build: auto-copy published exes to repo root

After every `dotnet publish -c Release`, the single-file binaries land
in C:\ASTERION\GIT\PS_Launcher\ next to PS_Launcher.sln so they can be
launched directly without digging into bin/Release/.../publish/.

Implemented as an MSBuild AfterTargets="Publish" target on each csproj
(PSLauncher.App, PSLauncher.Updater) using $(MSBuildThisFileDirectory)
to resolve the repo root portably. Condition='Release' so debug builds
don't pollute the root.

.gitignore covers /PSLauncher.exe and /PSLauncher.Updater.exe so the
committed tree stays clean.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

@@ -35,3 +35,7 @@ server/builds/*
 
 # Plans
 .claude/
+
+# Binaires copiés par le post-publish à la racine du repo
+/PSLauncher.exe
+/PSLauncher.Updater.exe

src/PSLauncher.App/PSLauncher.App.csproj

@@ -49,4 +49,19 @@
     <Resource Include="Resources\pirulen.otf" />
   </ItemGroup>
 
+  <!-- Après chaque `dotnet publish -c Release`, copie le single-file exe à la racine du repo
+       (C:\ASTERION\GIT\PS_Launcher\PSLauncher.exe) pour avoir un binaire prêt à tester
+       sans aller chercher dans bin\Release\... -->
+  <Target Name="CopyPublishedToRepoRoot" AfterTargets="Publish"
+          Condition=" '$(Configuration)' == 'Release' ">
+    <PropertyGroup>
+      <RepoRoot>$([System.IO.Path]::GetFullPath('$(MSBuildThisFileDirectory)..\..\'))</RepoRoot>
+    </PropertyGroup>
+    <Copy SourceFiles="$(PublishDir)$(AssemblyName).exe"
+          DestinationFolder="$(RepoRoot)"
+          SkipUnchangedFiles="false"
+          OverwriteReadOnlyFiles="true" />
+    <Message Importance="high" Text="Copied $(AssemblyName).exe to $(RepoRoot)" />
+  </Target>
+
 </Project>

src/PSLauncher.Updater/PSLauncher.Updater.csproj

@@ -19,4 +19,18 @@
     <PublishTrimmed>false</PublishTrimmed>
   </PropertyGroup>
 
+  <!-- Copie automatique du single-file Updater à la racine du repo après chaque
+       `dotnet publish -c Release`. -->
+  <Target Name="CopyPublishedToRepoRoot" AfterTargets="Publish"
+          Condition=" '$(Configuration)' == 'Release' ">
+    <PropertyGroup>
+      <RepoRoot>$([System.IO.Path]::GetFullPath('$(MSBuildThisFileDirectory)..\..\'))</RepoRoot>
+    </PropertyGroup>
+    <Copy SourceFiles="$(PublishDir)$(AssemblyName).exe"
+          DestinationFolder="$(RepoRoot)"
+          SkipUnchangedFiles="false"
+          OverwriteReadOnlyFiles="true" />
+    <Message Importance="high" Text="Copied $(AssemblyName).exe to $(RepoRoot)" />
+  </Target>
+
 </Project>