二段 FR007 3.0% → all-in 3.25%
+            };
+            var rate = ContractReferenceCalc.ReferenceRateAbsolute(
+                new DateTime(2026, 5, 4), new DateTime(2026, 5, 15), ResetDays, Spread,
+                d => fixings[d], calcFirst: true, calcLast: false, annualDays: AnnualDaysConst);
+            // 手算：(1+0.0225×7/365)×(1+0.0325×4/365)−1 = 0.0007878249
+            Assert.AreEqual(0.0007878249m, rate, 0.0000000009m,
+                "分段变利率下每段必须用各自确定日的 FR007（E 维：取价日=重置日上一营业日）");
+        }
+
+        #endregion
+
+        #region ② 引擎对照（恒定 FR007，免疫取价日约定）
+
+        private sealed class StubSwapDealService : SwapDealService
+        {
+            public StubSwapDealService() : base(
+                new OptUserInfo(0, nameof(ContractReferenceOracleTest), OptUserFrom.UnitTest)) { }
+
+            protected override bool TryGetFloatRate(DateTime valueDate, string underlyingCode, out double rate)
+            {
+                if (!string.Equals(underlyingCode, "FR007", StringComparison.OrdinalIgnoreCase)) { rate = 0; return false; }
+                rate = (double)Fr007;
+                return true;
+            }
+
+            /// <summary>fresh 重放无历史已结利息，覆写掉 DB 查询（本场景语义即 0）。</summary>
+            public override decimal GetConsumedInterest(int tradeId, long positionId, DateTime beforeDate) => 0m;
+        }
+
+        private static trade CreateTrade()
+        {
+            var extend = new trade_extend
+            {
+                TradeId = 1,
+                ExtendJson = JsonConvert.SerializeObject(new TradeExtendJson
+                {
+                    AnnualDays = AnnualDaysConst,
+                    InterestCalcMode = "10",  // 算头不算尾（生产主力条款）
+                    SettlementRules = 0
+                })
+            };
+            return new trade
+            {
+                id = 1, TradeNumber = "UT-CONTRACT-REF-ORACLE", ClientId = 999998,
+                TradeType = "收益互换", TradeDate = StartDate, StartDate = StartDate,
+                ExerciseDate = ExerciseDate, TradeStatus = "确认成交", ValidState = "Valid",
+                trade_extend = extend
+            };
+        }
+
+        private static swap_position CreatePosition(InterestModeEnum mode) =>
+            new()
+            {
+                id = 1001, SwapTradeId = 1, PositionType = (int)PositionTypeFlag.Unknown,
+                InterestDirection = (int)SwapDirectionEnum.收取, InterestMode = (int)mode,
+                InterestRateDefault = Spread, InterestPrincipalFix = Notional,
+                PosiStartDate = StartDate, PosiMatuirityDate = ExerciseDate,
+                IsInitial = true, Invalid = false, InterestType = (int)InterestTypeEnum.复利,
+                IsAnnualized = true, interest_rest_days = ResetDays, interest_rule = 0,
+                FloatRateUnderlyingCode = "FR007",
+                InterestSwapInterval = JsonConvert.SerializeObject(
+                    new List<IntervalModel> { new() { Date = ExerciseDate, Rate = Spread, Settlement = 0 } })
+            };
+
+        /// <summary>引擎盘中重放（T+0 fresh 持仓，T0 形状）vs 契约 oracle，容差 0.01 元。</summary>
+        private static void AssertEngineMatchesOracle(
+            InterestModeEnum mode, DateTime unwindDate, decimal posi, decimal closePosi,
+            decimal expectedOracleInterest)
+        {
+            var td = CreateTrade();
+            var position = CreatePosition(mode);
+            var interests = new StubSwapDealService().GetInterests(
+                td, td.trade_extend, unwindDate, unwindDate,
+                new List<eod_swap_position>(), new List<swap_position> { position },
+                posi, closePosi, ClosePercent,
+                (int)SwapEventTypeEnum.平仓,
+                tdClose: false, orginPv: posi, add: false, settment: false, newCalcLast: false, closeList: null);
+
+            Assert.AreEqual(1, interests.Count);
+            Assert.IsTrue(Math.Abs(interests[0].InterestAmount - expectedOracleInterest) <= 0.01m,
+                $"mode={mode} 引擎重放 {interests[0].InterestAmount} vs 契约 oracle {expectedOracleInterest}，" +
+                $"diff={interests[0].InterestAmount - expectedOracleInterest}——引擎偏离确认书公式（TEST-MATRIX §8a）");
+        }
+
+        private static decimal OracleInterest(DateTime unwindDate) =>
+            ContractReferenceCalc.ClosedInterest(ClosedNotional,
+                ContractReferenceCalc.ReferenceRateAbsolute(
+                    StartDate, unwindDate, ResetDays, Spread, _ => Fr007,
+                    calcFirst: true, calcLast: false, annualDays: AnnualDaysConst));
+
+        [TestMethod]
+        public void 引擎_mode9_复利FR007_10_部分平仓30_90天_等于契约oracle()
+            => AssertEngineMatchesOracle(InterestModeEnum.标的期初全价, Unwind90, Notional, Notional, OracleInterest(Unwind90));
+
+        [TestMethod]
+        public void 引擎_mode9_复利FR007_10_部分平仓30_89天_等于契约oracle()
+            => AssertEngineMatchesOracle(InterestModeEnum.标的期初全价, Unwind89, Notional, Notional, OracleInterest(Unwind89));
+
+        [TestMethod]
+        public void 引擎_mode2_复利FR007_10_部分平仓30_显式平掉额_等于契约oracle()
+            => AssertEngineMatchesOracle(InterestModeEnum.合约名义本金规模, Unwind90, Notional, ClosedNotional, OracleInterest(Unwind90));
+
+        #endregion
+    }
+}

UnitTestProject/Modules/SwapModule/Accrual/SimplePeriodShadowTest.cs

@@ -100,7 +100,7 @@ namespace UnitTestProject.Modules.SwapModule.Accrual
             decimal oldI = 0, oldTd = 0;
             var svc = new StubSvc();
             svc.CalcDailySimpleInterest(preEod, EndDate, position, Notional, flowEvent,
-                AnnualDays, false, 0m, 1m, Notional, true, false, ref oldI, ref oldTd);
+                AnnualDays, 0m, 1m, Notional, true, false, ref oldI, ref oldTd);
 
             // 新方法：固定利率全段相同
             // 旧代码差分: dynomicPrincipal = preEod.TdInterestPrincipal(=0) + posiPrincipal - orginPv = 0
@@ -146,7 +146,7 @@ namespace UnitTestProject.Modules.SwapModule.Accrual
             decimal oldI = 0, oldTd = 0;
             var svc = new StubSvc();
             svc.CalcDailySimpleInterest(preEod, EndDate, position, Notional, flowEvent,
-                AnnualDays, false, 0m, 0.5m, Notional, true, false, ref oldI, ref oldTd);
+                AnnualDays, 0m, 0.5m, Notional, true, false, ref oldI, ref oldTd);
 
             // 新方法
             // 差分本金 = preEod.TdInterestPrincipal + posiPrincipal - orginPv
@@ -200,7 +200,7 @@ namespace UnitTestProject.Modules.SwapModule.Accrual
             decimal oldI = 0, oldTd = 0;
             var svc = new FloatStubSvc(new StubIndexFixer(fixingAtReset));
             svc.CalcDailySimpleInterest(preEod, EndDate, position, Notional, flowEvent,
-                AnnualDays, false, floatRateIn, closePct, Notional, true, false, ref oldI, ref oldTd);
+                AnnualDays, floatRateIn, closePct, Notional, true, false, ref oldI, ref oldTd);
 
             // 新方法：手算 segmentRates（对齐旧代码取价循环的逻辑）
             // 4/21 <= preEodDate(4/30) → 跳过取价，currentFloat 保持入参 floatRateIn

UnitTestProject/Modules/SwapModule/Accrual/SwapInterest_CompoundInArrears_RolloverTimingTests.cs

@@ -1,144 +0,0 @@
-using System.Text.RegularExpressions;
-using YLErp.Core.Interest;
-using YLErp.Derivatives.Interest;
-
-namespace UnitTestProject.Modules.SwapModule.Accrual
-{
-    /// <summary>
-    /// 聚焦测试：AccrueCompoundInArrears 的「本金滚存时机」必须符合确认书规定。
-    /// 核心不变量：本金只允许在重置日/段末滚入利息，非重置日不得资本化。
-    ///
-    /// 与原草稿的关键区别：本版<b>直接通过 AccrualTrace 断言不变量</b>。
-    /// 真实实现在每次段末会发出 ROLLOVER 事件并记录 newBasis（见 SwapInterest.cs:215 /
-    /// AccrualTrace.Rollover），因此「非重置日是否发生资本化」是可程序化验证的，
-    /// 无需仅靠总利息回归来保护（原草稿的自我怀疑"无法断言计息基数"已不成立）。
-    /// </summary>
-    [TestClass]
-    public class SwapInterest_CompoundInArrears_RolloverTimingTests
-    {
-        private const int FundingLegPrecision = 12;
-        private const int AnnualDays = 365;
-
-        /// <summary>
-        /// 场景：14天窗口，第8天(01-08)重置一次，利率恒定 3.65%（日利率 0.01%）。
-        /// 验证：
-        ///  (1) 总利息 = 1400.49（第1期700 + 第2期700.49）；
-        ///  (2) ROLLOVER 仅发生在重置日(01-08)与窗口终点(01-15)，非重置日(如01-03)绝不滚存；
-        ///  (3) 重置日 ROLLOVER 的 newBasis = 原始本金 + 前7天利息 = 1,000,700，
-        ///      证明第1段计息基数恒为原始本金、段内未提前资本化。
-        /// </summary>
-        [TestMethod]
-        public void InterestPrincipal_ShouldRollOnlyOnResetDays_NotOnNonResetDays()
-        {
-            var startDate = new DateTime(2026, 1, 1);
-            var endDate = new DateTime(2026, 1, 15);
-
-            var principal = 1_000_000m;
-            var rate = 0.0365m;
-            var resetDates = new List<DateTime> { new DateTime(2026, 1, 8) };
-            var trace = new AccrualTrace();
-            var ctx = new AccrualContext(AnnualDays, FundingLegPrecision, trace);
-
-            var result = SwapInterest.AccrueCompoundInArrears(
-                ctx,
-                principal,
-                rate,
-                startDate,
-                endDate,
-                AccrualBoundary.Both,
-                resetDates);
-
-            Assert.AreEqual(1400.49m, Math.Round(result.Accrued, 2));
-
-            var rolloverDates = trace.Entries
-                .Where(e => e.Step == AccrualTraceEvent.Rollover)
-                .Select(e => e.Date)
-                .ToList();
-
-            var allowed = resetDates.Concat(new[] { endDate }).OrderBy(d => d).ToList();
-            CollectionAssert.AreEqual(allowed, rolloverDates.OrderBy(d => d).ToList());
-
-            Assert.IsFalse(rolloverDates.Contains(new DateTime(2026, 1, 3)),
-                "非重置日发生了本金滚存，违反确认书规定");
-
-            var resetRollover = trace.Entries
-                .First(e => e.Step == AccrualTraceEvent.Rollover && e.Date == new DateTime(2026, 1, 8));
-            var newBasis = ParseNewBasis(resetRollover.Line);
-            Assert.AreEqual(principal + 700m, newBasis,
-                "重置日滚入的本金应为原始本金 + 前段利息，证明段内未提前资本化");
-        }
-
-        /// <summary>
-        /// 极端场景：startDate = endDate（1天），无重置日。
-        /// 期望利息 = 本金 × 日利率 = 1,000,000 × 0.0365/365 = 100。
-        /// 且唯一 ROLLOVER 必须落在窗口终点（=startDate），无任何内部重置滚存。
-        /// </summary>
-        [TestMethod]
-        public void SingleDay_ShouldNotRollInterest_NoResetDay()
-        {
-            var date = new DateTime(2026, 1, 1);
-            var principal = 1_000_000m;
-            var rate = 0.0365m;
-            var trace = new AccrualTrace();
-            var ctx = new AccrualContext(AnnualDays, FundingLegPrecision, trace);
-
-            var result = SwapInterest.AccrueCompoundInArrears(
-                ctx,
-                principal,
-                rate,
-                date,
-                date,
-                AccrualBoundary.Both);
-
-            Assert.AreEqual(100m, Math.Round(result.Accrued, 2));
-
-            var rolloverDates = trace.Entries
-                .Where(e => e.Step == AccrualTraceEvent.Rollover)
-                .Select(e => e.Date)
-                .ToList();
-            CollectionAssert.AreEqual(new[] { date }, rolloverDates.ToArray());
-        }
-
-        /// <summary>
-        /// 段内无重置日：验证整段等同于单利，且不发生任何内部滚存。
-        /// 6天窗口(01-01..01-06)在7天重置周期内，Both 边界含两端 = 6 个计息日，
-        /// 期望利息 = 本金 × 日利率 × 6 = 600。
-        /// </summary>
-        [TestMethod]
-        public void WithinPeriod_NoRollover_ShouldMatchSimpleInterest()
-        {
-            var startDate = new DateTime(2026, 1, 1);
-            var endDate = new DateTime(2026, 1, 6);
-            var principal = 1_000_000m;
-            var rate = 0.0365m;
-            var trace = new AccrualTrace();
-            var ctx = new AccrualContext(AnnualDays, FundingLegPrecision, trace);
-
-            var result = SwapInterest.AccrueCompoundInArrears(
-                ctx,
-                principal,
-                rate,
-                startDate,
-                endDate,
-                AccrualBoundary.Both);
-
-            // 计息天数必须用边界感知的 AccrualDays，不能拿 (end-start).Days（会少算1天）
-            var days = SwapInterest.AccrualDays(startDate, endDate, AccrualBoundary.Both); // = 6
-            var expected = Math.Round(principal * rate * days / AnnualDays, FundingLegPrecision, MidpointRounding.AwayFromZero);
-            Assert.AreEqual(expected, Math.Round(result.Accrued, 10));
-
-            var rolloverDates = trace.Entries
-                .Where(e => e.Step == AccrualTraceEvent.Rollover)
-                .Select(e => e.Date)
-                .ToList();
-            CollectionAssert.AreEqual(new[] { endDate }, rolloverDates.ToArray());
-        }
-
-        private static decimal ParseNewBasis(string line)
-        {
-            var m = Regex.Match(line, @"newBasis=([0-9.]+)");
-            Assert.IsTrue(m.Success, $"ROLLOVER 行缺少 newBasis：{line}");
-            return decimal.Parse(m.Groups[1].Value);
-        }
-    }
-}

UnitTestProject/Modules/SwapModule/AutoUnwindMultiPartialDividendTest.cs

@@ -0,0 +1,69 @@
+using YLErp.Modules.EodModule;
+
+namespace YLErp.Modules.SwapModule
+{
+    /// <summary>
+    /// 自动平仓路径（AuotoSwapUnwind → EnrichDividendIn, SwapDealService.cs:1668-1687）多次部分平仓是否多算的实证。
+    /// EnrichDividendIn 核心：GetBondPayments(td.StartDate, closeDate) × unwindQty（当次平仓量，非剩余持仓）。
+    /// 本测试直接驱动真实 BondPaymentService.CalcPayment（与 EnrichDividendIn 等价：GetBondPayments 按 reg_date 过滤 + CalcPayment × unwindQty），
+    /// 内存注入 reg_date 数据，不连库。完整 AuotoSwapUnwind 链路因 EnrichDividendIn 直接 new BondPaymentService 查库、无内存 seam 注入点，故用计算核心等价验证。
+    ///
+    /// 结论验证：多次跨越登记日的部分平仓，每次 × 当次平仓量 → 总额 = 各批按登记日持有 × 平仓量分摊，
+    /// 不自洽多算、不重复计入重叠窗口。
+    /// （纠正此前"从建仓日重算导致重复计入"的推断：该推断误以为 CalcPayment 乘剩余持仓，实际乘当次 unwindQty。）
+    /// </summary>
+    [TestClass]
+    public class AutoUnwindMultiPartialDividendTest
+    {
+        private const string BondCode = "230004.IB";
+        private static readonly DateTime StartDate = new(2026, 1, 5);
+        private static readonly DateTime Reg1 = new(2026, 5, 15); // 每百元付息 10
+        private static readonly DateTime Reg2 = new(2026, 6, 15); // 每百元付息 12
+
+        private sealed class BridgeBps : BondPaymentService
+        {
+            public BridgeBps(OptUserInfo u) : base(u) { }
+            protected override IQueryable<BondPayment> QueryBondPayments(string underlyingCode)
+                => new List<BondPayment>
+                {
+                    new BondPayment { underlyingCode = BondCode, reg_date = Reg1, payment_date_pl = Reg1, payment_date = Reg1, payment_interest = 10m },
+                    new BondPayment { underlyingCode = BondCode, reg_date = Reg2, payment_date_pl = Reg2, payment_date = Reg2, payment_interest = 12m },
+                }.Where(x => x.underlyingCode == underlyingCode).AsQueryable();
+        }
+
+        // 等价于 EnrichDividendIn 的数值核心：GetBondPayments(StartDate, closeDate) × unwindQty
+        private static decimal EnrichOnce(DateTime closeDate, decimal unwindQty)
+        {
+            var svc = new BridgeBps(OptUserInfo.UnitTestUser);
+            return svc.CalcPayment(BondCode, StartDate, closeDate, unwindQty, 1, 1);
+        }
+
+        [TestMethod]
+        public void 多次部分平仓_自动路径总额按登记日持仓分摊_不自洽多算()
+        {
+            decimal totalFace = 10_000m;        // 总面额 1 万元
+            decimal halfFace = totalFace / 2m;  // 每次平一半
+
+            // 第一次 5/20 平一半：窗口(Start,5/20] 仅含 reg1 → 10 × 5000/100 = 500
+            var d1 = EnrichOnce(new DateTime(2026, 5, 20), halfFace);
+            // 第二次 6/20 平一半：窗口(Start,6/20] 含 reg1+reg2 → (10+12) × 5000/100 = 1100
+            var d2 = EnrichOnce(new DateTime(2026, 6, 20), halfFace);
+            var total = d1 + d2;
+
+            // 经济应得（登记日持有规则）：
+            //   第一批5000元：5/15持有✓(10)、6/15未持有✗ → 10×5000/100 = 500
+            //   第二批5000元：5/15持有✓(10)、6/15持有✓(12) → 22×5000/100 = 1100
+            decimal expected = 10m * halfFace / 100m + (10m + 12m) * halfFace / 100m;
+
+            Assert.AreEqual(500m, d1, 0.001m, "第一次(5/20)只含 reg1 = 500");
+            Assert.AreEqual(1100m, d2, 0.001m, "第二次(6/20)含 reg1+reg2 = 1100");
+            Assert.AreEqual(expected, total, 0.001m,
+                "两次部分平仓总额 = 按登记日持有×平仓量分摊的应得值，重叠窗口不重复计同量（纠正：乘当次 unwindQty 而非剩余持仓）");
+
+            // 反证：若手动路径口径（第一次平仓即给全量待实现 = 两次分红×总面额）会多算
+            decimal manualFullIfFirst = (10m + 12m) * totalFace / 100m; // 2200
+            Assert.IsTrue(manualFullIfFirst > total,
+                "反证：手动全量落袋口径(2200) > 自动分摊口径(1600)，多算方是手动路径而非自动路径");
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/BondTrsAutoSwapScenarioTest.cs

@@ -134,6 +134,17 @@ namespace YLErp.Modules.SwapModule
                 return new swap_event { id = SwapEvents.Count };
             }
 
+            /// <summary>
+            /// 捕获 SaveAutoSwapDeal 落库的 flow_event（生产写 DbContext.swap_flow_event）。
+            /// 同步到 PersistedFlowEvents 供 AS_009/010/011 断言；基类 FlowEvents 仍由它填充，
+            /// 供 GetConsumedInterest 真实计算已结利息。
+            /// </summary>
+            protected override void PersistFlowEvent(swap_flow_event flowEvent)
+            {
+                base.PersistFlowEvent(flowEvent);
+                PersistedFlowEvents.Add(flowEvent);
+            }
+
             /// <summary>
             /// 利息腿金额直接给定（付息金额），避免把 GetInterests 的计息细节混入本用例——
             /// 本文件关注的是「自动互换是否触发 / 几条 / 资金发生日 / 金额量级」，
@@ -144,9 +155,9 @@ namespace YLErp.Modules.SwapModule
             protected override List<swap_flow_event> CalcSwapInterests(
                 trade td, trade_extend tradeExtend, DateTime valueDate, DateTime unwindDate,
                 List<eod_swap_position> eodPositions, List<swap_position> positions,
-                decimal posiNotionalValue, decimal posiLongNotionalValue, decimal posiShortNotionalValue,
-                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose, bool needPrice,
-                decimal grossPrice, decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
+                decimal posiNotionalValue,
+                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose,
+                decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
                 List<swap_flow_event> closeList = null)
             {
                 return positions.Select(p => new swap_flow_event

UnitTestProject/Modules/SwapModule/ConsumedInterestScenarioTest.cs

@@ -125,8 +125,8 @@ namespace YLErp.Modules.SwapModule
             var position = CreateCompoundPosition();
             var interests = service.GetInterests(td, td.trade_extend, unwindDate, unwindDate,
                 new List<eod_swap_position>(), new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, closePercent,
-                (int)SwapEventTypeEnum.平仓, false, false, Principal, Principal,
+                Principal, Principal, closePercent,
+                (int)SwapEventTypeEnum.平仓, false, Principal,
                 add: false, settment: false, newCalcLast: false);
             Assert.AreEqual(1, interests.Count);
             return interests[0];
@@ -273,45 +273,28 @@ namespace YLErp.Modules.SwapModule
         }
 
         // ================================================================
-        // 场景7：复现"平仓日=重置日 + calcLast=false → 重置日跳过 FR007 取价"
+        // 场景7：平仓日=重置日 + calcLast=false 的事件利率口径（EQD-6968 自洽化后）
         // ================================================================
 
         /// <summary>
-        /// [CI_007] 平仓日恰好是重置日时，calcLast=false 不应导致该重置日的 FR007 取价被跳过
+        /// [CI_007] 平仓日=重置日 + calcLast=false：排除日不取价，事件利率=末段已消费利率（确定性）
         /// ----------------------------------------------------------------
-        /// 背景(GLMS-JIATT-20260805 根因)：InterestCalcMode='10'(算头不算尾,calcLast=false)，
-        /// CalcDailyCompoundInterest 循环里 `if(!calcLast && accrueDate==endDate) continue` 会跳过平仓日当天。
-        /// 若平仓日恰好是重置日(i%period==0)，这个跳过会让"重置日取新FR007"的代码块永远不执行，
-        /// 沿用上一个重置周期的旧利率。
+        /// 历史(GLMS-JIATT-20260805)：原缺陷是重置日取价被 calcLast 跳过 → flowEvent.FloatRate 停留旧值
+        /// → 落库后传染 EOD。当时的修复=排除日"有价则取新定盘"，事件利率因而取决于平仓时刻
+        /// （上午=旧/下午=新），与金额实际使用的利率脱钩。
         ///
-        /// 构造：PosiStartDate=4/27, ResetPeriod=3, InterestCalcMode='10'(calcLast=false)
-        ///   - FR007 按日期分段：5/3之前返回 rateOld=0.001，5/3及之后返回 rateNew=0.002
-        ///   - 对照A：平仓日=5/5(非重置日,9? 不: (5/5-4/27)=8, 8%3=2 非重置) → 不该取新值
-        ///   - 对照B：平仓日=5/6(重置日,(5/6-4/27)=9, 9%3=0)        → 应取新值 rateNew
+        /// EQD-6968 自洽化后的新契约：
+        ///   ① 已平部分：排除日一概不取价（有价也不取），事件 FloatRate=末段已消费利率（rateOld），
+        ///      与金额同源、与平仓时刻无关；
+        ///   ② 剩余持仓的新周期利率：由 EOD 快照"重置日再定盘"显式获取
+        ///      （InterestEodTailSnapshotTest.CloseOnly_平仓日为重置日_剩余持仓快照再定盘）。
         ///
-        /// 修复前：5/6 重置日被 calcLast 跳过 → 取到旧 rateOld → 与 5/5 相同
-        /// 修复后：5/6 重置日正常取价 → 取到 rateNew → 与 5/5 不同
-        /// ----------------------------------------------------------------
-        /// </summary>
-        /// <summary>
-        /// [CI_007] 平仓日恰好是重置日时，calcLast=false 不应导致该重置日的 FR007 取价被跳过
-        /// ----------------------------------------------------------------
-        /// 根因(GLMS-JIATT-20260805)：InterestCalcMode='10'(calcLast=false)，
-        /// CalcDailyCompoundInterest 循环 `if(!calcLast && accrueDate==endDate) continue` 跳过平仓日。
-        /// 若平仓日=重置日，取价代码块被跳过 → flowEvent.FloatRate 停留旧值 → 落库后传染 EOD。
-        ///
-        /// 构造(避开周末，period=7)：
-        ///   PosiStartDate=4/27(周一), period=7, interest_rule=0, InterestCalcMode='10'
-        ///   重置日：i=0→4/27(周一), i=7→5/4(周一,工作日)
-        ///   平仓日=5/4(=重置日=endDate)
-        ///   FR007 分界：rateDate>=5/4 返回 rateNew，否则 rateOld
-        ///
-        /// 修复前：i=7(5/4)被 calcLast 跳过 → FloatRate=rateOld(旧值)
-        /// 修复后：i=7(5/4)正常取价 → FloatRate=rateNew(新值)
+        /// 构造(避开周末，period=7)：PosiStartDate=6/1(周一), 平仓日=6/8(周一,重置日,7%7=0)；
+        /// FR007 分界：取价日>=6/8 返回 rateNew，否则 rateOld。
         /// ----------------------------------------------------------------
         /// </summary>
         [TestMethod]
-        public void CI_007_平仓日等于重置日_calcLast_false_仍应取新FR007()
+        public void CI_007_平仓日等于重置日_calcLast_false_事件利率为末段已消费利率()
         {
             const double rateOld = 0.001;
             const double rateNew = 0.002;
@@ -356,19 +339,21 @@ namespace YLErp.Modules.SwapModule
 
             var interests = ServiceByDate().GetInterests(td, td.trade_extend, unwindDate, unwindDate,
                 new List<eod_swap_position>(), new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, Principal, Principal,
+                Principal, Principal, 1m,
+                (int)SwapEventTypeEnum.平仓, false, Principal,
                 add: false, settment: false, newCalcLast: false);
 
             Assert.AreEqual(1, interests.Count);
             var result = interests[0];
             Console.WriteLine($"6/8(重置日,周一)平仓：FloatRate={result.FloatRate} Amount={result.InterestAmount:F6}");
-            Console.WriteLine($"  期望 FloatRate={rateNew}（6/8 重置日查询日=6/8工作日，应取新利率）");
+            Console.WriteLine($"  新口径期望 FloatRate={rateOld}（排除日不取价，事件利率=末段已消费利率）");
 
-            // 核心断言：6/8 是重置日，flowEvent.FloatRate 应反映新利率 rateNew
-            Assert.IsTrue(Math.Abs((result.FloatRate ?? 0) - (decimal)rateNew) < 0.0001m,
-                $"平仓日=重置日时 FloatRate 应={rateNew}（取到新利率）。" +
-                $"实际={result.FloatRate}，若={rateOld} 说明 calcLast=false 跳过了重置日取价（GLMS-JIATT-20260805 根因）");
+            // 核心断言（EQD-6968 自洽化契约）：排除日(不计息)一概不取价——即使 6/8 新定盘已发布，
+            // 事件 FloatRate 也必须是末段已消费利率 rateOld，与金额同源、与平仓时刻无关。
+            // 剩余持仓的新周期利率由 EOD 快照"重置日再定盘"显式获取（见 InterestEodTailSnapshotTest）。
+            Assert.IsTrue(Math.Abs((result.FloatRate ?? 0) - (decimal)rateOld) < 0.0001m,
+                $"排除日不取价：FloatRate 应=末段已消费利率 {rateOld}。实际={result.FloatRate}，" +
+                $"若={rateNew} 说明排除日仍在取价（旧口径：记录利率取决于平仓时刻）");
 
             var interestBeforeResetDate = Principal * (FixedRate + (decimal)rateOld) * 7m / AnnualDays;
             AssertDecimal(Principal + interestBeforeResetDate, result.InterestPrincipal,
@@ -420,16 +405,18 @@ namespace YLErp.Modules.SwapModule
 
             var result = service.GetInterests(td, td.trade_extend, resetDate, resetDate,
                 new List<eod_swap_position> { preEod }, new List<swap_position> { position },
-                remainingPrincipal, remainingPrincipal, 0m, remainingPrincipal, 1m,
-                (int)SwapEventTypeEnum.平仓, true, false, 0m, remainingPrincipal,
+                remainingPrincipal, remainingPrincipal, 1m,
+                (int)SwapEventTypeEnum.平仓, true, remainingPrincipal,
                 add: false, settment: false, newCalcLast: false).Single();
 
             var remainingInterest = previousInterest * remainingPrincipal / previousPrincipal;
             var expectedPrincipal = remainingPrincipal + remainingInterest;
-            var expectedDailyInterest = expectedPrincipal * (fixedRate + (decimal)newFloatRate) / AnnualDays;
             AssertDecimal(expectedPrincipal, result.InterestPrincipal);
-            AssertDecimal(expectedDailyInterest,
-                result.InterestPrincipal * (result.InterestRate + result.FloatRate.Value) / AnnualDays);
+            // EQD-6968 自洽化：排除日(平仓日=重置日)不取价，事件利率=末段已消费利率(旧)——与金额同源、
+            // 与平仓时刻无关。剩余持仓的新周期利率由 EOD 快照"重置日再定盘"显式获取
+            // （InterestEodTailSnapshotTest.CloseOnly_平仓日为重置日_剩余持仓快照再定盘）。
+            AssertDecimal((decimal)oldFloatRate, result.FloatRate.Value,
+                "排除日不取价：事件 FloatRate 应=末段已消费旧利率");
         }
 
         [TestMethod]
@@ -466,8 +453,8 @@ namespace YLErp.Modules.SwapModule
 
             var result = service.GetInterests(td, td.trade_extend, unwindDate, unwindDate,
                 new List<eod_swap_position> { preEod }, new List<swap_position> { position },
-                remainingPrincipal, remainingPrincipal, 0m, remainingPrincipal, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, 0m, remainingPrincipal,
+                remainingPrincipal, remainingPrincipal, 1m,
+                (int)SwapEventTypeEnum.平仓, false, remainingPrincipal,
                 add: false, settment: false, newCalcLast: false).Single();
 
             AssertDecimal(pendingInterest, result.InterestAmount,
@@ -509,7 +496,7 @@ namespace YLErp.Modules.SwapModule
             decimal tdInterestAmount = 0m;
 
             service.CalcDailyCompoundInterestByEod(preEod, resetDate, startDate, position,
-                principal, principal, flowEvent, AnnualDays, false, 0.013502m, 1m,
+                principal, principal, flowEvent, AnnualDays, 0.013502m, 1m,
                 ref interestAmount, ref tdInterestAmount);
 
             AssertDecimal(principal + pendingInterest, flowEvent.InterestPrincipal,

UnitTestProject/Modules/SwapModule/DealInterestsGoldenReplayTest.cs

@@ -47,7 +47,7 @@ namespace YLErp.Modules.SwapModule
             {
                 DealInterests(interestList, eodPositions, new List<eod_swap_position>(),
                     settleDate, td, new List<swap_flow_event>(), new List<swap_flow_event>(), null,
-                    posiLongNational, 0m, 0m, grossPrice, orginPv);
+                    posiLongNational + 0m, 0m, grossPrice, orginPv);
             }
         }
 

UnitTestProject/Modules/SwapModule/DealInterestsScenarioTest.cs

@@ -51,6 +51,8 @@ namespace YLErp.Modules.SwapModule
             public SwapDealService DealService { get; set; }
 
             public eod_swap_position LastInterestCalculationEodPosition { get; private set; }
+            public int LastEventType { get; set; }
+
 
             public StubEodPositionService() : base(nameof(DealInterestsScenarioTest))
             {
@@ -63,23 +65,25 @@ namespace YLErp.Modules.SwapModule
                 trade td, trade_extend tradeExtend,
                 DateTime valueDate, DateTime unwindDate,
                 List<eod_swap_position> eodPositions, List<swap_position> positions,
-                decimal posiNotionalValue, decimal posiLongNotionalValue, decimal posiShortNotionalValue,
+                decimal posiNotionalValue,
                 decimal closePosiNotionalValue, decimal closePrecent,
-                int eventType, bool tdClose, bool needPrice,
-                decimal grossPrice, decimal orginPv,
+                int eventType, bool tdClose,
+                decimal orginPv,
                 bool add = false, bool settment = true, bool newCalcLast = false,
                 List<swap_flow_event> closeList = null)
             {
                 LastInterestCalculationEodPosition = eodPositions.SingleOrDefault();
+                LastEventType = eventType;
+
                 if (AutoInterests != null)
                 {
                     return AutoInterests;
                 }
 
                 return (DealService ?? new SwapDealService(this)).GetInterests(td, tradeExtend, valueDate, unwindDate,
-                    eodPositions, positions, posiNotionalValue, posiLongNotionalValue, posiShortNotionalValue,
-                    closePosiNotionalValue, closePrecent, eventType, tdClose, needPrice,
-                    grossPrice, orginPv, add, settment, newCalcLast, closeList);
+                    eodPositions, positions, posiNotionalValue,
+                    closePosiNotionalValue, closePrecent, eventType, tdClose,
+                    orginPv, add, settment, newCalcLast, closeList);
             }
 
             // public 包装：让测试能调用 protected 方法
@@ -99,7 +103,7 @@ namespace YLErp.Modules.SwapModule
                 decimal orginPv = DealInterestsScenarioTest.Principal)
             {
                 SaveAutoEodInterestPosition(eodPayPosition, null, position, td, valueDate, interval,
-                    lastEodSwap, posiLongNotional, 0m, 1m, orginPv);
+                    lastEodSwap, posiLongNotional + 0m, 1m, orginPv);
                 return PersistedPositions.LastOrDefault();
             }
 
@@ -110,7 +114,7 @@ namespace YLErp.Modules.SwapModule
                 decimal closeNotional, bool autoSwap)
             {
                 SaveAutoEodWithCloseInterestPosition(eodPayPosition, null, position, td, valueDate, interval,
-                    posiLongNotional, posiShortNotional, flowEvents, closeNotional, autoSwap, 1m,
+                    posiLongNotional + posiShortNotional, flowEvents, closeNotional, autoSwap, 1m,
                     DealInterestsScenarioTest.Principal);
                 return PersistedPositions.LastOrDefault();
             }
@@ -121,7 +125,7 @@ namespace YLErp.Modules.SwapModule
                 decimal grossPrice, decimal orginPv)
             {
                 SaveEodInterestPositionCopy(eodPayPosition, null, valueDate, td, position, null,
-                    false, posiLongNotional, posiShortNotional, grossPrice, orginPv);
+                    false, posiLongNotional + posiShortNotional, grossPrice, orginPv);
                 return PersistedPositions.LastOrDefault();
             }
 
@@ -134,7 +138,7 @@ namespace YLErp.Modules.SwapModule
             {
                 DealInterests(interestList, eodPositions, new List<eod_swap_position>(),
                     settleDate, td, flowEvents, new List<swap_flow_event>(), null,
-                    posiLongNational, posiShortNational, closeNational, grossPrice, orginPv);
+                    posiLongNational + posiShortNational, closeNational, grossPrice, orginPv);
             }
         }
 
@@ -447,7 +451,7 @@ namespace YLErp.Modules.SwapModule
         /// <summary>
         /// [DI_BRANCH_001] 普通日（无互换无平仓无观察日）→ 走 copy 分支
         /// ---------------------------------------------------------------
-        /// flowEvents 为空，insterval=null，hasSwap=false，hasClose=false
+        /// flowEvents 为空，observationInterval=null，hasSwap=false，hasClose=false
         /// → 应走 SaveEodInterestPositionCopy（cs:338）
         /// ---------------------------------------------------------------
         /// <summary>
@@ -522,6 +526,109 @@ namespace YLErp.Modules.SwapModule
         #endregion
 
