Set up DOTS + Netcode for Entities foundation

One-time stack setup per Docs/dots-setup-task.md (Unity 6.4.7 / 6000.4.7f1).
Packages: entities 6.4.0, entities.graphics 6.4.0, netcode 1.13.2, physics 1.4.6.

- Assets/_Project asmdef split: ProjectM.Simulation/Client/Server/Authoring (root ns ProjectM)
- GameBootstrap : ClientServerBootstrap; verified separate client + server worlds in Play Mode
- Gameplay subscene wired into SampleScene as a baking target
- Heartbeat component + Burst ISystem; EditMode smoke test green (1/1)
- In-repo Obsidian vault (Docs/Vault) incl. DR-001 (plain-Entities test over internal NetCodeTestWorld)
- Portable .mcp.json (basic-memory + serena via ${CLAUDE_PROJECT_DIR}); CLAUDE.md conventions
- .gitignore for DOTS baking cache + machine-local config

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Assets/Settings/PC_RPAsset.asset

@@ -12,8 +12,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: bf2edee5c58d82540a51f03df9d42094, type: 3}
   m_Name: PC_RPAsset
   m_EditorClassIdentifier: 
-  k_AssetVersion: 12
-  k_AssetPreviousVersion: 12
+  k_AssetVersion: 13
+  k_AssetPreviousVersion: 13
   m_RendererType: 1
   m_RendererData: {fileID: 0}
   m_RendererDataList:
@@ -53,6 +53,7 @@ MonoBehaviour:
   m_AdditionalLightsShadowResolutionTierHigh: 1024
   m_ReflectionProbeBlending: 1
   m_ReflectionProbeBoxProjection: 1
+  m_ReflectionProbeAtlas: 1
   m_ShadowDistance: 50
   m_ShadowCascadeCount: 4
   m_Cascade2Split: 0.25
@@ -78,11 +79,11 @@ MonoBehaviour:
   m_UseAdaptivePerformance: 1
   m_ColorGradingMode: 0
   m_ColorGradingLutSize: 32
+  m_AllowPostProcessAlphaOutput: 0
   m_UseFastSRGBLinearConversion: 0
   m_SupportDataDrivenLensFlare: 1
   m_SupportScreenSpaceLensFlare: 1
   m_GPUResidentDrawerMode: 0
-  m_UseLegacyLightmaps: 0
   m_SmallMeshScreenPercentage: 0
   m_GPUResidentDrawerEnableOcclusionCullingInCameras: 0
   m_ShadowType: 1
@@ -109,6 +110,7 @@ MonoBehaviour:
   m_PrefilterDebugKeywords: 1
   m_PrefilterWriteRenderingLayers: 0
   m_PrefilterHDROutput: 1
+  m_PrefilterAlphaOutput: 0
   m_PrefilterSSAODepthNormals: 0
   m_PrefilterSSAOSourceDepthLow: 1
   m_PrefilterSSAOSourceDepthMedium: 1
@@ -126,8 +128,15 @@ MonoBehaviour:
   m_PrefilterSoftShadowsQualityHigh: 0
   m_PrefilterSoftShadows: 0
   m_PrefilterScreenCoord: 1
+  m_PrefilterScreenSpaceIrradiance: 0
   m_PrefilterNativeRenderPass: 1
   m_PrefilterUseLegacyLightmaps: 0
+  m_PrefilterBicubicLightmapSampling: 0
+  m_PrefilterReflectionProbeRotation: 0
+  m_PrefilterReflectionProbeBlending: 0
+  m_PrefilterReflectionProbeBoxProjection: 0
+  m_PrefilterReflectionProbeAtlas: 0
+  m_PrefilterPointSamplingUpsampling: 0
   m_ShaderVariantLogLevel: 0
   m_ShadowCascades: 0
   m_Textures: