diff --git a/Framework/YLErp.Core/Interest/AccrualContext.cs b/Framework/YLErp.Core/Interest/AccrualContext.cs
index cc1a494c..3cdbf5fb 100644
--- a/Framework/YLErp.Core/Interest/AccrualContext.cs
+++ b/Framework/YLErp.Core/Interest/AccrualContext.cs
@@ -22,8 +22,8 @@ public readonly struct AccrualContext
     public int Precision { get; }
 
     /// <summary>可选 trace 收集器；为 null 时不记录（纯计算场景直接传 null，与开关无关）。</summary>
-    public InterestTrace? Trace { get; }
+    public AccrualTrace? Trace { get; }
 
-    public AccrualContext(int annualDays, int precision = 11, InterestTrace? trace = null)
+    public AccrualContext(int annualDays, int precision = 11, AccrualTrace? trace = null)
         => (AnnualDays, Precision, Trace) = (annualDays, precision, trace);
 }
diff --git a/Framework/YLErp.Core/Interest/InterestTrace.cs b/Framework/YLErp.Core/Interest/AccrualTrace.cs
similarity index 78%
rename from Framework/YLErp.Core/Interest/InterestTrace.cs
rename to Framework/YLErp.Core/Interest/AccrualTrace.cs
index f27a5999..d2c6d0bf 100644
--- a/Framework/YLErp.Core/Interest/InterestTrace.cs
+++ b/Framework/YLErp.Core/Interest/AccrualTrace.cs
@@ -11,68 +11,68 @@ namespace YLErp.Core.Interest;
 /// <para><b>为什么是收集器而不是日志调用</b>：计息数学（SwapInterest / FundingLegAccrual）必须保持纯函数、
 /// 可单测、不依赖 NLog；但按工程铁律，关键路径日志须<b>无条件常驻落盘</b>（出问题时事后翻日志定位，不能依赖开关）。
 /// 折中：纯函数把"发生了什么"记录为结构化条目写入本收集器，由<b>适配器(IO 边界)</b>统一经
-/// <c>SwapCalcTrace.Persist</c> 常驻落盘。落盘职责归一处，计息代码零日志依赖、保持干净。</para>
+/// <c>SwapCalcTrace.Write</c> 常驻落盘。落盘职责归一处，计息代码零日志依赖、保持干净。</para>
 ///
 /// <para><b>可 diff</b>：<see cref="ToString"/> 产出稳定、有序、与 SwapCalcTrace.Day 对齐的逐行文本，
 /// 新旧引擎对同一笔交易跑出的 trace 可直接 diff，定位"是计算变了还是重构引入了漂移"。</para>
 ///
 /// <para>所有记录方法均为语义化命名（Day / ResetBefore / Rollover …），调用点一眼即懂，不污染数学可读性。</para>
 /// </summary>
-public sealed class InterestTrace
+public sealed class AccrualTrace
 {
-    private readonly List<InterestTraceEntry> _entries = new();
+    private readonly List<AccrualTraceEntry> _entries = new();
 
     /// <summary>已记录的追踪条目（只读）。</summary>
-    public IReadOnlyList<InterestTraceEntry> Entries => _entries;
+    public IReadOnlyList<AccrualTraceEntry> Entries => _entries;
 
     /// <summary>计息区间起点：标记本次计算的整体边界与年化口径。</summary>
     public void MarkStart(DateTime start, DateTime end, AccrualBoundary boundary, int annualDays, bool annualized)
-        => Add(InterestStep.Start, start,
+        => Add(AccrualTraceEvent.Start, start,
             $"START 区间[{start:yyyy-MM-dd},{end:yyyy-MM-dd}] {boundary} annualDays={annualDays} annualized={annualized}");
 
     /// <summary>逐日明细：当日生效利率、计息基数、当日利息、累计利息。这是"为何 accrued N 天而非 M 天"的直接证据。</summary>
     public void Day(int idx, DateTime date, decimal rate, decimal basePrincipal, decimal dayInterest, decimal accumulated)
-        => Add(InterestStep.DayAccrual, date,
+        => Add(AccrualTraceEvent.DayAccrual, date,
             $"  [{idx}] {date:yyyy-MM-dd} rate={rate:P6} base={basePrincipal:F4} day={dayInterest:F6} acc={accumulated:F6}");
 
     /// <summary>重置日<b>前</b>：生效利率(旧)与计息本金(滚动前)。利率/本金切换的"因"。</summary>
     public void ResetBefore(DateTime resetDate, decimal rateOld, decimal principalBefore)
-        => Add(InterestStep.ResetBefore, resetDate,
+        => Add(AccrualTraceEvent.ResetBefore, resetDate,
             $"  RESET↓ {resetDate:yyyy-MM-dd} rate(old)={rateOld:P6} principal(before)={principalBefore:F4}");
 
     /// <summary>重置日<b>后</b>：生效利率(新)与计息本金(滚动后，已并本金)。利率/本金切换的"果"。</summary>
     public void ResetAfter(DateTime resetDate, decimal rateNew, decimal principalAfter)
-        => Add(InterestStep.ResetAfter, resetDate,
+        => Add(AccrualTraceEvent.ResetAfter, resetDate,
             $"  RESET↑ {resetDate:yyyy-MM-dd} rate(new)={rateNew:P6} principal(after)={principalAfter:F4}");
 
     /// <summary>本金增加（利息滚入计息基数）：复利段末并本金的瞬间，记录滚入额与并本金后的新基数。</summary>
     public void Rollover(DateTime resetDate, decimal accruedRolled, decimal newBasis)
-        => Add(InterestStep.Rollover, resetDate,
+        => Add(AccrualTraceEvent.Rollover, resetDate,
             $"  ROLLOVER {resetDate:yyyy-MM-dd} accrued(rolled)={accruedRolled:F6} newBasis={newBasis:F4}");
 