         // ================================================================
+        #region 场景2补充：剩余3分支路由断言（经真实 DealInterests 路由器）
+
+        /// <summary>
+        /// [DI_BRANCH_003] 观察日无平仓（observationDay!=null, hasSwap=false, hasClose=false）
+        /// -> 走 SaveAutoEodInterestPosition（autoSwap 路径）。
+        /// 守卫：CalcSwapInterests 收到 eventType=自动互换、tdClose=false。
+        /// 补盖 TEST-MATRIX §6 的 AutoSettle 分支。
+        /// </summary>
+        [TestMethod]
+        public void DI_BRANCH_003_观察日自动结息走SaveAutoEodInterestPosition()
+        {
+            var service = new StubEodPositionService();
+            var td = CreateTrade();
+            var position = CreateInterestPosition();
+            var settleDate = new DateTime(2026, 5, 10);
+            var preEod = CreatePreEod(settleDate.AddDays(-1), DailyInterest);
+
+            position.InterestSwapInterval = JsonConvert.SerializeObject(new List<IntervalModel>
+            {
+                new IntervalModel { Date = settleDate, Rate = FixedRate, Settlement = 1 }
+            });
+
+            service.ExecuteDealInterests(
+                new List<swap_position> { position },
+                new List<eod_swap_position> { preEod },
+                settleDate, td, new List<swap_flow_event>(),
+                Principal, 0m, 0m, 1m, Principal);
+
+            Assert.IsTrue(service.PersistedPositions.Count > 0, "观察日应生成eod");
+            Assert.AreEqual((int)SwapEventTypeEnum.自动互换, service.LastEventType, "观察日自动结息 eventType 应为自动互换");
+            // 观察日自动结息走 SaveAutoEodInterestPosition（无平仓）：TdCloseInterest 仅为当日利息，不被平仓放大
+            Assert.IsTrue(service.PersistedPositions[0].TdCloseInterest < 0.1m, "观察日自动结息无平仓，TdCloseInterest 应仅为当日利息(<0.1)，不应含平仓利息");
+            Console.WriteLine("观察日自动结息分支 ✅ eventType=自动互换, tdClose=false");
+        }
+
+        /// <summary>
+        /// [DI_BRANCH_004] 观察日+平仓（observationDay!=null, hasClose=true）
+        /// -> 走 SaveAutoEodWithCloseInterestPosition(autoSwap:true)。
+        /// 守卫：CalcSwapInterests 收到 eventType=自动互换、tdClose=true。
+        /// 补盖 TEST-MATRIX §6 最弱格子（autoSwap=true 部分平仓）。
+        /// </summary>
+        [TestMethod]
+        public void DI_BRANCH_004_观察日平仓走WithClose_autoSwapTrue()
+        {
+            var service = new StubEodPositionService();
+            var td = CreateTrade();
+            var position = CreateInterestPosition();
+            var settleDate = new DateTime(2026, 5, 10);
+            var preEod = CreatePreEod(settleDate.AddDays(-1), DailyInterest * 13);
+
+            position.InterestSwapInterval = JsonConvert.SerializeObject(new List<IntervalModel>
+            {
+                new IntervalModel { Date = settleDate, Rate = FixedRate, Settlement = 1 }
+            });
+            var closeEvent = CreateSwapFlowEvent(settleDate, DailyInterest * 13);
+            closeEvent.EventType = (int)SwapFlowEventTypeEnum.平仓;
+
+            service.ExecuteDealInterests(
+                new List<swap_position> { position },
+                new List<eod_swap_position> { preEod },
+                settleDate, td, new List<swap_flow_event> { closeEvent },
+                Principal, 0m, 300m, 1m, Principal);
+
+            Assert.IsTrue(service.PersistedPositions.Count > 0, "观察日+平仓应生成eod");
+            Assert.AreEqual((int)SwapEventTypeEnum.自动互换, service.LastEventType, "autoSwap:true -> eventType 应为自动互换");
+            // 含平仓：TdCloseInterest 应明显大于纯当日利息（实测约 0.38）
+            Assert.IsTrue(service.PersistedPositions[0].TdCloseInterest > 0.1m, "观察日+平仓 TdCloseInterest 应含平仓利息(>0.1)");
+            Console.WriteLine("观察日+平仓分支 ✅ eventType=自动互换, TdCloseInterest>0.1 (autoSwap:true)");
+        }
+
+        /// <summary>
+        /// [DI_BRANCH_005] 非观察日+平仓（observationDay==null, hasClose=true, hasSwap=false）
+        /// -> 走 SaveAutoEodWithCloseInterestPosition(autoSwap:false)。
+        /// 守卫：CalcSwapInterests 收到 eventType=平仓、tdClose=true。
+        /// 补盖 TEST-MATRIX §6 的 CloseOnly 分支。
+        /// </summary>
+        [TestMethod]
+        public void DI_BRANCH_005_纯平仓走WithClose_autoSwapFalse()
+        {
+            var service = new StubEodPositionService();
+            var td = CreateTrade();
+            var position = CreateInterestPosition();
+            var settleDate = new DateTime(2026, 5, 10);
+            var preEod = CreatePreEod(settleDate.AddDays(-1), DailyInterest * 13);
+
+            position.InterestSwapInterval = null;
+            var closeEvent = CreateSwapFlowEvent(settleDate, DailyInterest * 13);
+            closeEvent.EventType = (int)SwapFlowEventTypeEnum.平仓;
+
+            service.ExecuteDealInterests(
+                new List<swap_position> { position },
+                new List<eod_swap_position> { preEod },
+                settleDate, td, new List<swap_flow_event> { closeEvent },
+                Principal, 0m, 300m, 1m, Principal);
+
+            Assert.IsTrue(service.PersistedPositions.Count > 0, "纯平仓应生成eod");
+            Assert.AreEqual((int)SwapEventTypeEnum.平仓, service.LastEventType, "autoSwap:false -> eventType 应为平仓");
+            Assert.IsTrue(service.PersistedPositions[0].TdCloseInterest > 0.1m, "纯平仓 TdCloseInterest 应含平仓利息(>0.1)");
+            Console.WriteLine("纯平仓分支 ✅ eventType=平仓, TdCloseInterest>0.1 (autoSwap:false)");
+        }
+
+        #endregion
+
         // 场景3：多日守恒——连续收盘归档，InterestIncomeSum 应线性递增
         // ================================================================
 
@@ -1229,8 +1336,8 @@ namespace YLErp.Modules.SwapModule
             var result = new SwapDealService(service).GetInterests(
                 td, td.trade_extend, closeDate, closeDate,
                 new List<eod_swap_position> { previousEod }, new List<swap_position> { position },
-                remainingNotional, remainingNotional, 0m, remainingNotional, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, 1m, orginPv,
+                remainingNotional, remainingNotional, 1m,
+                (int)SwapEventTypeEnum.平仓, false, orginPv,
                 false, settment: false, newCalcLast: false, closeList: null).Single();
 
             AssertDecimal(remainingNotional, result.InterestPrincipal,
@@ -1268,8 +1375,8 @@ namespace YLErp.Modules.SwapModule
             var firstCloseInterest = dealService.GetInterests(
                 td, td.trade_extend, firstCloseDate, firstCloseDate,
                 new List<eod_swap_position>(), new List<swap_position> { position },
-                originalNotional, originalNotional, 0m, remainingNotional, 0.5m,
-                (int)SwapEventTypeEnum.平仓, false, false, 1m, originalNotional,
+                originalNotional, remainingNotional, 0.5m,
+                (int)SwapEventTypeEnum.平仓, false, originalNotional,
                 settment: false).Single();
             var firstCloseCash = Math.Round(firstCloseInterest.InterestAmount, ConsGlobal.MoneyRound,
                 MidpointRounding.AwayFromZero);
@@ -1286,14 +1393,14 @@ namespace YLErp.Modules.SwapModule
             var replayAtPreviousEod = dealService.GetInterests(
                 td, td.trade_extend, firstCloseDate, firstCloseDate,
                 new List<eod_swap_position>(), new List<swap_position> { position },
-                remainingNotional, remainingNotional, 0m, remainingNotional, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, 1m, originalNotional,
+                remainingNotional, remainingNotional, 1m,
+                (int)SwapEventTypeEnum.平仓, false, originalNotional,
                 settment: false).Single();
             var replayAtFinalClose = dealService.GetInterests(
                 td, td.trade_extend, finalCloseDate, finalCloseDate,
                 new List<eod_swap_position>(), new List<swap_position> { position },
-                remainingNotional, remainingNotional, 0m, remainingNotional, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, 1m, originalNotional,
+                remainingNotional, remainingNotional, 1m,
+                (int)SwapEventTypeEnum.平仓, false, originalNotional,
                 settment: false).Single();
             var expectedFinalInterest = firstCloseEod.InterestIncomeSum
                 + replayAtFinalClose.InterestAmount - replayAtPreviousEod.InterestAmount;
@@ -1306,8 +1413,8 @@ namespace YLErp.Modules.SwapModule
             var finalCloseInterest = dealService.GetInterests(
                 td, td.trade_extend, finalCloseDate, finalCloseDate,
                 new List<eod_swap_position> { firstCloseEod }, new List<swap_position> { position },
-                remainingNotional, remainingNotional, 0m, remainingNotional, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, 1m, originalNotional,
+                remainingNotional, remainingNotional, 1m,
+                (int)SwapEventTypeEnum.平仓, false, originalNotional,
                 settment: false).Single();
             var finalCloseCash = Math.Round(finalCloseInterest.InterestAmount, ConsGlobal.MoneyRound,
                 MidpointRounding.AwayFromZero);
@@ -1434,8 +1541,8 @@ namespace YLErp.Modules.SwapModule
             var partial = service.GetInterests(
                 td, td.trade_extend, partialCloseDate, partialCloseDate,
                 new List<eod_swap_position> { previousEod }, new List<swap_position> { position },
-                notional, notional, 0m, partialNotional, partialPercent,
-                (int)SwapEventTypeEnum.平仓, false, false, 0m, notional,
+                notional, partialNotional, partialPercent,
+                (int)SwapEventTypeEnum.平仓, false, notional,
                 settment: false).Single();
             AssertDecimal(84090.95m, Math.Round(partial.InterestAmount, ConsGlobal.MoneyRound,
                 MidpointRounding.AwayFromZero),
@@ -1444,8 +1551,8 @@ namespace YLErp.Modules.SwapModule
             var final = service.GetInterests(
                 td, td.trade_extend, maturityDate, maturityDate,
                 new List<eod_swap_position>(), new List<swap_position> { position },
-                remainingNotional, remainingNotional, 0m, remainingNotional, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, 0m, remainingNotional,
+                remainingNotional, remainingNotional, 1m,
+                (int)SwapEventTypeEnum.平仓, false, remainingNotional,
                 settment: false, newCalcLast: true).Single();
             AssertDecimal(268428.73m, Math.Round(final.InterestAmount, ConsGlobal.MoneyRound,
                 MidpointRounding.AwayFromZero),
@@ -1575,8 +1682,8 @@ namespace YLErp.Modules.SwapModule
             var intermediateInterest = dealService.GetInterests(
                 td, td.trade_extend, intermediateDate, intermediateDate,
                 new List<eod_swap_position> { partialEod }, new List<swap_position> { position },
-                remainingNotional, remainingNotional, 0m, remainingNotional, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, 0m, originalNotional,
+                remainingNotional, remainingNotional, 1m,
+                (int)SwapEventTypeEnum.平仓, false, originalNotional,
                 settment: false, newCalcLast: true).Single();
             Assert.IsTrue(Math.Abs(259348.386714765m - intermediateInterest.InterestAmount) <= 0.01m,
                 $"5/18 复利平仓应承接 5/11 日终剩余本金的累计利息 Expected approximately 259348.386714765, Actual: {intermediateInterest.InterestAmount}");
@@ -1706,8 +1813,8 @@ namespace YLErp.Modules.SwapModule
             var intermediateInterest = dealService.GetInterests(
                 td, td.trade_extend, intermediateDate, intermediateDate,
                 new List<eod_swap_position> { partialEod }, new List<swap_position> { position },
-                remainingNotional, remainingNotional, 0m, remainingNotional, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, 0m, originalNotional,
+                remainingNotional, remainingNotional, 1m,
+                (int)SwapEventTypeEnum.平仓, false, originalNotional,
                 settment: false, newCalcLast: true).Single();
             Assert.IsTrue(Math.Abs(259348.386714765m - intermediateInterest.InterestAmount) <= 0.01m,
                 $"0005 5/18 复利应承接部分平仓后的累计利息 Expected approximately 259348.386714765, Actual: {intermediateInterest.InterestAmount}");
@@ -1724,14 +1831,14 @@ namespace YLErp.Modules.SwapModule
             decimal expectedAmountAtEnd = 0m;
             decimal expectedTdAmountAtEnd = 0m;
             dealService.CalcDailyCompoundInterest(
-                finalCloseDate, position, remainingNotional, expectedEndFlow, AnnualDays, false,
+                finalCloseDate, position, remainingNotional, expectedEndFlow, AnnualDays,
                 intermediateEod.FloatRate, 1m, true, false,
                 ref expectedAmountAtEnd, ref expectedTdAmountAtEnd);
             var expectedPreviousFlow = new swap_flow_event { InterestRate = spread };
             decimal expectedAmountAtPreviousEod = 0m;
             decimal expectedTdAmountAtPreviousEod = 0m;
             dealService.CalcDailyCompoundInterest(
-                intermediateDate, position, remainingNotional, expectedPreviousFlow, AnnualDays, false,
+                intermediateDate, position, remainingNotional, expectedPreviousFlow, AnnualDays,
                 intermediateEod.FloatRate, 1m, true, true,
                 ref expectedAmountAtPreviousEod, ref expectedTdAmountAtPreviousEod);
             var expectedFinalInterest = intermediateEod.InterestIncomeSum
@@ -1739,8 +1846,8 @@ namespace YLErp.Modules.SwapModule
             var finalInterest = dealService.GetInterests(
                 td, td.trade_extend, finalCloseDate, finalCloseDate,
                 new List<eod_swap_position> { intermediateEod }, new List<swap_position> { position },
-                remainingNotional, remainingNotional, 0m, remainingNotional, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, 0m, originalNotional,
+                remainingNotional, remainingNotional, 1m,
+                (int)SwapEventTypeEnum.平仓, false, originalNotional,
                 settment: false, newCalcLast: false).Single();
             AssertDecimal(expectedFinalInterest, finalInterest.InterestAmount,
                 "0005 最终全平重放时，历史5/18终点必须包含当日利息后再做差额");
@@ -1829,8 +1936,8 @@ namespace YLErp.Modules.SwapModule
             var result = dealService.GetInterests(
                 td, td.trade_extend, finalCloseDate, finalCloseDate,
                 new List<eod_swap_position> { previousEod }, new List<swap_position> { position },
-                remainingNotional, remainingNotional, 0m, remainingNotional, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, 0m, remainingNotional,
+                remainingNotional, remainingNotional, 1m,
+                (int)SwapEventTypeEnum.平仓, false, remainingNotional,
                 settment: false).Single();
 
             AssertDecimal(expectedInterest, result.InterestAmount,
@@ -1927,8 +2034,8 @@ namespace YLErp.Modules.SwapModule
             var partialInterest = dealService.GetInterests(
                 td, td.trade_extend, partialCloseDate, partialCloseDate,
                 new List<eod_swap_position> { preCloseEod }, new List<swap_position> { position },
-                originalNotional, originalNotional, 0m, partialNotional, partialClosePercent,
-                (int)SwapEventTypeEnum.平仓, false, false, 1m, originalNotional,
+                originalNotional, partialNotional, partialClosePercent,
+                (int)SwapEventTypeEnum.平仓, false, originalNotional,
                 settment: false).Single();
             AssertExcelMoney(scenario.ExpectedPartialInterest, partialInterest.InterestAmount,
                 $"{scenario.TradeNumber} 5/11 部分平仓利息应匹配 Excel BL 列");
@@ -1976,8 +2083,8 @@ namespace YLErp.Modules.SwapModule
             var finalInterest = dealService.GetInterests(
                 td, td.trade_extend, finalCloseDate, finalCloseDate,
                 new List<eod_swap_position> { finalPreEod }, new List<swap_position> { position },
-                remainingNotional, remainingNotional, 0m, remainingNotional, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, 1m, remainingNotional,
+                remainingNotional, remainingNotional, 1m,
+                (int)SwapEventTypeEnum.平仓, false, remainingNotional,
                 settment: false).Single();
             AssertExcelMoney(scenario.ExpectedFinalInterest, finalInterest.InterestAmount,
                 $"{scenario.TradeNumber} 5/19 全部平仓利息应匹配 Excel BN 列");

UnitTestProject/Modules/SwapModule/DividendEodNoDoubleCountTest.cs

@@ -0,0 +1,291 @@
+using YLErp;
+using YLErp.DBModels;
+using YLErp.DBModels.Enums;
+using YLErp.Modules.EodModule;
+
+namespace YLErp.Modules.SwapModule
+{
+    /// <summary>
+    /// 端到端：盘中收益互换（DividendIn 由生产方法 GetPreEodDividendSum 真实算出）→ 保存 → EOD，
+    /// 验证分红【不重复累计】（EOD TdCloseDividend 扣减 DividendIn）且【不丢失】（当日新计进 PosiDividendSum）。
+    ///
+    /// 与 MultiUnwindDividendConservationTest.MU_001 的区别：MU_001 的互换 DividendIn 是测试喂的常量；
+    /// 本测试的 DividendIn 由生产方法 GetPreEodDividendSum 真实算出（读 EOD 快照），再喂给 EOD——
+    /// 覆盖"预览算 DividendIn + EOD 扣减"的完整链路（MU_001 的缺口）。
+    /// </summary>
+    [TestClass]
+    public class DividendEodNoDoubleCountTest
+    {
+        private const int SwapTradeId = 9200;
+        private const long PositionId = 9201;
+        private const decimal InitialQty = 1000m;
+        private const decimal RegPer100 = 1.0m;     // 每 100 元面值票息 1.0 → qty(1000) 时单期分红 = 1.0×1000/100 = 10
+        private static readonly DateTime StartDate = new(2026, 1, 5);
+
+        #region 内存债券付息数据（reg_date 口径，真实生产 GetBondPayments 读取）
+
+        private const string BondUnderlying = "210210.IB";
+        private static List<BondPayment> BondPayments() => new List<BondPayment>
+        {
+            // 登记日 1/6、1/7 各一期；支付日滞后若干日（刻意与登记日不同，验证按 reg_date 而非 pay_date 计提）
+            new BondPayment { underlyingCode = BondUnderlying, reg_date = new DateTime(2026, 1, 6), payment_date_pl = new DateTime(2026, 1, 9), payment_date = new DateTime(2026, 1, 9), payment_interest = RegPer100 },
+            new BondPayment { underlyingCode = BondUnderlying, reg_date = new DateTime(2026, 1, 7), payment_date_pl = new DateTime(2026, 1, 10), payment_date = new DateTime(2026, 1, 10), payment_interest = RegPer100 },
+        };
+
+        #endregion
+
+        #region Stubs
+
+        /// <summary>SwapDealService stub：暴露 GetPreEodDividendSum，注入 EOD 数据（不连库）。</summary>
+        private sealed class DealSvcStub : SwapDealService
+        {
+            private readonly List<eod_swap> _eodSwaps;
+            private readonly List<eod_swap_position> _eodPositions;
+            public DealSvcStub(List<eod_swap> eodSwaps, List<eod_swap_position> eodPositions)
+                : base(OptUserInfo.UnitTestUser) { _eodSwaps = eodSwaps; _eodPositions = eodPositions; }
+            public decimal ExposeGetPreEodDividendSum(int tradeId, long positionId, DateTime dealDate)
+                => GetPreEodDividendSum(tradeId, positionId, dealDate);
+            protected override IQueryable<eod_swap> QueryPreEodSwaps(int tradeId)
+                => _eodSwaps.Where(x => x.SwapTradeId == tradeId).AsQueryable();
+            protected override eod_swap_position QueryPreEodPosition(int tradeId, long positionId, DateTime valueDate)
+                => _eodPositions.FirstOrDefault(x => x.SwapTradeId == tradeId && x.PositionId == positionId && x.ValueDate == valueDate);
+        }
+
+        /// <summary>真实 BondPaymentService（reg_date 口径）seam：仅注入内存 BondPayment 数据，票息计算走生产 GetBondPayments+CalcPayment。</summary>
+        private sealed class RealBondPaymentService : BondPaymentService
+        {
+            private readonly List<BondPayment> _data;
+            public RealBondPaymentService(List<BondPayment> data, OptUserInfo userInfo) : base(userInfo) { _data = data; }
+            protected override IQueryable<BondPayment> QueryBondPayments(string underlyingCode)
+                => _data.Where(x => x.underlyingCode == underlyingCode).AsQueryable();
+        }
+
+        /// <summary>SwapEodPositionService stub：暴露 UpdateEodPosition/CopyEodPosition；CalcBondPayment 桥接真实 BondPaymentService（reg_date 口径，不再用线性假公式）。</summary>
+        private sealed class EodSvcStub : TestableSwapEodPositionService
+        {
+            private readonly List<BondPayment> _bondPayments;
+            public EodSvcStub(List<BondPayment> bondPayments) : base(nameof(DividendEodNoDoubleCountTest)) { _bondPayments = bondPayments; }
+            protected override decimal CalcBondPayment(string underlyingCode, DateTime fromDate, DateTime toDate, decimal qty, int shortRatio, int directionRatio)
+            {
+                // 桥接真实生产口径：GetBondPayments 按 reg_date 过滤 + CalcPayment 累加（替换原线性假公式 DailyRatePerUnit*days*qty）
+                var svc = new RealBondPaymentService(_bondPayments, OptUserInfo.UnitTestUser);
+                return svc.CalcPayment(underlyingCode, fromDate, toDate, qty, shortRatio, directionRatio);
+            }
+            protected override underlying_manager GetUnderlyingData(string underlyingCode)
+                => new underlying_manager { ValueAddedTax = 0m };
+            protected override decimal GetUnderlyingPrice(string code, DateTime settleDate, out decimal vobp)
+            { vobp = 0m; return 1.00m; }
+            public eod_swap_position ExecuteUpdateEodPosition(swap_position swapPosition, eod_swap_position eod, trade td, DateTime valueDate, DateTime preSettleDate, List<swap_flow_event> unwindEvents)
+                => UpdateEodPosition(swapPosition, eod, null, td, valueDate, preSettleDate, unwindEvents);
+            public eod_swap_position ExecuteCopyEodPosition(eod_swap_position eod, trade td, DateTime valueDate, DateTime preSettleDate)
+                => CopyEodPosition(eod, null, td, valueDate, preSettleDate);
+        }
+
+        #endregion
+
+        #region 数据构建
+
+        private static trade CreateTrade() => new trade
+        {
+            id = SwapTradeId, TradeNumber = "UT-DIV-EOD-001", ClientId = 999999,
+            TradeType = "收益互换", TradeDate = StartDate, StartDate = StartDate,
+            ExerciseDate = new DateTime(2027, 1, 5), TradeStatus = "确认成交", ValidState = "Valid",
+            StructureType = "单标的", QuoteCurrency = "CNY", SettlementCurrency = "CNY",
+            OriginalStockEqvNotional = (double)(InitialQty * 1.00m)
+        };
+
+        private static swap_position CreatePosition() => new swap_position
+        {
+            id = PositionId, SwapTradeId = SwapTradeId,
+            PosiDirection = (int)SwapDirectionEnum.收取, PositionType = (int)PositionTypeFlag.Long,
+            UnderlyingCode = "210210.IB", ContractSize = 1m,
+            PosiQuantity = InitialQty, PosiNotionalValue = InitialQty,
+            PosiNetPrice = 1.000m, PosiGrossPrice = 1.000m,
+            PosiNetFeePrice = 1.000m, PosiNetNoFeePrice = 1.000m,
+            IsInitial = true, Invalid = false,
+            PosiTradingFee = 0, PosiTradingFeePending = 0
+        };
+
+        private static eod_swap_position CreateInitialEod() => new eod_swap_position
+        {
+            id = 1, SwapTradeId = SwapTradeId, PositionId = PositionId,
+            ValueDate = StartDate, PosiQuantity = InitialQty,
+            PosiDirection = (int)SwapDirectionEnum.收取, PositionType = (int)PositionTypeFlag.Long,
+            UnderlyingCode = "210210.IB", ContractSize = 1m,
+            PosiNetPrice = 1.000m, PosiGrossPrice = 1.000m,
+            PosiNetFeePrice = 1.000m, PosiNetNoFeePrice = 1.000m,
+            PosiDividendSum = 0m, TdPosiDividend = 0m, TdCloseDividend = 0m,
+            RealizedDividend = 0m, PosiFeePending = 0m,
+            InterestProfitSum = 0m, Invalid = false
+        };
+
+        private static swap_flow_event SwapEvent(decimal dividendIn, DateTime eventDate) => new swap_flow_event
+        {
+            SwapTradeId = SwapTradeId, EventType = (int)SwapFlowEventTypeEnum.互换,
+            PositionId = PositionId, Quantity = 0m, DividendIn = dividendIn,
+            MarkClosePnl = 0m, CloseFee = 0m, TradingFeePending = 0m,
+            EventDate = eventDate, PayDate = eventDate,
+            DataState = (int)SwapFlowDateStateEnum.完成
+        };
+
+        private static swap_flow_event CloseEvent(decimal qty, decimal dividendIn, DateTime eventDate) => new swap_flow_event
+        {
+            SwapTradeId = SwapTradeId, EventType = (int)SwapFlowEventTypeEnum.平仓,
+            PositionId = PositionId, Quantity = qty, DividendIn = dividendIn,
+            MarkClosePnl = 0m, CloseFee = 0m, TradingFeePending = 0m,
+            TradingAmount = qty * 1.000m,
+            UnwindDate = eventDate, EventDate = eventDate, PayDate = eventDate,
+            DataState = (int)SwapFlowDateStateEnum.完成
+        };
+
+        private static void AssertDecimalEqual(decimal expected, decimal actual, decimal tol, string msg)
+            => Assert.IsTrue(Math.Abs(expected - actual) <= tol, $"{msg}: expected={expected} actual={actual}");
+
+        #endregion
+
+        /// <summary>
+        /// 盘中收益互换：DividendIn 由 GetPreEodDividendSum 真实算（读 T-1 EOD）→ 保存 → EOD。
+        /// 验证：不重复（EOD TdCloseDividend 扣 DividendIn）+ 不丢失（当日新计进 PosiDividendSum）+ 守恒。
+        ///
+        /// 序列（StartDate=1/5，reg_date 1/6、1/7 各一期，每期 = qty×per100/100 = 10）：
+        ///   D1=1/6 无事件 Copy：窗口(1/5,1/6] 命中 reg_date 1/6 → TdPosiDividend=10，PosiDividendSum=10
+        ///   D2=1/7 盘中互换：GetPreEodDividendSum(读 D1) → DividendIn=10；保存 swap_event；EOD 窗口(1/6,1/7] 命中 reg_date 1/7 → 新计 10 - 实现 10 → PosiDividendSum=10
+        /// 守恒：全程新计(10+10) - 全程实现(10) = 末尾 PosiDividendSum(10)
+        /// </summary>
+        [TestMethod]
+        public void 盘中收益互换_DividendIn真实算_保存后EOD_不重复不丢失()
+        {
+            var eodSvc = new EodSvcStub(BondPayments());
+            var td = CreateTrade();
+            var position = CreatePosition();
+            var initialEod = CreateInitialEod();
+
+            // D1=1/6 无事件 EOD
+            var d1 = new DateTime(2026, 1, 6);
+            var r1 = eodSvc.ExecuteCopyEodPosition(initialEod, td, d1, StartDate);
+            AssertDecimalEqual(10m, r1.PosiDividendSum, 0.01m, "D1 PosiDividendSum(0+1天×10)");
+
+            // D2=1/7 盘中：DividendIn 由生产方法 GetPreEodDividendSum 真实算（读 D1 EOD，当日 EOD 未生成）
+            var d2 = new DateTime(2026, 1, 7);
+            var dealSvc = new DealSvcStub(
+                new List<eod_swap> { new eod_swap { SwapTradeId = SwapTradeId, ValueDate = d1 } },
+                new List<eod_swap_position> { r1 });
+            decimal dividendIn = dealSvc.ExposeGetPreEodDividendSum(SwapTradeId, PositionId, d2);
+            AssertDecimalEqual(10m, dividendIn, 0.01m, "盘中 DividendIn=GetPreEodDividendSum 读 T-1(D1)=10");
+            Console.WriteLine($"[盘中预览] DividendIn={dividendIn}（读 T-1 EOD PosiDividendSum={r1.PosiDividendSum}）");
+
+            // 保存互换事件（DividendIn=真实算出的值，模拟界面点收益互换后保存）
+            var swapEvent = SwapEvent(dividendIn, d2);
+
+            // D2=1/7 EOD（UpdateEodPosition，真实生产递推）
+            var r2 = eodSvc.ExecuteUpdateEodPosition(position, r1, td, d2, d1, new List<swap_flow_event> { swapEvent });
+
+            // 断言：不重复 + 不丢失
+            AssertDecimalEqual(10m, r2.TdPosiDividend, 0.01m, "D2 当日新计(1天×10)");
+            AssertDecimalEqual(dividendIn, r2.TdCloseDividend, 0.01m, "D2 TdCloseDividend=互换DividendIn（扣减→不重复累计）");
+            AssertDecimalEqual(10m, r2.PosiDividendSum, 0.01m, "D2 PosiDividendSum=前日10+新计10-实现10=10（当日新计挂着→不丢失）");
+
+            // 守恒：全程新计 - 全程实现 = 末尾 PosiDividendSum
+            decimal totalNew = r1.TdPosiDividend + r2.TdPosiDividend;
+            decimal totalRealized = r2.TdCloseDividend;
+            AssertDecimalEqual(r2.PosiDividendSum, totalNew - totalRealized, 0.01m,
+                $"守恒：末尾 PosiDividendSum({r2.PosiDividendSum}) = 全程新计({totalNew}) - 全程实现({totalRealized})");
+
+            Console.WriteLine($"[EOD 后] TdPosiDividend={r2.TdPosiDividend} TdCloseDividend={r2.TdCloseDividend} PosiDividendSum={r2.PosiDividendSum}");
+            Console.WriteLine($"结论：互换实现 {dividendIn} 被扣减（不重复）；当日新计 {r2.TdPosiDividend} 挂 PosiDividendSum（不丢失）");
+        }
+
+        /// <summary>
+        /// 登记日当日全平（盘中平仓→收盘持仓 0）：按各交易场所规定，不享有登记日当日的分红
+        /// （股权登记日以收盘在册为准；盘中全平→收盘不在册）。验证系统行为符合该规定。
+        ///
+        /// 系统行为：①盘中 DividendIn=GetPreEodDividendSum 读 T-1（=T日前待实现，正确不含登记日当日 reg_date 1/7 的分红）；
+        ///         ②EOD 全平 PosiQuantity=0 → TdPosiDividend=0（不计提登记日当日 reg_date 1/7）+ PosiDividendSum=0。
+        /// 即登记日当日分红（reg_date 1/7 的 10）既不进 DividendIn、也不进 PosiDividendSum = 正确不享有。
+        /// 应得 = T日前待实现累计（r1.PosiDividendSum，仅含 1/6 那期 10）；实拿 = DividendIn → 相等，无丢失（不享有当日是正确的）。
+        /// </summary>
+        [TestMethod]
+        public void 登记日全平_按交易场所规定不享有当日分红()
+        {
+            var eodSvc = new EodSvcStub(BondPayments());
+            var td = CreateTrade();
+            var position = CreatePosition();
+            var initialEod = CreateInitialEod();
+
+            // D1=1/6 无事件 EOD
+            var d1 = new DateTime(2026, 1, 6);
+            var r1 = eodSvc.ExecuteCopyEodPosition(initialEod, td, d1, StartDate);
+            AssertDecimalEqual(10m, r1.PosiDividendSum, 0.01m, "D1 PosiDividendSum");
+
+            // D2=1/7 盘中全平：DividendIn 由生产方法真实算（读 D1 EOD，当日 EOD 未生成）
+            var d2 = new DateTime(2026, 1, 7);
+            var dealSvc = new DealSvcStub(
+                new List<eod_swap> { new eod_swap { SwapTradeId = SwapTradeId, ValueDate = d1 } },
+                new List<eod_swap_position> { r1 });
+            decimal dividendIn = dealSvc.ExposeGetPreEodDividendSum(SwapTradeId, PositionId, d2);
+            AssertDecimalEqual(10m, dividendIn, 0.01m, "全平 DividendIn=读T-1(D1)=10（漏 D2 当日新计）");
+
+            // 全平事件（扣全部持仓）
+            var closeEvent = CloseEvent(InitialQty, dividendIn, d2);
+
+            // D2=1/7 EOD（UpdateEodPosition，全平→PosiQuantity=0）
+            var r2 = eodSvc.ExecuteUpdateEodPosition(position, r1, td, d2, d1, new List<swap_flow_event> { closeEvent });
+
+            // 业务规定：登记日当日全平（盘中平仓→收盘持仓为 0），按各交易场所规定不享有登记日当日的分红
+            // （股权登记日以收盘在册为准）。故应得 = T日(登记日)之前的待实现累计 = r1.PosiDividendSum（不含登记日当日）。
+            // 系统行为正确：①DividendIn 读 T-1（=T日前待实现，正确不含当日）；②EOD 全平 PosiQuantity=0 不计提当日。
+            // 即登记日当日分红既不进 DividendIn 也不进 PosiDividendSum = 正确不享有。
+            decimal expectedTotal = r1.PosiDividendSum;   // 应得 = T日前待实现（不含登记日当日，因全平不享有）
+            decimal actualGot = dividendIn + r2.PosiDividendSum;
+
+            Console.WriteLine($"[登记日全平] 应得(T日前待实现)={expectedTotal}, 实拿(DividendIn+PosiDividendSum)={actualGot}");
+            Console.WriteLine($"[登记日全平] DividendIn={dividendIn}, EOD:TdPosiDividend={r2.TdPosiDividend} PosiDividendSum={r2.PosiDividendSum} PosiQuantity={r2.PosiQuantity}");
+
+            // 断言：实拿 = 应得（登记日全平不享有当日，符合交易场所规定）
+            AssertDecimalEqual(expectedTotal, actualGot, 0.01m,
+                $"实拿应=应得(T日前待实现{expectedTotal})，登记日全平不享有当日分红（符合交易场所规定）");
+            AssertDecimalEqual(0m, r2.TdPosiDividend, 0.01m, "登记日全平 EOD 不计提当日（PosiQuantity=0，正确）");
+            AssertDecimalEqual(0m, r2.PosiDividendSum, 0.01m, "全平后 PosiDividendSum=0");
+        }
+
+        /// <summary>
+        /// 【死代码删除的边界规格】脏数据（OriginalStockEqvNotional=null / PosiNetPrice=0）不得让
+        /// UpdateEodPosition 崩溃，且分红产出与正常数据完全一致。
+        /// 背景：这两个字段在 UpdateEodPosition 内的唯一消费点是历史遗留死代码
+        /// （originNotional→totalPayment 全历史重算，结果从未被使用，2026-08 论证后删除）——
+        /// 删除前该脏数据会在 EOD 抛 InvalidOperationException/除零；删除后是设计内行为。
+        /// 本测试同时钉住：删除后输出等价（与同输入正常数据路径一致）。
+        /// </summary>
+        [TestMethod]
+        public void 脏数据边界_死代码涉及字段_不影响EOD分红产出()
+        {
+            // 正常数据基准
+            var eodSvcClean = new EodSvcStub(BondPayments());
+            var tdClean = CreateTrade();
+            var positionClean = CreatePosition();
+            var initialEod = CreateInitialEod();
+            var d1 = new DateTime(2026, 1, 6);
+            var d2 = new DateTime(2026, 1, 7);
+            var r1Clean = eodSvcClean.ExecuteCopyEodPosition(initialEod, tdClean, d1, StartDate);
+            var r2Clean = eodSvcClean.ExecuteUpdateEodPosition(positionClean, r1Clean, tdClean, d2, d1,
+                new List<swap_flow_event> { CloseEvent(InitialQty, r1Clean.PosiDividendSum, d2) });
+
+            // 脏数据：死代码涉及的两字段置脏（活路径零消费，见方法内 grep 论证）
+            var eodSvcDirty = new EodSvcStub(BondPayments());
+            var tdDirty = CreateTrade();
+            tdDirty.OriginalStockEqvNotional = null;   // 死代码 (decimal) 强转崩溃点
+            var positionDirty = CreatePosition();
+            positionDirty.PosiNetPrice = 0m;           // 死代码除零崩溃点
+            var r1Dirty = eodSvcDirty.ExecuteCopyEodPosition(initialEod, tdDirty, d1, StartDate);
+            var r2Dirty = eodSvcDirty.ExecuteUpdateEodPosition(positionDirty, r1Dirty, tdDirty, d2, d1,
+                new List<swap_flow_event> { CloseEvent(InitialQty, r1Dirty.PosiDividendSum, d2) });
+
+            // 脏数据不崩 + 输出与正常数据逐字段一致
+            AssertDecimalEqual(r2Clean.TdPosiDividend, r2Dirty.TdPosiDividend, 0.0001m, "TdPosiDividend 不受脏字段影响");
+            AssertDecimalEqual(r2Clean.TdCloseDividend, r2Dirty.TdCloseDividend, 0.0001m, "TdCloseDividend 不受脏字段影响");
+            AssertDecimalEqual(r2Clean.PosiDividendSum, r2Dirty.PosiDividendSum, 0.0001m, "PosiDividendSum 不受脏字段影响");
+            AssertDecimalEqual(r2Clean.RealizedDividend, r2Dirty.RealizedDividend, 0.0001m, "RealizedDividend 不受脏字段影响");
+            Console.WriteLine($"[脏数据边界] 正常={r2Clean.PosiDividendSum} 脏数据={r2Dirty.PosiDividendSum}（应相等且不抛异常）");
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/FundingLegs/FundingLegStrategyTest.cs

@@ -6,16 +6,14 @@ using YLErp.Modules.SwapModule.FundingLegs;
 namespace UnitTestProject.Modules.SwapModule.FundingLegs
 {
     /// <summary>
-    /// 融资腿策略单测。验证每个策略的 CalcNotional 与现有 CalcNotionalByMode switch 完全一致。
-    /// 这组测试是后续"迁移调用点"的安全网——迁移前后行为必须不变。
+    /// 融资腿策略单测。验证每个 IFundingLegStrategy 实现的 CalcNotional 计息基数公式正确。
+    /// 原 CalcNotionalByMode switch 已重构为策略类（见 FundingLegStrategyFactory）。
     /// </summary>
     [TestClass]
     public class FundingLegStrategyTest
     {
         private const decimal Fix = 2_000_000m;
         private const decimal Notional = 100_000_000m;
-        private const decimal LongNotional = 60_000_000m;
-        private const decimal ShortNotional = 40_000_000m;
 
         #region 固定值(mode 1)
 
@@ -23,7 +21,7 @@ namespace UnitTestProject.Modules.SwapModule.FundingLegs
         public void 固定值_部分平仓_计息基数恒等于Fix()
         {
             var leg = new FixedAmountLeg();
-            var r = leg.CalcNotional(Fix, Notional, LongNotional, ShortNotional, 0.5m);
+            var r = leg.CalcNotional(Fix, Notional, 0.5m);
 
             Assert.AreEqual(Fix, r.ClosePrincipal, "平仓本金恒=Fix");
             Assert.AreEqual(Fix, r.PosiPrincipal, "持仓本金恒=Fix");
@@ -34,7 +32,7 @@ namespace UnitTestProject.Modules.SwapModule.FundingLegs
         public void 固定值_全平_计息基数仍等于Fix()
         {
             var leg = new FixedAmountLeg();
-            var r = leg.CalcNotional(Fix, Notional, LongNotional, ShortNotional, 1m);
+            var r = leg.CalcNotional(Fix, Notional, 1m);
             Assert.AreEqual(Fix, r.ClosePrincipal);
         }
 
@@ -46,7 +44,7 @@ namespace UnitTestProject.Modules.SwapModule.FundingLegs
         public void 合约名义本金_部分平仓_本金按比例缩放()
         {
             var leg = new ContractNotionalLeg();
-            var r = leg.CalcNotional(Fix, Notional, LongNotional, ShortNotional, 0.5m);
+            var r = leg.CalcNotional(Fix, Notional, 0.5m);
 
             Assert.AreEqual(50_000_000m, r.ClosePrincipal);
             Assert.AreEqual(Notional, r.PosiPrincipal);
@@ -57,7 +55,7 @@ namespace UnitTestProject.Modules.SwapModule.FundingLegs
         public void 合约名义本金_全平_本金等于全额()
         {
             var leg = new ContractNotionalLeg();
-            var r = leg.CalcNotional(Fix, Notional, LongNotional, ShortNotional, 1m);
+            var r = leg.CalcNotional(Fix, Notional, 1m);
             Assert.AreEqual(Notional, r.ClosePrincipal);
         }
 
@@ -65,7 +63,7 @@ namespace UnitTestProject.Modules.SwapModule.FundingLegs
         public void 合约名义本金_零平仓_本金为零()
         {
             var leg = new ContractNotionalLeg();
-            var r = leg.CalcNotional(Fix, Notional, LongNotional, ShortNotional, 0m);
+            var r = leg.CalcNotional(Fix, Notional, 0m);
 
             Assert.AreEqual(0m, r.ClosePrincipal);
             Assert.AreEqual(Notional, r.PosiPrincipal);
@@ -79,7 +77,7 @@ namespace UnitTestProject.Modules.SwapModule.FundingLegs
         public void 标的期初全价_部分平仓_主路径公式同mode2()
         {
             var leg = new UnderlyingEntryFullPriceLeg();
-            var r = leg.CalcNotional(Fix, Notional, LongNotional, ShortNotional, 0.5m);
+            var r = leg.CalcNotional(Fix, Notional, 0.5m);
 
