src/KArtSell.Host/Features/Portfolio/VS08_DashboardEndpoint.cs

@@ -208,11 +208,11 @@ public class DashboardService : IDashboardService
                 a.Message)).ToList(),
             HealthScore = healthScore,
             RiskInsights = riskInsights,
-            LastUpdate = _clock.UtcNow.DateTime,
+            LastUpdate = _clock.UtcNow.UtcDateTime,
         };
 
         // Cache result
-        _cache[portfolioId] = (_clock.UtcNow, response);
+        _cache[portfolioId] = (_clock.UtcNow.UtcDateTime, response);
 
         return response;
     }

src/KArtSell.Host/Program.cs

@@ -143,11 +143,13 @@ builder.Services.AddScoped<KArtSell.Host.Features.MarketData.IMarketDataIngestio
 builder.Services.AddScoped<KArtSell.Host.Features.Portfolio.IPortfolioRebalanceService>(sp =>
     new KArtSell.Host.Features.Portfolio.PortfolioRebalanceService(
         sp.GetRequiredService<NpgsqlDataSource>(),
-        sp.GetRequiredService<IBackgroundJobClient>()));
+        sp.GetRequiredService<IBackgroundJobClient>(),
+        sp.GetRequiredService<IClock>()));
 
 builder.Services.AddScoped<KArtSell.Host.Features.Portfolio.IRiskMetricsService>(sp =>
     new KArtSell.Host.Features.Portfolio.RiskMetricsService(
-        sp.GetRequiredService<NpgsqlDataSource>()));
+        sp.GetRequiredService<NpgsqlDataSource>(),
+        sp.GetRequiredService<IClock>()));
 
 // Risk & Stress (VS-06~07)
 builder.Services.AddScoped<KArtSell.Host.Features.Portfolio.IStressTestService>(sp =>
@@ -162,7 +164,8 @@ builder.Services.AddScoped<KArtSell.Host.Features.Portfolio.IAlertService>(sp =>
 // Dashboard (VS-08)
 builder.Services.AddScoped<KArtSell.Host.Features.Portfolio.IDashboardService>(sp =>
     new KArtSell.Host.Features.Portfolio.DashboardService(
-        sp.GetRequiredService<NpgsqlDataSource>()));
+        sp.GetRequiredService<NpgsqlDataSource>(),
+        sp.GetRequiredService<IClock>()));
 
 // Security Master (VS-02) - Temporarily disabled: ISecurityMasterRulesStore implementation pending
 // builder.Services.AddScoped<KArtSell.Host.Features.SecurityMaster.ISecurityMasterSyncHandler>(sp =>

src/KArtSell.Modules.ModelOperations/Domain/VS08_DashboardPolicy.cs

@@ -3,7 +3,7 @@ namespace KArtSell.Modules.ModelOperations.Domain;
 /// <summary>
 /// VS-08 DOMAIN: Dashboard aggregation policy
 /// Pure business logic for combining portfolio, risk metrics, stress, alerts into unified snapshot
-/// No I/O, no DateTime.Now (all times injected)
+/// No I/O; time-dependent values are supplied by callers.
 /// </summary>
 
 // Note: This policy combines results from VS-04~07 components

tests/KArtSell.Integration.Tests/Features/MarketData/VS03_IngestionIntegrationTests.cs

@@ -25,7 +25,7 @@ public sealed class MarketDataIngestionUnitTests
             Guid.NewGuid(), "AAPL", DateOnly.FromDateTime(DateTime.UtcNow),
             100m, 102m, 99m, 101m, 1_000_000, DateTime.UtcNow, 1, "KRX", Guid.NewGuid().ToString());
 
-        var result = MarketDataPolicy.ValidatePrice(price);
+        var result = MarketDataPolicy.ValidatePrice(price, DateOnly.FromDateTime(DateTime.UtcNow));
 
         Assert.True(result.IsValid);
         Assert.Empty(result.Errors);
@@ -38,7 +38,7 @@ public sealed class MarketDataIngestionUnitTests
             Guid.NewGuid(), "AAPL", DateOnly.FromDateTime(DateTime.UtcNow),
             -100m, 110m, 90m, 105m, 1_000_000, DateTime.UtcNow, 1, "KRX", Guid.NewGuid().ToString());
 
-        var result = MarketDataPolicy.ValidatePrice(price);
+        var result = MarketDataPolicy.ValidatePrice(price, DateOnly.FromDateTime(DateTime.UtcNow));
 
         Assert.False(result.IsValid);
         Assert.NotEmpty(result.Errors);

tests/KArtSell.ModelOperations.UnitTests/VS03_MarketDataPolicyTests.cs

@@ -22,7 +22,7 @@ public class VS03_MarketDataPolicyTests
             DataSource: "KRX",
             CorrelationId: "test-123");
 
-        var result = MarketDataPolicy.ValidatePrice(price);
+        var result = MarketDataPolicy.ValidatePrice(price, DateOnly.FromDateTime(DateTime.UtcNow));
 
         Assert.True(result.IsValid);
         Assert.Empty(result.Errors);
@@ -46,7 +46,7 @@ public class VS03_MarketDataPolicyTests
             DataSource: "KRX",
             CorrelationId: "test-123");
 
-        var result = MarketDataPolicy.ValidatePrice(price);
+        var result = MarketDataPolicy.ValidatePrice(price, DateOnly.FromDateTime(DateTime.UtcNow));
 
         Assert.False(result.IsValid);
         Assert.Contains("Open price must be > 0", result.Errors);
@@ -69,7 +69,7 @@ public class VS03_MarketDataPolicyTests
             DataSource: "KRX",
             CorrelationId: "test-123");
 
-        var result = MarketDataPolicy.ValidatePrice(price);
+        var result = MarketDataPolicy.ValidatePrice(price, DateOnly.FromDateTime(DateTime.UtcNow));
 
         Assert.False(result.IsValid);
         Assert.Contains("High must be >= Low", result.Errors);
@@ -92,7 +92,7 @@ public class VS03_MarketDataPolicyTests
             DataSource: "KRX",
             CorrelationId: "test-123");
 
-        var result = MarketDataPolicy.ValidatePrice(price);
+        var result = MarketDataPolicy.ValidatePrice(price, DateOnly.FromDateTime(DateTime.UtcNow));
 
         Assert.False(result.IsValid);
         Assert.Contains("cannot be in the future", result.Errors[0]);
@@ -115,7 +115,7 @@ public class VS03_MarketDataPolicyTests
             DataSource: "KRX",
             CorrelationId: "test-123");
 
-        var result = MarketDataPolicy.ValidatePrice(price);
+        var result = MarketDataPolicy.ValidatePrice(price, DateOnly.FromDateTime(DateTime.UtcNow));
 
         Assert.True(result.IsValid);
         Assert.True(result.QualityScore < 80); // Quality degraded but still valid