feat: 방향전환 경로 검증 시스템 구현

- PathValidationResult 클래스를 Validation 폴더에 적절히 배치
- BacktrackingPattern 클래스로 A→B→A 패턴 상세 검출
- DirectionChangePlanner에서 되돌아가기 패턴 자동 검증
- CLAUDE.md에 AGVNavigationCore 프로젝트 구조 가이드 추가
- 빌드 시스템 오류 모두 해결

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Cs_HMI/AGVNavigationCore/AGVNavigationCore.csproj

@@ -65,6 +65,11 @@
     <Compile Include="Controls\AGVState.cs" />
     <Compile Include="Controls\IAGV.cs" />
     <Compile Include="Controls\UnifiedAGVCanvas.Events.cs">
+      <DependentUpon>UnifiedAGVCanvas.cs</DependentUpon>
+      <SubType>UserControl</SubType>
+    </Compile>
+    <Compile Include="Controls\UnifiedAGVCanvas.Mouse.cs">
+      <DependentUpon>UnifiedAGVCanvas.cs</DependentUpon>
       <SubType>UserControl</SubType>
     </Compile>
     <Compile Include="Models\Enums.cs" />
@@ -73,6 +78,7 @@
     <Compile Include="PathFinding\Planning\AGVPathfinder.cs" />
     <Compile Include="PathFinding\Planning\DirectionChangePlanner.cs" />
     <Compile Include="PathFinding\Validation\DockingValidationResult.cs" />
+    <Compile Include="PathFinding\Validation\PathValidationResult.cs" />
     <Compile Include="PathFinding\Analysis\JunctionAnalyzer.cs" />
     <Compile Include="PathFinding\Core\PathNode.cs" />
     <Compile Include="PathFinding\Core\AStarPathfinder.cs" />
@@ -84,10 +90,6 @@
     <Compile Include="Controls\UnifiedAGVCanvas.Designer.cs">
       <DependentUpon>UnifiedAGVCanvas.cs</DependentUpon>
     </Compile>
-    <Compile Include="Controls\UnifiedAGVCanvas.Mouse.cs">
-      <DependentUpon>UnifiedAGVCanvas.cs</DependentUpon>
-      <SubType>UserControl</SubType>
-    </Compile>
     <Compile Include="Utils\DockingValidator.cs" />
     <Compile Include="Utils\LiftCalculator.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />