Rename Python extension module from pyslicutlet to slicutletlib

- Renamed extension module to follow clearer naming convention
- Benefits: Clear SLICUTLET branding, licensing clarity, no clash with libslicutlet.so
- Updated meson.build: 'pyslicutlet' -> 'slicutletlib'
- Updated slicutletmodule.c: PyInit_pyslicutlet() -> PyInit_slicutletlib()
- Updated __init__.py: from slicutlet.pyslicutlet -> from slicutlet.slicutletlib
- All 355 tests passing

Author: ilayn

.github/workflows/test-matrix.yml

@@ -116,7 +116,7 @@ jobs:
       run: |
         PYTHON_VERSION="${{ matrix.python-version }}"
         PYTHON_VERSION_COMPACT="${PYTHON_VERSION//./}"  # Remove dots: 3.13 -> 313
-        
+
         # Windows uses different install paths than Linux/macOS
         if [[ "$RUNNER_OS" == "Windows" ]]; then
           # Windows installs to build-install/lib/site-packages (no /usr/local prefix)

python/meson.build

@@ -7,8 +7,8 @@ numpy_include_result = run_command(
 )
 incdir_numpy = numpy_include_result.stdout().strip()
 
-pyslicutlet_module = py.extension_module(
-    'pyslicutlet',
+slicutletlib_module = py.extension_module(
+    'slicutletlib',
     'slicutletmodule.c',
     include_directories: [inc_pub, inc_root, inc_src, include_directories(incdir_numpy)],
     link_with: slicutlet_lib,

python/slicutlet/__init__.py

@@ -7,7 +7,7 @@
 Refer to individual function docstrings for usage details.
 """
 
-from slicutlet.pyslicutlet import (
+from slicutlet.slicutletlib import (
     py_ab01nd as ab01nd,
     py_ab04md as ab04md,
     py_ab05md as ab05md,

python/slicutletmodule.c

@@ -1258,6 +1258,6 @@ static struct PyModuleDef pyslicutlet_module = {
     .m_slots = module_slots,
 };
 
-PyMODINIT_FUNC PyInit_pyslicutlet(void) {
+PyMODINIT_FUNC PyInit_slicutletlib(void) {
     return PyModuleDef_Init(&pyslicutlet_module);
 }