pathfinder: add cudla header lookup support

Register cudla as a CTK header so locate_nvidia_header_directory() can find
cudla.h in the standard cu13 wheel include directory. In strict header tests,
skip cudla on hosts where libnvcudla.so is not available so Tegra setups still
exercise the real path without making unsupported hosts fail.

Made-with: Cursor

Author: rwgk

cuda_pathfinder/cuda/pathfinder/_headers/header_descriptor_catalog.py

@@ -134,6 +134,13 @@ class HeaderDescriptorSpec:
         site_packages_dirs=("nvidia/cu13/include", "nvidia/cuda_nvcc/nvvm/include"),
         anchor_include_rel_dirs=("nvvm/include",),
     ),
+    HeaderDescriptorSpec(
+        name="cudla",
+        packaged_with="ctk",
+        header_basename="cudla.h",
+        site_packages_dirs=("nvidia/cu13/include",),
+        available_on_windows=False,
+    ),
     # -----------------------------------------------------------------------
     # Third-party / separately packaged headers
     # -----------------------------------------------------------------------

cuda_pathfinder/tests/test_find_nvidia_headers.py

@@ -21,6 +21,7 @@
 import pytest
 
 import cuda.pathfinder._headers.find_nvidia_headers as find_nvidia_headers_module
+from conftest import skip_if_missing_libnvcudla_so
 from cuda.pathfinder import LocatedHeaderDir, find_nvidia_header_directory, locate_nvidia_header_directory
 from cuda.pathfinder._dynamic_libs.load_nvidia_dynamic_lib import (
     _resolve_system_loaded_abs_path_in_subprocess,
@@ -158,6 +159,8 @@ def test_locate_ctk_headers(info_summary_append, libname):
         h_filename = SUPPORTED_HEADERS_CTK[libname]
         assert os.path.isfile(os.path.join(hdr_dir, h_filename))
     if STRICTNESS == "all_must_work":
+        if libname == "cudla":
+            skip_if_missing_libnvcudla_so(libname, timeout=30)
         assert hdr_dir is not None