             Assert.AreEqual(50_000_000m, r.ClosePrincipal);
             Assert.AreEqual(Notional, r.PosiPrincipal);
@@ -90,7 +88,7 @@ namespace UnitTestProject.Modules.SwapModule.FundingLegs
         public void 标的期初全价_全平_本金等于全额()
         {
             var leg = new UnderlyingEntryFullPriceLeg();
-            var r = leg.CalcNotional(Fix, Notional, LongNotional, ShortNotional, 1m);
+            var r = leg.CalcNotional(Fix, Notional, 1m);
             Assert.AreEqual(Notional, r.ClosePrincipal);
         }
 

UnitTestProject/Modules/SwapModule/GLMS20260105_0006_RegisterDateDividendTest.cs

@@ -0,0 +1,235 @@
+using YLErp.Modules.EodModule;
+
+namespace YLErp.Modules.SwapModule
+{
+    /// <summary>
+    /// GLMS-20260105-0006 回归：债券 TRS 登记日当天手动平仓/互换，分红收益应为 36160 而非 0。
+    /// 根因双成因：
+    ///   A. BondPaymentService.GetBondPayments 用支付日(pay_date_PL/pay_date_act)而非债权登记日(reg_date)判定谁享有票息
+    ///      -> 登记日(4/3)当日 EOD 不计提，跨过支付日(4/6)才计提（巧合：4/4-4/5周末，下一交易日恰=支付日，掩盖缺陷）
+    ///   B. SwapDealService.GetPreEodDividendSum 用 ValueDate 严格小于 dealDate 读 T-1 EOD 快照
+    ///      -> 登记日当天手动平仓读不到当日 EOD，拿到 0
+    /// 本文件用手工合成内存数据（不连 96 库），通过 virtual seam 注入，真实跑生产日期逻辑。
+    /// </summary>
+    [TestClass]
+    public class GLMS20260105_0006_RegisterDateDividendTest
+    {
+        private const string BondCode = "230004.IB";
+        private const int TradeId = 6006;
+        private const long PositionId = 60061;
+        private const decimal Qty = 20_000_000m;
+        private const decimal PaymentPer100 = 0.1808m;
+        private const decimal ExpectedDividend = 36_160m; // 20,000,000 × 0.1808 / 100
+
+        // 付息日历（截图）：登记日 4/3，支付日 4/6
+        private static readonly DateTime RegDate = new(2026, 4, 3);
+        private static readonly DateTime PayDate = new(2026, 4, 6);
+        private static readonly DateTime PreRegDate = new(2026, 4, 2);
+
+        // 多次付息日历（截图：债券 230004.IB，每期票息 0.1808，共 5 次登记日）
+        private static readonly DateTime[] RegDates = {
+            new(2026, 2, 28), new(2026, 4, 3), new(2026, 4, 29),
+            new(2026, 5, 29), new(2026, 6, 29)
+        };
+        private static readonly DateTime[] PayDates = {
+            new(2026, 3, 2), new(2026, 4, 6), new(2026, 4, 30),
+            new(2026, 6, 1), new(2026, 6, 30)
+        };
+
+        #region 成因 A：日期口径 seam
+
+        private sealed class TestableBondPaymentService : BondPaymentService
+        {
+            private readonly List<BondPayment> _data;
+            public TestableBondPaymentService(List<BondPayment> data) : base(OptUserInfo.UnitTestUser) { _data = data; }
+
+            protected override IQueryable<BondPayment> QueryBondPayments(string underlyingCode)
+                => _data.Where(x => x.underlyingCode == underlyingCode).AsQueryable();
+        }
+
+        [TestMethod]
+        public void CauseA_登记日当日EOD_应按登记日口径选中付息记录()
+        {
+            var record = new BondPayment
+            {
+                underlyingCode = BondCode,
+                reg_date = RegDate,          // 债权登记日 4/3（关键：分红归属按此判定）
+                payment_date_pl = PayDate,   // 理论付息日 4/6
+                payment_date = PayDate,      // 实际付息日 4/6
+                payment_interest = PaymentPer100
+            };
+            var svc = new TestableBondPaymentService(new List<BondPayment> { record });
+
+            // 登记日当日的 EOD 计提区间 (4/2, 4/3]
+            var payments = svc.GetBondPayments(BondCode, PreRegDate, RegDate);
+
+            // 修复前：用支付日(pay_date_PL=4/6)过滤 -> 4/6 不在 (4/2,4/3] -> 0 条（漏计分红）
+            // 修复后：用债权登记日(reg_date=4/3)过滤 -> 4/3 落在区间 -> 1 条（GLMS-20260105-0006 已修复）
+            Assert.AreEqual(1, payments.Count,
+                "登记日(4/3)当日 EOD 应按债权登记日(reg_date)选中该笔付息；" +
+                "当前按支付日(pay_date_PL=4/6)过滤会漏选->0条，导致分红不计提。");
+        }
+
+        [TestMethod]
+        public void CauseA_MultiRegDate_跨登记日区间命中正确子集()
+        {
+            var records = Enumerable.Range(0, 5).Select(i => new BondPayment
+            {
+                underlyingCode = BondCode,
+                reg_date = RegDates[i],
+                payment_date_pl = PayDates[i],
+                payment_date = PayDates[i],
+                payment_interest = PaymentPer100
+            }).ToList();
+            var svc = new TestableBondPaymentService(records);
+
+            // 单次窗口：每个登记日各自命中 1 条（验证按 reg_date 过滤，非支付日）
+            for (int i = 0; i < 5; i++)
+            {
+                var prev = i == 0 ? RegDates[i].AddDays(-1) : RegDates[i - 1];
+                var hit = svc.GetBondPayments(BondCode, prev, RegDates[i]);
+                Assert.AreEqual(1, hit.Count, $"窗口({prev:yyyy-MM-dd},{RegDates[i]:yyyy-MM-dd}] 应仅命中登记日 {RegDates[i]:yyyy-MM-dd} 那条");
+                Assert.AreEqual(RegDates[i], hit[0].reg_date, "命中的应是该登记日记录");
+            }
+
+            // 长区间应命中全部 5 条，不漏不混
+            var all = svc.GetBondPayments(BondCode, RegDates[0].AddDays(-1), RegDates[4]);
+            Assert.AreEqual(5, all.Count, "长区间(登记日1前,登记日5] 应命中全部 5 次付息");
+
+            // 跨登记日中间区间：(4/2, 4/29] 应命中 4/3 与 4/29 两条（不含 2/28、5/29、6/29）
+            var mid = svc.GetBondPayments(BondCode, new DateTime(2026, 4, 2), new DateTime(2026, 4, 29));
+            Assert.AreEqual(2, mid.Count, "(4/2,4/29] 应命中 4/3+4/29 两条");
+            CollectionAssert.AreEquivalent(
+                new[] { new DateTime(2026, 4, 3), new DateTime(2026, 4, 29) },
+                mid.Select(x => x.reg_date!.Value).ToArray());
+        }
+
+        [TestMethod]
+        public void CauseA_MultiRegDate_CalcPayment累加五期票息()
+        {
+            var records = Enumerable.Range(0, 5).Select(i => new BondPayment
+            {
+                underlyingCode = BondCode,
+                reg_date = RegDates[i],
+                payment_date_pl = PayDates[i],
+                payment_date = PayDates[i],
+                payment_interest = PaymentPer100
+            }).ToList();
+            var svc = new TestableBondPaymentService(records);
+
+            // 长区间取全部 5 期，CalcPayment 应累加 = 5 × 36160 = 180,800（原测试仅覆盖单期）
+            var payments = svc.GetBondPayments(BondCode, RegDates[0].AddDays(-1), RegDates[4]);
+            var total = svc.CalcPayment(payments, Qty, 1, 1);
+            Assert.AreEqual(5 * ExpectedDividend, total, 0.01m,
+                "5 期票息累加应为 5 × 36,160 = 180,800；单期口径会漏计其余 4 期");
+        }
+
+        #endregion
+
+        #region 成因 B：T-1 快照 seam
+
+        private sealed class TestableSwapDealService : SwapDealService
+        {
+            private readonly List<eod_swap> _eodSwaps;
+            private readonly List<eod_swap_position> _eodPositions;
+            public TestableSwapDealService(List<eod_swap> eodSwaps, List<eod_swap_position> eodPositions)
+                : base(OptUserInfo.UnitTestUser) { _eodSwaps = eodSwaps; _eodPositions = eodPositions; }
+
+            public decimal ExposeGetPreEodDividendSum(int tradeId, long positionId, DateTime dealDate)
+                => GetPreEodDividendSum(tradeId, positionId, dealDate);
+
+            protected override IQueryable<eod_swap> QueryPreEodSwaps(int tradeId)
+                => _eodSwaps.Where(x => x.SwapTradeId == tradeId).AsQueryable();
+
+            protected override eod_swap_position QueryPreEodPosition(int tradeId, long positionId, DateTime valueDate)
+                => _eodPositions.FirstOrDefault(x => x.SwapTradeId == tradeId && x.PositionId == positionId && x.ValueDate == valueDate);
+        }
+
+        [TestMethod]
+        public void CauseB_登记日当天手动平仓_应读到当日EOD分红36160()
+        {
+            // 4/2 EOD：累计分红 0；4/3 EOD（登记日）：累计分红 36160（即登记日应有的状态）
+            var eodSwaps = new List<eod_swap>
+            {
+                new eod_swap { SwapTradeId = TradeId, ValueDate = PreRegDate },
+                new eod_swap { SwapTradeId = TradeId, ValueDate = RegDate }
+            };
+            var eodPositions = new List<eod_swap_position>
+            {
+                new eod_swap_position { SwapTradeId = TradeId, PositionId = PositionId, ValueDate = PreRegDate, PosiDividendSum = 0m, PosiQuantity = Qty },
+                new eod_swap_position { SwapTradeId = TradeId, PositionId = PositionId, ValueDate = RegDate, PosiDividendSum = ExpectedDividend, PosiQuantity = Qty }
+            };
+            var svc = new TestableSwapDealService(eodSwaps, eodPositions);
+
+            // 登记日(4/3)当天手动平仓
+            var dividend = svc.ExposeGetPreEodDividendSum(TradeId, PositionId, RegDate);
+
+            // 修复前：ValueDate 严格小于 dealDate 读 T-1(4/2) -> 0（漏读当日分红）
+            // 修复后：ValueDate 小于等于 dealDate 读当日(4/3) -> 36160（GLMS-20260105-0006 已修复）
+            Assert.AreEqual(ExpectedDividend, dividend, 0.01m,
+                "登记日(4/3)当天手动平仓应读到当日 EOD 累计分红 36,160；" +
+                "当前 GetPreEodDividendSum 用 ValueDate < dealDate 读 T-1 快照->0。");
+        }
+
+        [TestMethod]
+        public void CauseB_MultiRegDate_Auto实现归0后下次登记日重新累加()
+        {
+            // 模拟：登记日1(2/28)计提 36160 → auto互换实现归0(3/1) → 登记日2(4/3)再计提 36160
+            var eodSwaps = new List<eod_swap>
+            {
+                new eod_swap { SwapTradeId = TradeId, ValueDate = new DateTime(2026,2,27) },
+                new eod_swap { SwapTradeId = TradeId, ValueDate = new DateTime(2026,2,28) },
+                new eod_swap { SwapTradeId = TradeId, ValueDate = new DateTime(2026,3,1) },
+                new eod_swap { SwapTradeId = TradeId, ValueDate = new DateTime(2026,4,2) },
+                new eod_swap { SwapTradeId = TradeId, ValueDate = new DateTime(2026,4,3) },
+            };
+            var eodPositions = new List<eod_swap_position>
+            {
+                new eod_swap_position { SwapTradeId = TradeId, PositionId = PositionId, ValueDate = new DateTime(2026,2,27), PosiDividendSum = 0m, PosiQuantity = Qty },
+                new eod_swap_position { SwapTradeId = TradeId, PositionId = PositionId, ValueDate = new DateTime(2026,2,28), PosiDividendSum = ExpectedDividend, PosiQuantity = Qty },
+                new eod_swap_position { SwapTradeId = TradeId, PositionId = PositionId, ValueDate = new DateTime(2026,3,1), PosiDividendSum = 0m, PosiQuantity = Qty },
+                new eod_swap_position { SwapTradeId = TradeId, PositionId = PositionId, ValueDate = new DateTime(2026,4,2), PosiDividendSum = 0m, PosiQuantity = Qty },
+                new eod_swap_position { SwapTradeId = TradeId, PositionId = PositionId, ValueDate = new DateTime(2026,4,3), PosiDividendSum = ExpectedDividend, PosiQuantity = Qty },
+            };
+            var svc = new TestableSwapDealService(eodSwaps, eodPositions);
+
+            // 登记日2(4/3)当天手动互换：应读 4/3 EOD = 36160（第二次，非第一次已实现的、非 0）
+            var dividend = svc.ExposeGetPreEodDividendSum(TradeId, PositionId, new DateTime(2026, 4, 3));
+            Assert.AreEqual(ExpectedDividend, dividend, 0.01m,
+                "登记日2(4/3)手动互换应读当日EOD=第二次分红36160；" +
+                "若读T-1(4/2=0)则漏当日，若读2/28则错取第一次已实现的。");
+        }
+
+        [TestMethod]
+        public void CauseB_MultiRegDate_手动互换期间分红挂账累计四期()
+        {
+            // 模拟：多次登记日之间未 auto 实现，分红挂账累加
+            //   4/3=36160, 4/29=72320, 5/29=108480, 6/29=144640（4期累计）
+            var eodSwaps = new List<eod_swap>
+            {
+                new eod_swap { SwapTradeId = TradeId, ValueDate = new DateTime(2026,4,3) },
+                new eod_swap { SwapTradeId = TradeId, ValueDate = new DateTime(2026,4,29) },
+                new eod_swap { SwapTradeId = TradeId, ValueDate = new DateTime(2026,5,29) },
+                new eod_swap { SwapTradeId = TradeId, ValueDate = new DateTime(2026,6,29) },
+            };
+            var eodPositions = new List<eod_swap_position>
+            {
+                new eod_swap_position { SwapTradeId = TradeId, PositionId = PositionId, ValueDate = new DateTime(2026,4,3), PosiDividendSum = 1 * ExpectedDividend, PosiQuantity = Qty },
+                new eod_swap_position { SwapTradeId = TradeId, PositionId = PositionId, ValueDate = new DateTime(2026,4,29), PosiDividendSum = 2 * ExpectedDividend, PosiQuantity = Qty },
+                new eod_swap_position { SwapTradeId = TradeId, PositionId = PositionId, ValueDate = new DateTime(2026,5,29), PosiDividendSum = 3 * ExpectedDividend, PosiQuantity = Qty },
+                new eod_swap_position { SwapTradeId = TradeId, PositionId = PositionId, ValueDate = new DateTime(2026,6,29), PosiDividendSum = 4 * ExpectedDividend, PosiQuantity = Qty },
+            };
+            var svc = new TestableSwapDealService(eodSwaps, eodPositions);
+
+            // 每次登记日当天手动互换应读到该日累计值（验证多次付息累计被正确读取）
+            Assert.AreEqual(1 * ExpectedDividend, svc.ExposeGetPreEodDividendSum(TradeId, PositionId, new DateTime(2026, 4, 3)), 0.01m, "4/3 应读 36160");
+            Assert.AreEqual(2 * ExpectedDividend, svc.ExposeGetPreEodDividendSum(TradeId, PositionId, new DateTime(2026, 4, 29)), 0.01m, "4/29 应读 72320（2期累计）");
+            Assert.AreEqual(3 * ExpectedDividend, svc.ExposeGetPreEodDividendSum(TradeId, PositionId, new DateTime(2026, 5, 29)), 0.01m, "5/29 应读 108480（3期累计）");
+            // 关键：第 4 期登记日累计 = 4 × 36160 = 144640（原 9df39491 仅覆盖单期 36160，未验证多次付息累计）
+            Assert.AreEqual(4 * ExpectedDividend, svc.ExposeGetPreEodDividendSum(TradeId, PositionId, new DateTime(2026, 6, 29)), 0.01m,
+                "6/29 应读 144640（4期累计）；原 9df39491 仅覆盖单期 36160，未验证多次付息累计。");
+        }
+
+        #endregion
+    }
+}

UnitTestProject/Modules/SwapModule/GLMS20260701DbDiagnoseTest.cs

@@ -28,6 +28,7 @@ namespace YLErp.Modules.SwapModule
         [TestCategory("DbDiagnose")]
         public void Record_RealSnapshot()
         {
+            DbDiagnoseGuard.RequireTestDb();
             YLContext db;
             try { db = DbContextFactory.GetYLDbContext(); }
             catch (Exception ex) { Assert.Inconclusive($"无法连接测试库：{ex.Message}"); return; }
@@ -113,6 +114,7 @@ namespace YLErp.Modules.SwapModule
 
         private void DiagnoseTrade(string tradeNumber)
         {
+            DbDiagnoseGuard.RequireTestDb();
             YLContext db;
             try { db = DbContextFactory.GetYLDbContext(); }
             catch (Exception ex) { Assert.Inconclusive($"无法连接测试库：{ex.Message}"); return; }
@@ -266,6 +268,7 @@ namespace YLErp.Modules.SwapModule
         public void Diagnose_0006_UnwindPercentRate_Display()
         {
             const string tradeNumber = "GLMS-20260701-0006";
+            DbDiagnoseGuard.RequireTestDb();
             YLContext db;
             try { db = DbContextFactory.GetYLDbContext(); }
             catch (Exception ex) { Assert.Inconclusive($"无法连接测试库：{ex.Message}"); return; }

UnitTestProject/Modules/SwapModule/GLMS20260703CloseInterestTest.cs

@@ -209,10 +209,10 @@ namespace YLErp.Modules.SwapModule
                 CloseDate, CloseDate,                       // valueDate / unwindDate
                 new List<eod_swap_position>(),              // eodPositions（空）
                 new List<swap_position> { position },
-                Notional, Notional, Notional, Notional,     // posiNotional / long / short / closePosiNotional
+                Notional, Notional,                          // posiNotional / closePosiNotional
                 1m,                                         // closePercent
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0m, Notional,                 // tdClose / needPrice / grossPrice / orginPv
+                false, Notional,                          // tdClose / orginPv
                 false, settment: false, newCalcLast: false, closeList: null);
             Assert.AreEqual(1, interests.Count);
             return interests[0];

UnitTestProject/Modules/SwapModule/GLMS20260805ClosePercentDiffDiagnoseTest.cs

@@ -32,6 +32,7 @@ namespace YLErp.Modules.SwapModule
         [TestCategory("DbDiagnose")]
         public void Record_RealSnapshot()
         {
+            DbDiagnoseGuard.RequireTestDb();
             YLContext db;
             try { db = DbContextFactory.GetYLDbContext(); }
             catch (Exception ex) { Assert.Inconclusive($"无法连接测试库：{ex.Message}"); return; }
@@ -193,6 +194,7 @@ namespace YLErp.Modules.SwapModule
         [TestCategory("DbDiagnose")]
         public void Diagnose_100vs40_InterestDiff()
         {
+            DbDiagnoseGuard.RequireTestDb();
             YLContext db;
             try { db = DbContextFactory.GetYLDbContext(); }
             catch (Exception ex) { Assert.Inconclusive($"无法连接测试库：{ex.Message}"); return; }
@@ -246,8 +248,19 @@ namespace YLErp.Modules.SwapModule
             var valueDate = DateTime.Today;
             var unwindDate = DateTime.Today;
 
-            var interests100 = new SwapDealService(user).GetUnwindInterests(valueDate, unwindDate, td.id, cp100_B, (int)SwapEventTypeEnum.平仓);
-            var interests40 = new SwapDealService(user).GetUnwindInterests(valueDate, unwindDate, td.id, cp40_B, (int)SwapEventTypeEnum.平仓);
+            // FR007 fixing 是外部数据依赖：非交易日/数据未发布时取价会抛 Exception。
+            // 与"连不上库自动 Inconclusive"同语义——外部数据不可用不应判为测试失败。
+            List<swap_flow_event> interests100, interests40;
+            try
+            {
+                interests100 = new SwapDealService(user).GetUnwindInterests(valueDate, unwindDate, td.id, cp100_B, (int)SwapEventTypeEnum.平仓);
+                interests40 = new SwapDealService(user).GetUnwindInterests(valueDate, unwindDate, td.id, cp40_B, (int)SwapEventTypeEnum.平仓);
+            }
+            catch (Exception ex) when (ex.Message.Contains("获取不到") && ex.Message.Contains("价格"))
+            {
+                Assert.Inconclusive($"FR007 fixing 数据不可用（{valueDate:yyyy-MM-dd} 非交易日或数据未发布）：{ex.Message}");
+                return;
+            }
 
             PrintInterestComparison(interests100, interests40, cp100_B, cp40_B);
         }

UnitTestProject/Modules/SwapModule/GLMS20260817Fr007UnwindMorningTest.cs

@@ -0,0 +1,603 @@
+using Newtonsoft.Json;
+using YLErp.DBModels.Enums;
+
+namespace YLErp.Modules.SwapModule
+{
+    /// <summary>
+    /// EQD-6968 FR007 不算尾平仓"上午未发布"误拦截 —— 修复后回归套件（内存，不连库）。
+    /// 任务编号 EQD-6968；现象报告日 2026-08-17。参照 GLMS20260703CloseInterestTest 内存 FR007 写法。
+    ///
+    /// 设计：所有场景经单一 Run 运行器驱动真实 GetInterests 平仓利息路径；
+    /// 内存 StubSwapDealService 重写 TryGetFloatRate 按日期返回 FR007（缺失即返回 false → 触发取价失败）。
+    /// 覆盖两条计息路径（复利 CalcDailyCompoundInterest / 单利 CalcDailySimpleInterest）共用的修复点 BuildSegmentRates，
+    /// 以及全平重放分支、非整倍数边界、数值一致性（"跳过取价=沿用上一重置日利率"）。
+    ///
+    /// 核心语义：算头不算尾(calcLast=false)时 endDate 当天不计息，其 FR007 利率不参与计息。
+    /// 缺价时跳过取价（currentFloat 保持不变），不回退取其他日期利率，不告警。
+    ///
+    /// 守卫矩阵（防"放宽过头"，对应 EQD-6968 方案一四场景）：
+    /// Guard_*：算尾("11"或newCalcLast=true)+当日重置日+当日缺价 → 必须仍拦截（正确依赖）；
+    /// PrevBizDay_*：interest_rule=-1（前一营业日基准）→ 取价日回拨，当日未发布也放行（场景2）；
+    /// TailCalced_NonResetDay_*：算尾+当日非重置日 → 当日价未消费，缺价放行（场景3）。
+    /// </summary>
+    [TestClass]
+    public class GLMS20260817Fr007UnwindMorningTest
+    {
+        private static readonly Dictionary<DateTime, double> Fr007Market = new()
+        {
+            [new DateTime(2026, 7, 6)] = 0.0142,
+            [new DateTime(2026, 7, 13)] = 0.01425,
+            [new DateTime(2026, 7, 20)] = 0.0143,
+        };
+        /// <summary>interest_rule=-1（前一营业日基准）取价日市场：重置日 7/6、7/13、7/20（周一）
+        /// 经 GetFixingDate 回拨至前一营业日 7/3、7/10、7/17（周五）。
+        /// 同时供未回拨的 7/5、7/12、7/19（周日）：QDP "chn" 日历在测试进程内可能被其他用例替换为
+        /// "全营业日"退化态（全量运行实测 GetNonHolidayDefore(7/19)=7/19 不回拨），
+        /// 两套日期都供价使本套件对进程内日历状态不敏感——被测对象是取价放宽语义，不是日历本身。</summary>
+        private static readonly Dictionary<DateTime, double> Fr007MarketPrevBizDay = new()
+        {
+            [new DateTime(2026, 7, 3)] = 0.0142,
+            [new DateTime(2026, 7, 5)] = 0.0142,
+            [new DateTime(2026, 7, 10)] = 0.01425,
+            [new DateTime(2026, 7, 12)] = 0.01425,
+            [new DateTime(2026, 7, 17)] = 0.0143,
+            [new DateTime(2026, 7, 19)] = 0.0143,
+        };
+        private const double PreviousResetRate = 0.01425;
+
+        private const decimal Notional = 279486108.21m;
+        private const int AnnualDays = 365;
+        private const decimal Spread = -0.0155m;
+        private static readonly DateTime StartDate = new(2026, 7, 6);
+        private static readonly DateTime TradeDate = new(2026, 7, 3);
+        private static readonly DateTime CloseDate = new(2026, 7, 20);
+        private static readonly DateTime NonIntCloseDate = new(2026, 7, 22);
+
+        private sealed class StubSwapDealService : SwapDealService
+        {
+            private readonly HashSet<DateTime> _omit;
+            private readonly double _closeRate;
+            private readonly Dictionary<DateTime, double> _market;
+            public readonly List<DateTime> PricedDates = new();
+
+            public StubSwapDealService(OptUserInfo optUser, IEnumerable<DateTime> omit, double closeRate = 0.0143,
+                Dictionary<DateTime, double> market = null)
+                : base(optUser)
+            {
+                _omit = new HashSet<DateTime>(omit.Select(d => d.Date));
+                _closeRate = closeRate;
+                _market = market;
+            }
+
+            protected override bool TryGetFloatRate(DateTime valueDate, string underlyingCode, out double rate)
+            {
+                rate = 0d;
+                if (underlyingCode != "FR007") return false;
+                var map = new Dictionary<DateTime, double>(_market ?? Fr007Market) { [CloseDate] = _closeRate };
+                if (_omit.Contains(valueDate.Date)) return false;
+                if (map.TryGetValue(valueDate.Date, out rate))
+                {
+                    PricedDates.Add(valueDate.Date);
+                    return true;
+                }
+                return false;
+            }
+
+            // 内存世界无历史结息流水，consumedInterest=0（与本类"内存，不连库"声明一致；否则复利路径偷连 96 库）
+            public override decimal GetConsumedInterest(int tradeId, long positionId, DateTime beforeDate) => 0m;
+        }
+
+        private sealed class Outcome
+        {
+            public swap_flow_event Fe;
+            public Exception Ex;
+            public StubSwapDealService Svc;
+            public bool Threw => Ex != null;
+        }
+
+        private static OptUserInfo MakeOptUser() =>
+            new(0, nameof(GLMS20260817Fr007UnwindMorningTest), OptUserFrom.UnitTest);
+
+        private static trade BuildTrade(DateTime closeDate, string calcMode = "10", DateTime? exerciseDate = null)
+        {
+            var extend = new trade_extend
+            {
+                TradeId = 1,
+                ExtendJson = JsonConvert.SerializeObject(new TradeExtendJson
+                {
+                    AnnualDays = AnnualDays,
+                    InterestCalcMode = calcMode,
+                    SettlementRules = 0
+                })
+            };
+            return new trade
+            {
+                id = 1,
+                TradeNumber = "GLMS-20260817-FR007-MORNING",
+                ClientId = 999998,
+                TradeType = "债券TRS",
+                TradeDate = TradeDate,
+                StartDate = StartDate,
+                ExerciseDate = exerciseDate ?? closeDate.AddDays(1),
+                TradeStatus = "已平仓",
+                ValidState = "Valid",
+                trade_extend = extend
+            };
+        }
+
+        private static swap_position BuildPosition(InterestTypeEnum interestType, DateTime closeDate, int restDays = 7,
+            int interestRule = 0)
+        {
+            var intervalModels = new List<IntervalModel>
+            {
+                new IntervalModel { Date = closeDate, Rate = Spread, Settlement = 0 }
+            };
+            return new swap_position
+            {
+                id = 1001,
+                SwapTradeId = 1,
+                PositionType = (int)PositionTypeFlag.Unknown,
+                InterestDirection = (int)SwapDirectionEnum.支付,
+                InterestMode = (int)InterestModeEnum.标的期初全价,
+                InterestRateDefault = Spread,
+                InterestPrincipalFix = Notional,
+                PosiStartDate = StartDate,
+                PosiMatuirityDate = closeDate,
+                IsInitial = true,
+                Invalid = false,
+                InterestType = (int)interestType,
+                IsAnnualized = true,
+                interest_rest_days = restDays,
+                interest_rule = interestRule,
+                FloatRateUnderlyingCode = "FR007",
+                FloatRate = 0m,
+                PosiNotionalValue = Notional,
+                UnderlyingCode = "2500002.IB",
+                InterestSwapInterval = JsonConvert.SerializeObject(intervalModels)
+            };
+        }
+
+        private static eod_swap_position BuildPreEod(DateTime valueDate, decimal floatRate = 0.01425m)
+        {
+            return new eod_swap_position
+            {
+                id = 5001,
+                PositionId = 1001,
+                ValueDate = valueDate,
+                FloatRate = floatRate,
+                InterestProfitSum = -100000m,
+                TdInterestPrincipal = Notional,
+                InterestIncomeSum = -150000m
+            };
+        }
+
+        private static Outcome Run(
+            InterestTypeEnum interestType,
+            bool includeCloseDate,
+            DateTime? closeDate = null,
+            int restDays = 7,
+            eod_swap_position preEod = null,
+            decimal closePrecent = 1m,
+            DateTime? omitDate = null,
+            double closeRate = 0.0143,
+            string calcMode = "10",
+            int interestRule = 0,
+            bool newCalcLast = false,
+            Dictionary<DateTime, double> market = null,
+            DateTime? omitDate2 = null,
+            bool settment = false,
+            DateTime? exerciseDate = null)
+        {
+            var cd = closeDate ?? CloseDate;
+            var omit = new HashSet<DateTime>();
+            if (omitDate.HasValue || omitDate2.HasValue)
+            {
+                if (omitDate.HasValue) omit.Add(omitDate.Value.Date);
+                if (omitDate2.HasValue) omit.Add(omitDate2.Value.Date);
+            }
+            else if (!includeCloseDate) omit.Add(cd.Date);
+
+            var svc = new StubSwapDealService(MakeOptUser(), omit, closeRate, market);
+            var td = BuildTrade(cd, calcMode, exerciseDate);
+            var position = BuildPosition(interestType, cd, restDays, interestRule);
+            var eodList = preEod == null
+                ? new List<eod_swap_position>()
+                : new List<eod_swap_position> { preEod };
+            try
+            {
+                var interests = svc.GetInterests(
+                    td, td.trade_extend, cd, cd, eodList,
+                    new List<swap_position> { position },
+                    Notional, Notional, closePrecent,
+                    (int)SwapEventTypeEnum.平仓, false, Notional,
+                    false, settment: settment, newCalcLast: newCalcLast, closeList: null);
+                Assert.AreEqual(1, interests.Count, "应返回恰好 1 条利息事件");
+                return new Outcome { Fe = interests[0], Svc = svc };
+            }
+            catch (Exception ex)
+            {
+                return new Outcome { Ex = ex };
+            }
+        }
+
+        private static void AssertNoThrow(Outcome o, string scenario)
+        {
+            Assert.IsFalse(o.Threw, scenario + " 不应因平仓日 FR007 未发布而抛异常：" + o.Ex?.Message);
+            Assert.IsNotNull(o.Fe, scenario + " 应返回利息事件");
+            Assert.IsFalse(o.Fe.InterestAmount == 0 && o.Fe.FloatRate == 0, scenario + " 利息不应全为零");
+        }
+
+        [TestMethod]
+        public void Red_Compound_WithoutCloseDateFr007_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: false), "复利-无preEod-缺平仓日");
+        }
+
+        [TestMethod]
+        public void Baseline_Compound_WithCloseDateFr007_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: true), "复利-无preEod-有平仓日");
+        }
+
+        [TestMethod]
+        public void Red_Compound_FullClose_WithPreEod_WithoutCloseDateFr007_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: false, preEod: BuildPreEod(new DateTime(2026, 7, 13))),
+                "复利-全平重放-缺平仓日");
+        }
+
+        [TestMethod]
+        public void Baseline_Compound_FullClose_WithPreEod_WithCloseDateFr007_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: true, preEod: BuildPreEod(new DateTime(2026, 7, 13))),
+                "复利-全平重放-有平仓日");
+        }
+
+        [TestMethod]
+        public void Red_Simple_WithoutPreEod_WithoutCloseDateFr007_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.单利, includeCloseDate: false), "单利-无preEod-缺平仓日");
+        }
+
+        [TestMethod]
+        public void Red_Simple_WithPreEod_WithoutCloseDateFr007_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.单利, includeCloseDate: false, preEod: BuildPreEod(StartDate)),
+                "单利-带preEod-缺平仓日");
+        }
+
+        [TestMethod]
+        public void Consistency_Compound_SkipEqualsPreviousRate()
+        {
+            var worldA = Run(InterestTypeEnum.复利, includeCloseDate: false);
+            var worldB = Run(InterestTypeEnum.复利, includeCloseDate: true, closeRate: PreviousResetRate);
+            Assert.IsFalse(worldA.Threw, "世界A 不应抛：" + worldA.Ex?.Message);
+            Assert.IsFalse(worldB.Threw, "世界B 不应抛：" + worldB.Ex?.Message);
+            Assert.AreEqual(worldA.Fe.InterestAmount, worldB.Fe.InterestAmount,
+                "缺价跳过取价世界 应与 显式置上一期利率世界 利息完全一致（该日利率不参与计息，沿用上期）");
+        }
+
+        [TestMethod]
+        public void Consistency_Simple_SkipEqualsPreviousRate()
+        {
+            var worldA = Run(InterestTypeEnum.单利, includeCloseDate: false, preEod: BuildPreEod(StartDate));
+            var worldB = Run(InterestTypeEnum.单利, includeCloseDate: true, preEod: BuildPreEod(StartDate), closeRate: PreviousResetRate);
+            Assert.IsFalse(worldA.Threw, "世界A 不应抛：" + worldA.Ex?.Message);
+            Assert.IsFalse(worldB.Threw, "世界B 不应抛：" + worldB.Ex?.Message);
+            Assert.AreEqual(worldA.Fe.InterestAmount, worldB.Fe.InterestAmount,
+                "单利：缺价跳过取价世界 应与 显式置上一期利率世界 利息完全一致（该日利率不参与计息）");
+        }
+
+        [TestMethod]
+        public void Boundary_Compound_NonIntegerMultiple_LastResetStillPrices()
+        {
+            var o = Run(InterestTypeEnum.复利, includeCloseDate: false, closeDate: NonIntCloseDate, omitDate: new DateTime(2026, 7, 20));
+            Assert.IsTrue(o.Threw, "非整倍数时末段重置日 7/20 缺价应抛异常（该日利率被消费）");
+            StringAssert.Contains(o.Ex.Message, "FR007");
+        }
+
+        [TestMethod]
+        public void Boundary_Compound_NonIntegerMultiple_WithCloseDateSucceeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: true, closeDate: NonIntCloseDate),
+                "非整倍数-有7/20价-应成功");
+        }
+
+        [TestMethod]
+        public void Boundary_Simple_NonIntegerMultiple_LastResetStillPrices()
+        {
+            var o = Run(InterestTypeEnum.单利, includeCloseDate: false, closeDate: NonIntCloseDate,
+                preEod: BuildPreEod(StartDate), omitDate: new DateTime(2026, 7, 20));
+            Assert.IsTrue(o.Threw, "单利 非整倍数时末段重置日 7/20 缺价应抛异常");
+            StringAssert.Contains(o.Ex.Message, "FR007");
+        }
+
+        [TestMethod]
+        public void Boundary_Simple_NonIntegerMultiple_WithCloseDateSucceeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.单利, includeCloseDate: true, closeDate: NonIntCloseDate, preEod: BuildPreEod(StartDate)),
+                "单利-非整倍数-有7/20价-应成功");
+        }
+
+        // ── 算尾守卫（EQD-6968 方案一场景4：算尾+当前营业日+当日重置日+当日缺价 → 必须仍拦截）──
+        // 放宽只针对"该日利率不参与计息"的场景；算尾时当日利率被消费，缺价拦截是正确依赖，不得误放。
+
+        [TestMethod]
+        public void Guard_TailCalced_ResetDayFr007Missing_StillThrows()
+        {
+            var o = Run(InterestTypeEnum.复利, includeCloseDate: false, calcMode: "11",
+                preEod: BuildPreEod(new DateTime(2026, 7, 13)));
+            Assert.IsTrue(o.Threw, "算尾(11)+当日重置日+当日缺价 → 应拦截（该日利率被消费）");
+            StringAssert.Contains(o.Ex.Message, "FR007");
+        }
+
+        [TestMethod]
+        public void Guard_TailCalced_Simple_ResetDayFr007Missing_StillThrows()
+        {
+            var o = Run(InterestTypeEnum.单利, includeCloseDate: false, calcMode: "11",
+                preEod: BuildPreEod(StartDate));
+            Assert.IsTrue(o.Threw, "单利 算尾(11)+当日重置日+当日缺价 → 应拦截");
+            StringAssert.Contains(o.Ex.Message, "FR007");
+        }
+
+        [TestMethod]
+        public void Baseline_TailCalced_ResetDayFr007Present_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: true, calcMode: "11",
+                preEod: BuildPreEod(new DateTime(2026, 7, 13))),
+                "算尾(11)+当日重置日+当日有价 → 应成功");
+        }
+
+        // ── newCalcLast 守卫：交易本身"10"不算尾，但本次平仓显式指定算尾 → effectiveCalcLast=true → 缺价仍拦截 ──
+
+        [TestMethod]
+        public void Guard_NewCalcLast_OverridesToTail_MissingPrice_StillThrows()
+        {
+            var o = Run(InterestTypeEnum.复利, includeCloseDate: false, newCalcLast: true,
+                preEod: BuildPreEod(new DateTime(2026, 7, 13)));
+            Assert.IsTrue(o.Threw, "不算尾(10)+本次平仓指定算尾+当日缺价 → 应按算尾拦截");
+            StringAssert.Contains(o.Ex.Message, "FR007");
+        }
+
+        [TestMethod]
+        public void Baseline_NewCalcLast_OverridesToTail_WithPrice_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: true, newCalcLast: true,
+                preEod: BuildPreEod(new DateTime(2026, 7, 13))),
+                "不算尾(10)+本次平仓指定算尾+当日有价 → 应成功");
+        }
+
+        // ── 前一营业日基准（interest_rule=-1，EQD-6968 方案一场景2）──
+        // 取价日=重置日前一营业日，当日(7/20)定盘未发布也用不到 → 放行；
+        // 但取价日(前一营业日)本身缺价 → 仍是真实依赖，必须拦截。
+
+        [TestMethod]
+        public void PrevBizDay_TailCalced_ResetDayTodayMissing_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: true, calcMode: "11", interestRule: -1,
+                omitDate: CloseDate, market: Fr007MarketPrevBizDay, preEod: BuildPreEod(new DateTime(2026, 7, 13))),
+                "算尾(11)+前一营业日基准+当日(7/20)未发布 → 应放行（取价日7/17已发布）");
+        }
+
+        [TestMethod]
+        public void PrevBizDay_TailCalced_Simple_ResetDayTodayMissing_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.单利, includeCloseDate: true, calcMode: "11", interestRule: -1,
+                omitDate: CloseDate, market: Fr007MarketPrevBizDay, preEod: BuildPreEod(new DateTime(2026, 7, 13))),
+                "单利 算尾(11)+前一营业日基准+当日未发布 → 应放行");
+        }
+
+        [TestMethod]
+        public void PrevBizDay_NoTail_ResetDayTodayMissing_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: true, interestRule: -1,
+                omitDate: CloseDate, market: Fr007MarketPrevBizDay, preEod: BuildPreEod(new DateTime(2026, 7, 13))),
+                "不算尾(10)+前一营业日基准+当日未发布 → 应放行");
+        }
+
+        [TestMethod]
+        public void PrevBizDay_TailCalced_FixingDayMissing_StillThrows()
+        {
+            // 取价日候选 7/17(周五，正常日历回拨) 与 7/19(周日，退化日历不回拨) 都扣掉 → 两种日历态下都缺价
+            var o = Run(InterestTypeEnum.复利, includeCloseDate: true, calcMode: "11", interestRule: -1,
+                omitDate: new DateTime(2026, 7, 17), omitDate2: new DateTime(2026, 7, 19),
+                market: Fr007MarketPrevBizDay, preEod: BuildPreEod(new DateTime(2026, 7, 13)));
+            Assert.IsTrue(o.Threw, "算尾(11)+前一营业日基准+取价日本身缺价 → 仍应拦截（真实依赖）");
+            StringAssert.Contains(o.Ex.Message, "FR007");
+        }
+
+        // ── 算尾+当前营业日+当日非重置日（EQD-6968 方案一场景3）──
+        // 当日价未被任何计息段消费（末段重置日7/20是历史日），当日(7/22)缺价 → 放行。
+
+        [TestMethod]
+        public void TailCalced_NonResetDay_TodayMissing_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: true, calcMode: "11", closeDate: NonIntCloseDate,
+                preEod: BuildPreEod(new DateTime(2026, 7, 13))),
+                "算尾(11)+当日非重置日+当日(7/22)缺价 → 应放行（非重置日不取当日价）");
+        }
+
+        [TestMethod]
+        public void TailCalced_NonResetDay_Simple_TodayMissing_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.单利, includeCloseDate: true, calcMode: "11", closeDate: NonIntCloseDate,
+                preEod: BuildPreEod(new DateTime(2026, 7, 13))),
+                "单利 算尾(11)+当日非重置日+当日缺价 → 应放行");
+        }
+
+        // ── 不算头不算尾(calcMode="00")：CalcFirst=false 组合 ──
+        // 对尾日 FR007 行为与"10"一致(calcLast 同 false)；另以单利精确断言钉 CalcFirst 语义——
+        // "00" 比"10"恰好少计开始日一天的利息（单利无基数效应，差值可精确到分毫）。
+
+        [TestMethod]
+        public void Red_Compound_NoHeadNoTail_WithoutCloseDateFr007_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: false, calcMode: "00",
+                preEod: BuildPreEod(new DateTime(2026, 7, 13))),
+                "不算头不算尾(00)+缺平仓日价 → 应放行（与10同口径，尾日不参与计息）");
+        }
+
+        [TestMethod]
+        public void CalcFirst_Simple_NoHeadDropsExactlyStartDayInterest()
+        {
+            // 无日终快照时 priorValueDate=开始日-1（首重置日 7/6 恒在取价窗内），两世界首段利率同为 7/6 定盘；
+            // "00" 比"10"恰好少计开始日一天——精确断言钉 CalcFirst 边界与首重置日取价窗。
+            var w10 = Run(InterestTypeEnum.单利, includeCloseDate: true, calcMode: "10");
+            var w00 = Run(InterestTypeEnum.单利, includeCloseDate: true, calcMode: "00");
+            Assert.IsFalse(w10.Threw, "10 不应抛：" + w10.Ex?.Message);
+            Assert.IsFalse(w00.Threw, "00 不应抛：" + w00.Ex?.Message);
+            // 开始日 7/6 属首段：all-in = spread(-0.0155) + 定盘(0.0142) = -0.0013；
+            // 单利下 00 与 10 的利息差 = 恰好首日一天利息（年化 A365）。
+            var expectedStartDayInterest = Notional * (Spread + 0.0142m) / AnnualDays;
+            Assert.AreEqual(expectedStartDayInterest, w10.Fe.InterestAmount - w00.Fe.InterestAmount, 0.0000001m,
+                "不算头(00)应恰好少计开始日一天利息（CalcFirst 回归锚）");
+        }
+
+        // ── 事件利率确定性（EQD-6968 自洽化）：排除日不取价，事件利率=末段已消费利率 ──
+        // 同一交易同一天，尾日价缺(上午平仓) vs 有(下午平仓)：金额与落库 FloatRate 必须完全一致，
+        // 杜绝"记录利率取决于点击时刻"。
+
+        [TestMethod]
+        public void Determinism_NoTail_EventFloatRateIndependentOfPublishTime()
+        {
+            var wMorning = Run(InterestTypeEnum.复利, includeCloseDate: false, calcMode: "10",
+                preEod: BuildPreEod(new DateTime(2026, 7, 13)));
+            var wAfternoon = Run(InterestTypeEnum.复利, includeCloseDate: true, calcMode: "10", closeRate: 0.0199,
+                preEod: BuildPreEod(new DateTime(2026, 7, 13)));
+            Assert.IsFalse(wMorning.Threw, "上午世界不应抛：" + wMorning.Ex?.Message);
+            Assert.IsFalse(wAfternoon.Threw, "下午世界不应抛：" + wAfternoon.Ex?.Message);
+            Assert.AreEqual(wMorning.Fe.InterestAmount, wAfternoon.Fe.InterestAmount,
+                "金额不应因尾日价发布与否而变化（尾日利率零消费）");
+            Assert.AreEqual(0.01425m, wMorning.Fe.FloatRate,
+                "事件利率=末段已消费利率（7/13定盘 0.01425），非尾日价");
+            Assert.AreEqual(wMorning.Fe.FloatRate, wAfternoon.Fe.FloatRate,
+                "事件利率必须与平仓时刻(尾日价发布前后)无关");
+        }
+
+        // ── 快照利率携带契约（carry-forward）：带 preEod 时不重复取 ≤ValueDate 的重置日 ──
+        // fetchAfterDate=preEod.ValueDate + seed=preEod.FloatRate 是设计分工：≤上一日终的重置日
+        // 沿用快照携带的"截至 ValueDate 生效利率"（真实 EOD 快照由当日重置日再定盘写入），
+        // >上一日终的重新取价。与无日终场景的根本区别：种子有正确来源，不需要强制重取首重置日。
+
+        [TestMethod]
+        public void CarryForward_Simple_NoHead_PreEodAtStartCarriesFirstPeriodRate()
+        {
+            // preEod.ValueDate=开始日(7/6)，FloatRate=7/6定盘0.0142（模拟开始日EOD快照的真实语义）
+            var o = Run(InterestTypeEnum.单利, includeCloseDate: true, calcMode: "00",
+                closeDate: new DateTime(2026, 7, 10), preEod: BuildPreEod(StartDate, 0.0142m));
+            Assert.IsFalse(o.Threw, "不应抛：" + o.Ex?.Message);
+            Assert.AreEqual(0, o.Svc.PricedDates.Count,
+                "≤上一日终(7/6)的重置日不重复取价——首段利率由快照携带(carry-forward 契约)");
+            Assert.AreEqual(0.0142m, o.Fe.FloatRate,
+                "首段(也是末段)利率=快照携带的 7/6 定盘");
+            // 不算头不算尾：计息日 [7/7,7/10) 共 3 天 @ (spread+0.0142)；单利重放含上日待实现(-100000)
+            Assert.AreEqual(-100000m + Notional * (Spread + 0.0142m) * 3m / AnnualDays, o.Fe.InterestAmount, 0.0000001m,
+                "金额=上日待实现+3天×(spread+快照利率)，首段未误用种子外的任何值");
+        }
+
+        [TestMethod]
+        public void Eod_NoHead_StartDay_SnapshotRateCarriesFirstFixing()
+        {
+            // 链条起点钉死：开始日当天 EOD（"00"，窗口为空 interestStart=7/7>interestEnd=7/6）——
+            // 窗口为空时"不算尾不取价"分支不命中，走正常取价，快照 FloatRate=开始日定盘。
+            // 次日重放才能以 fetchAfter=开始日 + 携带利率=开始日定盘 正确续算（见上一用例）。
+            var o = Run(InterestTypeEnum.单利, includeCloseDate: true, calcMode: "00",
+                closeDate: StartDate, settment: true);
+            AssertNoThrow(o, "开始日EOD(00) 不应抛");
+            Assert.AreEqual(0.0142m, o.Fe.FloatRate,
+                "开始日EOD快照利率=当日(首重置日)定盘——窗口为空不触发不取价分支");
+        }
+
+        // ── 窗口判定语义（InitInterestDate 直测；死子句 td.StartDate>interestStart 删除后的边界钉死）──
+
+        [TestMethod]
+        public void WindowSemantics_NoHeadStartDay_EmptyViaFirstClause()
+        {
+            var svc = new StubSwapDealService(MakeOptUser(), new HashSet<DateTime>());
+            var td = BuildTrade(StartDate, "00"); // ExerciseDate=7/7
+            bool empty = svc.InitInterestDate(StartDate, null, td, tdClose: false,
+                out var start, out var end);
+            Assert.IsTrue(empty, "不算头首日：interestStart=7/7 > interestEnd=7/6 → 窗口为空（第一子句兜住）");
+            Assert.AreEqual(StartDate, end);
+        }
+
+        [TestMethod]
+        public void WindowSemantics_SameDaySettle_EqualDates_NotEmpty()
+        {
+            var svc = new StubSwapDealService(MakeOptUser(), new HashSet<DateTime>());
+            var td = BuildTrade(new DateTime(2026, 7, 10), "10"); // ExerciseDate=7/11
+            bool empty = svc.InitInterestDate(new DateTime(2026, 7, 10), new DateTime(2026, 7, 10), td, tdClose: false,
+                out var start, out var end);
+            Assert.IsFalse(empty, "当日已结息(日期相等)窗口非空——利息归零由 GetInterests closeList 净额层处理，不在此判定");
+            Assert.AreEqual(new DateTime(2026, 7, 10), start);
+            Assert.AreEqual(new DateTime(2026, 7, 10), end);
+        }
+
+        [TestMethod]
+        public void WindowSemantics_SameDaySettle_OnMaturityRollback_Empty()
+        {
+            var svc = new StubSwapDealService(MakeOptUser(), new HashSet<DateTime>());
+            var td = BuildTrade(CloseDate, "00", exerciseDate: CloseDate); // 到期日=7/20 且不算尾
+            bool empty = svc.InitInterestDate(CloseDate, CloseDate, td, tdClose: false,
+                out var start, out var end);
+            Assert.IsTrue(empty, "当日已结息+到期日不算尾回拨：interestStart=7/20 > interestEnd=7/19 → 窗口为空");
+        }
+
+        // ── EOD 收盘归档路径（settment=true，此前全套件仅覆盖盘中 settment:false）──
+        // EOD 不取尾日价的依赖链：InitInterestDate 到期日回拨(endDate=D-1) + CalcEodInterest 的
+        // calcToday=false(valueDate==到期日且不算尾) 整体跳过 ByEod 重算——ByEod 的取价
+        // (CalcDailyCompoundInterestByEod/CalcDailySimpleInterestByEod 的 isResetDay→ResolveFloatRate)
+        // 不看 calcLast，任何一环回归都会让到期日收盘重新索要尾日 FR007。以下三例钉死该链。
+
+        [TestMethod]
+        public void Eod_NoTail_MaturityDayFr007Missing_Succeeds()
+        {
+            // 到期日=7/20(重置日)当天收盘，尾日价未发布 → 不算尾应放行（回拨+跳过重算两道闸）
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: false, calcMode: "10",
+                exerciseDate: CloseDate, preEod: BuildPreEod(new DateTime(2026, 7, 13)), settment: true),
+                "EOD 不算尾(10)+到期日缺价 → 应放行（尾日不参与计息，不得取价）");
+        }
+
+        [TestMethod]
+        public void Eod_Tail_MaturityDayFr007Missing_StillThrows()
+        {
+            var o = Run(InterestTypeEnum.复利, includeCloseDate: false, calcMode: "11",
+                exerciseDate: CloseDate, preEod: BuildPreEod(new DateTime(2026, 7, 13)), settment: true);
+            Assert.IsTrue(o.Threw, "EOD 算尾(11)+到期日(重置日)缺价 → 应拦截（该日利率被消费）");
+            StringAssert.Contains(o.Ex.Message, "FR007");
+        }
+
+        [TestMethod]
+        public void Eod_MidTradeResetDayFr007Missing_StillThrows()
+        {
+            // 非到期日的盘中重置日：不算尾也不豁免——新利率自当日起被持续持仓消费，ByEod 必须取到
+            var o = Run(InterestTypeEnum.复利, includeCloseDate: false, calcMode: "10",
+                preEod: BuildPreEod(new DateTime(2026, 7, 13)), settment: true);
+            Assert.IsTrue(o.Threw, "EOD 不算尾(10)+非到期重置日(7/20)缺价 → 仍应拦截（ByEod 取价链，真实依赖）");
+            StringAssert.Contains(o.Ex.Message, "FR007");
+        }
+
+        // ── 到期日当天全平：replayEndDate=endDate+1 补计分支（exclusionStart 的存在理由）──
+        // 不算尾时 InitInterestDate 把 endDate 回拨一天；最终全平的历史差分重放需把窗口补回真实
+        // 平仓/到期日（replayEndDate=endDate+1），但该边界日的定盘经 exclusionStart 标记为
+        // "有价则取/缺价跳过"——否则到期日上午全平会被尾日价误拦（EQD-6968 在到期日的镜像场景）。
+
+        [TestMethod]
+        public void FinalClose_OnMaturityDay_NoTail_CloseDayFr007Missing_Succeeds()
+        {
+            AssertNoThrow(Run(InterestTypeEnum.复利, includeCloseDate: false, calcMode: "10",
+                exerciseDate: CloseDate, preEod: BuildPreEod(new DateTime(2026, 7, 13))),
+                "到期日当天全平+不算尾+到期日(重置日)缺价 → 应放行（补计重放的边界日不索取定盘）");
+        }
+
+        [TestMethod]
+        public void Guard_FinalClose_OnMaturityDay_Tail_CloseDayFr007Missing_StillThrows()
+        {
+            var o = Run(InterestTypeEnum.复利, includeCloseDate: false, calcMode: "11",
+                exerciseDate: CloseDate, preEod: BuildPreEod(new DateTime(2026, 7, 13)));
+            Assert.IsTrue(o.Threw, "到期日当天全平+算尾+到期日缺价 → 应拦截（该日利率被消费）");
+            StringAssert.Contains(o.Ex.Message, "FR007");
+        }
+    }
+}
+

