Complete C# server cutover

.github/workflows/csharp-server.yml

@@ -5,35 +5,60 @@ on:
     branches:
       - rewrite/csharp-server
     paths:
-      - "server/**/*.cs"
-      - "server/**/*.csproj"
+      - "server/**"
+      - "src/ServerProcess.*"
+      - "CMakeLists.txt"
+      - "cmake/stage_server.cmake"
+      - "build.bat"
+      - "deploy.bat"
+      - "check-setup.bat"
       - ".github/workflows/csharp-server.yml"
   workflow_dispatch:
 
 jobs:
   build-and-test:
     runs-on: [self-hosted, Linux, X64]
-    defaults:
-      run:
-        working-directory: server
     steps:
       - uses: actions/checkout@v4
 
+      - name: Reject Python files
+        shell: bash
+        run: |
+          if find . -type f -name '*.py' -print -quit | grep -q .; then
+            echo "Python files are not allowed in CO-SERVER"
+            find . -type f -name '*.py' -print
+            exit 1
+          fi
+          if find server -maxdepth 1 -type f -name 'requirements*.txt' -print -quit | grep -q .; then
+            echo "Python requirements files are not allowed in CO-SERVER"
+            find server -maxdepth 1 -type f -name 'requirements*.txt' -print
+            exit 1
+          fi
+
       - uses: actions/setup-dotnet@v4
         with:
           dotnet-version: "8.0.x"
 
-      - name: Report .NET
-        run: dotnet --info
-
       - name: Build C# server
+        working-directory: server
         run: dotnet build CommonwealthOnline.Server.csproj -c Release --nologo
 
       - name: Run C# server tests
+        working-directory: server
         run: dotnet run --project tests/CommonwealthOnline.Server.Tests.csproj -c Release --no-restore
 
+      - name: Check Linux scripts
+        working-directory: server
+        run: |
+          chmod +x start.sh fix-port.sh scripts/linux_compat_checks.sh
+          bash -n start.sh
+          bash -n fix-port.sh
+          bash -n scripts/linux_compat_checks.sh
+
       - name: Publish Linux server
+        working-directory: server
         run: dotnet publish CommonwealthOnline.Server.csproj -c Release -r linux-x64 --self-contained false -o publish/linux-x64 --nologo
 
       - name: Verify published entrypoint
+        working-directory: server
         run: test -f publish/linux-x64/CommonwealthOnline.Server.dll