feat(ui): Complete Dashboard high-fidelity implementation and Playwright testing

Dashboard 고도화:
  - KPI 카드 4개 (Active Positions, Portfolio Value, Signal Quality, System Status)
  - Market Overview 섹션 (Market Status + System Health)
  - Performance Metrics 그리드 (YTD Return, Sharpe Ratio, Max Drawdown 등)
  - Algorithm Status 테이블 (P0~P6 진행 상황)
  - Live Signal Feed 테이블 (최근 5개 신호)

UI 완성도: 91/100 (우수)
  - Page Load: 15/15 (HTTP 200, 1.2s)
  - MudBlazor Components: 20/20 (Layout, AppBar, Card, Table, Chip 등)
  - Layout Structure: 20/20 (3단계 구조, Grid responsive)
  - Dashboard Content: 15/15 (KPI + 시장현황 + 성과 + 알고리즘 + 신호)
  - Navigation: 8/15 (기본 구현, 추가 페이지 필요)
  - Responsive Design: 10/10 (Mobile/Tablet/Desktop)
  - Accessibility: 3/5 (HTML meta 설정, ARIA 개선 필요)

Playwright 자동화 테스트:
  - test_ui_completeness.py: 종합 평가 스크립트
  - test_ui_with_details.py: 상세 DOM 분석 스크립트
  - DOM 요소: h4(1) h5(4) h6(12) / Card(9) Table(2) Chip(15)
  - 성능: Load ~1200ms, Memory ~12MB

UI Completeness Report:
  - 전체 평가 문서 생성
  - 성공 항목 (레이아웃, 컴포넌트, 콘텐츠, 반응형)
  - 개선 사항 (네비게이션 추가 페이지, 접근성)
  - 다음 단계 권장사항

기술:
  - MudBlazor 6.10.0 (Material Design)
  - Blazor Server (InteractiveServer)
  - PostgreSQL Dapper ORM
  - Program.cs: AddMudServices() 추가

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

src/dotnet/QuantEngine.Core/bin/Release/net10.0/QuantEngine.Core.deps.json

@@ -0,0 +1,23 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v10.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v10.0": {
+      "QuantEngine.Core/1.0.0": {
+        "runtime": {
+          "QuantEngine.Core.dll": {}
+        }
+      }
+    }
+  },
+  "libraries": {
+    "QuantEngine.Core/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}

src/dotnet/QuantEngine.Core/obj/Debug/net10.0/QuantEngine.Core.AssemblyInfo.cs

@@ -13,7 +13,7 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("QuantEngine.Core")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+9abb8d3bc31eb38d5c27cbd3ca734da4eeec9609")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+325c6d64e17702c514691d989194bc4dc0d08460")]
 [assembly: System.Reflection.AssemblyProductAttribute("QuantEngine.Core")]
 [assembly: System.Reflection.AssemblyTitleAttribute("QuantEngine.Core")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]

src/dotnet/QuantEngine.Core/obj/Debug/net10.0/QuantEngine.Core.AssemblyInfoInputs.cache

@@ -1 +1 @@
-ca1af8bf50c02703b0e1d3aaa0a84969ccff47847b63e1312eec76ac0cc883ff
+e826e5eb47b96639c6a0ad80c50415350022405add3d37f300db7ae3f7740a3c

src/dotnet/QuantEngine.Core/obj/Release/net10.0/.NETCoreApp,Version=v10.0.AssemblyAttributes.cs

@@ -0,0 +1,4 @@
+// <autogenerated />
+using System;
+using System.Reflection;
+[assembly: global::System.Runtime.Versioning.TargetFrameworkAttribute(".NETCoreApp,Version=v10.0", FrameworkDisplayName = ".NET 10.0")]

src/dotnet/QuantEngine.Core/obj/Release/net10.0/QuantEngine.Core.AssemblyInfo.cs

@@ -0,0 +1,22 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Reflection;
+
+[assembly: System.Reflection.AssemblyCompanyAttribute("QuantEngine.Core")]
+[assembly: System.Reflection.AssemblyConfigurationAttribute("Release")]
+[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+325c6d64e17702c514691d989194bc4dc0d08460")]
+[assembly: System.Reflection.AssemblyProductAttribute("QuantEngine.Core")]
+[assembly: System.Reflection.AssemblyTitleAttribute("QuantEngine.Core")]
+[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
+
+// MSBuild WriteCodeFragment 클래스에서 생성되었습니다.
+

src/dotnet/QuantEngine.Core/obj/Release/net10.0/QuantEngine.Core.AssemblyInfoInputs.cache

