Add PR NVIDIA#1731 to release/1.4.1-notes.rst

Author: rwgk

cuda_pathfinder/docs/source/release/1.4.1-notes.rst

@@ -11,6 +11,14 @@ Released on Mar 6, 2026
 Highlights
 ----------
 
+* Add CTK canary fallback for header discovery. When CUDA headers cannot be
+  found via site-packages, Conda, or ``CUDA_HOME``/``CUDA_PATH``, the system
+  now attempts to discover the CTK root via canary probing (using a
+  system-loaded ``cudart`` library path) and searches the CTK include layout
+  from that root. This improves header discovery in standard and non-standard
+  CTK installations, including containerized environments.
+  (`PR #1731 <https://github.com/NVIDIA/cuda-python/pull/1731>`_)
+
 * Add support for loading CUPTI (CUDA Profiling Tools Interface) dynamic libs
   via ``load_nvidia_dynamic_lib("cupti")`` on Linux and Windows. CUPTI libraries
   are discovered in site-packages (CUDA 12 and 13), Conda environments, and