refactor(dotnet): add collection audit trail

src/dotnet/QuantEngine.Application/Models/CollectionExecutionAudit.cs

@@ -0,0 +1,10 @@
+namespace QuantEngine.Application.Models;
+
+public sealed record CollectionExecutionAudit(
+    string RunId,
+    string State,
+    DateTimeOffset StartedAt,
+    DateTimeOffset? FinishedAt,
+    int SuccessCount,
+    int ErrorCount,
+    string? Message);

src/dotnet/QuantEngine.Application/Services/DataCollectionService.cs

@@ -1,22 +1,13 @@
-using System.Text.Json;
-using QuantEngine.Core.Interfaces;
 using QuantEngine.Application.Interfaces;
 
 namespace QuantEngine.Application.Services;
 
 public class DataCollectionService
 {
-    private readonly IKisApiClient _kisApiClient;
-    private readonly ICollectionRepository _repository;
     private readonly ICollectionOrchestrator _orchestrator;
 
-    public DataCollectionService(
-        IKisApiClient kisApiClient,
-        ICollectionRepository repository,
-        ICollectionOrchestrator orchestrator)
+    public DataCollectionService(ICollectionOrchestrator orchestrator)
     {
-        _kisApiClient = kisApiClient;
-        _repository = repository;
         _orchestrator = orchestrator;
     }
 

src/dotnet/QuantEngine.Application/Services/KisDataCollectionOrchestrator.cs

@@ -1,10 +1,12 @@
 
 using System.Text.Json;
 using System.Text.Json.Serialization;
+using System.IO;
 using Microsoft.Extensions.Logging;
 using QuantEngine.Core.Interfaces;
 using QuantEngine.Application.Interfaces;
 using QuantEngine.Application.Services;
+using QuantEngine.Application.Models;
 
 namespace QuantEngine.Application.Services;
 
@@ -15,6 +17,7 @@ public class KisDataCollectionOrchestrator : ICollectionOrchestrator
     private readonly PriceDataNormalizer _normalizer;
     private readonly SourcePriorityResolver _priorityResolver;
     private readonly ILogger<KisDataCollectionOrchestrator> _logger;
+    private readonly string _auditRoot;
 
     public KisDataCollectionOrchestrator(
         IKisApiClient kisApiClient,
@@ -28,6 +31,28 @@ public class KisDataCollectionOrchestrator : ICollectionOrchestrator
         _normalizer = normalizer;
         _priorityResolver = priorityResolver;
         _logger = logger;
+        _auditRoot = FindRepoTempRoot();
+    }
+
+    private static string FindRepoTempRoot()
+    {
+        var current = new DirectoryInfo(AppContext.BaseDirectory);
+        while (current != null)
+        {
+            if (Directory.Exists(Path.Combine(current.FullName, ".git")))
+            {
+                return Path.Combine(current.FullName, "Temp", "collection_audit");
+            }
+            current = current.Parent;
+        }
+        return Path.Combine(Directory.GetCurrentDirectory(), "Temp", "collection_audit");
+    }
+
+    private void AppendAudit(CollectionExecutionAudit audit)
+    {
+        Directory.CreateDirectory(_auditRoot);
+        var path = Path.Combine(_auditRoot, $"{audit.RunId}.jsonl");
+        File.AppendAllText(path, JsonSerializer.Serialize(audit, new JsonSerializerOptions { WriteIndented = false }) + Environment.NewLine);
     }
 
     public async Task<CollectionRunResult> RunCollectionAsync(string runId, string account, List<string> tickers)
@@ -45,6 +70,7 @@ public class KisDataCollectionOrchestrator : ICollectionOrchestrator
         try
         {
             _logger.LogInformation("Starting collection run {RunId}", runId);
+            AppendAudit(new CollectionExecutionAudit(runId, "RUNNING", DateTimeOffset.UtcNow, null, 0, 0, "started"));
 
             var kisSource = new KisApiPriceSource(_kisApiClient);
             var rows = new List<Dictionary<string, object>>();
@@ -157,6 +183,7 @@ public class KisDataCollectionOrchestrator : ICollectionOrchestrator
             result.SourceCounts = sourceCounts;
             result.Rows = rows;
             result.Errors = errors;
+            AppendAudit(new CollectionExecutionAudit(runId, result.Status, DateTimeOffset.Parse(startedAt), DateTimeOffset.Parse(finishedAt), result.SuccessCount, result.ErrorCount, "finished"));
 
             // Save run record
             await _repository.SaveRunAsync(new CollectionRunRecord(
@@ -204,6 +231,7 @@ public class KisDataCollectionOrchestrator : ICollectionOrchestrator
             result.Status = "FAILED";
             result.FinishedAt = DataNormalizationHelper.KstNowIso();
             result.ErrorMessage = ex.Message;
+            AppendAudit(new CollectionExecutionAudit(runId, result.Status, DateTimeOffset.Parse(startedAt), DateTimeOffset.Parse(result.FinishedAt), result.SuccessCount, result.ErrorCount, ex.Message));
             return result;
         }
     }
@@ -358,4 +386,3 @@ public class KisDataCollectionOrchestrator : ICollectionOrchestrator
 }
 
 
-

src/dotnet/QuantEngine.Core.Tests/KisDataCollectionOrchestratorTests.cs

@@ -93,6 +93,11 @@ public class KisDataCollectionOrchestratorTests
         var runId = "test-run-002";
         var ticker = "005930";
         var account = "mock";
+        var auditPath = Path.Combine(FindRepoRoot(), "Temp", "collection_audit", $"{runId}.jsonl");
+        if (File.Exists(auditPath))
+        {
+            File.Delete(auditPath);
+        }
 
         _repositoryMock
             .Setup(r => r.GetLatestSnapshotsForTickerAsync(ticker, It.IsAny<int>()))
@@ -128,6 +133,8 @@ public class KisDataCollectionOrchestratorTests
         Assert.NotNull(result);
         Assert.Equal("COMPLETED", result.Status);
         Assert.Equal(1, result.SuccessCount);
+        Assert.True(File.Exists(auditPath));
+        Assert.Contains("COMPLETED", File.ReadAllText(auditPath));
 
         _kisApiClientMock.Verify(
             k => k.GetCurrentPriceAsync(ticker, account),
@@ -390,4 +397,19 @@ public class KisDataCollectionOrchestratorTests
         Assert.False(result);
         Assert.Null(args[2]);
     }
+
+    private static string FindRepoRoot()
+    {
+        var current = new DirectoryInfo(AppContext.BaseDirectory);
+        while (current != null)
+        {
+            if (Directory.Exists(Path.Combine(current.FullName, ".git")))
+            {
+                return current.FullName;
+            }
+            current = current.Parent;
+        }
+
+        throw new InvalidOperationException("Repository root not found.");
+    }
 }