Complete C# server cutover

.gitignore

@@ -1,6 +1,12 @@
 # Build outputs
 build/
 out/
+publish/
+server/bin/
+server/obj/
+server/publish/
+server/tests/bin/
+server/tests/obj/
 cmake-build-*/
 *.exe
 *.dll
@@ -8,6 +14,8 @@ cmake-build-*/
 *.obj
 *.o
 *.a
+*.so
+*.dylib
 *.pdb
 *.ilk
 *.exp
@@ -34,17 +42,10 @@ ui_*.h
 *.rcc
 qrc_*.cpp
 
-# Python (source + staged server copies)
-__pycache__/
-*.py[cod]
-*$py.class
-.pytest_cache/
-.mypy_cache/
-.ruff_cache/
-.venv/
-.venv-ci/
-venv/
-env/
+# .NET generated
+*.deps.json
+*.runtimeconfig.json
+TestResults/
 
 # Local / runtime artifacts
 *.log