✅ test(cli): harden startup coverage

lsp-server/test/CMakeLists.txt

@@ -57,6 +57,6 @@ if(BUILD_TESTS)
         ${CMAKE_CURRENT_LIST_DIR}/test_cli_startup.py
         --server $<TARGET_FILE:tsl-server>)
   else()
-    message(WARNING "python3 not found; skipping test_lsp_json registration")
+    message(WARNING "python3 not found; skipping test_lsp_json and test_cli_startup registration")
   endif()
 endif()

lsp-server/test/test_cli_startup.py

@@ -16,6 +16,7 @@ def run_server(*arguments: str) -> subprocess.CompletedProcess[bytes]:
         input=b"",
         capture_output=True,
         check=False,
+        timeout=5,
     )