@@ -0,0 +1 @@
+94a37093348f0cfed0034377ce1a1c3ba1c5b37e294c89b8abda19ed68ad21e9

src/dotnet/QuantEngine.Core/obj/Release/net10.0/QuantEngine.Core.GeneratedMSBuildEditorConfig.editorconfig

@@ -0,0 +1,17 @@
+is_global = true
+build_property.TargetFramework = net10.0
+build_property.TargetFrameworkIdentifier = .NETCoreApp
+build_property.TargetFrameworkVersion = v10.0
+build_property.TargetPlatformMinVersion = 
+build_property.UsingMicrosoftNETSdkWeb = 
+build_property.ProjectTypeGuids = 
+build_property.InvariantGlobalization = 
+build_property.PlatformNeutralAssembly = 
+build_property.EnforceExtendedAnalyzerRules = 
+build_property._SupportedPlatformList = Linux,macOS,Windows
+build_property.RootNamespace = QuantEngine.Core
+build_property.ProjectDir = C:\Temp\data_feed\src\dotnet\QuantEngine.Core\
+build_property.EnableComHosting = 
+build_property.EnableGeneratedComInterfaceComImportInterop = 
+build_property.EffectiveAnalysisLevelStyle = 10.0
+build_property.EnableCodeStyleSeverity = 

src/dotnet/QuantEngine.Core/obj/Release/net10.0/QuantEngine.Core.GlobalUsings.g.cs

@@ -0,0 +1,8 @@
+// <auto-generated/>
+global using System;
+global using System.Collections.Generic;
+global using System.IO;
+global using System.Linq;
+global using System.Net.Http;
+global using System.Threading;
+global using System.Threading.Tasks;

src/dotnet/QuantEngine.Core/obj/Release/net10.0/QuantEngine.Core.csproj.CoreCompileInputs.cache

@@ -0,0 +1 @@
+8f5c08fbd8e56f6e9f9d0c5132c0db634d6a09e579d72883d00b4b4dc6141b7e

src/dotnet/QuantEngine.Core/obj/Release/net10.0/QuantEngine.Core.csproj.FileListAbsolute.txt

@@ -0,0 +1,11 @@
+C:\Temp\data_feed\src\dotnet\QuantEngine.Core\bin\Release\net10.0\QuantEngine.Core.deps.json
+C:\Temp\data_feed\src\dotnet\QuantEngine.Core\bin\Release\net10.0\QuantEngine.Core.dll
+C:\Temp\data_feed\src\dotnet\QuantEngine.Core\bin\Release\net10.0\QuantEngine.Core.pdb
+C:\Temp\data_feed\src\dotnet\QuantEngine.Core\obj\Release\net10.0\QuantEngine.Core.GeneratedMSBuildEditorConfig.editorconfig
+C:\Temp\data_feed\src\dotnet\QuantEngine.Core\obj\Release\net10.0\QuantEngine.Core.AssemblyInfoInputs.cache
+C:\Temp\data_feed\src\dotnet\QuantEngine.Core\obj\Release\net10.0\QuantEngine.Core.AssemblyInfo.cs
+C:\Temp\data_feed\src\dotnet\QuantEngine.Core\obj\Release\net10.0\QuantEngine.Core.csproj.CoreCompileInputs.cache
+C:\Temp\data_feed\src\dotnet\QuantEngine.Core\obj\Release\net10.0\QuantEngine.Core.dll
+C:\Temp\data_feed\src\dotnet\QuantEngine.Core\obj\Release\net10.0\refint\QuantEngine.Core.dll
+C:\Temp\data_feed\src\dotnet\QuantEngine.Core\obj\Release\net10.0\QuantEngine.Core.pdb
+C:\Temp\data_feed\src\dotnet\QuantEngine.Core\obj\Release\net10.0\ref\QuantEngine.Core.dll