     /// <summary>平仓缩放：平仓比例、累计已实现、剩余未实现。</summary>
     public void Unwind(DateTime date, decimal unwindPercent, decimal realized, decimal remainingUnrealized)
-        => Add(InterestStep.Unwind, date,
+        => Add(AccrualTraceEvent.Unwind, date,
             $"  UNWIND {date:yyyy-MM-dd} pct={unwindPercent:P2} realized={realized:F6} remaining={remainingUnrealized:F6}");
 
     /// <summary>收尾：最终累计利息与当日利息。</summary>
     public void MarkEnd(decimal totalAccrued, decimal totalToday)
-        => Add(InterestStep.End, default,
+        => Add(AccrualTraceEvent.End, default,
             $"END accrued={totalAccrued:F6} today={totalToday:F6}");
 
-    private void Add(InterestStep step, DateTime date, string line)
-        => _entries.Add(new InterestTraceEntry(step, date, line));
+    private void Add(AccrualTraceEvent step, DateTime date, string line)
+        => _entries.Add(new AccrualTraceEntry(step, date, line));
 
     /// <summary>稳定可 diff 的逐行文本（与 SwapCalcTrace.Day 格式对齐）。</summary>
     public override string ToString()
         => _entries.Count == 0 ? "<empty trace>" : string.Join(Environment.NewLine, _entries.Select(e => e.Line));
 }
 
-/// <summary>追踪条目的语义类别，便于程序化筛选（如"只看重置日"）。</summary>
-public enum InterestStep
+/// <summary>追踪条目的语义类别（对应 QuantLib/Strata 的"事件"概念），便于程序化筛选（如"只看重置日"）。</summary>
+public enum AccrualTraceEvent
 {
     Start, DayAccrual, ResetBefore, ResetAfter, Rollover, Unwind, End
 }
 
 /// <summary>单条追踪记录：类别 + 日期 + 已渲染文本。</summary>
-public readonly record struct InterestTraceEntry(InterestStep Step, DateTime Date, string Line);
+public readonly record struct AccrualTraceEntry(AccrualTraceEvent Step, DateTime Date, string Line);
diff --git a/YLErpDAL/Modules/SwapModule/Accrual/FundingLegAccrual.cs b/YLErpDAL/Modules/SwapModule/Accrual/FundingLegAccrual.cs
index cba457b8..593a1500 100644
--- a/YLErpDAL/Modules/SwapModule/Accrual/FundingLegAccrual.cs
+++ b/YLErpDAL/Modules/SwapModule/Accrual/FundingLegAccrual.cs
@@ -48,7 +48,7 @@ public static class FundingLegAccrual
         FundingLegRate rate,
         AccrualPolicy policy,
         DateTime eodDate,
-        InterestTrace? trace = null)
+        AccrualTrace? trace = null)
     {
         var baseTdInterestPrincipal = priorAccrualPrincipal + positionPrincipal - originalPv;
         var baseInterestPrincipal = baseTdInterestPrincipal * closeRatio;
diff --git a/YLErpDAL/Modules/SwapModule/SwapCalcTrace.cs b/YLErpDAL/Modules/SwapModule/SwapCalcTrace.cs
index 93dd6011..f6e1a1ec 100644
--- a/YLErpDAL/Modules/SwapModule/SwapCalcTrace.cs
+++ b/YLErpDAL/Modules/SwapModule/SwapCalcTrace.cs
@@ -86,11 +86,11 @@ namespace YLErp.Modules.SwapModule
         public static string DumpForRequest() => _reqBuf.Value?.ToString() ?? "";
 
         /// <summary>
-        /// 把纯函数产出的 <see cref="InterestTrace"/> 常驻落盘（关键路径日志）。
+        /// 把纯函数产出的 <see cref="AccrualTrace"/> 常驻落盘（关键路径日志）。
         /// 每条目经 <see cref="Critical"/> 写出——<b>无条件</b>落盘，与开关无关；
         /// 开关打开时同时进内存 buffer 供实时查看 / 单测断言。这是事后 diff 新旧引擎的主通道。
         /// </summary>
-        public static void Persist(InterestTrace? trace)
+        public static void Write(AccrualTrace? trace)
         {
             if (trace == null) return;
             foreach (var entry in trace.Entries)
diff --git a/YLErpDAL/Modules/SwapModule/SwapDealService.cs b/YLErpDAL/Modules/SwapModule/SwapDealService.cs
index dd61e24f..3234ae5a 100644
--- a/YLErpDAL/Modules/SwapModule/SwapDealService.cs
+++ b/YLErpDAL/Modules/SwapModule/SwapDealService.cs
@@ -1593,7 +1593,7 @@ namespace YLErp.Modules.SwapModule
                 annualDays: annualDays,
                 isAnnualized: position.IsAnnualized);
             // 完整计息 trace：收集器由适配器创建，随后经 SwapCalcTrace 常驻落盘（关键路径日志，无条件）。
-            var interestTrace = new InterestTrace();
+            var interestTrace = new AccrualTrace();
             var result = FundingLegAccrual.AccrueSimpleEod(
                 priorUnrealized: preEodPosition.InterestProfitSum,
                 priorAccrualPrincipal: preEodPosition.TdInterestPrincipal,
@@ -1606,7 +1606,7 @@ namespace YLErp.Modules.SwapModule
                 trace: interestTrace);
             InterestAmount = result.Accrued;
             TdInterestAmount = result.AccruedToday;
-            SwapCalcTrace.Persist(interestTrace);
+            SwapCalcTrace.Write(interestTrace);
         }
 
         /// <summary>