UnitTestProject/Modules/SwapModule/GLMS20260819Fr007TradeDiscoveryTest.cs

@@ -0,0 +1,120 @@
+using System;
+using System.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using YLErp.DBModels;
+
+namespace YLErp.Modules.SwapModule
+{
+    /// <summary>
+    /// EQD-6968 UAT 辅助：从 96 真实库抽取"在途 FR007 互换"具体历史交易，
+    /// 打印完整交易要素，供 UAT 直接选用（替代手动猜要素）。
+    /// 标 [Ignore]，手动跑一次即可；依赖 app.config 中 xray 连接（你的环境已指向 96）。
+    /// 复用 GLMS20260105GoldenTest 的连库写法：DbContextFactory.GetYLDbContext()。
+    /// 用原生 ADO.NET 读结果，规避 EF 实体映射类型踩坑。
+    /// </summary>
+    [TestClass]
+    public class GLMS20260819Fr007TradeDiscoveryTest
+    {
+        private const string TradeSql = @"
+SELECT
+    t.id                                                              AS TradeId,
+    p.id                                                              AS PositionId,
+    t.TradeNumber                                                     AS TradeNumber,
+    t.StartDate                                                       AS StartDate,
+    t.ExerciseDate                                                    AS ExerciseDate,
+    t.ValidState                                                      AS ValidState,
+    p.interest_rest_days                                              AS interest_rest_days,
+    p.interest_rule                                                   AS interest_rule,
+    p.FloatRateUnderlyingCode                                         AS FloatRateUnderlyingCode,
+    p.IsInitial                                                       AS IsInitial,
+    p.InterestType                                                    AS InterestType,
+    p.InterestMode                                                    AS InterestMode,
+    CASE WHEN te.ExtendJson LIKE '%""InterestCalcMode""%'
+         THEN SUBSTRING_INDEX(SUBSTRING_INDEX(te.ExtendJson, '""InterestCalcMode"":""', -1), '""', 1)
+         ELSE '11' END                                               AS InterestCalcMode
+FROM      trade         t
+JOIN      swap_position p  ON p.SwapTradeId = t.id
+LEFT JOIN trade_extend te  ON te.TradeId    = t.id
+WHERE     t.ValidState = 'Valid'
+  AND     p.Invalid    = 0
+  AND     p.IsInitial  = 1
+  AND     p.FloatRateUnderlyingCode = 'FR007'
+  AND     t.ExerciseDate >= CURDATE()
+ORDER BY t.StartDate;";
+
+        private const string FixingSql = @"
+SELECT ValueDate, ReferencePrice
+FROM   eod_commodity_future_price
+WHERE  FutureContractId = 'FR007'
+  AND  ValueDate >= DATE_SUB(CURDATE(), INTERVAL 30 DAY)
+ORDER BY ValueDate DESC;";
+
+        private TestContext _testContext;
+        public TestContext TestContext
+        {
+            get => _testContext;
+            set => _testContext = value;
+        }
+
+        private static string Fmt(object v) =>
+            v == null || v == DBNull.Value ? "NULL"
+            : (v is DateTime dt ? dt.ToString("yyyy-MM-dd") : v.ToString());
+
+        [TestMethod]
+        [Ignore]
+        [TestCategory("Discovery")]
+        public void Discover_InTransitFr007Trades()
+        {
+            using (var db = DbContextFactory.GetYLDbContext())
+            {
+                var conn = db.Database.GetDbConnection();
+                if (conn.State != ConnectionState.Open) conn.Open();
+                using (var cmd = conn.CreateCommand())
+                {
+                    cmd.CommandText = TradeSql;
+                    using (var reader = cmd.ExecuteReader())
+                    {
+                        int n = 0;
+                        while (reader.Read())
+                        {
+                            n++;
+                            TestContext.WriteLine(
+                                $"TradeId={reader["TradeId"]} PosId={reader["PositionId"]} No={reader["TradeNumber"]} " +
+                                $"Start={Fmt(reader["StartDate"])} Expr={Fmt(reader["ExerciseDate"])} " +
+                                $"CalcMode={Fmt(reader["InterestCalcMode"])} rule={Fmt(reader["interest_rule"])} rest={Fmt(reader["interest_rest_days"])} " +
+                                $"IntType={Fmt(reader["InterestType"])} Mode={Fmt(reader["InterestMode"])}");
+                        }
+                        TestContext.WriteLine($"=== 在途 FR007 互换共 {n} 笔 ===");
+                    }
+                }
+            }
+        }
+
+        [TestMethod]
+        [Ignore]
+        [TestCategory("Discovery")]
+        public void Discover_Fr007FixingStatus()
+        {
+            using (var db = DbContextFactory.GetYLDbContext())
+            {
+                var conn = db.Database.GetDbConnection();
+                if (conn.State != ConnectionState.Open) conn.Open();
+                using (var cmd = conn.CreateCommand())
+                {
+                    cmd.CommandText = FixingSql;
+                    using (var reader = cmd.ExecuteReader())
+                    {
+                        int n = 0;
+                        while (reader.Read())
+                        {
+                            n++;
+                            TestContext.WriteLine($"FR007 ValueDate={Fmt(reader["ValueDate"])} ReferencePrice={Fmt(reader["ReferencePrice"])}");
+                        }
+                        TestContext.WriteLine($"=== FR007 定盘近 30 天共 {n} 条 ===");
+                    }
+                }
+            }
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/GetInterestsEntrySemanticsTest.cs

@@ -0,0 +1,470 @@
+using Newtonsoft.Json;
+using YLErp.DBModels.Enums;
+
+namespace YLErp.Modules.SwapModule
+{
+    /// <summary>
+    /// GetInterests 双显式入口语义字符化测试（Step3"特判降级"的前置钉子）。
+    ///
+    /// 背景：GetIntradayUnwindInterests（盘中：平仓前剩余×实际比例）与
+    /// CalcEodPostCloseSettleInterests（EOD平仓后收盘：平仓后剩余×恒1）是同一经济事件
+    /// （部分平仓）的两套传参语义，靠 GetInterests 内 mode2 无条件覆盖 / mode9 全平兜底粘合。
+    /// 本测试钉死当前行为，使后续特判降级/语义重构有回归网：
+    ///   ① 复利×mode2：closePrincipal（特判产物）是 CalcDailyCompoundInterest 的重放本金——
+    ///      两入口 closePosiNotionalValue 均为实际平掉额 → InterestAmount 必须相等；
+    ///   ② 单利×mode2：CalcDailySimpleInterest 消费的是 posiPrincipal×closePercent——
+    ///      盘中(平仓前×比例) vs EOD(剩余×1) 数值口径可能不同，本测试【记录现状】（见各断言注释）；
+    ///   ③ mode9 全平（posi=0）：兜底覆盖生效，结息额非零。
+    ///
+    /// 数据基建复用 GetInterestsUnitTest_T0 的构建器口径（T+0，4/27起息，"11"算头算尾）。
+    /// </summary>
+    [TestClass]
+    public class GetInterestsEntrySemanticsTest
+    {
+        private const decimal Principal = 1000m;
+        private const decimal FixedRate = 0.01m;
+        private const decimal FloatRate = 0.001m;
+        private const int AnnualDays = 365;
+        private const int ResetPeriod = 3;
+
+        private static readonly DateTime TradeDate = new(2026, 4, 27);
+        private static readonly DateTime StartDate = new(2026, 4, 27);
+        private static readonly DateTime ExerciseDate = new(2027, 4, 27);
+        private static readonly DateTime UnwindDate = new(2026, 4, 30);
+
+        // 平仓前剩余 1000，平掉 30%（300），收盘后剩余 700
+        private const decimal PreClose = 1000m;
+        private const decimal Closed = 300m;
+        private const decimal Remaining = 700m;
+        private const decimal ClosePercent = 0.3m;
+
+        #region Stub（浮动利率内存取价，与 T0 同款）
+
+        private sealed class StubSwapDealService : SwapDealService
+        {
+            private readonly IReadOnlyDictionary<DateTime, double> _floatRates;
+            public StubSwapDealService(OptUserInfo optUser, IReadOnlyDictionary<DateTime, double> floatRates) : base(optUser)
+            {
+                _floatRates = floatRates;
+            }
+            protected override bool TryGetFloatRate(DateTime valueDate, string underlyingCode, out double rate)
+            {
+                if (!string.Equals(underlyingCode, "FR007", StringComparison.OrdinalIgnoreCase)) { rate = 0; return false; }
+                if (_floatRates.TryGetValue(valueDate.Date, out rate)) return true;
+                rate = 0;
+                return false;
+            }
+            // 离线自洽：本测试场景无历史已结利息，等价于此前"空库查询返回 0"的行为，
+            // 使复利路径(GetConsumedInterest)不再依赖数据库连通（YLErp_UNIT_TEST_SKIP_INITIALIZATION=1 可跑）。
+            public override decimal GetConsumedInterest(int tradeId, long positionId, DateTime beforeDate)
+                => 0m;
+        }
+
+        private static SwapDealService CreateService() => new StubSwapDealService(
+            new OptUserInfo(0, nameof(GetInterestsEntrySemanticsTest), OptUserFrom.UnitTest),
+            new Dictionary<DateTime, double>
+            {
+                [new DateTime(2026, 4, 27)] = (double)FloatRate,
+                [new DateTime(2026, 4, 28)] = (double)FloatRate,
+                [new DateTime(2026, 4, 29)] = (double)FloatRate,
+                [new DateTime(2026, 4, 30)] = (double)FloatRate,
+            });
+
+        #endregion
+
+        #region 数据构建（T0 口径）
+
+        private static trade CreateTrade()
+        {
+            var extend = new trade_extend
+            {
+                TradeId = 1,
+                ExtendJson = JsonConvert.SerializeObject(new TradeExtendJson
+                {
+                    AnnualDays = AnnualDays,
+                    InterestCalcMode = "11", // 算头算尾
+                    SettlementRules = 0
+                })
+            };
+            return new trade
+            {
+                id = 1, TradeNumber = "UT-INT-ENTRY-SEMANTICS", ClientId = 999998,
+                TradeType = "收益互换", TradeDate = TradeDate, StartDate = StartDate,
+                ExerciseDate = ExerciseDate, TradeStatus = "确认成交", ValidState = "Valid",
+                trade_extend = extend
+            };
+        }
+
+        private static swap_position CreatePosition(InterestModeEnum mode, InterestTypeEnum interestType, bool floating = false)
+        {
+            var intervalModels = new List<IntervalModel>
+            {
+                new IntervalModel { Date = ExerciseDate, Rate = FixedRate, Settlement = 0 }
+            };
+            return new swap_position
+            {
+                id = 1001, SwapTradeId = 1, PositionType = (int)PositionTypeFlag.Unknown,
+                InterestDirection = (int)SwapDirectionEnum.收取, InterestMode = (int)mode,
+                InterestRateDefault = FixedRate, InterestPrincipalFix = Principal,
+                PosiStartDate = StartDate, PosiMatuirityDate = ExerciseDate,
+                IsInitial = true, Invalid = false, InterestType = (int)interestType,
+                IsAnnualized = true, interest_rest_days = ResetPeriod, interest_rule = 0,
+                FloatRateUnderlyingCode = floating ? "FR007" : null,
+                InterestSwapInterval = JsonConvert.SerializeObject(intervalModels)
+            };
+        }
+
+        private static eod_swap_position CreatePreEod(decimal interestSum, decimal principal)
+            => new()
+            {
+                id = 1, SwapTradeId = 1, PositionId = 1001, ValueDate = new DateTime(2026, 4, 29),
+                ClientId = 999998, FloatRate = FloatRate, TdInterestPrincipal = principal,
+                PosiNotionalValue = principal, InterestIncomeSum = interestSum, InterestProfitSum = interestSum
+            };
+
+        #endregion
+
+        /// <summary>
+        /// 复利×mode2×部分平仓30%：【同请求形状⇒同额】oracle（契约目标语义，修复落地时的现成回归网）。
+        ///
+        /// 修复前（b01b485e 钉住的分歧）：盘中 0.036165（平掉额全程重放=确认书公式）vs
+        ///   EOD 0.059042（恒1 掉进全平专属分支，全腿待实现+末段增量，无契约依据，重算结果被丢弃）。
+        /// 说明：EOD 平仓后收盘走恒1惯例形状；端到端结算结果由 DI_EXCEL_SCENARIO4 家族对账确认书公式保障
+        ///   （平仓前剩余+实际平掉额+真实比例），部分平仓不再进 closePrecent==1 分支。
+        /// （最终全平=剩余额×∏利率，2026-08-18 手算复核 Excel BL/BN 均符合）。
+        /// 观察日（autoSwap=true）路径仍走 EodPostCloseSettle（剩余+恒1），:1220 为其设计语义，不在本断言范围。
+        /// </summary>
+        [TestMethod]
+        public void 复利_mode2_部分平仓_双入口契约口径一致()
+        {
+            var td = CreateTrade();
+            var position = CreatePosition(InterestModeEnum.合约名义本金规模, InterestTypeEnum.复利, floating: true);
+            var preEod = CreatePreEod(interestSum: 0.05m, principal: PreClose);
+            var eodPositions = new List<eod_swap_position> { preEod };
+            var positions = new List<swap_position> { position };
+
+            var intraday = CreateService().GetIntradayUnwindInterests(InterestCalcRequest.IntradayUnwind(
+                td, td.trade_extend, UnwindDate, UnwindDate, eodPositions, positions,
+                PreClose, Closed, ClosePercent,
+                (int)SwapEventTypeEnum.平仓, tdClose: true, orginPv: PreClose, add: true, newCalcLast: false, closeList: null));
+
+            // 契约口径形状（与盘中同形状）：平仓前剩余 1000 + 平掉额 300 + 真实比例 0.3
+            var eodPostClose = CreateService().GetInterests(td, td.trade_extend, UnwindDate, UnwindDate,
+                eodPositions, positions, PreClose, Closed, ClosePercent,
+                (int)SwapEventTypeEnum.平仓, tdClose: false, orginPv: PreClose,
+                add: true, settment: false, newCalcLast: false, closeList: null);
+
+            Assert.AreEqual(1, intraday.Count);
+            Assert.AreEqual(1, eodPostClose.Count);
+            Console.WriteLine($"[复利mode2] 盘中 InterestAmount={intraday[0].InterestAmount} / EOD={eodPostClose[0].InterestAmount}");
+
+            // 契约 oracle：两入口同请求形状必须同额（=确认书公式"平掉额×全程参考利率"）
+            Assert.AreEqual(intraday[0].InterestAmount, eodPostClose[0].InterestAmount, 0.000000001m,
+                "GetInterests 层契约目标：同请求形状必须同额（生产入口修复暂缓中，本断言为落地时的现成回归网）");
+            // 手算锚点：300×[(1+0.011×3/365)×(1+0.011×1/365)−1]=0.036165（确认书公式）
+            Assert.AreEqual(0.036165m, Math.Round(intraday[0].InterestAmount, 6, MidpointRounding.AwayFromZero),
+                "盘中重放=契约公式手算锚点 0.036165");
+        }
+
+        /// <summary>
+        /// 【回归钉子】复利×mode2×部分平仓：观察日路径（EodPostCloseSettle 剩余+恒1）保持设计语义不回退。
+        /// 修复只改 autoSwap=false 分支；观察日恒1 全量结息是 :1220 分支的设计意图（结现），锁死其当前值。
+        /// </summary>
+        [TestMethod]
+        public void 复利_mode2_部分平仓_观察日恒1语义保持()
+        {
+            var td = CreateTrade();
+            var position = CreatePosition(InterestModeEnum.合约名义本金规模, InterestTypeEnum.复利, floating: true);
+            var preEod = CreatePreEod(interestSum: 0.05m, principal: PreClose);
+            var eodPositions = new List<eod_swap_position> { preEod };
+            var positions = new List<swap_position> { position };
+
+            var observationDay = CreateService().GetInterests(td, td.trade_extend, UnwindDate, UnwindDate,
+                eodPositions, positions, Remaining, Closed, 1m,
+                (int)SwapEventTypeEnum.平仓, tdClose: false, orginPv: PreClose,
+                add: true, settment: false, newCalcLast: false, closeList: null);
+
+            Assert.AreEqual(1, observationDay.Count);
+            Assert.AreEqual(0.059041913305m, observationDay[0].InterestAmount, 0.000000001m,
+                "观察日(autoSwap=true)路径：剩余+恒1 的全平分支为其设计语义（结现），修复不得改变此值");
+        }
+
+        /// <summary>
+        /// 单利×mode2×部分平仓30%：记录两入口当前口径（快照×比例 vs 重放基数差异面）。
+        /// 单利消费 posiPrincipal×closePercent：盘中 1000×0.3 vs EOD 700×1 —— 若两值不等，
+        /// 这是当前系统的已知口径差异面（非断言失败项），数值以 Console 留档，供特判降级时对照。
+        /// </summary>
+        [TestMethod]
+        public void 单利_mode2_部分平仓_双入口口径留档()
+        {
+            var td = CreateTrade();
+            var position = CreatePosition(InterestModeEnum.合约名义本金规模, InterestTypeEnum.单利);
+            var preEod = CreatePreEod(interestSum: 0.05m, principal: PreClose);
+            var eodPositions = new List<eod_swap_position> { preEod };
+            var positions = new List<swap_position> { position };
+
+            var intraday = CreateService().GetIntradayUnwindInterests(InterestCalcRequest.IntradayUnwind(
+                td, td.trade_extend, UnwindDate, UnwindDate, eodPositions, positions,
+                PreClose, Closed, ClosePercent,
+                (int)SwapEventTypeEnum.平仓, tdClose: true, orginPv: PreClose, add: true, newCalcLast: false, closeList: null));
+
+            // 契约口径形状（与盘中同形状）：平仓前剩余 1000 + 平掉额 300 + 真实比例 0.3
+            var eodPostClose = CreateService().GetInterests(td, td.trade_extend, UnwindDate, UnwindDate,
+                eodPositions, positions, PreClose, Closed, ClosePercent,
+                (int)SwapEventTypeEnum.平仓, tdClose: false, orginPv: PreClose,
+                add: true, settment: false, newCalcLast: false, closeList: null);
+
+            Assert.AreEqual(1, intraday.Count);
+            Assert.AreEqual(1, eodPostClose.Count);
+            Console.WriteLine($"[单利mode2] 盘中 InterestAmount={intraday[0].InterestAmount} / EOD={eodPostClose[0].InterestAmount}");
+            Console.WriteLine($"[单利mode2] TdInterestAmount: 盘中={intraday[0].TdInterestAmount} / EOD={eodPostClose[0].TdInterestAmount}");
+            // 契约目标：两入口同请求形状必须同额（单利：平掉额基数 + 快照×比例链路一致）
+            Assert.AreEqual(intraday[0].InterestAmount, eodPostClose[0].InterestAmount, 0.000000001m,
+                "GetInterests 层契约目标：单利×mode2 同请求形状必须同额（生产入口修复暂缓中）");
+            Assert.IsTrue(intraday[0].InterestAmount != 0m, "盘中单利结息额不应为0");
+        }
+
+        /// <summary>
+        /// mode9 全平（契约目标形状：平仓前剩余=平掉额=1000、比例恒1）：
+        /// 结息额非零且=全平语义（:1220 全平分支：待实现+末段增量，尾差一次带走——设计意图维持）。
+        /// </summary>
+        [TestMethod]
+        public void 复利_mode9_全平_兜底覆盖生效结息额非零()
+        {
+            var td = CreateTrade();
+            var position = CreatePosition(InterestModeEnum.标的期初全价, InterestTypeEnum.复利, floating: true);
+            var preEod = CreatePreEod(interestSum: 0.05m, principal: PreClose);
+            var eodPositions = new List<eod_swap_position> { preEod };
+            var positions = new List<swap_position> { position };
+
+            // 全平：平仓前剩余=平掉=1000，比例恒1（全平专属分支）
+            var result = CreateService().GetInterests(td, td.trade_extend, UnwindDate, UnwindDate,
+                eodPositions, positions, PreClose, PreClose, 1m,
+                (int)SwapEventTypeEnum.平仓, tdClose: false, orginPv: PreClose,
+                add: true, settment: false, newCalcLast: false, closeList: null);
+
+            Assert.AreEqual(1, result.Count);
+            Console.WriteLine($"[复利mode9全平] InterestAmount={result[0].InterestAmount}");
+            Assert.IsTrue(result[0].InterestAmount != 0m,
+                "mode9 全平：结息本金=平掉额(1000)，结息额非零（全平语义钉子）");
+        }
+
+        #region CalcEodPostCloseSettleInterests 接缝映射钉子
+
+        /// <summary>
+        /// 参数捕获 stub：拦下 CalcSwapInterests 的全部实参，不触库、不真算。
+        /// </summary>
+        private sealed class CalcSwapInterestsCapture : TestableSwapEodPositionService
+        {
+            public CalcSwapInterestsCapture() : base(nameof(GetInterestsEntrySemanticsTest)) { }
+
+            public List<swap_flow_event> CapturedCloseList = null;
+            public bool CapturedTdClose;
+            public int CapturedEventType;
+            public decimal CapturedPosiNotional;
+            public decimal CapturedClosePosiNotional;
+            public decimal CapturedClosePercent;
+            public decimal CapturedOrginPv;
+            public bool CapturedAdd;
+            public bool CapturedSettment;
+            public bool CapturedNewCalcLast;
+            public int CallCount;
+
+            protected override List<swap_flow_event> CalcSwapInterests(
+                trade td, trade_extend tradeExtend,
+                DateTime valueDate, DateTime unwindDate,
+                List<eod_swap_position> eodPositions, List<swap_position> positions,
+                decimal posiNotionalValue,
+                decimal closePosiNotionalValue, decimal closePrecent,
+                int eventType, bool tdClose,
+                decimal orginPv,
+                bool add = false, bool settment = true, bool newCalcLast = false,
+                List<swap_flow_event> closeList = null)
+            {
+                CallCount++;
+                CapturedTdClose = tdClose; CapturedEventType = eventType;
+                CapturedPosiNotional = posiNotionalValue; CapturedClosePosiNotional = closePosiNotionalValue;
+                CapturedClosePercent = closePrecent; CapturedOrginPv = orginPv;
+                CapturedAdd = add; CapturedSettment = settment; CapturedNewCalcLast = newCalcLast;
+                CapturedCloseList = closeList;
+                return new List<swap_flow_event>();
+            }
+
+            public List<swap_flow_event> ExposedEodPostCloseSettle(InterestCalcRequest req)
+                => CalcEodPostCloseSettleInterests(req);
+        }
+
+        /// <summary>
+        /// 钉死 InterestCalcRequest.EodPostCloseSettle 工厂 → CalcEodPostCloseSettleInterests →
+        /// CalcSwapInterests 的位置参数转发契约。这段转发是位置传参最易错位的环节
+        /// （posiNotionalValue/closePosiNotionalValue/orginPv 三个相邻同型 decimal，编译器不查错位），
+        /// 任何映射改动（含将来删 needPrice/grossPrice 死参数）都必须保持本断言绿。
+        /// </summary>
+        [TestMethod]
+        public void EOD平仓后收盘_工厂到接缝_参数映射钉死()
+        {
+            var td = CreateTrade();
+            var position = CreatePosition(InterestModeEnum.合约名义本金规模, InterestTypeEnum.单利);
+            var preEod = CreatePreEod(interestSum: 0.05m, principal: PreClose);
+            var positions = new List<swap_position> { position };
+
+            var stub = new CalcSwapInterestsCapture();
+            var req = InterestCalcRequest.EodPostCloseSettle(
+                td, td.trade_extend, UnwindDate, UnwindDate,
+                new List<eod_swap_position> { preEod }, positions,
+                remainingNotionalAfterClose: Remaining,
+                closedNotional: Closed,
+                eventType: (int)SwapEventTypeEnum.平仓, tdClose: false,
+                orginPv: PreClose, add: true, newCalcLast: false);
+
+            stub.ExposedEodPostCloseSettle(req);
+
+            Assert.AreEqual(1, stub.CallCount, "默认实现应恰好调用一次 CalcSwapInterests（虚接缝兼容既有测试替身）");
+            Assert.AreEqual(Remaining, stub.CapturedPosiNotional, "posiNotionalValue 位 = 平仓后剩余(700)——语义核心，错位即红");
+            Assert.AreEqual(Closed, stub.CapturedClosePosiNotional, "closePosiNotionalValue 位 = 实际平掉额(300)");
+            Assert.AreEqual(1m, stub.CapturedClosePercent, "closePrecent 恒 1（全额结息）");
+            Assert.AreEqual((int)SwapEventTypeEnum.平仓, stub.CapturedEventType);
+            Assert.IsFalse(stub.CapturedTdClose);
+            Assert.AreEqual(PreClose, stub.CapturedOrginPv, "orginPv 位 = 上一日终本金——与相邻 decimal 最易错位处");
+            Assert.IsTrue(stub.CapturedAdd);
+            Assert.IsFalse(stub.CapturedSettment, "settment=false：走盘中重放算法（EOD平仓后收盘复用重放）");
+            Assert.IsFalse(stub.CapturedNewCalcLast);
+            Assert.IsNull(stub.CapturedCloseList, "该场景不传 closeList");
+        }
+
+        #endregion
+
+        #region 守恒不变量(§7-1, 免 oracle/免库, 守 EOD平仓后收盘×部分平仓 裸格)
+
+        // 守恒不变量统一断言在"剩余持仓前递"(preEod.PosiNotionalValue)上：该字段由 CalcUnwindInterest/
+        // InitSwapDealInterest 在 preEod.id==0 时写入(posiPrincipal)，与利息算法(单/复、FR007)无关，
+        // 是最稳健、码算、免库的守恒观测点。期初(orginPv) = 前递剩余 + 平掉额(closePosiNotionalValue) 必须成立。
+        // 全部内存构造(StubSwapDealService 避库)；funding-leg(mode2)不触发早路由 continue，故亦是早路由改动护栏。
+
+        /// <summary>
+        /// 建一个"无历史 eod"快照(id==0)，使引擎把本次剩余持仓写入 preEod.PosiNotionalValue。
+        /// </summary>
+        private static eod_swap_position NewPreEod(decimal carryPrincipal)
+            => new()
+            {
+                id = 0, SwapTradeId = 1, PositionId = 1001,
+                ValueDate = new DateTime(2026, 4, 29), ClientId = 999998,
+                FloatRate = 0m, TdInterestPrincipal = carryPrincipal,
+                PosiNotionalValue = carryPrincipal, InterestIncomeSum = 0.05m, InterestProfitSum = 0.05m
+            };
+
+        /// <summary>
+        /// §7-1 守恒①：EOD平仓后收盘×部分平仓，引擎把剩余持仓(700)前递进 preEod.PosiNotionalValue，
+        /// 且 期初 = 前递剩余(码算) + 平掉额(输入) = 1000。
+        /// 守 2035e1df 裸格(§6 空洞1)：若 EOD 入口把前递值误写成平掉额/期初，守恒等式即破。
+        /// </summary>
+        [TestMethod]
+        public void EOD平仓后收盘_部分平仓_守恒_剩余前递且期初等于剩余加平掉额()
+        {
+            var td = CreateTrade();
+            var position = CreatePosition(InterestModeEnum.合约名义本金规模, InterestTypeEnum.单利);
+            var preEod = NewPreEod(Remaining); // 无历史 eod → 引擎写回剩余
+            var eodPositions = new List<eod_swap_position> { preEod };
+            var positions = new List<swap_position> { position };
+
+            var result = CreateService().GetInterests(td, td.trade_extend, UnwindDate, UnwindDate,
+                eodPositions, positions, Remaining, Closed, 1m,
+                (int)SwapEventTypeEnum.平仓, tdClose: false, orginPv: PreClose,
+                add: false, settment: false, newCalcLast: false, closeList: null);
+
+            Assert.AreEqual(1, result.Count, "EOD平仓后收盘部分平仓应产生 1 条利息事件");
+            // 码算：引擎把剩余持仓前递(return 700)
+            Assert.AreEqual(Remaining, preEod.PosiNotionalValue,
+                "EOD平仓后收盘必须把剩余持仓(700)前递进 preEod.PosiNotionalValue；若误写平掉额/期初则守恒破坏");
+            // 守恒：期初 = 前递剩余(码算) + 平掉额(输入)
+            Assert.AreEqual(PreClose, preEod.PosiNotionalValue + Closed,
+                "期初(orginPv=1000) 必须 = 剩余(700) + 平掉额(300)；本金口径不守恒则利息算错");
+        }
+
+        /// <summary>
+        /// §7-1 守恒②：EOD平仓后收盘×全平，剩余持仓前递=0(清仓)。守全平非零边界的互补面。
+        /// </summary>
+        [TestMethod]
+        public void EOD平仓后收盘_全平_守恒_剩余前递归零()
+        {
+            var td = CreateTrade();
+            var position = CreatePosition(InterestModeEnum.合约名义本金规模, InterestTypeEnum.单利);
+            var preEod = NewPreEod(0m);
+            var eodPositions = new List<eod_swap_position> { preEod };
+            var positions = new List<swap_position> { position };
+
+            var result = CreateService().GetInterests(td, td.trade_extend, UnwindDate, UnwindDate,
+                eodPositions, positions, 0m, PreClose, 1m,
+                (int)SwapEventTypeEnum.平仓, tdClose: false, orginPv: PreClose,
+                add: false, settment: false, newCalcLast: false, closeList: null);
+
+            Assert.AreEqual(1, result.Count);
+            Assert.AreEqual(0m, preEod.PosiNotionalValue,
+                "全平后剩余持仓前递必须为 0；非 0 表示平仓未清仓，守恒破坏");
+            Assert.AreEqual(PreClose, preEod.PosiNotionalValue + PreClose,
+                "全平守恒：期初(1000) = 剩余(0) + 平掉额(1000)");
+        }
+
+        /// <summary>
+        /// §7-1 守恒③(逐日)：两次部分平仓，Day2 剩余前递 = 当日剩余(码算)，且 期初 - 前递剩余 = 平掉额，
+        /// 构成跨日携带链守恒。Day1 期初1000→平300剩700；Day2 期初700→平210剩490；累计平掉510+剩余490=1000。
+        /// </summary>
+        [TestMethod]
+        public void EOD平仓后收盘_两次部分平仓_逐日守恒_期初减剩余前递等于平掉额()
+        {
+            var td = CreateTrade();
+            var position = CreatePosition(InterestModeEnum.合约名义本金规模, InterestTypeEnum.单利);
+
+            // Day1：期初1000，平300，剩700
+            var preEod1 = NewPreEod(PreClose);
+            var result1 = CreateService().GetInterests(td, td.trade_extend, UnwindDate, UnwindDate,
+                new List<eod_swap_position> { preEod1 }, new List<swap_position> { position },
+                Remaining, Closed, 1m,
+                (int)SwapEventTypeEnum.平仓, tdClose: false, orginPv: PreClose,
+                add: false, settment: false, newCalcLast: false, closeList: null);
+            Assert.AreEqual(1, result1.Count);
+            Assert.AreEqual(Remaining, preEod1.PosiNotionalValue, "Day1 剩余前递应为 700");
+
+            // Day2：期初=Day1剩余700，平210，剩490
+            const decimal day2OrginPv = 700m;
+            const decimal day2Closed = 210m;
+            const decimal day2Remaining = 490m;
+            var preEod2 = NewPreEod(day2OrginPv); // 承载=Day1剩余700
+            var result2 = CreateService().GetInterests(td, td.trade_extend, UnwindDate, UnwindDate,
+                new List<eod_swap_position> { preEod2 }, new List<swap_position> { position },
+                day2Remaining, day2Closed, 1m,
+                (int)SwapEventTypeEnum.平仓, tdClose: false, orginPv: day2OrginPv,
+                add: false, settment: false, newCalcLast: false, closeList: null);
+
+            Assert.AreEqual(1, result2.Count);
+            // 码算：Day2 剩余前递=当日剩余(490)
+            Assert.AreEqual(day2Remaining, preEod2.PosiNotionalValue, "Day2 剩余前递=剩余(490,码算值)");
+            // 逐日守恒：期初 - 剩余前递 = 平掉额(210)
+            Assert.AreEqual(day2Closed, day2OrginPv - preEod2.PosiNotionalValue,
+                "Day2 守恒：期初(700) - 剩余前递(490) 必须 = 平掉额(210)；跨日携带链本金不守恒则利息算错");
+        }
+
+        /// <summary>
+        /// §7-1 守恒④(纯数学，ClosePercentMath)：多次平仓累计占期初比例 = 1 - ∏(1 - 各次剩余口径)。
+        /// 初次占期初30%(平300/名义1000)→剩余口径0.3；二次占期初50%(平350/剩余700)→剩余口径0.5；
+        /// 累计平掉 = 1 - 0.7×0.5 = 0.65。验证 ClosePercentMath 双口径换算在多次平仓下不漂移。
+        /// </summary>
+        [TestMethod]
+        public void 多次平仓_占期初累计比例等于各次剩余口径连乘补数()
+        {
+            var b1 = ClosePercentMath.ToRemainingClosePercent(0.3m, 1000m, 1000m);
+            Assert.AreEqual(0.3m, b1, "初次平仓占期初30% → 剩余口径应为 0.3");
+            var b2 = ClosePercentMath.ToRemainingClosePercent(0.5m, 700m, 700m);
+            Assert.AreEqual(0.5m, b2, "二次平仓占期初50%(占剩余700) → 剩余口径应为 0.5");
+
+            var cumulativeClosed = 1m - (1m - b1) * (1m - b2);
+            Assert.AreEqual(0.65m, cumulativeClosed, 0.0000001m,
+                "多次平仓累计平掉比例必须=各次剩余口径连乘的补数；否则本金口径在多次平仓下分裂");
+
+            var back = ClosePercentMath.ToOriginalClosePercent(cumulativeClosed, 1000m, 1000m);
+            Assert.AreEqual(0.65m, back, 0.0000001m, "累计占期初比例反向还原必须一致");
+        }
+
+        #endregion
+    }
+}

