refactor: Build-Output in Build/{OS}/-Ordnerstruktur

Plattformspezifische bin/obj/publish-Ordner unter Build/Linux/
und Build/Windows/ statt bin-linux/, obj-linux/, publish/ etc.

- Directory.Build.props: OS-Erkennung setzt BaseOutputPath,
  BaseIntermediateOutputPath und MSBuildProjectExtensionsPath
  auf Build/{Linux|Windows|macOS}/
- gott.csproj: Vereinfacht auf ein einziges Build/** Exclude
- deploy.sh: publish-Output nach Build/Linux/publish
- OpenClawEndpoint.cs: DB-Pfad relativ zu AppContext.BaseDirectory
- Doku (README, ARCHITECTURE, ARCHITECTURE_QUICK) aktualisiert

Directory.Build.props

@@ -0,0 +1,17 @@
+<Project>
+  <PropertyGroup Condition="$([MSBuild]::IsOSPlatform('Windows'))">
+    <BaseIntermediateOutputPath>Build\Windows\obj\</BaseIntermediateOutputPath>
+    <MSBuildProjectExtensionsPath>Build\Windows\obj\</MSBuildProjectExtensionsPath>
+    <BaseOutputPath>Build\Windows\bin\</BaseOutputPath>
+  </PropertyGroup>
+  <PropertyGroup Condition="$([MSBuild]::IsOSPlatform('Linux'))">
+    <BaseIntermediateOutputPath>Build/Linux/obj/</BaseIntermediateOutputPath>
+    <MSBuildProjectExtensionsPath>Build/Linux/obj/</MSBuildProjectExtensionsPath>
+    <BaseOutputPath>Build/Linux/bin/</BaseOutputPath>
+  </PropertyGroup>
+  <PropertyGroup Condition="$([MSBuild]::IsOSPlatform('OSX'))">
+    <BaseIntermediateOutputPath>Build/macOS/obj/</BaseIntermediateOutputPath>
+    <MSBuildProjectExtensionsPath>Build/macOS/obj/</MSBuildProjectExtensionsPath>
+    <BaseOutputPath>Build/macOS/bin/</BaseOutputPath>
+  </PropertyGroup>
+</Project>