UnitTestProject/Modules/SwapModule/GetInterestsUnitTest_T0.cs

@@ -228,9 +228,9 @@ namespace YLErp.Modules.SwapModule
             var position = CreateFloatInterestPosition(interestRule, interestType, fixedRate);
             var interests = _service.GetInterests(td, td.trade_extend, valueDate, unwindDate,
                 eodPositions, new List<swap_position> { position },
-                posiNotional, posiNotional, posiNotional, posiNotional, closePercent,
+                posiNotional, posiNotional, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
+                false, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
             AssertInterestEqual(1, interests.Count);
             return interests[0];
         }
@@ -244,9 +244,9 @@ namespace YLErp.Modules.SwapModule
             var position = CreateFloatInterestPosition(interestRule, interestType, fixedRate);
             var interests = _service.GetInterests(td, td.trade_extend, valueDate, valueDate,
                 eodPositions, new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, 1m,
+                Principal, Principal, 1m,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, Principal, false, settment: true, newCalcLast: false, closeList: closeList);
+                false, Principal, false, settment: true, newCalcLast: false, closeList: closeList);
             AssertInterestEqual(1, interests.Count);
             return interests[0];
         }
@@ -263,9 +263,9 @@ namespace YLErp.Modules.SwapModule
             var position = CreateFixedInterestPosition(fixedRate, interestRule);
             var interests = _service.GetInterests(td, td.trade_extend, valueDate, unwindDate,
                 eodPositions, new List<swap_position> { position },
-                posiNotional, posiNotional, posiNotional, posiNotional, closePercent,
+                posiNotional, posiNotional, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
+                false, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
             AssertInterestEqual(1, interests.Count);
             return interests[0];
         }
@@ -279,9 +279,9 @@ namespace YLErp.Modules.SwapModule
             var position = CreateFixedInterestPosition(fixedRate, interestRule);
             var interests = _service.GetInterests(td, td.trade_extend, valueDate, valueDate,
                 eodPositions, new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, 1m,
+                Principal, Principal, 1m,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, Principal, false, settment: true, newCalcLast: false, closeList: closeList);
+                false, Principal, false, settment: true, newCalcLast: false, closeList: closeList);
             AssertInterestEqual(1, interests.Count);
             return interests[0];
         }

UnitTestProject/Modules/SwapModule/GetInterestsUnitTest_T1.cs

@@ -322,9 +322,9 @@ namespace YLErp.Modules.SwapModule
                 valueDate, unwindDate,
                 eodPositions,
                 new List<swap_position> { position },
-                posiNotional, posiNotional, posiNotional, posiNotional, closePercent,
+                posiNotional, posiNotional, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
+                false, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
 
             AssertInterestEqual(1, interests.Count);
             return interests[0];
@@ -346,9 +346,9 @@ namespace YLErp.Modules.SwapModule
                 valueDate, valueDate,
                 eodPositions,
                 new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, 1m,
+                Principal, Principal, 1m,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, Principal, false, settment: true, newCalcLast: false, closeList: closeList);
+                false, Principal, false, settment: true, newCalcLast: false, closeList: closeList);
 
             AssertInterestEqual(1, interests.Count);
             return interests[0];
@@ -371,9 +371,9 @@ namespace YLErp.Modules.SwapModule
                 valueDate, valueDate,
                 eodPositions,
                 new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, closePercent,
+                Principal, Principal, closePercent,
                 (int)SwapEventTypeEnum.自动互换,
-                false, false, 0, Principal, false, settment: false, newCalcLast: false, closeList: closeList);
+                false, Principal, false, settment: false, newCalcLast: false, closeList: closeList);
 
             AssertInterestEqual(1, interests.Count);
             return interests[0];
@@ -407,9 +407,9 @@ namespace YLErp.Modules.SwapModule
                 valueDate, unwindDate,
                 eodPositions,
                 new List<swap_position> { position },
-                posiNotional, posiNotional, posiNotional, posiNotional, closePercent,
+                posiNotional, posiNotional, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
+                false, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
 
             AssertInterestEqual(1, interests.Count);
             return interests[0];
@@ -430,9 +430,9 @@ namespace YLErp.Modules.SwapModule
                 valueDate, valueDate,
                 eodPositions,
                 new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, 1m,
+                Principal, Principal, 1m,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, Principal, false, settment: true, newCalcLast: false, closeList: closeList);
+                false, Principal, false, settment: true, newCalcLast: false, closeList: closeList);
 
             AssertInterestEqual(1, interests.Count);
             return interests[0];
@@ -1716,9 +1716,9 @@ namespace YLErp.Modules.SwapModule
                 valueDate, unwindDate,
                 eodPositions,
                 new List<swap_position> { position },
-                posiNotional, posiNotional, posiNotional, posiNotional, closePercent,
+                posiNotional, posiNotional, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
+                false, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
 
             AssertInterestEqual(1, interests.Count);
             return interests[0];
@@ -1747,9 +1747,9 @@ namespace YLErp.Modules.SwapModule
                 valueDate, unwindDate,
                 eodPositions,
                 new List<swap_position> { position },
-                posiNotional, posiNotional, posiNotional, posiNotional, closePercent,
+                posiNotional, posiNotional, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
+                false, posiNotional, false, settment: false, newCalcLast: newCalcLast, closeList: closeList);
 
             AssertInterestEqual(1, interests.Count);
             return interests[0];

UnitTestProject/Modules/SwapModule/InitUnwindTradingFeeTest.cs

@@ -1,4 +1,3 @@
-using System.Reflection;
 using YLErp.DBModels;
 
 namespace YLErp.Modules.SwapModule
@@ -7,26 +6,10 @@ namespace YLErp.Modules.SwapModule
     public class InitUnwindTradingFeeTest
     {
         private static decimal InvokeCalcInitTradingFee(swap_position position, UnwindData unwindData)
-        {
-            var method = typeof(SwapDealService).GetMethod(
-                "CalcInitTradingFee",
-                BindingFlags.NonPublic | BindingFlags.Static);
-
-            Assert.IsNotNull(method, "未找到 CalcInitTradingFee 私有静态方法");
-
-            return (decimal)method.Invoke(null, new object[] { position, unwindData });
-        }
+            => TradingFeeCalc.CalcInitTradingFee(position, unwindData);
 
         private static decimal InvokeCalcInitTradingFeePending(swap_position oriPosition, swap_position position, UnwindData unwindData)
-        {
-            var method = typeof(SwapDealService).GetMethod(
-                "CalcInitTradingFeePending",
-                BindingFlags.NonPublic | BindingFlags.Static);
-
-            Assert.IsNotNull(method, "CalcInitTradingFeePending was not found");
-
-            return (decimal)method.Invoke(null, new object[] { oriPosition, position, unwindData });
-        }
+            => TradingFeeCalc.CalcInitTradingFeePending(oriPosition, position, unwindData);
 
         [TestMethod]
         public void 百分比模式_按平仓名义本金计算并四舍五入到两位()

UnitTestProject/Modules/SwapModule/InterestEodScenarioDispatchTest.cs

@@ -0,0 +1,30 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace YLErp.Modules.SwapModule
+{
+    /// <summary>
+    /// DealInterests 分派优先级（TEST-MATRIX §6 空洞补盖）。
+    /// 纯函数 InterestEodScenarioDispatch.ResolveInterestScenario 的 8 组合表驱动单测，不连库、无 DB。
+    /// 守卫：手工互换压制观察日自动结息；观察日±平仓区分 autoSwap 真/假；纯平仓与普通日分流。
+    /// </summary>
+    [TestClass]
+    public class InterestEodScenarioDispatchTest
+    {
+        [DataTestMethod]
+        [DataRow(false, false, false, InterestEodScenario.RollForward)]            // 普通日
+        [DataRow(false, false, true,  InterestEodScenario.CloseOnly)]             // 纯平仓(非观察日)
+        [DataRow(false, true,  false, InterestEodScenario.ManualSwap)]            // 手工互换(非观察日)
+        [DataRow(false, true,  true,  InterestEodScenario.ManualSwap)]            // 手工互换+平仓 → 手工优先
+        [DataRow(true,  false, false, InterestEodScenario.AutoSettle)]            // 观察日, 无平仓
+        [DataRow(true,  false, true,  InterestEodScenario.AutoSettleWithClose)]   // 观察日+平仓 (autoSwap=true)
+        [DataRow(true,  true,  false, InterestEodScenario.ManualSwap)]            // 观察日+手工互换 → 手工优先
+        [DataRow(true,  true,  true,  InterestEodScenario.ManualSwap)]            // 观察日+手工互换+平仓 → 手工优先
+        public void ResolveInterestScenario_CoversAllEightCombinations(
+            bool hasInterval, bool hasSwap, bool hasClose, InterestEodScenario expected)
+        {
+            var actual = InterestEodScenarioDispatch.ResolveInterestScenario(hasInterval, hasSwap, hasClose);
+            Assert.AreEqual(expected, actual,
+                $"hasInterval={hasInterval}, hasSwap={hasSwap}, hasClose={hasClose}");
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/InterestEodTailSnapshotTest.cs

@@ -0,0 +1,319 @@
+using Newtonsoft.Json;
+
+namespace YLErp.Modules.SwapModule
+{
+    /// <summary>
+    /// L1（类内去重）前置安全网：DealInterests 四分支中无 golden 语料的三格
+    /// （AutoSettle / AutoSettleWithClose / CloseOnly）尾部滚存字段特征化快照。
+    ///
+    /// - ManualSwap / RollForward 两格已由 DealInterestsGoldenReplayTest 语料钉住
+    ///   （字段集见 GoldenReplayFramework.EodPositionToJson）。
+    /// - 本测试钉"现状行为"：L1 抽共享助手（腿字段拷贝段 + 滚存收尾段）前后，
+    ///   以下字段必须逐字段不变。变化=去重改了口径。
+    /// - 同时断言接 seam 指纹（哪个计息接缝 + eventType）与 autoInterests 收集行为，
+    ///   兼作 L2（按腿拆类）的路由验收。
+    /// - 计息金额由受控 CalcResult 注入（不连库、不依赖真实计息引擎）。
+    /// </summary>
+    [TestClass]
+    public class InterestEodTailSnapshotTest
+    {
+        private const decimal Principal = 10000m;
+        private const decimal Rate = 0.03m;
+        private static readonly DateTime StartDate = new(2026, 4, 27);
+        private static readonly DateTime SettleDate = StartDate.AddDays(10); // 第10天收盘
+        private const decimal Accrued10d = 8.22m;   // 受控：10天理论应结
+        private const decimal DailyNew = 0.82m;     // 受控：当日新增
+        private const decimal ManualSettled = 3.5m; // 受控：盘中平仓已结
+        private const decimal Remaining = 7000m;    // 平仓后剩余本金
+        private const decimal ClosedNotional = 3000m; // 本次平掉本金
+
+        private sealed class TailStubService : TestableSwapEodPositionService
+        {
+            public TailStubService() : base(nameof(InterestEodTailSnapshotTest)) { }
+
+            /// <summary>受控计息结果：两个计息 seam 均返回它</summary>
+            public List<swap_flow_event> CalcResult { get; set; } = new();
+
+            public string LastCalcSeam { get; private set; } = "";
+            public List<int> CalcEventTypes { get; } = new();
+
+            protected override List<swap_flow_event> CalcSwapInterests(
+                trade td, trade_extend tradeExtend,
+                DateTime valueDate, DateTime unwindDate,
+                List<eod_swap_position> eodPositions, List<swap_position> positions,
+                decimal posiNotionalValue,
+                decimal closePosiNotionalValue, decimal closePrecent,
+                int eventType, bool tdClose,
+                decimal orginPv,
+                bool add = false, bool settment = true, bool newCalcLast = false,
+                List<swap_flow_event> closeList = null)
+            {
+                LastCalcSeam = nameof(CalcSwapInterests);
+                CalcEventTypes.Add(eventType);
+                return CalcResult;
+            }
+
+            protected override List<swap_flow_event> CalcEodPostCloseSettleInterests(InterestCalcRequest req)
+            {
+                LastCalcSeam = nameof(CalcEodPostCloseSettleInterests);
+                CalcEventTypes.Add(req.EventType);
+                return CalcResult;
+            }
+
+            /// <summary>持仓延续腿重置日再定盘接缝：计数并返回受控新定盘（不连库）</summary>
+            public decimal RefixResult { get; set; }
+            public int RefixCalls { get; private set; }
+
+            protected override decimal ResolveOngoingResetFixing(swap_position position, DateTime valueDate)
+            {
+                RefixCalls++;
+                return RefixResult;
+            }
+
+            public List<swap_flow_event> ExecuteDealInterests(
+                List<swap_position> interestList, List<eod_swap_position> eodPositions,
+                DateTime settleDate, trade td, List<swap_flow_event> flowEvents,
+                decimal posiTotalNotional, decimal closeNational, decimal grossPrice, decimal orginPv)
+            {
+                var autoInterests = new List<swap_flow_event>();
+                DealInterests(interestList, eodPositions, new List<eod_swap_position>(),
+                    settleDate, td, flowEvents, autoInterests, null,
+                    posiTotalNotional, closeNational, grossPrice, orginPv);
+                return autoInterests;
+            }
+        }
+
+        private static trade CreateTrade() => new()
+        {
+            id = 1, TradeNumber = "TAIL-SNAP-001", ClientId = 999998,
+            TradeType = "收益互换", TradeDate = StartDate, StartDate = StartDate,
+            ExerciseDate = new DateTime(2027, 4, 27), TradeStatus = "确认成交",
+            ValidState = "Valid", StructureType = "单标的",
+            QuoteCurrency = "CNY", SettlementCurrency = "CNY",
+            trade_extend = new trade_extend
+            {
+                TradeId = 1,
+                ExtendJson = JsonConvert.SerializeObject(new TradeExtendJson { AnnualDays = 365, InterestCalcMode = "10", SettlementRules = 0 })
+            }
+        };
+
+        /// <param name="observationDay">true=当日观察日(Settlement=1)；false=观察日在别日</param>
+        private static swap_position CreateInterestPosition(bool observationDay)
+        {
+            var interval = observationDay
+                ? new IntervalModel { Date = SettleDate, Rate = Rate, Settlement = 1 }
+                : new IntervalModel { Date = StartDate, Rate = Rate, Settlement = 1 };
+            return new swap_position
+            {
+                id = 1001, SwapTradeId = 1, InterestDirection = (int)SwapDirectionEnum.收取,
+                InterestMode = (int)InterestModeEnum.标的期初全价, InterestRateDefault = Rate,
+                InterestPrincipalFix = Principal, PosiStartDate = StartDate,
+                PosiMatuirityDate = new DateTime(2027, 4, 27), IsInitial = true,
+                InterestType = (int)InterestTypeEnum.单利, IsAnnualized = true,
+                interest_rest_days = 1, interest_rule = 0,
+                InterestSwapInterval = JsonConvert.SerializeObject(new List<IntervalModel> { interval })
+            };
+        }
+
+        private static eod_swap_position CreatePreEod(decimal accumulated) => new()
+        {
+            id = 100, PositionId = 1001, ValueDate = SettleDate.AddDays(-1),
+            InterestDirection = (int)SwapDirectionEnum.收取, InterestMode = (int)InterestModeEnum.标的期初全价,
+            InterestIncomeSum = accumulated, InterestProfitSum = accumulated,
+            InterestRateDefault = Rate, TdInterestPrincipal = Principal,
+            InterestType = (int)InterestTypeEnum.单利, IsAnnualized = true, interest_rest_days = 1
+        };
+
+        private static swap_flow_event CreateCalcResult() => new()
+        {
+            EventType = (int)SwapEventTypeEnum.自动互换, PositionId = 1001,
+            InterestAmount = Accrued10d, TdInterestAmount = DailyNew,
+            InterestClosePnL = Accrued10d,
+            InterestPrincipal = Principal, InterestRate = Rate,
+            InterestDirection = (int)SwapDirectionEnum.收取
+        };
+
+        private static swap_flow_event CreateCloseEvent() => new()
+        {
+            EventType = (int)SwapEventTypeEnum.平仓, PositionId = 1001,
+            InterestAmount = ManualSettled, InterestClosePnL = ManualSettled,
+            InterestRate = Rate, InterestFee = 0m,
+            InterestPrincipal = ClosedNotional,
+            InterestDirection = (int)SwapDirectionEnum.收取,
+            DataState = (int)SwapFlowDateStateEnum.完成
+        };
+
+        /// <summary>AutoSettle 格：观察日无平仓 → SaveAutoEodInterestPosition，返回值收集进 autoInterests</summary>
+        [TestMethod]
+        public void AutoSettle_观察日无平仓_尾部快照()
+        {
+            var service = new TailStubService { CalcResult = new List<swap_flow_event> { CreateCalcResult() } };
+            var autoInterests = service.ExecuteDealInterests(
+                new List<swap_position> { CreateInterestPosition(observationDay: true) },
+                new List<eod_swap_position> { CreatePreEod(Accrued10d) },
+                SettleDate, CreateTrade(), new List<swap_flow_event>(),
+                Principal, 0m, 100m, Principal);
+
+            Assert.AreEqual("CalcSwapInterests", service.LastCalcSeam, "观察日无平仓应走 CalcSwapInterests seam");
+            Assert.AreEqual((int)SwapEventTypeEnum.自动互换, service.CalcEventTypes.Single(), "eventType 应为自动互换");
+            Assert.AreEqual(1, autoInterests.Count, "观察日分支应收集返回值进 autoInterests（→资金记录）");
+
+            var p = service.PersistedPositions.Single();
+            // 钉值于 2026-08-17 现状行为（受控输入：应结8.22/新增0.82/本金10000）
+            Assert.AreEqual(8.22m, p.TdCloseInterest);
+            Assert.AreEqual(0.82m, p.TdInterestIncome);
+            Assert.AreEqual(10000m, p.TdInterestPrincipal);
+            Assert.AreEqual(0.03m, p.TdInterestRate);
+            Assert.AreEqual(0.00m, p.InterestIncomeSum, "应结=结算，待实现清零");
+            Assert.AreEqual(0m, p.InterestFeeSum);
+            Assert.AreEqual(0m, p.InterestProfitSum);
+            Assert.AreEqual(8.22m, p.RealizedInterest);
+            Assert.AreEqual(0m, p.RealizedInterestFee);
+            Assert.AreEqual(0m, p.SwapPositionValue);
+            Assert.AreEqual(1.0m, p.TdCurrency);
+        }
+
+        /// <summary>AutoSettleWithClose 格（TEST-MATRIX §6 最弱格）：观察日+平仓 → SaveAutoEodWithCloseInterestPosition(autoSwap:true)，补结差额=恒1全额−盘中已结</summary>
+        [TestMethod]
+        public void AutoSettleWithClose_观察日加平仓_尾部快照()
+        {
+            var service = new TailStubService { CalcResult = new List<swap_flow_event> { CreateCalcResult() } };
+            var autoInterests = service.ExecuteDealInterests(
+                new List<swap_position> { CreateInterestPosition(observationDay: true) },
+                new List<eod_swap_position> { CreatePreEod(Accrued10d) },
+                SettleDate, CreateTrade(), new List<swap_flow_event> { CreateCloseEvent() },
+                Remaining, ClosedNotional, 100m, Remaining);
+
+            Assert.AreEqual("CalcEodPostCloseSettleInterests", service.LastCalcSeam, "观察日+平仓应走 EodPostCloseSettle seam");
+            Assert.AreEqual((int)SwapEventTypeEnum.自动互换, service.CalcEventTypes.Single(), "autoSwap=true → eventType=自动互换");
+            Assert.AreEqual(1, autoInterests.Count, "观察日分支应收集返回值进 autoInterests");
+            Assert.AreEqual(Accrued10d - ManualSettled, autoInterests[0].InterestAmount, "补结差额=恒1全额8.22−盘中已结3.50");
+
+            var p = service.PersistedPositions.Single();
+            // 钉值于 2026-08-17 现状行为（受控输入：恒1全额8.22/盘中已结3.5/剩余7000/平掉3000）
+            Assert.AreEqual(8.22m, p.TdCloseInterest, "TdCloseInterest=盘中已结3.50+补结4.72");
+            Assert.AreEqual(0.5753424657534246575342465753m, p.TdInterestIncome, "autoSwap 重算展示应计=剩余7000×3%/365");
+            Assert.AreEqual(7000m, p.TdInterestPrincipal, "单利部分平仓：跨日本金=剩余");
+            Assert.AreEqual(0.03m, p.TdInterestRate);
+            Assert.AreEqual(0.00m, p.InterestIncomeSum, "恒1口径：理论应结8.22−结算8.22=0");
+            Assert.AreEqual(0m, p.InterestFeeSum);
+            Assert.AreEqual(0m, p.InterestProfitSum);
+            Assert.AreEqual(8.22m, p.RealizedInterest);
+            Assert.AreEqual(0m, p.RealizedInterestFee);
+            Assert.AreEqual(0m, p.SwapPositionValue);
+            Assert.AreEqual(1.0m, p.TdCurrency);
+        }
+
+        /// <summary>CloseOnly 格：非观察日平仓 → SaveAutoEodWithCloseInterestPosition(autoSwap:false)，返回值不收集，TdCloseInterest=盘中已结</summary>
+        [TestMethod]
+        public void CloseOnly_非观察日平仓_尾部快照()
+        {
+            var service = new TailStubService { CalcResult = new List<swap_flow_event> { CreateCalcResult() } };
+            var autoInterests = service.ExecuteDealInterests(
+                new List<swap_position> { CreateInterestPosition(observationDay: false) },
+                new List<eod_swap_position> { CreatePreEod(Accrued10d) },
+                SettleDate, CreateTrade(), new List<swap_flow_event> { CreateCloseEvent() },
+                Remaining, ClosedNotional, 100m, Remaining);
+
+            Assert.AreEqual("CalcEodPostCloseSettleInterests", service.LastCalcSeam, "纯平仓应走 EodPostCloseSettle seam");
+            Assert.AreEqual((int)SwapEventTypeEnum.平仓, service.CalcEventTypes.Single(), "autoSwap=false → eventType=平仓");
+            Assert.AreEqual(0, autoInterests.Count, "纯平仓分支不收集返回值（结算已在盘中流水定格）");
+
+            var p = service.PersistedPositions.Single();
+            // 钉值于 2026-08-17 现状行为（受控输入：恒1重算8.22/盘中已结3.5/剩余7000/平掉3000）
+            Assert.AreEqual(ManualSettled, p.TdCloseInterest, "TdCloseInterest 应仅为盘中已结3.50，不叠加恒1重算值");
+            Assert.AreEqual(0.5753424657534246575342465753m, p.TdInterestIncome, "不算尾路径：剩余7000×3%/365");
+            Assert.AreEqual(7000m, p.TdInterestPrincipal, "单利部分平仓：跨日本金=剩余");
+            Assert.AreEqual(0.03m, p.TdInterestRate, "非观察日：利率取平仓流水 InterestRate");
+            Assert.AreEqual(5.295342465753m, p.InterestIncomeSum, "尾差递推：上日8.22+新增0.575342−已结3.50");
+            Assert.AreEqual(0m, p.InterestFeeSum);
+            Assert.AreEqual(5.295342465753m, p.InterestProfitSum);
+            Assert.AreEqual(3.5m, p.RealizedInterest);
+            Assert.AreEqual(0m, p.RealizedInterestFee);
+            Assert.AreEqual(5.295342465753m, p.SwapPositionValue);
+            Assert.AreEqual(1.0m, p.TdCurrency);
+        }
+
+        #region 持仓延续腿重置日再定盘（EQD-6968 自洽化：快照利率载体）
+
+        private const decimal OldFloat = 0.01425m;
+        private const decimal NewFloat = 0.0143m;
+        /// <summary>4/27+14：7 天周期的重置日平仓</summary>
+        private static readonly DateTime ResetSettle = StartDate.AddDays(14);
+        /// <summary>4/27+10：非重置日平仓（10%7≠0）</summary>
+        private static readonly DateTime NonResetSettle = StartDate.AddDays(10);
+
+        private static swap_position CreateFloatLegPosition() => new()
+        {
+            id = 1001, SwapTradeId = 1, InterestDirection = (int)SwapDirectionEnum.收取,
+            InterestMode = (int)InterestModeEnum.标的期初全价, InterestRateDefault = Rate,
+            InterestPrincipalFix = Principal, PosiStartDate = StartDate,
+            PosiMatuirityDate = new DateTime(2027, 4, 27), IsInitial = true,
+            InterestType = (int)InterestTypeEnum.单利, IsAnnualized = true,
+            interest_rest_days = 7, interest_rule = 0,
+            FloatRateUnderlyingCode = "FR007",
+            InterestSwapInterval = JsonConvert.SerializeObject(new List<IntervalModel>
+                { new IntervalModel { Date = StartDate, Rate = Rate, Settlement = 1 } })
+        };
+
+        private static eod_swap_position CreatePreEodBefore(DateTime settle, decimal accumulated) => new()
+        {
+            id = 100, PositionId = 1001, ValueDate = settle.AddDays(-1),
+            InterestDirection = (int)SwapDirectionEnum.收取, InterestMode = (int)InterestModeEnum.标的期初全价,
+            InterestIncomeSum = accumulated, InterestProfitSum = accumulated,
+            InterestRateDefault = Rate, TdInterestPrincipal = Principal,
+            InterestType = (int)InterestTypeEnum.单利, IsAnnualized = true, interest_rest_days = 7
+        };
+
+        private static swap_flow_event CalcResultWithFloat(decimal floatRate)
+        {
+            var e = CreateCalcResult();
+            e.FloatRate = floatRate;
+            return e;
+        }
+
+        /// <summary>
+        /// 平仓日恰为重置日且剩余持仓>0：快照 FloatRate 必须显式再定盘为当日新定盘——
+        /// 它是后续非重置日(ByEod 沿用 preEod.FloatRate)与当日应计(intersetAcmount)的利率载体。
+        /// 排除日"纯跳过"后事件利率=末段已消费利率(OldFloat)，载体职责与本步骤显式分离。
+        /// </summary>
+        [TestMethod]
+        public void CloseOnly_平仓日为重置日_剩余持仓快照再定盘()
+        {
+            var service = new TailStubService
+            {
+                CalcResult = new List<swap_flow_event> { CalcResultWithFloat(OldFloat) },
+                RefixResult = NewFloat,
+            };
+            service.ExecuteDealInterests(
+                new List<swap_position> { CreateFloatLegPosition() },
+                new List<eod_swap_position> { CreatePreEodBefore(ResetSettle, Accrued10d) },
+                ResetSettle, CreateTrade(), new List<swap_flow_event> { CreateCloseEvent() },
+                Remaining, ClosedNotional, 100m, Remaining);
+
+            Assert.AreEqual(1, service.RefixCalls, "不算尾+平仓日=重置日+剩余>0：应恰好显式再定盘一次");
+            Assert.AreEqual(NewFloat, service.PersistedPositions.Single().FloatRate,
+                "剩余持仓快照利率=当日新定盘（非事件末段旧利率）");
+        }
+
+        [TestMethod]
+        public void CloseOnly_平仓日非重置日_不再定盘_快照沿用事件利率()
+        {
+            var service = new TailStubService
+            {
+                CalcResult = new List<swap_flow_event> { CalcResultWithFloat(OldFloat) },
+                RefixResult = NewFloat,
+            };
+            service.ExecuteDealInterests(
+                new List<swap_position> { CreateFloatLegPosition() },
+                new List<eod_swap_position> { CreatePreEodBefore(NonResetSettle, Accrued10d) },
+                NonResetSettle, CreateTrade(), new List<swap_flow_event> { CreateCloseEvent() },
+                Remaining, ClosedNotional, 100m, Remaining);
+
+            Assert.AreEqual(0, service.RefixCalls, "非重置日平仓：无需再定盘");
+            Assert.AreEqual(OldFloat, service.PersistedPositions.Single().FloatRate,
+                "快照沿用事件末段已消费利率（周期未切换）");
+        }
+        #endregion
+    }
+}

UnitTestProject/Modules/SwapModule/Margin/MarginInterestGoldenReplayTest.cs

@@ -0,0 +1,165 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using YLErp;
+using YLErp.DBModels;
+using YLErp.DBModels.Enums;
+using YLErp.Modules.SwapModule;
+using YLErp.Modules.SwapModule.Margin;
+
+namespace UnitTestProject.Modules.SwapModule.Margin
+{
+    /// <summary>
+    /// 黄金回放验证（连真实测试库 192.168.2.96）：对真实保证金交易逐日 EOD 比对
+    /// GetInterests(settment=true，保证金分支现走 CalcMarginInterest) vs 直接调 CalcMarginInterest，
+    /// 验证 GetInterests→CalcMarginInterest 接线的参数对齐（rate/posiPrincipal/preEod 等）正确。
+    ///
+    /// 数据来自 96 库的真实保证金交易，覆盖追加预付金多行、多次部分平仓（InterestPrincipalFix 下台阶）、
+    /// 跨 EOD 续接等单元测试够不到的边界。作为保证金计息迁移后的真实库回归守护。
+    /// </summary>
+    [TestClass]
+    public class MarginInterestGoldenReplayTest
+    {
+        // 96 库里已确认含真实保证金腿的交易
+        private static readonly string[] TradeNumbers =
+        {
+            "GLMS-20260701-0008",
+            "GLMS-20260701-0013",
+            "GLMS-20260701-0006",
+        };
+
+        private sealed class StubSvc : SwapDealService
+        {
+            public StubSvc() : base(new OptUserInfo(0, nameof(MarginInterestGoldenReplayTest), OptUserFrom.UnitTest)) { }
+        }
+
+        /// <summary>
+        /// 逐交易、逐 EOD 日，比对保证金腿新旧计息 InterestAmount/TdInterestAmount。
+        /// 入参对齐口径（与 GetInterests 内部一致）：
+        ///   posiPrincipal = InterestPrincipalFix；closePrincipal = Fix×closePercent(EOD=1)；
+        ///   rate = oldEvt.InterestRate（严格取旧管线算出的 rate，消除 GetFixedRate 差异）；
+        ///   方向 = FlipDirection(position.InterestDirection)（GetInterests:742 对保证金翻转）；
+        ///   preEod = 该 PositionId 上一日终 eod_swap_position；annualDays/calcFirst/calcLast 来自 trade_extend。
+        /// </summary>
+        [TestMethod]
+        [TestCategory("DbDiagnose")]
+        public void 保证金腿_真实库_EOD逐日新旧比对()
+        {
+            DbDiagnoseGuard.RequireTestDb();
+            YLContext db;
+            try { db = DbContextFactory.GetYLDbContext(); }
+            catch (Exception ex) { Assert.Inconclusive($"无法连接测试库(192.168.2.96)：{ex.Message}"); return; }
+
+            var svc = new StubSvc();
+            int totalCompared = 0, mismatches = 0, skipped = 0;
+            var diffLog = new StringBuilder();
+
+            foreach (var tradeNumber in TradeNumbers)
+            {
+                var td = db.trade.FirstOrDefault(t => t.TradeNumber == tradeNumber);
+                if (td == null) { Console.WriteLine($"跳过：库无 {tradeNumber}"); skipped++; continue; }
+
+                var extend = db.trade_extend.FirstOrDefault(x => x.TradeId == td.id);
+                int annualDays = extend?.ExtendObj.AnnualDays ?? 365;
+                bool calcFirst = extend?.ExtendObj.InterestCalcMode?.StartsWith("1") ?? true;
+                bool calcLast = extend?.ExtendObj.InterestCalcMode?.EndsWith("1") ?? true;
+
+                var marginPositions = db.swap_position
+                    .Where(p => p.SwapTradeId == td.id && !p.Invalid
+                        && (p.InterestMode == (int)InterestModeEnum.初始预付金
+                            || p.InterestMode == (int)InterestModeEnum.追加预付金))
+                    .ToList();
+                if (marginPositions.Count == 0) { Console.WriteLine($"跳过：{tradeNumber} 无保证金腿"); skipped++; continue; }
+
+                // 该交易保证金腿的 EOD 日期序列
+                var eodDates = db.eod_swap_position
+                    .Where(e => e.SwapTradeId == td.id && (e.InterestMode == 5 || e.InterestMode == 6))
+                    .Select(e => e.ValueDate).Distinct().OrderBy(d => d).ToList();
+
+                Console.WriteLine($"===== {tradeNumber} (id={td.id})：{marginPositions.Count} 条保证金腿，{eodDates.Count} 个 EOD 日 =====");
+
+                foreach (var valueDate in eodDates)
+                {
+                    // 上一日终 preEod（取 eod_swap 最近 < valueDate 的日期）
+                    var preDate = db.eod_swap
+                        .Where(e => e.SwapTradeId == td.id && e.ValueDate < valueDate)
+                        .OrderByDescending(e => e.ValueDate)
+                        .Select(e => (DateTime?)e.ValueDate).FirstOrDefault();
+                    var preEods = preDate == null
+                        ? new List<eod_swap_position>()
+                        : db.eod_swap_position
+                            .Where(e => e.SwapTradeId == td.id && e.ValueDate == preDate.Value
+                                && (e.InterestMode == 5 || e.InterestMode == 6))
+                            .ToList();
+
+                    // 旧管线：GetInterests(settment=true)。保证金分支不用 posiNotionalValue/closePosiNotionalValue/grossPrice/orginPv，传 0。
+                    List<swap_flow_event> oldList;
+                    try
+                    {
+                        oldList = svc.GetInterests(td, extend, valueDate, valueDate,
+                            preEods, marginPositions,
+                            0m, 0m, 1.0m,
+                            (int)SwapEventTypeEnum.自动互换, tdClose: false,
+                            orginPv: 0m,
+                            add: false, settment: true, newCalcLast: false, closeList: null);
+                    }
+                    catch (Exception ex)
+                    {
+                        Console.WriteLine($"  {tradeNumber} @ {valueDate:yyyy-MM-dd} 旧管线异常：{ex.GetType().Name} {ex.Message}");
+                        continue;
+                    }
+
+                    // 新方法：逐保证金腿
+                    foreach (var pos in marginPositions)
+                    {
+                        var oldEvt = oldList.FirstOrDefault(i => i.PositionId == pos.id);
+                        if (oldEvt == null) continue;
+
+                        var preEod = preEods.FirstOrDefault(e => e.PositionId == pos.id) ?? new eod_swap_position { id = 0 };
+                        var posClone = pos.Clone();
+                        posClone.InterestDirection = MarginCalc.FlipDirection(pos.InterestDirection);
+                        decimal rate = oldEvt.InterestRate;   // 严格对齐旧管线 rate（含 GetFixedRate + Round(12)）
+
+                        swap_flow_event newEvt;
+                        try
+                        {
+                            newEvt = svc.CalcMarginInterest(td, valueDate, valueDate, posClone, rate,
+                                pos.InterestPrincipalFix, pos.InterestPrincipalFix, 1.0m,
+                                annualDays, calcFirst, calcLast, preEod,
+                                (int)SwapEventTypeEnum.自动互换, add: false, settment: true, interestWindowEmpty: false);
+                        }
+                        catch (Exception ex)
+                        {
+                            mismatches++;
+                            diffLog.AppendLine($"✗ {tradeNumber} PosId={pos.id} @ {valueDate:yyyy-MM-dd} 新方法异常：{ex.GetType().Name} {ex.Message}");
+                            continue;
+                        }
+
+                        totalCompared++;
+                        decimal diffI = Math.Abs(newEvt.InterestAmount - oldEvt.InterestAmount);
+                        decimal diffTd = Math.Abs(newEvt.TdInterestAmount - oldEvt.TdInterestAmount);
+                        const decimal tol = 0.000001m;
+                        if (diffI > tol || diffTd > tol)
+                        {
+                            mismatches++;
+                            diffLog.AppendLine($"✗ {tradeNumber} PosId={pos.id} Mode={pos.InterestMode} @ {valueDate:yyyy-MM-dd}: " +
+                                $"旧 I={oldEvt.InterestAmount} Td={oldEvt.TdInterestAmount} | " +
+                                $"新 I={newEvt.InterestAmount} Td={newEvt.TdInterestAmount} | " +
+                                $"diffI={diffI} diffTd={diffTd} | " +
+                                $"preEod.id={preEod.id} TdIntPrin={preEod.TdInterestPrincipal} ProfitSum={preEod.InterestProfitSum} | " +
+                                $"Fix={pos.InterestPrincipalFix} rate={rate} IntType={pos.InterestType} IsAnnualized={pos.IsAnnualized}");
+                        }
+                    }
+                }
+            }
+
+            Console.WriteLine($"\n===== 比对汇总：共 {totalCompared} 条，不一致 {mismatches} 条，跳过 {skipped} 个交易 =====");
+            if (diffLog.Length > 0) Console.WriteLine(diffLog.ToString());
+
+            Assert.IsTrue(mismatches == 0,
+                $"保证金新旧管线 EOD 真实库比对有 {mismatches}/{totalCompared} 条不一致——提交2 前必须解决（详见输出）");
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/Margin/MarginInterestShadowTest.cs

@@ -0,0 +1,201 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Newtonsoft.Json;
+using YLErp;
+using YLErp.DBModels;
+using YLErp.DBModels.Enums;
+using YLErp.Modules.SwapModule;
+using YLErp.Modules.SwapModule.Accrual;
+using YLErp.Modules.SwapModule.Margin;
+
+namespace UnitTestProject.Modules.SwapModule.Margin
+{
+    /// <summary>
+    /// 影子对账：保证金腿方法 CalcMarginInterest（EOD 用昨日终本金、盘中用 accrualBasis 差分）vs
+    /// 旧通用管线 CalcDailySimpleInterestByEod/CalcDailySimpleInterest。
+    ///
+    /// 保证金是纯固定利率单利（FloatRateUnderlyingCode 恒空、InterestType 恒单利、SwapIntervalList 单段）。
+    /// 本测试在生产切到 CalcMarginInterest 后作为回归守护，确认其 InterestAmount/TdInterestAmount
+    /// 与旧纯函数（SimpleInterestAccrual）数值一致。覆盖 EOD 续接/首日、盘中全平/部分平仓/互换。
+    /// </summary>
+    [TestClass]
+    public class MarginInterestShadowTest
+    {
+        private const decimal Principal = 2_000_000m;   // 保证金本金（InterestPrincipalFix）
+        private const decimal Rate = 0.03m;             // 3% 年化固定利率
+        private const int AnnualDays = 365;
+        private static readonly DateTime StartDate = new(2026, 7, 1);
+        private static readonly DateTime ExerciseDate = new(2027, 6, 30);
+
+        private sealed class StubSvc : SwapDealService
+        {
+            public StubSvc() : base(new OptUserInfo(0, nameof(MarginInterestShadowTest), OptUserFrom.UnitTest)) { }
+        }
+
+        private static trade CreateTrade() => new trade
+        {
+            id = 1, TradeNumber = "UT-MARGIN-SHADOW", ClientId = 999998,
+            TradeType = "收益互换", TradeDate = StartDate, StartDate = StartDate,
+            ExerciseDate = ExerciseDate, TradeStatus = "确认成交", ValidState = "Valid",
+            trade_extend = new trade_extend
+            {
+                TradeId = 1,
+                ExtendJson = JsonConvert.SerializeObject(new TradeExtendJson
+                { AnnualDays = AnnualDays, InterestCalcMode = "10", SettlementRules = 0 })
+            }
+        };
+
+        /// <summary>保证金腿（初始预付金 mode 5）：固定利率、单利、年化、无浮动标的。</summary>
+        private static swap_position CreateMarginPosition() => new swap_position
+        {
+            id = 2001, SwapTradeId = 1, PosiDirection = 0,
+            InterestDirection = (int)SwapDirectionEnum.收取,
+            InterestMode = (int)InterestModeEnum.初始预付金,
+            InterestRateDefault = Rate, InterestPrincipalFix = Principal,
+            PosiStartDate = StartDate, PosiMatuirityDate = ExerciseDate,
+            IsInitial = true, Invalid = false,
+            InterestType = (int)InterestTypeEnum.单利,
+            IsAnnualized = true, interest_rest_days = 1, interest_rule = 0,
+            FloatRateUnderlyingCode = null, InterestSwapInterval = "[]"
+        };
+
+        /// <summary>构造昨日终 eod_swap_position（已含累计利息 InterestProfitSum 与昨日终本金）。</summary>
+        private static eod_swap_position CreatePreEod(DateTime valueDate, decimal profitSum) => new eod_swap_position
+        {
+            id = 1, SwapTradeId = 1, PositionId = 2001,
+            ValueDate = valueDate,
+            TdInterestPrincipal = Principal, InterestPrincipalFix = Principal,
+            InterestProfitSum = profitSum, PosiNotionalValue = Principal, FloatRate = 0m
+        };
+
+        // ──────────────────────────── EOD 路径 ────────────────────────────
+
+        /// <summary>EOD 续接单日：有历史归档，notional=昨日终本金。</summary>
+        [TestMethod]
+        public void 影子_EOD续接单日_新旧一致()
+        {
+            var td = CreateTrade();
+            var position = CreateMarginPosition();
+            var valueDate = StartDate.AddDays(5);
+            const decimal profitSum = 820m;
+
+            // 旧方法
+            decimal oldI = 0, oldTd = 0;
+            var svc = new StubSvc();
+            svc.CalcDailySimpleInterestByEod(CreatePreEod(StartDate.AddDays(4), profitSum),
+                valueDate, td.StartDate.Value, position, Principal, Principal,
+                new swap_flow_event { InterestRate = Rate }, AnnualDays, 0m, 1m, ref oldI, ref oldTd);
+
+            // 新方法（独立 preEod，相同初始值）
+            var newEvt = svc.CalcMarginInterest(td, valueDate, valueDate, position, Rate, Principal, Principal, 1m,
+                AnnualDays, calcFirst: true, calcLast: true,
+                CreatePreEod(StartDate.AddDays(4), profitSum), 0, add: false, settment: true, interestWindowEmpty: false);
+
+            Console.WriteLine($"旧: I={oldI} Td={oldTd}");
+            Console.WriteLine($"新: I={newEvt.InterestAmount} Td={newEvt.TdInterestAmount} ClosePnL={newEvt.InterestClosePnL}");
+            Assert.AreEqual(oldI, newEvt.InterestAmount, "InterestAmount 一致");
+            Assert.AreEqual(oldTd, newEvt.TdInterestAmount, "TdInterestAmount 一致");
+        }
+
+        /// <summary>EOD 首日（preEod.id==0）：首日初始化 notional=posiPrincipal。</summary>
+        [TestMethod]
+        public void 影子_EOD首日_新旧一致()
+        {
+            var td = CreateTrade();
+            var position = CreateMarginPosition();
+            var valueDate = StartDate;
+
+            decimal oldI = 0, oldTd = 0;
+            var svc = new StubSvc();
+            svc.CalcDailySimpleInterestByEod(new eod_swap_position { id = 0 },
+                valueDate, td.StartDate.Value, position, Principal, Principal,
+                new swap_flow_event { InterestRate = Rate }, AnnualDays, 0m, 1m, ref oldI, ref oldTd);
+
+            var newEvt = svc.CalcMarginInterest(td, valueDate, valueDate, position, Rate, Principal, Principal, 1m,
+                AnnualDays, calcFirst: true, calcLast: true,
+                new eod_swap_position { id = 0 }, 0, add: false, settment: true, interestWindowEmpty: false);
+
+            Assert.AreEqual(oldI, newEvt.InterestAmount, "InterestAmount 一致");
+            Assert.AreEqual(oldTd, newEvt.TdInterestAmount, "TdInterestAmount 一致");
+        }
+
+        // ──────────────────────────── 盘中路径 ────────────────────────────
+
+        /// <summary>盘中全平（closePercent=1）：新方法 notional=posiPrincipal，旧方法差分 accrualBasis 恒=posiPrincipal。</summary>
+        [TestMethod]
+        public void 影子_盘中全平_新旧一致()
+        {
+            var td = CreateTrade();
+            var position = CreateMarginPosition();
+            var valueDate = StartDate.AddDays(5);
+            const decimal profitSum = 820m;
+
+            // 旧方法：orginPv 经 PreviousBalance 对齐到昨日终保证金余额 → accrualBasis 恒= Principal
+            decimal oldI = 0, oldTd = 0;
+            var svc = new StubSvc();
+            var preEodOld = CreatePreEod(StartDate.AddDays(4), profitSum);
+            decimal orginPv = MarginCalc.PreviousBalance(preEodOld, Principal);
+            svc.CalcDailySimpleInterest(preEodOld, valueDate, position, Principal,
+                new swap_flow_event { InterestRate = Rate }, AnnualDays, 0m, 1m, orginPv,
+                calcFirst: true, calcLast: false, ref oldI, ref oldTd);
+
+            // 新方法：notional = posiPrincipal（无差分、无 orginPv）
+            var newEvt = svc.CalcMarginInterest(td, valueDate, valueDate, position, Rate, Principal, Principal, 1m,
+                AnnualDays, calcFirst: true, calcLast: false,
+                CreatePreEod(StartDate.AddDays(4), profitSum), 0, add: false, settment: false, interestWindowEmpty: false);
+
+            Console.WriteLine($"旧: I={oldI} Td={oldTd}");
+            Console.WriteLine($"新: I={newEvt.InterestAmount} Td={newEvt.TdInterestAmount}");
+            Assert.AreEqual(oldI, newEvt.InterestAmount, "InterestAmount 一致");
+            Assert.AreEqual(oldTd, newEvt.TdInterestAmount, "TdInterestAmount 一致");
+        }
+
+        /// <summary>盘中部分平仓（closePercent=0.5）：缩放累计，新旧线性等价。</summary>
+        [TestMethod]
+        public void 影子_盘中部分平仓_新旧一致()
+        {
+            var td = CreateTrade();
+            var position = CreateMarginPosition();
+            var valueDate = StartDate.AddDays(5);
+            const decimal profitSum = 820m;
+            const decimal closePct = 0.5m;
+
+            decimal oldI = 0, oldTd = 0;
+            var svc = new StubSvc();
+            var preEodOld = CreatePreEod(StartDate.AddDays(4), profitSum);
+            decimal orginPv = MarginCalc.PreviousBalance(preEodOld, Principal);
+            svc.CalcDailySimpleInterest(preEodOld, valueDate, position, Principal,
+                new swap_flow_event { InterestRate = Rate }, AnnualDays, 0m, closePct, orginPv,
+                calcFirst: true, calcLast: false, ref oldI, ref oldTd);
+
+            var newEvt = svc.CalcMarginInterest(td, valueDate, valueDate, position, Rate,
+                Principal * closePct, Principal, closePct,
+                AnnualDays, calcFirst: true, calcLast: false,
+                CreatePreEod(StartDate.AddDays(4), profitSum), 0, add: false, settment: false, interestWindowEmpty: false);
+
+            Console.WriteLine($"旧: I={oldI} Td={oldTd}");
+            Console.WriteLine($"新: I={newEvt.InterestAmount} Td={newEvt.TdInterestAmount}");
+            Assert.AreEqual(oldI, newEvt.InterestAmount, "InterestAmount 一致");
+            Assert.AreEqual(oldTd, newEvt.TdInterestAmount, "TdInterestAmount 一致");
+        }
+
+        /// <summary>互换事件（swap=true，盘中）：利息应归零。</summary>
+        [TestMethod]
+        public void 影子_盘中互换_利息归零()
+        {
+            var td = CreateTrade();
+            var position = CreateMarginPosition();
+            var valueDate = StartDate.AddDays(5);
+
+            var svc = new StubSvc();
+            var newEvt = svc.CalcMarginInterest(td, valueDate, valueDate, position, Rate, Principal, Principal, 1m,
+                AnnualDays, calcFirst: true, calcLast: false,
+                CreatePreEod(StartDate.AddDays(4), 820m), 0, add: false, settment: false, interestWindowEmpty: true);
+
+            Assert.AreEqual(0m, newEvt.InterestAmount, "互换利息归零");
+            Assert.AreEqual(0m, newEvt.TdInterestAmount, "互换 TdInterestAmount 归零");
+            Assert.AreEqual(0m, newEvt.InterestClosePnL, "互换 InterestClosePnL 归零");
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/Margin/MarginLegTest.cs

@@ -1,121 +0,0 @@
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using YLErp.Derivatives.Interest;
-using YLErp.Modules.SwapModule.Margin;
-
-namespace UnitTestProject.Modules.SwapModule.Margin
-{
-    /// <summary>
-    /// 保证金账户(MarginAccount)单测。验证余额变动（追加/释放/返还）。
-    /// 保证金就是保证金——有余额、有利率、有利息，不存在"计息基数/Notional"概念。
-    /// </summary>
-    [TestClass]
-    public class MarginLegTest
-    {
-        private const decimal Opening = 2_000_000m;
-
-        #region MarginAccount 余额变动
-
-        [TestMethod]
-        public void 账户_初始余额等于期初保证金()
-        {
-            var account = new MarginAccount(new MarginBalance(Opening));
-            Assert.AreEqual(Opening, account.Balance.Balance);
-        }
-
-        [TestMethod]
-        public void 账户_追加保证金_余额增加()
-        {
-            var account = new MarginAccount(new MarginBalance(Opening));
-            account.Deposit(500_000m);
-            Assert.AreEqual(2_500_000m, account.Balance.Balance);
-        }
-
-        [TestMethod]
-        public void 账户_释放保证金_余额减少()
-        {
-            var account = new MarginAccount(new MarginBalance(Opening));
-            account.Withdraw(800_000m);
-            Assert.AreEqual(1_200_000m, account.Balance.Balance);
-        }
-
-        [TestMethod]
-        public void 账户_释放超过余额_不低于零()
-        {
-            var account = new MarginAccount(new MarginBalance(Opening));
-            account.Withdraw(3_000_000m);
-            Assert.AreEqual(0m, account.Balance.Balance, "保证金余额不低于零");
-        }
-
-        #endregion
-
-        #region 三种保证金形态解析器
-
-        [TestMethod]
-        public void 三种形态解析器_各自返回正确Form和余额()
-        {
-            IMarginResolver cash = new CashMargin();
-            IMarginResolver credit = new CreditMargin();
-            IMarginResolver guarantee = new GuaranteeMargin();
-
-            Assert.AreEqual(MarginForm.Cash, cash.Form);
-            Assert.AreEqual(MarginForm.Credit, credit.Form);
-            Assert.AreEqual(MarginForm.Guarantee, guarantee.Form);
-
-            Assert.AreEqual(Opening, cash.Resolve(Opening).Balance);
-            Assert.AreEqual(Opening, credit.Resolve(Opening).Balance);
-            Assert.AreEqual(Opening, guarantee.Resolve(Opening).Balance);
-        }
-
-        #endregion
-
-        #region MarginAccount 计息
-
-        [TestMethod]
-        public void 计息_单利7天_余额200万年化3pct()
-        {
-            var account = new MarginAccount(new MarginBalance(2_000_000m));
-            // 200万 × 3% / 365 × 7天 = 1150.68...
-            var r = account.AccrueInterest(
-                rate: 0.03m,
-                startDate: new System.DateTime(2026, 5, 4),
-                endDate: new System.DateTime(2026, 5, 11),
-                boundary: AccrualBoundary.StartOnly,
-                annualDays: 365);
-
-            Assert.IsTrue(r.Accrued > 0, "7天利息应大于0");
-            System.Console.WriteLine($"保证金7天利息={r.Accrued}");
-        }
-
-        [TestMethod]
-        public void 计息_零余额_利息为零()
-        {
-            var account = new MarginAccount(new MarginBalance(0m));
-            var r = account.AccrueInterest(0.03m,
-                new System.DateTime(2026, 5, 4), new System.DateTime(2026, 5, 11),
-                AccrualBoundary.StartOnly, 365);
-
-            Assert.AreEqual(0m, r.Accrued);
-        }
-
-        [TestMethod]
-        public void 计息_释放后余额减少_利息相应减少()
-        {
-            var full = new MarginAccount(new MarginBalance(2_000_000m));
-            var half = new MarginAccount(new MarginBalance(2_000_000m));
-            half.Withdraw(1_000_000m);
-
-            var rFull = full.AccrueInterest(0.03m,
-                new System.DateTime(2026, 5, 4), new System.DateTime(2026, 5, 11),
-                AccrualBoundary.StartOnly, 365);
-            var rHalf = half.AccrueInterest(0.03m,
-                new System.DateTime(2026, 5, 4), new System.DateTime(2026, 5, 11),
-                AccrualBoundary.StartOnly, 365);
-
-            Assert.IsTrue(rHalf.Accrued < rFull.Accrued, "释放后利息应更少");
-            Assert.IsTrue(System.Math.Abs(rFull.Accrued - rHalf.Accrued * 2m) < 0.01m,
-                "余额减半, 利息也应减半");
-        }
-
-        #endregion
-    }
-}

UnitTestProject/Modules/SwapModule/Margin/MarginModesTest.cs

@@ -8,7 +8,7 @@ namespace UnitTestProject.Modules.SwapModule.Margin
 {
     /// <summary>
     /// MarginModes 统一判断口径测试。
-    /// 验证它和现有散落的 marginTypes/InterestMarginModels/premiumModes 内容一致。
+    /// 验证 MarginModes 由框架常量 ConsTrade.InterestMarginModels 派生，内容一致。
     /// </summary>
     [TestClass]
     public class MarginModesTest
@@ -37,7 +37,7 @@ namespace UnitTestProject.Modules.SwapModule.Margin
             Assert.IsFalse(MarginModes.Contains((int)InterestModeEnum.标的期初全价));
         }
 
-        /// <summary>守护：和 ConsTrade.InterestMarginModels 内容必须一致(迁移期对齐)。</summary>
+        /// <summary>回归护栏：MarginModes 由 ConsTrade.InterestMarginModels 派生，内容须一致（防止有人又独立重写集合导致口径分裂）。</summary>
         [TestMethod]
         public void 与ConsTradeInterestMarginModels内容一致()
         {

UnitTestProject/Modules/SwapModule/MultiStepConservationTest.cs

@@ -119,8 +119,8 @@ namespace YLErp.Modules.SwapModule
             var position = CreateInterestPosition();
             var interests = service.GetInterests(td, td.trade_extend, unwindDate, unwindDate,
                 new List<eod_swap_position>(), new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, Principal, Principal,
+                Principal, Principal, 1m,
+                (int)SwapEventTypeEnum.平仓, false, Principal,
                 add: false, settment: false, newCalcLast: false);
             return interests.Count > 0 ? interests[0].InterestAmount : 0m;
         }
@@ -142,8 +142,8 @@ namespace YLErp.Modules.SwapModule
             };
             var interests = service.GetInterests(td, td.trade_extend, valueDate, valueDate,
                 new List<eod_swap_position> { preEod }, new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, Principal, Principal,
+                Principal, Principal, 1m,
+                (int)SwapEventTypeEnum.平仓, false, Principal,
                 add: false, settment: true, newCalcLast: false);
             if (interests.Count == 0) return (0m, 0m);
             return (interests[0].TdInterestAmount, interests[0].InterestAmount);
@@ -313,8 +313,8 @@ namespace YLErp.Modules.SwapModule
             var svc5 = new StubDealService(0m, floatRate: 0.001);
             var i5 = svc5.GetInterests(td, td.trade_extend, day5, day5,
                 new List<eod_swap_position>(), new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, Principal, Principal,
+                Principal, Principal, 1m,
+                (int)SwapEventTypeEnum.平仓, false, Principal,
                 settment: false);
             decimal swap1 = i5.Count > 0 ? i5[0].InterestAmount : 0m;
 
@@ -322,8 +322,8 @@ namespace YLErp.Modules.SwapModule
             var svc10 = new StubDealService(swap1, floatRate: 0.001);
             var i10 = svc10.GetInterests(td, td.trade_extend, day10, day10,
                 new List<eod_swap_position>(), new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, Principal, Principal,
+                Principal, Principal, 1m,
+                (int)SwapEventTypeEnum.平仓, false, Principal,
                 settment: false);
             decimal swap2 = i10.Count > 0 ? i10[0].InterestAmount : 0m;
 
@@ -332,8 +332,8 @@ namespace YLErp.Modules.SwapModule
             var svc15 = new StubDealService(totalConsumed, floatRate: 0.001);
             var i15 = svc15.GetInterests(td, td.trade_extend, day15, day15,
                 new List<eod_swap_position>(), new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, Principal, Principal,
+                Principal, Principal, 1m,
+                (int)SwapEventTypeEnum.平仓, false, Principal,
                 settment: false);
             decimal finalUnwind = i15.Count > 0 ? i15[0].InterestAmount : 0m;
 
@@ -362,8 +362,8 @@ namespace YLErp.Modules.SwapModule
             var svc = new StubDealService(0m, floatRate: 0.001);
             var interests = svc.GetInterests(td, td.trade_extend, unwindDate, unwindDate,
                 new List<eod_swap_position>(), new List<swap_position> { position },
-                Principal, Principal, Principal, Principal, 1m,
-                (int)SwapEventTypeEnum.平仓, false, false, Principal, Principal,
+                Principal, Principal, 1m,
+                (int)SwapEventTypeEnum.平仓, false, Principal,
                 settment: false);
             return interests.Count > 0 ? interests[0].InterestAmount : 0m;
         }

UnitTestProject/Modules/SwapModule/Penalty/PenaltyBoundaryMatrixTest.cs

@@ -0,0 +1,211 @@
+using YLErp.Modules.SwapModule.Accrual;
+using YLErp.Modules.SwapModule.Penalty;
+
+namespace UnitTestProject.Modules.SwapModule.Penalty
+{
+    /// <summary>
+    /// EQD-6977 罚息边界矩阵测试（全部断言金标准恒等式：全期 = 实结 + 罚息）。
+    ///
+    /// 覆盖易错边界：
+    ///   ① 平仓日恰为重置日（算尾/不算尾）——重置日快照基数还是上一段的，①须取 InterestIncomeSum；
+    ///   ② 重置日前一日平仓（② 几乎整段、窗口首段 0 天）；
+    ///   ③ 到期日恰为重置日（末段 [到期,到期] 1 天）；
+    ///   ④ 锚点偏离（td.StartDate=7/31 但腿 PosiStartDate=8/3 的延期/存续腿——重置网格整体不同）；
+    ///   ⑤ 起息日当天平仓（无 preEod）。
+    ///
+    /// 一致性前提（与现实世界对齐）：冻结利率 = 当前重置区间（含 unwind-1 的区间）的在役利率，
+    /// 即"历史末段利率 = 冻结利率"；历史各段定盘不同（体现真实 FR007 利率历史）。
+    /// </summary>
+    [TestClass]
+    public class PenaltyBoundaryMatrixTest
+    {
+        private const decimal Notional = 100_000_000m;
+        private const int AnnualDays = 365;
+        private static readonly decimal[] Hist = { 0.0310m, 0.0420m, 0.0530m, 0.0225m }; // 7/31 / 8/7 / 8/14 / 8/21 段
+        private static readonly decimal Frozen = Hist[^1]; // 冻结 = 当前区间在役利率 = 历史末段
+
+        /// <summary>指定重置网格上的复利重放 [gridStart, end]；超出所给历史段后沿用冻结利率。</summary>
+        private static decimal AccrueOnGrid(DateTime gridStart, DateTime end, AccrualBoundary boundary,
+            decimal[] histRates, decimal notional = Notional, int period = 7)
+        {
+            var frozen = histRates[^1];
+            var segs = new List<(DateTime, decimal)>();
+            var i = 0;
+            for (var d = gridStart; d <= end; d = d.AddDays(period))
+                segs.Add((d, i < histRates.Length ? histRates[i++] : frozen));
+            return CompoundInterestAccrual.AccruePeriod(
+                notional: notional, segmentRates: segs,
+                startDate: gridStart, endDate: end,
+                boundary: boundary, annualDays: AnnualDays, isAnnualized: true,
+                resetCarryInterest: 0m, realizedInterest: 0m, unwindFraction: 1m,
+                finalBasis: out _).Accrued;
+        }
+
+        private static trade CreateTrade(DateTime startDate, DateTime maturity)
+            => new()
+            {
+                id = 1, TradeNumber = "UT-BOUNDARY", ClientId = 999998,
+                TradeType = "收益互换", TradeDate = startDate, StartDate = startDate,
+                ExerciseDate = maturity, TradeStatus = "确认成交", ValidState = "Valid"
+            };
+
+        private static swap_position CompoundLeg(DateTime posiStart, DateTime maturity, decimal spread, int periodDays = 7)
+            => new()
+            {
+                id = 1001, SwapTradeId = 1, PosiDirection = 0, InterestDirection = 1,
+                InterestMode = (int)InterestModeEnum.标的期初全价, InterestRateDefault = spread,
+                InterestPrincipalFix = Notional, PosiStartDate = posiStart, PosiMatuirityDate = maturity,
+                IsInitial = true, Invalid = false, InterestType = (int)InterestTypeEnum.复利,
+                IsAnnualized = true, interest_rest_days = periodDays, interest_rule = 0,
+                FloatRateUnderlyingCode = null, InterestSwapInterval = "[]"
+            };
+
+        /// <summary>日终快照：TdInterestPrincipal=当日实际滚动基数、InterestIncomeSum=截至当日待实现利息。</summary>
+        private static eod_swap_position Snap(DateTime valueDate, decimal rollingBasis, decimal incomeSum)
+            => new() { id = 9, PositionId = 1001, ValueDate = valueDate,
+                       TdInterestPrincipal = rollingBasis, InterestIncomeSum = incomeSum };
+
+        private static decimal RunFee(trade td, swap_position p, decimal settledAmount,
+            eod_swap_position? preEod, DateTime unwind, bool settled, decimal spread,
+            decimal interestPrincipal = 0m, bool maturityCalcLast = true)
+        {
+            var e = new swap_flow_event
+            {
+                PositionId = p.id, InterestAmount = settledAmount, InterestFee = 0m,
+                InterestDirection = 1, InterestClosePnL = settledAmount,
+                InterestPrincipal = interestPrincipal // 复利主路径下=重放末次并本金后基数(=被平份额本金+①)
+            };
+            PenaltyInterestFeeMerger.Merge(
+                td, new List<swap_position> { p }, new List<swap_flow_event> { e },
+                unwind, AnnualDays, settled, maturityCalcLast: maturityCalcLast,
+                posiNotionalValue: Notional, closePosiNotionalValue: Notional, closePercent: 1m,
+                getSpread: _ => spread, getPreEod: _ => preEod, tryGetFixing: (d, c) => spread);
+            return e.InterestFee;
+        }
+
+        [TestMethod]
+        public void 平仓日恰为重置日_算尾_恒等式成立()
+        {
+            var start = new DateTime(2026, 7, 31); var unwind = new DateTime(2026, 8, 21); var maturity = new DateTime(2026, 8, 31);
+            var elapsed = AccrueOnGrid(start, unwind, AccrualBoundary.Both, Hist);          // [7/31..8/21]（末日=重置日，1 天）
+            var basisThru813 = AccrueOnGrid(start, new DateTime(2026, 8, 13), AccrualBoundary.Both, Hist); // 8/14 起段基数
+            var incomeSum = AccrueOnGrid(start, unwind.AddDays(-1), AccrualBoundary.Both, Hist);           // 8/20 待实现
+
+            // 前提自检：重置日快照基数(8/14段)≠今日应并入额(8/20待实现)，旧公式(basis−P)必错——用例有鉴别力
+            Assert.AreNotEqual((double)basisThru813, (double)incomeSum, 1000d, "快照基数与重置日应并入额应显著不同");
+
+            var fee = RunFee(CreateTrade(start, maturity), CompoundLeg(start, maturity, Frozen), elapsed,
+                Snap(unwind.AddDays(-1), Notional + basisThru813, incomeSum), unwind, settled: true, spread: Frozen);
+
+            var full = AccrueOnGrid(start, maturity, AccrualBoundary.Both, Hist);
+            Assert.AreEqual((double)full, (double)(elapsed + fee), 0.01,
+                "重置日当天平仓(算尾)：① 须取 InterestIncomeSum，全期=实结+罚息");
+        }
+
+        [TestMethod]
+        public void 平仓日恰为重置日_不算尾_恒等式成立()
+        {
+            var start = new DateTime(2026, 7, 31); var unwind = new DateTime(2026, 8, 21); var maturity = new DateTime(2026, 8, 31);
+            var elapsed = AccrueOnGrid(start, unwind, AccrualBoundary.StartOnly, Hist);     // [7/31..8/20]
+            var incomeSum = elapsed;                                                        // 不算尾时实结=8/20待实现
+            var basisThru813 = AccrueOnGrid(start, new DateTime(2026, 8, 13), AccrualBoundary.Both, Hist);
+
+            var fee = RunFee(CreateTrade(start, maturity), CompoundLeg(start, maturity, Frozen), elapsed,
+                Snap(unwind.AddDays(-1), Notional + basisThru813, incomeSum), unwind, settled: false, spread: Frozen);
+
+            var full = AccrueOnGrid(start, maturity, AccrualBoundary.Both, Hist);
+            Assert.AreEqual((double)full, (double)(elapsed + fee), 0.01,
+                "重置日当天平仓(不算尾)：②=0，罚息含平仓日，全期=实结+罚息");
+        }
+
+        [TestMethod]
+        public void 重置日前一日平仓_段内几乎整段承接_恒等式成立()
+        {
+            var start = new DateTime(2026, 7, 31); var unwind = new DateTime(2026, 8, 27); var maturity = new DateTime(2026, 8, 31);
+            var elapsed = AccrueOnGrid(start, unwind, AccrualBoundary.Both, Hist);          // [7/31..8/27]，段内已计 8/21..8/27
+            var basisThru820 = AccrueOnGrid(start, new DateTime(2026, 8, 20), AccrualBoundary.Both, Hist); // 8/21 起段基数
+            var incomeSum = AccrueOnGrid(start, unwind.AddDays(-1), AccrualBoundary.Both, Hist);
+
+            var fee = RunFee(CreateTrade(start, maturity), CompoundLeg(start, maturity, Frozen), elapsed,
+                Snap(unwind.AddDays(-1), Notional + basisThru820, incomeSum), unwind, settled: true, spread: Frozen);
+
+            var full = AccrueOnGrid(start, maturity, AccrualBoundary.Both, Hist);
+            Assert.AreEqual((double)full, (double)(elapsed + fee), 0.01,
+                "重置日前一日平仓：窗口首段 0 天、② 于 8/28 整段并入，全期=实结+罚息");
+        }
+
+        [TestMethod]
+        public void 到期日恰为重置日_末段一天_恒等式成立()
+        {
+            // 8/18 平仓：当前区间为 8/14 段(r3) → 冻结利率=r3=历史末段；到期 9/4 恰为重置日（末段 [9/4,9/4] 1 天）
+            var start = new DateTime(2026, 7, 31); var unwind = new DateTime(2026, 8, 18); var maturity = new DateTime(2026, 9, 4);
+            var hist = new decimal[] { 0.0310m, 0.0420m, 0.0530m }; // 7/31 / 8/7 / 8/14(=冻结 5.3%)
+            var elapsed = AccrueOnGrid(start, unwind, AccrualBoundary.Both, hist);
+            var basisThru813 = AccrueOnGrid(start, new DateTime(2026, 8, 13), AccrualBoundary.Both, hist);
+            var incomeSum = AccrueOnGrid(start, unwind.AddDays(-1), AccrualBoundary.Both, hist);
+
+            var fee = RunFee(CreateTrade(start, maturity), CompoundLeg(start, maturity, hist[^1]), elapsed,
+                Snap(unwind.AddDays(-1), Notional + basisThru813, incomeSum), unwind, settled: true, spread: hist[^1]);
+
+            var full = AccrueOnGrid(start, maturity, AccrualBoundary.Both, hist);
+            Assert.AreEqual((double)full, (double)(elapsed + fee), 0.01,
+                "到期日=重置日：末段 [9/4,9/4] 1 天收尾，全期=实结+罚息");
+        }
+
+        [TestMethod]
+        public void 锚点偏离_延期腿按腿起息日网格_恒等式成立()
+        {
+            // 交易起始 7/31，但腿 PosiStartDate=8/3（延期/存续腿）→ 真实重置网格 8/10/8/17/8/24/8/31
+            var tradeStart = new DateTime(2026, 7, 31); var posiStart = new DateTime(2026, 8, 3);
+            var unwind = new DateTime(2026, 8, 19); var maturity = new DateTime(2026, 9, 3);
+            var hist = new decimal[] { 0.0300m, 0.0400m, 0.0225m }; // 8/3 / 8/10 / 8/17(=冻结) 三段历史
+
+            var elapsed = AccrueOnGrid(posiStart, unwind, AccrualBoundary.Both, hist);
+            var basisThru816 = AccrueOnGrid(posiStart, new DateTime(2026, 8, 16), AccrualBoundary.Both, hist); // 8/17 起段基数
+            var incomeSum = AccrueOnGrid(posiStart, unwind.AddDays(-1), AccrualBoundary.Both, hist);
+
+            var fee = RunFee(CreateTrade(tradeStart, maturity), CompoundLeg(posiStart, maturity, hist[^1]), elapsed,
+                Snap(unwind.AddDays(-1), Notional + basisThru816, incomeSum), unwind, settled: true, spread: hist[^1]);
+
+            var full = AccrueOnGrid(posiStart, maturity, AccrualBoundary.Both, hist);
+            Assert.AreEqual((double)full, (double)(elapsed + fee), 0.01,
+                "锚点偏离：罚息分段/重置日判定必须用 position.PosiStartDate 网格（误用 td.StartDate 网格必挂）");
+        }
+
+        [TestMethod]
+        public void 无preEod且此前已有重置_经事件基数兜底_恒等式精确成立()
+        {
+            // UAT 实测场景（tradeId=2447）：环境无日终快照、起息后已发生 8/19 重置并本。
+            // 兜底① = normalEvent.InterestPrincipal − 本金（复利重放末次并本金后基数）；
+            // 修复前 ①=0 少算 ≈3.17 元（并入额×冻结利率×段尾天数），本用例钉死兜底路径的精确性。
+            var start = new DateTime(2026, 8, 5); var unwind = new DateTime(2026, 8, 20); var maturity = new DateTime(2026, 9, 30);
+            var hist = new decimal[] { 0.0216m, 0.0144m }; // 8/5 段 2.16% / 8/19 段 1.44%(=冻结)，14 天重置
+            var elapsed = AccrueOnGrid(start, unwind, AccrualBoundary.StartOnly, hist, period: 14); // 已结 [8/5..8/19]
+            var replayFinalBasis = Notional + AccrueOnGrid(start, new DateTime(2026, 8, 18), AccrualBoundary.Both, hist, period: 14); // 8/19 重置并本后基数
+
+            var fee = RunFee(CreateTrade(start, maturity), CompoundLeg(start, maturity, hist[^1], periodDays: 14), elapsed,
+                preEod: null, unwind: unwind, settled: false, spread: hist[^1],
+                interestPrincipal: replayFinalBasis, maturityCalcLast: false); // 不算尾合约、14天重置（对应 UAT tradeId=2447 口径）
+
+            var full = AccrueOnGrid(start, maturity, AccrualBoundary.StartOnly, hist, period: 14);
+            Assert.AreEqual((double)full, (double)(elapsed + fee), 0.01,
+                "无preEod+已有重置：兜底取事件基数后 ① 精确，全期=实结+罚息（修复前差≈3.17元）");
+        }
+
+        [TestMethod]
+        public void 起息日当天平仓_无preEod_恒等式成立()
+        {
+            // 首日平仓：当前区间=首段(r1)，无 preEod 时取价委托返回首段定盘 → 冻结利率=r1，全程恒率
+            var start = new DateTime(2026, 7, 31); var maturity = new DateTime(2026, 8, 31);
+            var hist = new decimal[] { 0.0310m };
+            var elapsed = AccrueOnGrid(start, start, AccrualBoundary.Both, hist); // 首日 1 天
+
+            var fee = RunFee(CreateTrade(start, maturity), CompoundLeg(start, maturity, hist[^1]), elapsed,
+                preEod: null, unwind: start, settled: true, spread: hist[^1]);
+
+            var full = AccrueOnGrid(start, maturity, AccrualBoundary.Both, hist);
+            Assert.AreEqual((double)full, (double)(elapsed + fee), 0.01,
+                "起息日当天平仓：①=0、②=首日利息于 8/7 并入，全期=实结+罚息");
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/Penalty/PenaltyInterestFeeMergerTest.cs

@@ -0,0 +1,167 @@
+using YLErp.Modules.SwapModule.Accrual;
+using YLErp.Modules.SwapModule.Penalty;
+
+namespace UnitTestProject.Modules.SwapModule.Penalty
+{
+    /// <summary>
+    /// EQD-6977 罚息接缝 headless 测试（无 DB：spread/preEod/取价 全部以委托注入）。
+    /// 锁定：Merge 把罚息金额并入既有利息事件的 InterestFee（不新增事件、不改 InterestAmount）；
+    /// 承接量取实际计息状态（preEod 基数 + 事件实结金额）——含【多区间不同定盘】恒等式钉死，
+    /// 该用例在"冻结利率重放推导承接量"的旧实现下必挂（FR007 真实利率历史场景）。
+    /// </summary>
+    [TestClass]
+    public class PenaltyInterestFeeMergerTest
+    {
+        private const decimal Notional = 100_000_000m;
+        private const decimal Rate = 0.0225m; // 冻结 all-in 年化
+        private const int AnnualDays = 365;
+        private static readonly DateTime StartDate = new(2026, 7, 31);
+        private static readonly DateTime MaturityDate = new(2026, 8, 31);
+        private static readonly DateTime UnwindDate = new(2026, 8, 25);
+        private static readonly DateTime LastResetBeforeUnwind = new(2026, 8, 21);
+
+        private static trade CreateTrade()
+            => new()
+            {
+                id = 1, TradeNumber = "UT-MERGE", ClientId = 999998,
+                TradeType = "收益互换", StartDate = StartDate, TradeDate = StartDate,
+                ExerciseDate = MaturityDate, TradeStatus = "确认成交", ValidState = "Valid"
+            };
+
+        private static swap_position Leg(InterestTypeEnum interestType)
+            => new()
+            {
+                id = 1001, SwapTradeId = 1, PosiDirection = 0, InterestDirection = 1,
+                InterestMode = (int)InterestModeEnum.标的期初全价, InterestRateDefault = Rate,
+                InterestPrincipalFix = Notional, PosiStartDate = StartDate, PosiMatuirityDate = MaturityDate,
+                IsInitial = true, Invalid = false, InterestType = (int)interestType,
+                IsAnnualized = true, interest_rest_days = 7, interest_rule = 0,
+                FloatRateUnderlyingCode = null, InterestSwapInterval = "[]"
+            };
+
+        /// <summary>正常平仓利息流（模拟 GetInterests 产出）：InterestAmount=实结利息、InterestFee=0。</summary>
+        private static swap_flow_event NormalEvent(decimal settledAmount)
+            => new() { PositionId = 1001, InterestAmount = settledAmount, InterestFee = 0m,
+                       InterestDirection = 1, InterestClosePnL = settledAmount }; // 模拟 GetInterests 已算好的 PnL（收取=+1）
+
+        private static eod_swap_position PreEod(decimal rollingBasis, decimal floatRate = 0m)
+            => new() { id = 9, PositionId = 1001, ValueDate = UnwindDate.AddDays(-1),
+                       TdInterestPrincipal = rollingBasis, FloatRate = floatRate };
+
+        private static void RunMerge(
+            swap_position p, swap_flow_event normalEvent, eod_swap_position? preEod,
+            Func<swap_position, decimal>? getSpread = null, Func<DateTime, string, decimal?>? tryGetFixing = null)
+        {
+            getSpread ??= _ => Rate;
+            tryGetFixing ??= (d, code) => Rate;
+            PenaltyInterestFeeMerger.Merge(
+                CreateTrade(), new List<swap_position> { p }, new List<swap_flow_event> { normalEvent },
+                UnwindDate, AnnualDays,
+                unwindDaySettled: true, maturityCalcLast: true,
+                posiNotionalValue: Notional, closePosiNotionalValue: Notional, closePercent: 1m,
+                getSpread: getSpread,
+                getPreEod: _ => preEod,
+                tryGetFixing: tryGetFixing);
+        }
+
+        /// <summary>复利重放 [StartDate, endDate]，重置段=每 7 天；分段利率由 rates 决定（rates.Count=1 时为常率）。</summary>
+        private static decimal CompoundAccruedTo(DateTime endDate, AccrualBoundary boundary, params decimal[] rates)
+        {
+            var segs = new List<(DateTime, decimal)>();
+            var i = 0;
+            for (var d = StartDate; d <= endDate; d = d.AddDays(7))
+                // 超出所给历史段后沿用最后区间利率——即“未来段冻结为最后区间利率”的语义（勿循环回绕）
+                segs.Add((d, rates.Length == 1 ? rates[0] : i < rates.Length ? rates[i++] : rates[^1]));
+            return CompoundInterestAccrual.AccruePeriod(
+                notional: Notional, segmentRates: segs,
+                startDate: StartDate, endDate: endDate,
+                boundary: boundary, annualDays: AnnualDays, isAnnualized: true,
+                resetCarryInterest: 0m, realizedInterest: 0m, unwindFraction: 1m,
+                finalBasis: out _).Accrued;
+        }
+
+        [TestMethod]
+        public void 单利固定腿_罚息并入InterestFee_不新增事件()
+        {
+            var e = NormalEvent(settledAmount: 50_000m);
+            RunMerge(Leg(InterestTypeEnum.单利), e, preEod: PreEod(Notional));
+
+            Assert.AreEqual(0d, (double)(e.InterestFee - Rate * Notional * 6m / AnnualDays), 0.0001,
+                "罚息=利率×本金×6天/基准（窗口 (8/25, 8/31]）");
+            Assert.AreEqual(50_000d, (double)e.InterestAmount, 0.0001, "正常实结利息不受影响");
+            Assert.AreEqual((double)(50_000m + e.InterestFee), (double)e.InterestClosePnL, 0.0001, "PnL=（实结+罚息）×方向(收取=+1)");
+        }
+
+        [TestMethod]
+        public void 浮动腿_取价委托解析冻结率_并入费用()
+        {
+            var p = Leg(InterestTypeEnum.单利);
+            p.FloatRateUnderlyingCode = "FR007";
+            var e = NormalEvent(settledAmount: 50_000m);
+            // 无 preEod → 走取价委托：all-in = spread(0) + 定盘(Rate)
+            RunMerge(p, e, preEod: null, getSpread: _ => 0m, tryGetFixing: (d, code) => Rate);
+
+            Assert.AreEqual(0d, (double)(e.InterestFee - Rate * Notional * 6m / AnnualDays), 0.0001,
+                "浮动腿冻结率=取价委托值(零利差)");
+        }
+
+        [TestMethod]
+        public void 复利常率_承接取实际状态_恒等式全期等于已结加罚息()
+        {
+            // 实际计息状态：preEod 滚动基数 = P + 已并入利息(截至 8/20)；事件实结 = elapsed([7/31,8/25] Both)
+            var capitalized = CompoundAccruedTo(LastResetBeforeUnwind.AddDays(-1), AccrualBoundary.Both, Rate);
+            var elapsed = CompoundAccruedTo(UnwindDate, AccrualBoundary.Both, Rate);
+            var e = NormalEvent(elapsed);
+            RunMerge(Leg(InterestTypeEnum.复利), e, preEod: PreEod(Notional + capitalized));
+
+            var full = CompoundAccruedTo(MaturityDate, AccrualBoundary.Both, Rate);
+            Assert.AreEqual((double)full, (double)(elapsed + e.InterestFee), 0.0001,
+                "常率下 全期 = 已结(事件实结) + 罚息(InterestFee)");
+        }
+
+        [TestMethod]
+        public void 复利多区间不同定盘_承接取实际状态_恒等式仍成立()
+        {
+            // 真实 FR007 世界：四个历史重置区间定盘各不相同，冻结利率=最后区间(2.25%)
+            var r1 = 0.0310m; var r2 = 0.0420m; var r3 = 0.0530m; var r4 = Rate; // r4=0.0225 冻结值
+            var rates = new[] { r1, r2, r3, r4 };
+
+            // 实际计息状态（与 GetInterests 重放同源）：
+            var capitalized = CompoundAccruedTo(LastResetBeforeUnwind.AddDays(-1), AccrualBoundary.Both, rates); // 已并入 8/21 重置日
+            var elapsed = CompoundAccruedTo(UnwindDate, AccrualBoundary.Both, rates);                             // 实结（含 8/21..8/25 段内利息）
+            var e = NormalEvent(elapsed);
+            RunMerge(Leg(InterestTypeEnum.复利), e, preEod: PreEod(Notional + capitalized));
+
+            // 全期参照：历史段按各自真实定盘、8/28 起的未来段按冻结利率（=r4，恰好同段延续）
+            var full = CompoundAccruedTo(MaturityDate, AccrualBoundary.Both, rates);
+            Assert.AreEqual((double)full, (double)(elapsed + e.InterestFee), 0.01,
+                "多区间不同定盘下 全期(历史实率+未来冻结) = 实结 + 罚息——承接量必须来自实际状态");
+            // 反证旧缺陷：冻结重放推导的承接①（全程 r4）≠ 实际①（分段实率），差额显著
+            var frozenReplayCapitalized = CompoundAccruedTo(LastResetBeforeUnwind.AddDays(-1), AccrualBoundary.Both, Rate);
+            Assert.AreNotEqual((double)capitalized, (double)frozenReplayCapitalized, 1000d,
+                "前提自检：分段实率与冻结重放的已并入利息应显著不同（否则用例失去鉴别力）");
+        }
+
+        [TestMethod]
+        public void 复利无preEod_承接退化为实结全额_可计算不崩溃()
+        {
+            var elapsed = CompoundAccruedTo(UnwindDate, AccrualBoundary.Both, Rate);
+            var e = NormalEvent(elapsed);
+            RunMerge(Leg(InterestTypeEnum.复利), e, preEod: null);
+
+            Assert.IsTrue(e.InterestFee > 0m, "无 preEod（首日平仓等）仍可计算罚息");
+        }
+
+        [TestMethod]
+        public void 冻结利率解析失败_跳过该腿不阻断()
+        {
+            var p = Leg(InterestTypeEnum.单利);
+            p.FloatRateUnderlyingCode = "FR007";
+            var e = NormalEvent(settledAmount: 50_000m);
+            RunMerge(p, e, preEod: null, getSpread: _ => 0m, tryGetFixing: (d, code) => null);
+
+            Assert.AreEqual(0m, e.InterestFee, "缺价跳过：不加罚息、不抛异常");
+            Assert.AreEqual(50_000d, (double)e.InterestAmount, 0.0001, "正常平仓不受影响");
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/Penalty/PenaltyLegRateResolverTest.cs

@@ -0,0 +1,81 @@
+using YLErp.DBModels.Enums;
+using YLErp.Modules.SwapModule;
+using YLErp.Modules.SwapModule.Accrual;
+using YLErp.Modules.SwapModule.Penalty;
+
+namespace UnitTestProject.Modules.SwapModule.Penalty
+{
+    /// <summary>
+    /// EQD-6977 罚息冻结利率解析契约测试。
+    /// 规则（需求 2.2.2）：冻结为「最后一个重置区间」定盘；终止日为重置日也取上一区间。
+    /// </summary>
+    [TestClass]
+    public class PenaltyLegRateResolverTest
+    {
+        private const decimal Spread = 0.05m; // +500bp
+        private static readonly DateTime UnwindDate = new(2026, 8, 25);
+
+        private static swap_position CreateFloatPosition(int interestRule = 0)
+            => new()
+            {
+                id = 1001, SwapTradeId = 1, PosiDirection = 0,
+                InterestDirection = (int)SwapDirectionEnum.支付,
+                InterestMode = (int)InterestModeEnum.标的期初全价,
+                InterestRateDefault = Spread,
+                PosiStartDate = new DateTime(2026, 7, 31),
+                interest_rest_days = 7, interest_rule = interestRule,
+                FloatRateUnderlyingCode = "FR007",
+                FloatRate = 0.0185m
+            };
+
+        [TestMethod]
+        public void 浮动腿_preEod快照优先_重置日下午仍取上一区间()
+        {
+            // 8/25 为重置日且下午已出新价的边缘场景：preEod.FloatRate（昨日区间定盘）仍优先，
+            // 解析器不做任何取价——「终止日取上一区间」由快照语义天然覆盖。
+            var p = CreateFloatPosition();
+            var rate = PenaltyLegRateResolver.ResolveFrozenRate(
+                p, spread: Spread, preEodFloatRate: 0.0210m,
+                unwindDate: UnwindDate, tryGetFixing: _ => throw new AssertFailedException("preEod 在场时不应取价"));
+
+            Assert.AreEqual(Spread + 0.0210m, rate.AllInRate, "冻结 all-in = 利差 + 上一区间定盘");
+        }
+
+        [TestMethod]
+        public void 浮动腿_无preEod_按前一营业日取价日取定盘()
+        {
+            var p = CreateFloatPosition(interestRule: 0); // 当前营业日规则
+            DateTime? askedDate = null;
+            var rate = PenaltyLegRateResolver.ResolveFrozenRate(
+                p, spread: Spread, preEodFloatRate: null,
+                unwindDate: UnwindDate,
+                tryGetFixing: d => { askedDate = d; return 0.0195m; });
+
+            Assert.AreEqual(new DateTime(2026, 8, 24), askedDate, "取价日 = GetFixingDate(8/24, rule=0)");
+            Assert.AreEqual(Spread + 0.0195m, rate.AllInRate);
+        }
+
+        [TestMethod]
+        public void 浮动腿_无preEod_缺价抛异常()
+        {
+            var p = CreateFloatPosition();
+            Assert.ThrowsException<Exception>(() =>
+                PenaltyLegRateResolver.ResolveFrozenRate(
+                    p, spread: Spread, preEodFloatRate: null,
+                    unwindDate: UnwindDate, tryGetFixing: _ => null));
+        }
+
+        [TestMethod]
+        public void 固定腿_不取价_直接固定利率()
+        {
+            var p = CreateFloatPosition();
+            p.FloatRateUnderlyingCode = null;
+
+            var rate = PenaltyLegRateResolver.ResolveFrozenRate(
+                p, spread: Spread, preEodFloatRate: null,
+                unwindDate: UnwindDate, tryGetFixing: _ => throw new AssertFailedException("固定腿不应取价"));
+
+            Assert.AreEqual(Spread, rate.AllInRate);
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/Penalty/SwapPenaltyInterestCalculatorTest.cs

@@ -0,0 +1,176 @@
+using YLErp;
+using YLErp.DBModels.Enums;
+using YLErp.Modules.SwapModule;
+using YLErp.Modules.SwapModule.Accrual;
+using YLErp.Modules.SwapModule.Penalty;
+
+namespace UnitTestProject.Modules.SwapModule.Penalty
+{
+    /// <summary>
+    /// EQD-6977 平仓罚息计算器契约测试（返回罚息金额）。
+    ///
+    /// 金标准恒等式（需求核心语义，2026-08-20 裁定的精确续接口径）：
+    ///     全期利息 = 平仓日已结利息 + 罚息金额
+    /// 历史口径：7/31 起息、8/31 到期、7 天重置（8/7/8/14/8/21/8/28）、8/25 提前终止
+    /// （平仓日落在 8/21–8/28 重置段中间——复利承接两分量的关键场景）。
+    /// </summary>
+    [TestClass]
+    public class SwapPenaltyInterestCalculatorTest
+    {
+        private const decimal Notional = 100_000_000m;
+        private const decimal Rate = 0.0225m; // 冻结 all-in 年化
+        private const int AnnualDays = 365;
+        private static readonly DateTime StartDate = new(2026, 7, 31);
+        private static readonly DateTime MaturityDate = new(2026, 8, 31);
+        private static readonly DateTime UnwindDate = new(2026, 8, 25);
+        private static readonly DateTime LastResetBeforeUnwind = new(2026, 8, 21);
+
+        private static swap_position CreatePosition(InterestTypeEnum interestType, SwapDirectionEnum direction)
+            => new()
+            {
+                id = 1001, SwapTradeId = 1, PosiDirection = 0,
+                InterestDirection = (int)direction,
+                InterestMode = (int)InterestModeEnum.标的期初全价,
+                InterestRateDefault = Rate,
+                InterestPrincipalFix = Notional,
+                PosiStartDate = StartDate, PosiMatuirityDate = MaturityDate,
+                IsInitial = true, Invalid = false,
+                InterestType = (int)interestType,
+                IsAnnualized = true, interest_rest_days = 7, interest_rule = 0,
+                FloatRateUnderlyingCode = null,
+                InterestSwapInterval = "[]"
+            };
+
+        private static AccrualPolicy Policy(swap_position p)
+            => AccrualPolicy.BuildEod(p, AnnualDays, p.InterestType == (int)InterestTypeEnum.复利);
+
+        /// <summary>常率复利重放 [7/31, endDate]，重置段 = 每 7 天。</summary>
+        private static decimal CompoundAccruedTo(DateTime endDate, AccrualBoundary boundary)
+        {
+            var segs = new List<(DateTime, decimal)>();
+            for (var d = StartDate; d <= endDate; d = d.AddDays(7)) segs.Add((d, Rate));
+            return CompoundInterestAccrual.AccruePeriod(
+                notional: Notional, segmentRates: segs,
+                startDate: StartDate, endDate: endDate,
+                boundary: boundary, annualDays: AnnualDays, isAnnualized: true,
+                resetCarryInterest: 0m, realizedInterest: 0m, unwindFraction: 1m,
+                finalBasis: out _).Accrued;
+        }
+
+        private static decimal CalcCompoundPenalty(
+            swap_position p, decimal closePrincipal, bool settled, decimal capitalized, decimal carryIn)
+            => SwapPenaltyInterestCalculator.CalcPenaltyAmount(
+                p, closePrincipal,
+                unwindDate: UnwindDate, maturityDate: MaturityDate,
+                unwindDaySettled: settled, maturityCalcLast: true,
+                capitalizedInterest: capitalized, carryInInterest: carryIn,
+                frozenRate: FundingLegRate.Fixed(Rate),
+                policy: Policy(p), resetAnchor: StartDate);
+
+        [TestMethod]
+        public void 金标准恒等式_复利_全期等于已结加罚息()
+        {
+            var p = CreatePosition(InterestTypeEnum.复利, SwapDirectionEnum.支付);
+            var elapsed = CompoundAccruedTo(UnwindDate, AccrualBoundary.Both);
+            var capitalized = CompoundAccruedTo(LastResetBeforeUnwind.AddDays(-1), AccrualBoundary.Both);
+            var carryIn = elapsed - capitalized;
+
+            var penalty = CalcCompoundPenalty(p, Notional, settled: true, capitalized, carryIn);
+
+            var full = CompoundAccruedTo(MaturityDate, AccrualBoundary.Both);
+            Assert.AreEqual((double)full, (double)(elapsed + penalty), 0.0001,
+                $"全期({full}) 应等于 已结({elapsed}) + 罚息({penalty})；承接①={capitalized} ②={carryIn}");
+        }
+
+        [TestMethod]
+        public void 金标准恒等式_复利_不算尾平仓日()
+        {
+            // 不算尾：正常结算未计 8/25 → 罚息含 8/25（IncludeStart=true），承接②少一天
+            var p = CreatePosition(InterestTypeEnum.复利, SwapDirectionEnum.支付);
+            var elapsed = CompoundAccruedTo(UnwindDate, AccrualBoundary.StartOnly);
+            var capitalized = CompoundAccruedTo(LastResetBeforeUnwind.AddDays(-1), AccrualBoundary.Both);
+            var carryIn = elapsed - capitalized;
+
+            var penalty = CalcCompoundPenalty(p, Notional, settled: false, capitalized, carryIn);
+
+            var full = CompoundAccruedTo(MaturityDate, AccrualBoundary.Both);
+            Assert.AreEqual((double)full, (double)(elapsed + penalty), 0.0001,
+                "不算尾时罚息窗口须补回平仓日，恒等式仍成立");
+        }
+
+        [TestMethod]
+        public void 单利固定腿_剩余期限利息等于公式()
+        {
+            // 需求 2.2.1：剩余利息 = 固定 × 名义本金 × 剩余天数 / 计息基准
+            // 算尾平仓日 + 到期算尾：窗口 (8/25, 8/31] = 6 天
+            var amount = SwapPenaltyInterestCalculator.CalcPenaltyAmount(
+                CreatePosition(InterestTypeEnum.单利, SwapDirectionEnum.支付), Notional,
+                unwindDate: UnwindDate, maturityDate: MaturityDate,
+                unwindDaySettled: true, maturityCalcLast: true,
+                capitalizedInterest: 0m, carryInInterest: 0m,
+                frozenRate: FundingLegRate.Fixed(Rate),
+                policy: Policy(CreatePosition(InterestTypeEnum.单利, SwapDirectionEnum.支付)),
+                resetAnchor: StartDate);
+
+            var expected = Rate * Notional * 6m / AnnualDays;
+            Assert.AreEqual((double)expected, (double)amount, 0.0001, "6 天 = 8/26..8/31");
+        }
+
+        [TestMethod]
+        public void 边界四象限_剩余天数口径正确()
+        {
+            var p = CreatePosition(InterestTypeEnum.单利, SwapDirectionEnum.支付);
+            // 8/26..8/31 共 6 个计息日候选；IncludeStart 加 8/25、IncludeEnd 加 8/31 由约定裁剪
+            var cases = new (bool settled, bool calcLast, int days)[]
+            {
+                (true,  true,  6), // (8/25, 8/31] 8/26..8/31
+                (true,  false, 5), // (8/25, 8/31) 8/26..8/30
+                (false, true,  7), // [8/25, 8/31] 8/25..8/31
+                (false, false, 6), // [8/25, 8/31) 8/25..8/30
+            };
+            foreach (var (settled, calcLast, days) in cases)
+            {
+                var amount = SwapPenaltyInterestCalculator.CalcPenaltyAmount(
+                    p, Notional,
+                    unwindDate: UnwindDate, maturityDate: MaturityDate,
+                    unwindDaySettled: settled, maturityCalcLast: calcLast,
+                    capitalizedInterest: 0m, carryInInterest: 0m,
+                    frozenRate: FundingLegRate.Fixed(Rate),
+                    policy: Policy(p), resetAnchor: StartDate);
+                var expected = Rate * Notional * days / AnnualDays;
+                Assert.AreEqual((double)expected, (double)amount, 0.0001,
+                    $"settled={settled}, calcLast={calcLast} → {days} 天");
+            }
+        }
+
+        [TestMethod]
+        public void 部分平仓_仅被平份额计罚息()
+        {
+            var p = CreatePosition(InterestTypeEnum.复利, SwapDirectionEnum.支付);
+            var elapsed = CompoundAccruedTo(UnwindDate, AccrualBoundary.Both);
+            var capitalized = CompoundAccruedTo(LastResetBeforeUnwind.AddDays(-1), AccrualBoundary.Both);
+            var carryIn = elapsed - capitalized;
+
+            // 被平 30%：本金与两承接量同比缩放，罚息应恰为全额的 30%
+            var full = CalcCompoundPenalty(p, Notional, true, capitalized, carryIn);
+            var partial = CalcCompoundPenalty(p, Notional * 0.3m, true, capitalized * 0.3m, carryIn * 0.3m);
+
+            Assert.AreEqual((double)(full * 0.3m), (double)partial, 0.0001,
+                "被平 30%（本金与承接量同比）罚息应恰为全额的 30%");
+        }
+
+        [TestMethod]
+        public void 零剩余期限_金额为零()
+        {
+            var amount = SwapPenaltyInterestCalculator.CalcPenaltyAmount(
+                CreatePosition(InterestTypeEnum.复利, SwapDirectionEnum.支付), Notional,
+                unwindDate: MaturityDate, maturityDate: MaturityDate,
+                unwindDaySettled: true, maturityCalcLast: true,
+                capitalizedInterest: 90_000m, carryInInterest: 10_000m,
+                frozenRate: FundingLegRate.Fixed(Rate),
+                policy: Policy(CreatePosition(InterestTypeEnum.复利, SwapDirectionEnum.支付)),
+                resetAnchor: StartDate);
+            Assert.AreEqual(0m, amount, "平仓日=到期日无剩余期限，罚息为 0（承接量不产生利息）");
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/PrepaidPrincipalCloseTraceTest.cs

@@ -103,8 +103,8 @@ namespace YLErp.Modules.SwapModule
                 SwapCalcTrace.Reset();
                 var eod = new List<eod_swap_position> { MakeEod(valueDate, PrepayRemaining, 0m) };
                 var fe = _svc.GetInterests(td, td.trade_extend, FullDate, FullDate, eod,
-                    new List<swap_position> { pos }, PrepayFix, PrepayFix, PrepayFix, PrepayFix, 1m,
-                    (int)SwapEventTypeEnum.平仓, false, false, 0, PrepayFix, false,
+                    new List<swap_position> { pos }, PrepayFix, PrepayFix, 1m,
+                    (int)SwapEventTypeEnum.平仓, false, PrepayFix, false,
                     settment: false, newCalcLast: calcLast, closeList: null)[0];
                 var trace = SwapCalcTrace.Dump();
                 Console.WriteLine(trace);

UnitTestProject/Modules/SwapModule/PrepaidPrincipalClosingChainTraceTest.cs

@@ -101,9 +101,9 @@ namespace YLErp.Modules.SwapModule
             protected override List<swap_flow_event> CalcSwapInterests(
                 trade td, trade_extend tradeExtend, DateTime valueDate, DateTime unwindDate,
                 List<eod_swap_position> eodPositions, List<swap_position> positions,
-                decimal posiNotionalValue, decimal posiLongNotionalValue, decimal posiShortNotionalValue,
-                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose, bool needPrice,
-                decimal grossPrice, decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
+                decimal posiNotionalValue,
+                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose,
+                decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
                 List<swap_flow_event> closeList = null)
             {
                 return positions.Select(p => new swap_flow_event

UnitTestProject/Modules/SwapModule/RegDateDividendEodE2ETest.cs

@@ -0,0 +1,270 @@
+using YLErp;
+using YLErp.DBModels;
+using YLErp.DBModels.Enums;
+using YLErp.Modules.EodModule;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System.Linq;
+
+namespace YLErp.Modules.SwapModule
+{
+    /// <summary>
+    /// GLMS-20260105-0006 端到端补充：EOD 分红引擎的票息归属须按【债权登记日 reg_date】判定，
+    /// 而非支付日(pay_date)。此前 DividendEodNoDoubleCountTest.EodSvcStub 把 CalcBondPayment 覆写成
+    /// 线性公式(DailyRatePerUnit*days*qty)，**绕开了 reg_date 口径**——即没有真正验证"引擎按登记日计提"。
+    ///
+    /// 本文件把 EOD stub 的 CalcBondPayment seam 重新桥接回【真实的 BondPaymentService（reg_date 口径）】，
+    /// 仅用内存 BondPayment 数据（不连库），使端到端流程(CopyEodPosition/UpdateEodPosition + GetPreEodDividendSum)
+    /// 真正跑生产日期逻辑：
+    ///   ① EOD 引擎在登记日计提、支付日不计提（证明 reg_date 口径）；
+    ///   ② 登记日下一日(T+1)全平：经 GetPreEodDividendSum 读到登记日当日 EOD 分红（收盘在册→享有）；
+    ///   ③ 部分平仓 T+1：DividendIn 为全量(非按比例缩放)，剩余 PosiDividendSum 归 0（记录当前生产行为）。
+    /// </summary>
+    [TestClass]
+    public class RegDateDividendEodE2ETest
+    {
+        private const string BondCode = "230004.IB";
+        private const int TradeId = 7004;
+        private const long PositionId = 70041;
+        private const decimal Qty = 20_000_000m;
+        private const decimal PaymentPer100 = 0.1808m;
+        private const decimal ExpectedDividend = 36_160m; // 20,000,000 × 0.1808 / 100
+
+        private static readonly DateTime StartDate = new(2026, 4, 1);
+        private static readonly DateTime RegDate = new(2026, 4, 3);   // 债权登记日
+        private static readonly DateTime PayDate = new(2026, 4, 6);   // 实际支付日（与登记日差 3 天）
+
+        #region 内存债券付息数据（reg_date 口径）
+
+        private static List<BondPayment> BondPayments()
+            => new List<BondPayment>
+            {
+                new BondPayment
+                {
+                    underlyingCode = BondCode,
+                    reg_date = RegDate,        // 关键：分红归属按债权登记日判定
+                    payment_date_pl = PayDate, // 理论付息日（非归属口径）
+                    payment_date = PayDate,    // 实际付息日（非归属口径）
+                    payment_interest = PaymentPer100
+                }
+            };
+
+        #endregion
+
+        #region BondPaymentService seam（桥接真实 reg_date 口径，内存数据）
+
+        private sealed class RegDateBondPaymentService : BondPaymentService
+        {
+            private readonly List<BondPayment> _data;
+            public RegDateBondPaymentService(List<BondPayment> data, OptUserInfo userInfo) : base(userInfo) { _data = data; }
+            protected override IQueryable<BondPayment> QueryBondPayments(string underlyingCode)
+                => _data.Where(x => x.underlyingCode == underlyingCode).AsQueryable();
+        }
+
+        #endregion
+
+        #region EOD stub（CalcBondPayment 桥接真实 BondPaymentService）
+
+        private sealed class RegDateEodStub : TestableSwapEodPositionService
+        {
+            private readonly List<BondPayment> _bondPayments;
+            public RegDateEodStub(List<BondPayment> bondPayments) : base(nameof(RegDateDividendEodE2ETest)) { _bondPayments = bondPayments; }
+
+            protected override decimal CalcBondPayment(string underlyingCode, DateTime fromDate, DateTime toDate, decimal qty, int shortRatio, int directionRatio)
+            {
+                // 桥接真实生产口径：BondPaymentService.GetBondPayments 按 reg_date 过滤 + CalcPayment 累加
+                var svc = new RegDateBondPaymentService(_bondPayments, OptUserInfo.UnitTestUser);
+                return svc.CalcPayment(underlyingCode, fromDate, toDate, qty, shortRatio, directionRatio);
+            }
+
+            protected override underlying_manager GetUnderlyingData(string underlyingCode)
+                => new underlying_manager { ValueAddedTax = 0m };
+
+            protected override decimal GetUnderlyingPrice(string code, DateTime settleDate, out decimal vobp)
+            { vobp = 0m; return 1.00m; }
+
+            public eod_swap_position ExecuteCopyEodPosition(eod_swap_position eod, trade td, DateTime valueDate, DateTime preSettleDate)
+                => CopyEodPosition(eod, null, td, valueDate, preSettleDate);
+
+            public eod_swap_position ExecuteUpdateEodPosition(swap_position swapPosition, eod_swap_position eod, trade td, DateTime valueDate, DateTime preSettleDate, List<swap_flow_event> unwindEvents)
+                => UpdateEodPosition(swapPosition, eod, null, td, valueDate, preSettleDate, unwindEvents);
+        }
+
+        #endregion
+
+        #region Deal stub（GetPreEodDividendSum，注入 EOD 快照）
+
+        private sealed class DealSvcStub : SwapDealService
+        {
+            private readonly List<eod_swap> _eodSwaps;
+            private readonly List<eod_swap_position> _eodPositions;
+            public DealSvcStub(List<eod_swap> eodSwaps, List<eod_swap_position> eodPositions)
+                : base(OptUserInfo.UnitTestUser) { _eodSwaps = eodSwaps; _eodPositions = eodPositions; }
+            public decimal ExposeGetPreEodDividendSum(int tradeId, long positionId, DateTime dealDate)
+                => GetPreEodDividendSum(tradeId, positionId, dealDate);
+            protected override IQueryable<eod_swap> QueryPreEodSwaps(int tradeId)
+                => _eodSwaps.Where(x => x.SwapTradeId == tradeId).AsQueryable();
+            protected override eod_swap_position QueryPreEodPosition(int tradeId, long positionId, DateTime valueDate)
+                => _eodPositions.FirstOrDefault(x => x.SwapTradeId == tradeId && x.PositionId == positionId && x.ValueDate == valueDate);
+        }
+
+        #endregion
+
+        #region 数据构建
+
+        private static trade CreateTrade() => new trade
+        {
+            id = TradeId, TradeNumber = "UT-REGDATE-E2E-001", ClientId = 999999,
+            TradeType = "收益互换", TradeDate = StartDate, StartDate = StartDate,
+            ExerciseDate = new DateTime(2027, 4, 1), TradeStatus = "确认成交", ValidState = "Valid",
+            StructureType = "单标的", QuoteCurrency = "CNY", SettlementCurrency = "CNY",
+            OriginalStockEqvNotional = (double)(Qty * 1.00m)
+        };
+
+        private static swap_position CreatePosition() => new swap_position
+        {
+            id = PositionId, SwapTradeId = TradeId,
+            PosiDirection = (int)SwapDirectionEnum.收取, PositionType = (int)PositionTypeFlag.Long,
+            UnderlyingCode = BondCode, ContractSize = 1m,
+            PosiQuantity = Qty, PosiNotionalValue = Qty,
+            PosiNetPrice = 1.000m, PosiGrossPrice = 1.000m,
+            PosiNetFeePrice = 1.000m, PosiNetNoFeePrice = 1.000m,
+            IsInitial = true, Invalid = false,
+            PosiTradingFee = 0, PosiTradingFeePending = 0
+        };
+
+        private static eod_swap_position CreateInitialEod() => new eod_swap_position
+        {
+            id = 1, SwapTradeId = TradeId, PositionId = PositionId,
+            ValueDate = StartDate, PosiQuantity = Qty,
+            PosiDirection = (int)SwapDirectionEnum.收取, PositionType = (int)PositionTypeFlag.Long,
+            UnderlyingCode = BondCode, ContractSize = 1m,
+            PosiNetPrice = 1.000m, PosiGrossPrice = 1.000m,
+            PosiNetFeePrice = 1.000m, PosiNetNoFeePrice = 1.000m,
+            PosiDividendSum = 0m, TdPosiDividend = 0m, TdCloseDividend = 0m,
+            RealizedDividend = 0m, PosiFeePending = 0m,
+            InterestProfitSum = 0m, Invalid = false
+        };
+
+        private static swap_flow_event CloseEvent(decimal qty, decimal dividendIn, DateTime eventDate) => new swap_flow_event
+        {
+            SwapTradeId = TradeId, EventType = (int)SwapFlowEventTypeEnum.平仓,
+            PositionId = PositionId, Quantity = qty, DividendIn = dividendIn,
+            MarkClosePnl = 0m, CloseFee = 0m, TradingFeePending = 0m,
+            TradingAmount = qty * 1.000m,
+            UnwindDate = eventDate, EventDate = eventDate, PayDate = eventDate,
+            DataState = (int)SwapFlowDateStateEnum.完成
+        };
+
+        private static void AssertDecimalEqual(decimal expected, decimal actual, decimal tol, string msg)
+            => Assert.IsTrue(System.Math.Abs(expected - actual) <= tol, $"{msg}: expected={expected} actual={actual}");
+
+        #endregion
+
+        /// <summary>
+        /// 端到端证 reg_date 口径：EOD 引擎(CopyEodPosition)逐日计提时，
+        /// 仅在【债权登记日】产生分红，【支付日】不产生（即便支付日与登记日相差数日）。
+        /// 这是线性 stub 无法覆盖的——线性公式按"天数"算，永远无法区分登记日 vs 支付日。
+        /// </summary>
+        [TestMethod]
+        public void 登记日口径_EOD引擎按reg_date计提_非pay_date()
+        {
+            var eodSvc = new RegDateEodStub(BondPayments());
+            var td = CreateTrade();
+            var initialEod = CreateInitialEod();
+
+            // D1=4/2（登记日前一日）：窗口 (4/1,4/2] 无登记日 → 0
+            var r1 = eodSvc.ExecuteCopyEodPosition(initialEod, td, new DateTime(2026, 4, 2), StartDate);
+            AssertDecimalEqual(0m, r1.TdPosiDividend, 0.01m, "4/2 当日新计(无登记日)");
+            AssertDecimalEqual(0m, r1.PosiDividendSum, 0.01m, "4/2 累计(无登记日)");
+
+            // D2=4/3（登记日）：窗口 (4/2,4/3] 命中 reg_date=4/3 → 36160
+            var r2 = eodSvc.ExecuteCopyEodPosition(r1, td, RegDate, StartDate);
+            AssertDecimalEqual(ExpectedDividend, r2.TdPosiDividend, 0.01m,
+                "4/3 登记日当日应计提 36160（按 reg_date 口径）；若按支付日(pay_date=4/6)则此处为 0（漏计）。");
+            AssertDecimalEqual(ExpectedDividend, r2.PosiDividendSum, 0.01m, "4/3 累计=36160");
+
+            // D3=4/6（支付日，非登记日）：窗口 (4/3,4/6] 不含任何 reg_date（4/3 不>4/3；4/6 是支付日非登记日）→ 0
+            var r3 = eodSvc.ExecuteCopyEodPosition(r2, td, PayDate, StartDate);
+            AssertDecimalEqual(0m, r3.TdPosiDividend, 0.01m,
+                "4/6 支付日不应计提（分红归属按 reg_date，不是 pay_date）；线性 stub 因按天数算会在此误计。");
+            AssertDecimalEqual(ExpectedDividend, r3.PosiDividendSum, 0.01m, "4/6 累计仍为 36160（支付日不重复计提）");
+
+            Console.WriteLine($"[reg_date 口径] 4/2={r1.PosiDividendSum}, 4/3={r2.PosiDividendSum}(登记日计提), 4/6={r3.PosiDividendSum}(支付日不计提)");
+        }
+
+        /// <summary>
+        /// 用户场景「登记日下一日(T+1)全平」：T日(登记日)收盘在册→享有T日分红；
+        /// T+1盘中全平，GetPreEodDividendSum(T+1) 应读到 T日 EOD（含当日分红）= 36160，而非漏读为 0。
+        /// 验证端到端：EOD 引擎算出 T日分红 → 快照 → 手动/互换读取正确取到。
+        /// </summary>
+        [TestMethod]
+        public void 登记日下一日全平_经GetPreEodDividendSum读到登记日分红()
+        {
+            var eodSvc = new RegDateEodStub(BondPayments());
+            var td = CreateTrade();
+            var position = CreatePosition();
+            var initialEod = CreateInitialEod();
+
+            // T日=4/3（登记日）EOD：引擎算出分红 36160（reg_date 口径）
+            var rReg = eodSvc.ExecuteCopyEodPosition(initialEod, td, RegDate, StartDate);
+            AssertDecimalEqual(ExpectedDividend, rReg.PosiDividendSum, 0.01m, "登记日 T日 EOD 累计分红=36160");
+
+            // T+1=4/4 盘中：注入 T日 EOD 快照，GetPreEodDividendSum 应读 T日(<=当日) → 36160
+            var dealSvc = new DealSvcStub(
+                new List<eod_swap> { new eod_swap { SwapTradeId = TradeId, ValueDate = RegDate } },
+                new List<eod_swap_position> { rReg });
+            decimal dividendIn = dealSvc.ExposeGetPreEodDividendSum(TradeId, PositionId, new DateTime(2026, 4, 4));
+            AssertDecimalEqual(ExpectedDividend, dividendIn, 0.01m,
+                "T+1(4/4) 盘中全平应经 GetPreEodDividendSum 读到 T日(4/3)EOD 分红 36160（收盘在册→享有）；" +
+                "若 < 严格小于 dealDate 读 T-1(4/2=0) 则漏读登记日当日。");
+            Console.WriteLine($"[T+1 全平] DividendIn(读T日EOD)={dividendIn}");
+
+            // T+1=4/4 EOD 全平：PosiQuantity=0 → 不计提当日 + PosiDividendSum 归 0
+            var rT1 = eodSvc.ExecuteUpdateEodPosition(position, rReg, td, new DateTime(2026, 4, 4), RegDate,
+                new List<swap_flow_event> { CloseEvent(Qty, dividendIn, new DateTime(2026, 4, 4)) });
+
+            // 实拿 = DividendIn(本次落袋) + 末尾 PosiDividendSum(剩余挂账) = 应得(T日前待实现=持有至登记日)
+            decimal actualGot = dividendIn + rT1.PosiDividendSum;
+            AssertDecimalEqual(ExpectedDividend, actualGot, 0.01m, "实拿=应得(持有至登记日享有的 36160)");
+            AssertDecimalEqual(0m, rT1.TdPosiDividend, 0.01m, "T+1 非登记日，EOD 不计提当日");
+            AssertDecimalEqual(0m, rT1.PosiDividendSum, 0.01m, "全平后 PosiDividendSum=0");
+            Console.WriteLine($"[T+1 全平] 应得={ExpectedDividend}, 实拿={actualGot}, 末尾PosiDividendSum={rT1.PosiDividendSum}");
+        }
+
+        /// <summary>
+        /// 部分平仓 T+1：当前生产行为记录（非修复目标）。
+        /// T日(登记日)持有→T+1盘中部分平仓：GetPreEodDividendSum 返回的是【全量】待实现分红(非按平仓比例缩放)，
+        /// 故 DividendIn=全量 36160；T+1 EOD 部分平仓(PosiQuantity>0)后剩余 PosiDividendSum=前日-全量=0。
+        /// 注：此"DividendIn 不按平仓比例缩放"是当前生产行为，已与用户确认（潜在一致性议题，非本 bug 修复范围）。
+        /// </summary>
+        [TestMethod]
+        public void 部分平仓_T1_DividendIn为全量_剩余PosiDividendSum归0()
+        {
+            var eodSvc = new RegDateEodStub(BondPayments());
+            var td = CreateTrade();
+            var position = CreatePosition();
+            var initialEod = CreateInitialEod();
+
+            // T日=4/3（登记日）EOD：累计 36160
+            var rReg = eodSvc.ExecuteCopyEodPosition(initialEod, td, RegDate, StartDate);
+            AssertDecimalEqual(ExpectedDividend, rReg.PosiDividendSum, 0.01m, "登记日 T日 EOD 累计=36160");
+
+            // T+1=4/4 盘中部分平仓(50%)：GetPreEodDividendSum 返回【全量】36160（不按比例缩放）
+            var dealSvc = new DealSvcStub(
+                new List<eod_swap> { new eod_swap { SwapTradeId = TradeId, ValueDate = RegDate } },
+                new List<eod_swap_position> { rReg });
+            decimal dividendIn = dealSvc.ExposeGetPreEodDividendSum(TradeId, PositionId, new DateTime(2026, 4, 4));
+            AssertDecimalEqual(ExpectedDividend, dividendIn, 0.01m, "部分平仓 T+1：DividendIn 仍为全量 36160（非按 50% 缩放）");
+
+            // T+1=4/4 EOD 部分平仓(Quantity=Qty/2)：PosiQuantity>0；TdPosiDividend=0(非登记日)，
+            // PosiDividendSum = 前日36160 + 0 - TdCloseDividend(全量36160) = 0
+            var rT1 = eodSvc.ExecuteUpdateEodPosition(position, rReg, td, new DateTime(2026, 4, 4), RegDate,
+                new List<swap_flow_event> { CloseEvent(Qty / 2, dividendIn, new DateTime(2026, 4, 4)) });
+
+            AssertDecimalEqual(ExpectedDividend, rT1.TdCloseDividend, 0.01m, "TdCloseDividend=全量 DividendIn(36160)");
+            AssertDecimalEqual(0m, rT1.PosiDividendSum, 0.01m,
+                "部分平仓后剩余 PosiDividendSum=前日36160 - 全量实现36160 = 0（当前生产行为：DividendIn 不按比例缩放）");
+            Console.WriteLine($"[部分平仓 T+1] DividendIn={dividendIn}(全量), 剩余PosiDividendSum={rT1.PosiDividendSum}");
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/SwapCloseConversationCasesRegressionTest.cs

@@ -80,9 +80,9 @@ namespace YLErp.Modules.SwapModule
             var result = service.GetInterests(
                 trade, trade.trade_extend, closeCase.CloseDate, closeCase.CloseDate,
                 new List<eod_swap_position> { previousEod }, new List<swap_position> { position },
-                closeCase.RemainingNotional, closeCase.RemainingNotional, 0m,
+                closeCase.RemainingNotional,
                 closeCase.RemainingNotional, 1m, (int)SwapEventTypeEnum.平仓,
-                false, false, 0m,
+                false,
                 closeCase.InterestType == 0 ? closeCase.RemainingNotional : closeCase.OriginalNotional,
                 add: false, settment: false, newCalcLast: false).Single();
 

UnitTestProject/Modules/SwapModule/SwapEodPositionServiceIntegrationTest.cs

@@ -1,3 +1,4 @@
+using System.Linq;
 using System.Reflection;
 using YLErp.DBModels.Enums;
 
@@ -272,7 +273,16 @@ namespace YLErp.Modules.SwapModule
                     Console.WriteLine($"  ✓ {scenario.Scenario}");
                 }
                 
-                Assert.AreEqual(13, parameters.Length, "DealInterests应有13个参数");
+                // 校验参数集合（按名称，对参数增删/重排/改名均敏感，比裸数字更稳）
+                var expectedParamNames = new[]
+                {
+                    "interestList", "eodPositions", "todyEodPositions", "settleDate",
+                    "td", "flowEvents", "autoInterests", "lastEodSwap",
+                    "posiTotalNotional", "closeNational", "grossPrice", "orginPv"
+                };
+                var actualParamNames = parameters.Select(p => p.Name).ToArray();
+                CollectionAssert.AreEquivalent(expectedParamNames, actualParamNames,
+                    "DealInterests 参数集合应与预期一致（新增/重排/改名参数时请同步更新此列表）");
                 Console.WriteLine("✅ 分支覆盖分析完成");
             }
         }

UnitTestProject/Modules/SwapModule/SwapFlowFr007EntryPrecisionTest.cs

@@ -0,0 +1,30 @@
+namespace YLErp.Modules.SwapModule
+{
+    /// <summary>
+    /// FR007 界面手工录入落库精度契约（EQD-6968 测试期间发现）：
+    /// FR007 官方发布为百分数下 4 位（1.4150%），前端 ÷100 转 6 位小数（0.014150）传后端；
+    /// 原 Math.Round(,4) 截成 0.0142（丢 0.5bp，1 亿本金 7 天约 96 元）。修复后保留 6 位。
+    /// bond-sync 自动同步链（BigDecimal 全精度）不经此路径，无影响。
+    /// </summary>
+    [TestClass]
+    public class SwapFlowFr007EntryPrecisionTest
+    {
+        [TestMethod]
+        public void 官方四位百分数定盘_六位小数全精度保留()
+        {
+            // 2026-08-19 官方发布 1.4150% —— 前端 1.4150/100 后的入参
+            Assert.AreEqual(0.01415, SwapFlowService.RoundFr007Price(1.4150 / 100.0), 1e-9,
+                "1.4150% 落库应保留 0.014150，不得截成 0.0142（丢 0.5bp）");
+            Assert.AreEqual(0.021137, SwapFlowService.RoundFr007Price(2.1137 / 100.0), 1e-9,
+                "百分数下第3、4位（小数第5、6位）必须保留");
+        }
+
+        [TestMethod]
+        public void 常规两位百分数定盘_行为不变()
+        {
+            // 历史常见形态（2.11% 等）：修复前后结果一致
+            Assert.AreEqual(0.0211, SwapFlowService.RoundFr007Price(0.0211), 0d);
+            Assert.AreEqual(0.0142, SwapFlowService.RoundFr007Price(0.0142), 0d);
+        }
+    }
+}

UnitTestProject/Modules/SwapModule/SwapInterestScenario1And2Test.cs

@@ -56,17 +56,17 @@ namespace UnitTestProject.Modules.SwapModule
             protected override List<swap_flow_event> CalcSwapInterests(
                 trade td, trade_extend tradeExtend, DateTime valueDate, DateTime unwindDate,
                 List<eod_swap_position> eodPositions, List<swap_position> positions,
-                decimal posiNotionalValue, decimal posiLongNotionalValue, decimal posiShortNotionalValue,
-                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose, bool needPrice,
-                decimal grossPrice, decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
+                decimal posiNotionalValue,
+                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose,
+                decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
                 List<swap_flow_event> closeList = null)
             {
                 var svc = new StubSwapDealService(
                     new OptUserInfo(0, nameof(SwapInterestScenario1And2Test), OptUserFrom.UnitTest), _floatRates);
                 return svc.GetInterests(td, tradeExtend, valueDate, unwindDate,
-                    eodPositions, positions, posiNotionalValue, posiLongNotionalValue, posiShortNotionalValue,
-                    closePosiNotionalValue, closePrecent, eventType, tdClose, needPrice,
-                    grossPrice, orginPv, add, settment, newCalcLast, closeList);
+                    eodPositions, positions, posiNotionalValue,
+                    closePosiNotionalValue, closePrecent, eventType, tdClose,
+                    orginPv, add, settment, newCalcLast, closeList);
             }
 
             public eod_swap_position ExecuteClose(trade td, swap_position position, DateTime valueDate,
@@ -74,7 +74,7 @@ namespace UnitTestProject.Modules.SwapModule
                 List<swap_flow_event> flowEvents, decimal closeNotional, eod_swap_position prevEod)
             {
                 SaveAutoEodWithCloseInterestPosition(prevEod, null, position, td, valueDate, null,
-                    posiLongNotional, posiShortNotional, flowEvents, closeNotional, false, 1m,
+                    posiLongNotional + posiShortNotional, flowEvents, closeNotional, false, 1m,
                     posiLongNotional + posiShortNotional);
                 return PersistedPositions.LastOrDefault();
             }
@@ -211,9 +211,9 @@ namespace UnitTestProject.Modules.SwapModule
             var interests = svc.GetInterests(
                 td, td.trade_extend, valueDate, valueDate,
                 prevEod, new List<swap_position> { position },
-                closeNotional, closeNotional, 0m, closeNotional, 1m,
+                closeNotional, closeNotional, 1m,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0m, closeNotional, false, settment: false, newCalcLast: isMaturity);
+                false, closeNotional, false, settment: false, newCalcLast: isMaturity);
             Assert.AreEqual(1, interests.Count);
             return interests[0];
         }

UnitTestProject/Modules/SwapModule/SwapInterestScenario3And4FloatingTest.cs

@@ -1,12 +1,9 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Newtonsoft.Json;
+using System.Globalization;
 using YLErp;
-using YLErp.DBModels;
 using YLErp.DBModels.Enums;
 using YLErp.Modules.SwapModule;
+using YLErp.Modules.SwapModule.ReturnLegs;
 
 namespace UnitTestProject.Modules.SwapModule
 {
@@ -178,17 +175,17 @@ namespace UnitTestProject.Modules.SwapModule
             protected override List<swap_flow_event> CalcSwapInterests(
                 trade td, trade_extend tradeExtend, DateTime valueDate, DateTime unwindDate,
                 List<eod_swap_position> eodPositions, List<swap_position> positions,
-                decimal posiNotionalValue, decimal posiLongNotionalValue, decimal posiShortNotionalValue,
-                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose, bool needPrice,
-                decimal grossPrice, decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
+                decimal posiNotionalValue,
+                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose,
+                decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
                 List<swap_flow_event> closeList = null)
             {
                 var svc = new RealSwapDealService(
                     new OptUserInfo(0, nameof(SwapInterestScenario3And4FloatingTest), OptUserFrom.UnitTest), _floatRates, FlowEvents);
                 var interests = svc.GetInterests(td, tradeExtend, valueDate, unwindDate,
-                    eodPositions, positions, posiNotionalValue, posiLongNotionalValue, posiShortNotionalValue,
-                    closePosiNotionalValue, closePrecent, eventType, tdClose, needPrice,
-                    grossPrice, orginPv, add, settment, newCalcLast, closeList);
+                    eodPositions, positions, posiNotionalValue,
+                    closePosiNotionalValue, closePrecent, eventType, tdClose,
+                    orginPv, add, settment, newCalcLast, closeList);
                 // 捕获 base InterestPrincipal（= EOD:1406 行赋给 TdInterestPrincipal 的值，反推前），供 TdInterestPrincipal 断言镜像分叉。
                 LastBaseInterestPrincipal = interests.Count > 0 ? interests[0].InterestPrincipal : 0m;
                 return interests;
@@ -226,7 +223,7 @@ namespace UnitTestProject.Modules.SwapModule
                 List<swap_flow_event> flowEvents, decimal closeNotional, eod_swap_position prevEod)
             {
                 SaveAutoEodWithCloseInterestPosition(prevEod, null, position, _td, valueDate, null,
-                    posiLongNotional, posiShortNotional, flowEvents, closeNotional, false, 1m,
+                    posiLongNotional + posiShortNotional, flowEvents, closeNotional, false, 1m,
                     posiLongNotional + posiShortNotional);
                 return PersistedPositions.LastOrDefault();
             }
@@ -252,7 +249,7 @@ namespace UnitTestProject.Modules.SwapModule
         private static void DebugCompare(string tag, decimal oracle, decimal actual, eod_swap_position eod = null)
         {
             var diff = actual - oracle;
-            var sb = new System.Text.StringBuilder();
+            var sb = new StringBuilder();
             sb.AppendLine($"[DBG][{tag}] oracle={oracle:F4} actual={actual:F4} diff={diff:F4}");
             if (eod != null)
             {
@@ -394,9 +391,9 @@ namespace UnitTestProject.Modules.SwapModule
             var interests = svc.GetInterests(
                 td, td.trade_extend, valueDate, valueDate,
                 prevEod, new List<swap_position> { position },
-                closeNotional, closeNotional, 0m, closeNotional, 1m,
+                closeNotional, closeNotional, 1m,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0m, closeNotional, false, settment: false, newCalcLast: isMaturity);
+                false, closeNotional, false, settment: false, newCalcLast: isMaturity);
             Assert.AreEqual(1, interests.Count);
             return interests[0];
         }
@@ -421,8 +418,8 @@ namespace UnitTestProject.Modules.SwapModule
         public void 场景3_第3重置期内全平(string note, bool compound, bool calcFirst, bool calcLast,
             int rule, int interestMode, string spreadStr, string oracleStr)
         {
-            var spread = decimal.Parse(spreadStr, System.Globalization.CultureInfo.InvariantCulture);
-            var oracle = decimal.Parse(oracleStr, System.Globalization.CultureInfo.InvariantCulture);
+            var spread = decimal.Parse(spreadStr, CultureInfo.InvariantCulture);
+            var oracle = decimal.Parse(oracleStr, CultureInfo.InvariantCulture);
             var mode = (calcFirst && calcLast) ? "11" : "10";
             var type = compound ? InterestTypeEnum.复利 : InterestTypeEnum.单利;
 
@@ -468,9 +465,9 @@ namespace UnitTestProject.Modules.SwapModule
         public void 场景4_部分平仓后再全平(string note, bool compound, bool calcFirst, bool calcLast,
             int rule, int interestMode, string spreadStr, string oraclePartialStr, string oracleFinalStr)
         {
-            var spread = decimal.Parse(spreadStr, System.Globalization.CultureInfo.InvariantCulture);
-            var oraclePartial = decimal.Parse(oraclePartialStr, System.Globalization.CultureInfo.InvariantCulture);
-            var oracleFinal = decimal.Parse(oracleFinalStr, System.Globalization.CultureInfo.InvariantCulture);
+            var spread = decimal.Parse(spreadStr, CultureInfo.InvariantCulture);
+            var oraclePartial = decimal.Parse(oraclePartialStr, CultureInfo.InvariantCulture);
+            var oracleFinal = decimal.Parse(oracleFinalStr, CultureInfo.InvariantCulture);
             var mode = (calcFirst && calcLast) ? "11" : "10";
             var type = compound ? InterestTypeEnum.复利 : InterestTypeEnum.单利;
 
@@ -492,25 +489,61 @@ namespace UnitTestProject.Modules.SwapModule
             _eod.RecordEod(partialEod);
             DebugCompare("场景4[部分] " + note, oraclePartial, partialEod.TdCloseInterest, partialEod);
             AssertStrict(oraclePartial, partialEod.TdCloseInterest, "场景4[部分] " + note);
-            // 覆盖 mode 2/9 分叉（SwapEodPositionService:1436-1469）：部分平仓后 TdInterestPrincipal 的经济口径
-            // 必须 = 剩余动态本金（剩余名义本金 + 已并入本金的重置日待实现利息），mode2/9 应当一致。
-            //   单利：line 1491 直接取 posiNotionalValue = remainingNotional，无累计利息。
-            //   复利：base = interests.First().InterestPrincipal（本服务 CalcSwapInterests 已捕获到 LastBaseInterestPrincipal）；
-            //         mode2 仅在 calcLast 时于 1464 行反推剩余(× (1-cp)/cp)，mode9 直取 base（GLMS-20260421-0004 禁止反推）。
-            //         calcLast=false（如“算头不算尾”）或 mode9 被错误反推会膨胀 ~2.3 倍（494982903.27），下方断言精确拦截回归。
+            // TdInterestPrincipal 独立经济不变量断言（取代原 reverseMode2 镜像布尔）。
+            // 生产线路（SwapEodPositionService ~:1400-1453）：
+            //   单利：直接 TdInterestPrincipal = posiNotionalValue = remainingNotional（无累计利息）。
+            //   复利：base = 计息器 CalcSwapInterests 返回的 InterestPrincipal，已由本桩捕获为 LastBaseInterestPrincipal。
+            //         - mode9（标的期初全价）：计息器已直接返回「剩余动态本金」，禁止任何 (1-cp)/cp 反推
+            //           （GLMS-20260421-0004：误反推会把 ~212135529.97 膨胀到 ~494982903.27）。
+            //         - mode2（合约名义本金规模）仅 calcLast 时 InterestPrincipal 为已平部分，需反推剩余
+            //           = base*(1-cp)/cp（经济恒等式 remaining = closed/cp − closed，非代码镜像）。
+            //   下方用独立 if 锁死 mode9=base，不依赖 reverseMode2 布尔的拼写——
+            //   重基线时即便把 reverseMode2 错写成含 mode9，mode9 仍走 base 分支，断言照红。
             decimal expectedTdPrincipal;
             if (!compound)
             {
                 expectedTdPrincipal = remainingNotional;
             }
+            else if (interestMode == (int)InterestModeEnum.标的期初全价)
+            {
+                // mode9 回归守卫（GLMS-20260421-0004）：TdInterestPrincipal 必须等于反推前的 base；
+                // 任何 (1-cp)/cp 反推都会把 ~212M 剩余本金膨胀到 ~495M，此断言立即红。
+                expectedTdPrincipal = _eod.LastBaseInterestPrincipal;
+            }
             else
             {
+                // mode2（合约名义本金规模）：仅 calcLast 时 InterestPrincipal 为已平部分，需反推剩余
+                // = base*(1-cp)/cp（经济恒等式 remaining = closed/cp − closed，非代码镜像）。
+                // !calcLast 时生产走 usesFullPreviousEodPrincipal 分支（*= (1-cp)），本测因部分平仓前一日 eod
+                // 差 3 天使 Days==1 不成立而跳过，故此处取 base。
                 var cp = partialCloseNotional / Notional; // = 0.3，与 EOD 内部 closePercent 一致
                 bool reverseMode2 = interestMode == (int)InterestModeEnum.合约名义本金规模 && calcLast;
                 expectedTdPrincipal = reverseMode2
                     ? _eod.LastBaseInterestPrincipal * (1m - cp) / cp
                     : _eod.LastBaseInterestPrincipal;
             }
+            // 跨日毒链携带守卫（验证“最终结果”而非单日快照，置于单日守卫之前使其为首要捕获点）：
+            // 部分平仓的 TdInterestPrincipal 是带去次日的计息基数；生产下一日本金利息 TdInterestIncome 正是由
+            // 该基数经 DailyAccrual 算出（SwapEodPositionService:1388 单一真相源：
+            //   TdInterestIncome = DailyAccrual(TdInterestPrincipal, 当日利率, 浮动利率, 年化, 年化天数)）。
+            // 故“D 日 TdInterestPrincipal → D+1 TdInterestIncome == DailyAccrual(该基数)”是生产自身的不变量。
+            // 本守卫用生产同一纯函数直接验证跨日携带：正确本金与“生产实际”本金各算一次 D+1 应计，
+            // 二者唯一差异就是 TdInterestPrincipal；误反推(膨胀~2.3x)会让 D+1 应计同步膨胀，差远超容差→红。
+            // （注：本 harness 的 RollForward 分支因 prior-eod seam 未接到内存 eod 链，rollforward eod 的
+            //   TdInterestPrincipal 恒为 0，无法在 eod 层直接观察携带；故在纯函数层验证该不变量。）
+            var annualDays = td.trade_extend == null ? 365 : td.trade_extend.ExtendObj.AnnualDays;
+            var correctNextDayIncome = InterestIncomeCalc.DailyAccrual(
+                expectedTdPrincipal, partialEod.TdInterestRate, partialEod.FloatRate, partialEod.IsAnnualized, annualDays);
+            var poisonedNextDayIncome = InterestIncomeCalc.DailyAccrual(
+                partialEod.TdInterestPrincipal, partialEod.TdInterestRate, partialEod.FloatRate, partialEod.IsAnnualized, annualDays);
+            var carryTol = Math.Max(0.01m, Math.Abs(correctNextDayIncome) * 0.05m);
+            Assert.IsTrue(Math.Abs(poisonedNextDayIncome - correctNextDayIncome) <= carryTol,
+                $"场景4[跨日] 毒链携带 {note}: D+1 TdInterestIncome 应=DailyAccrual(正确本金 {expectedTdPrincipal})，" +
+                $"但生产 partialEod.TdInterestPrincipal={partialEod.TdInterestPrincipal} 使 D+1 应计偏差 {poisonedNextDayIncome - correctNextDayIncome}" +
+                $"（correct={correctNextDayIncome}, poisoned={poisonedNextDayIncome}）");
+
+            // 单日不变量守卫（跨日守卫之后的次级细节）：TdInterestPrincipal 必须精确等于经济不变量推导的
+            // 正确本金（mode9=计息器 base，禁任何 (1-cp)/cp 反推；mode2=base*(1-cp)/cp）。
             AssertStrict(expectedTdPrincipal, partialEod.TdInterestPrincipal, "场景4[部分] TdInterestPrincipal " + note);
 
             // 部分平仓后，剩余名义本金缩减为 70%（真实代码路径更新持仓口径）
@@ -521,6 +554,7 @@ namespace UnitTestProject.Modules.SwapModule
             RunDailyEodFromStart(_eod, new DateTime(2026, 5, 12), new DateTime(2026, 5, 19));
             var prevEodFull = _eod.LatestEodForPosition(position.id, new DateTime(2026, 5, 19));
 
+
             // 第二步：2026-05-19 全部平仓剩余 70%（consumedInterest 此时从真实累积的 flow event 读取，
             // 真实扣除 5/11 部分平仓已结利息——绝无硬编码 0）
             var fullFlow = CalcCloseFlow(td, position, new DateTime(2026, 5, 19), new List<eod_swap_position>(), remainingNotional, remainingNotional);

UnitTestProject/Modules/SwapModule/SwapPositionComposeScenarioTest.cs

@@ -80,16 +80,16 @@ namespace YLErp.Modules.SwapModule
             protected override List<swap_flow_event> CalcSwapInterests(
                 trade td, trade_extend tradeExtend, DateTime valueDate, DateTime unwindDate,
                 List<eod_swap_position> eodPositions, List<swap_position> positions,
-                decimal posiNotionalValue, decimal posiLongNotionalValue, decimal posiShortNotionalValue,
-                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose, bool needPrice,
-                decimal grossPrice, decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
+                decimal posiNotionalValue,
+                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose,
+                decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
                 List<swap_flow_event> closeList = null)
             {
                 LastInterestCalculationPositions = positions;
                 return base.CalcSwapInterests(td, tradeExtend, valueDate, unwindDate,
-                    eodPositions, positions, posiNotionalValue, posiLongNotionalValue, posiShortNotionalValue,
-                    closePosiNotionalValue, closePrecent, eventType, tdClose, needPrice,
-                    grossPrice, orginPv, add, settment, newCalcLast, closeList);
+                    eodPositions, positions, posiNotionalValue,
+                    closePosiNotionalValue, closePrecent, eventType, tdClose,
+                    orginPv, add, settment, newCalcLast, closeList);
             }
 
             public void ExecuteSwapPositionCompose(DateTime settleDate, DateTime preSettleDate)

UnitTestProject/Modules/SwapModule/SwapSingleTradeVerificationTest.cs

@@ -59,17 +59,17 @@ namespace UnitTestProject.Modules.SwapModule
             protected override List<swap_flow_event> CalcSwapInterests(
                 trade td, trade_extend tradeExtend, DateTime valueDate, DateTime unwindDate,
                 List<eod_swap_position> eodPositions, List<swap_position> positions,
-                decimal posiNotionalValue, decimal posiLongNotionalValue, decimal posiShortNotionalValue,
-                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose, bool needPrice,
-                decimal grossPrice, decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
+                decimal posiNotionalValue,
+                decimal closePosiNotionalValue, decimal closePrecent, int eventType, bool tdClose,
+                decimal orginPv, bool add = false, bool settment = true, bool newCalcLast = false,
                 List<swap_flow_event> closeList = null)
             {
                 var svc = new StubSwapDealService(
                     new OptUserInfo(0, nameof(SwapSingleTradeVerificationTest), OptUserFrom.UnitTest), _floatRates);
                 return svc.GetInterests(td, tradeExtend, valueDate, unwindDate,
-                    eodPositions, positions, posiNotionalValue, posiLongNotionalValue, posiShortNotionalValue,
-                    closePosiNotionalValue, closePrecent, eventType, tdClose, needPrice,
-                    grossPrice, orginPv, add, settment, newCalcLast, closeList);
+                    eodPositions, positions, posiNotionalValue,
+                    closePosiNotionalValue, closePrecent, eventType, tdClose,
+                    orginPv, add, settment, newCalcLast, closeList);
             }
 
             public eod_swap_position ExecuteClose(trade td, swap_position position, DateTime valueDate,
@@ -77,7 +77,7 @@ namespace UnitTestProject.Modules.SwapModule
                 List<swap_flow_event> flowEvents, decimal closeNotional, eod_swap_position prevEod)
             {
                 SaveAutoEodWithCloseInterestPosition(prevEod, null, position, td, valueDate, null,
-                    posiLongNotional, posiShortNotional, flowEvents, closeNotional, false, 1m,
+                    posiLongNotional + posiShortNotional, flowEvents, closeNotional, false, 1m,
                     posiLongNotional + posiShortNotional);
                 return PersistedPositions.LastOrDefault();
             }
@@ -213,9 +213,9 @@ namespace UnitTestProject.Modules.SwapModule
             var interests = svc.GetInterests(
                 td, td.trade_extend, valueDate, valueDate,
                 prevEod, new List<swap_position> { position },
-                closeNotional, closeNotional, 0m, closeNotional, 1m,
+                closeNotional, closeNotional, 1m,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0m, closeNotional, false, settment: false, newCalcLast: isMaturity);
+                false, closeNotional, false, settment: false, newCalcLast: isMaturity);
             Assert.AreEqual(1, interests.Count);
             return interests[0];
         }

UnitTestProject/Modules/SwapModule/SwapUnwindFloatingLegDiagnosticTdd.cs

@@ -5,12 +5,12 @@ using YLErp.DBModels.Enums;
 namespace YLErp.Modules.SwapModule
 {
     /// <summary>
-    /// 诊断测试：验证「浮动腿 fpositions 仍用 origPositions(orig 100M)」对本 deal 的
-    /// 预付金/返回预付金结果是否产生影响。结论预期：本 deal 利息腿只有 mode 9(标的期初全价)
-    /// 与 mode 5(初始预付金)，CalcNotionalByMode 中 posiLong/posiShort 仅在「多头/空头存续名义本金」
-    /// 分支被消费(L709-716)，故本 deal 即便 fpositions 用 orig 100M，预付金腿结果也不受其影响。
-    /// 本测试仅做诊断/验证，不改动任何生产代码；用反射调用 private CalcNotionalByMode 以直接证明
-    /// “mode 9 / mode 5 的 closePrincipal 不依赖 posiLong/posiShort”。
+    /// 诊断测试骨架：针对 GLMS 双轨持仓(orig/real)构造预付金腿(mode 5)与标的期初全价腿(mode 9)，
+    /// 用于验证“浮动腿 fpositions 用 origPositions 对预付金/标的端计息基数的影响”。
+    /// 计息基数现由 FundingLegStrategyFactory + 各 IFundingLegStrategy 策略类计算
+    /// （原 private CalcNotionalByMode 已重构移除）；多空存续腿的 posiLong/posiShort 因界面禁用
+    /// 已从策略接口删除，故预付金/标的端计息基数不依赖多空头寸。
+    /// 注：当前仅含数据构造，反射诊断方法尚未实现（无 [TestMethod]）。
     /// </summary>
     [TestClass]
     public class SwapUnwindFloatingLegDiagnosticTdd

UnitTestProject/Modules/SwapModule/SwapUnwindPrepayPrincipalBugTdd.cs

@@ -93,9 +93,9 @@ namespace YLErp.Modules.SwapModule
             var position = MakePrepayPosition();
             var interests = _svc.GetInterests(td, td.trade_extend, UnwindDate, UnwindDate,
                 eodPositions, new List<swap_position> { position },
-                UnderlyingNotional, UnderlyingNotional, UnderlyingNotional, UnderlyingNotional, closePercent,
+                UnderlyingNotional, UnderlyingNotional, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, UnderlyingNotional, false, settment: false, newCalcLast: false, closeList: null);
+                false, UnderlyingNotional, false, settment: false, newCalcLast: false, closeList: null);
             Assert.AreEqual(1, interests.Count, "预付金腿应生成 1 条 flow_event");
             return interests[0];
         }
@@ -111,9 +111,9 @@ namespace YLErp.Modules.SwapModule
             var position = MakePrepayPosition(fix, rate);
             var interests = _svc.GetInterests(td, td.trade_extend, UnwindDate, UnwindDate,
                 eodPositions, new List<swap_position> { position },
-                notional, notional, notional, notional, closePercent,
+                notional, notional, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, notional, false, settment: false, newCalcLast: false, closeList: null);
+                false, notional, false, settment: false, newCalcLast: false, closeList: null);
             Assert.AreEqual(1, interests.Count, "预付金腿应生成 1 条 flow_event");
             return interests[0];
         }
@@ -279,9 +279,9 @@ namespace YLErp.Modules.SwapModule
             };
             var interests = _svc.GetInterests(td, td.trade_extend, ProdUnwindDate, ProdUnwindDate,
                 eod, new List<swap_position> { position },
-                fix, fix, fix, fix, closePercent,
+                fix, fix, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, fix, false, settment: false, newCalcLast: false, closeList: null);
+                false, fix, false, settment: false, newCalcLast: false, closeList: null);
             Assert.AreEqual(1, interests.Count, "预付金腿应生成 1 条 flow_event");
             return interests[0];
         }
@@ -373,9 +373,9 @@ namespace YLErp.Modules.SwapModule
             // orginPv 传 notional：非预付金腿不走 877-881 的 Fix 对齐，dynomicPrincipal = notional + notional - notional = notional
             var interests = _svc.GetInterests(td, td.trade_extend, ProdUnwindDate, ProdUnwindDate,
                 eod, new List<swap_position> { position },
-                notional, notional, notional, notional * closePercent, closePercent,
+                notional, notional * closePercent, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, notional, false, settment: false, newCalcLast: false, closeList: null);
+                false, notional, false, settment: false, newCalcLast: false, closeList: null);
             Assert.AreEqual(1, interests.Count, "非预付金腿应生成 1 条 flow_event");
             return interests[0];
         }
@@ -488,9 +488,9 @@ namespace YLErp.Modules.SwapModule
             };
             var interests = _svc.GetInterests(td, td.trade_extend, ProdUnwindDate, ProdUnwindDate,
                 eodPos, new List<swap_position> { position },
-                baseP, baseP, baseP, baseP * closePercent, closePercent,
+                baseP, baseP * closePercent, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, baseP, false, settment: eodPath, newCalcLast: false, closeList: null);
+                false, baseP, false, settment: eodPath, newCalcLast: false, closeList: null);
             Assert.AreEqual(1, interests.Count, $"mode={mode} 应生成 1 条 flow_event");
             return interests[0];
         }

UnitTestProject/Modules/SwapModule/SwapUnwindSameDayDoublePartialTest.cs

@@ -121,9 +121,9 @@ namespace YLErp.Modules.SwapModule
             var position = MakePosition(currentNotional);
             var interests = _svc.GetInterests(td, td.trade_extend, UnwindDate, UnwindDate,
                 MakeLastEod(), new List<swap_position> { position },
-                currentNotional, currentNotional, currentNotional, currentNotional * closePercent, closePercent,
+                currentNotional, currentNotional * closePercent, closePercent,
                 (int)SwapEventTypeEnum.平仓,
-                false, false, 0, N, false, settment: false, newCalcLast: false, closeList: null);
+                false, N, false, settment: false, newCalcLast: false, closeList: null);
             Assert.AreEqual(1, interests.Count, "标的期初全价腿应生成 1 条 flow_event");
             return interests[0];
         }

UnitTestProject/Modules/SwapModule/TestableSwapEodPositionService.cs

@@ -68,7 +68,7 @@ namespace YLErp.Modules.SwapModule
         /// 捕获真实收盘产生的 swap_flow_event（生产写 DbContext.swap_flow_event）。
         /// 与 PersistEodSwapPosition 同理，这里只收集不写库，供 GetConsumedInterest 真实计算。
         /// </summary>
-        protected void PersistFlowEvent(swap_flow_event flowEvent)
+        protected override void PersistFlowEvent(swap_flow_event flowEvent)
         {
             if (flowEvent.id == 0) flowEvent.id = _nextId++;
             FlowEvents.Add(flowEvent);
@@ -111,5 +111,16 @@ namespace YLErp.Modules.SwapModule
             ClientCashCalls.Add((amount, action));
             return _nextId++;
         }
+
+        /// <summary>
+        /// AddClientCashInCashOut 生产实现会查 DataCacheProvider.GetClientDataSource().GetData(ClientId)，
+        /// 纯内存测试无客户缓存会抛"客户信息未找到"。与 AddClientCash 同构 no-op，
+        /// 仅捕获调用记录，供断言使用。
+        /// </summary>
+        public override int AddClientCashInCashOut(OtcTradeBase td, double amount, string action, DateTime valueDate)
+        {
+            ClientCashCalls.Add((amount, action));
+            return _nextId++;
+        }
     }
 }

UnitTestProject/Program.cs

@@ -30,9 +30,24 @@ namespace YLErp
 
             YLServiceLocator.SetServiceCollection(services);
 
-            AppManager.Initialize(YLErp.Enums.SubSystemName.UnitTest, configuration);
-
-            DataCacheManager.UpdateOnce();
+            // P0 容错（2026-08-16）：初始化段（AppManager.Initialize 内部 InitializePsConfig 读 AppConfig 表、
+            // DataCacheManager.UpdateOnce 预热）在测试库不可达时不再让 ModuleInitializer 抛异常连坐全部 903 个
+            // 测试——降级为醒目警告，纯内存测试照常可跑；依赖配置/缓存/库的测试将以各自的连接错误失败
+            // （与降级前表现一致，只是不再全红归因到"类创建失败"）。完全跳过初始化仍用
+            // YLErp_UNIT_TEST_SKIP_INITIALIZATION=1。实测触发链：M1→AppManager.Initialize→ConfigDic→
+            // ServerVersion.AutoDetect→MySQL 不可达（Program.cs:33，2026-08-16 栈实证）。
+            try
+            {
+                AppManager.Initialize(YLErp.Enums.SubSystemName.UnitTest, configuration);
+                DataCacheManager.UpdateOnce();
+            }
+            catch (Exception ex)
+            {
+                var warn = $"[UnitTest初始化降级] 初始化段失败（测试库不可达？）：{ex.GetType().Name}: {ex.Message}。" +
+                           "纯内存测试继续；依赖配置/缓存/数据库的测试将失败——这是网络问题不是代码问题。";
+                Console.WriteLine(warn);
+                logger.Warn(warn);
+            }
 
             services.AddHttpClient("")
                 .ConfigurePrimaryHttpMessageHandler(messageHandler =>