feat(python): add native distribution and release infrastructure

- add the Rust-backed Python API with PyStemmer compatibility
- distribute standard compiled models as a separate Python package
- generate model artifacts during builds instead of storing them in Git
- add GitHub release and Pages-backed package index workflows
- add Python tests, benchmarks, documentation, and Gradle integration
- refresh the documentation site, branding, and language benchmarks

python/models-standard/LICENSE-MODEL-DATA.txt

@@ -0,0 +1,12 @@
+Radixor Standard Model Data License
+
+The model data in this distribution, including Radixor's protectable
+selection, transformation, metadata, and packaging contributions, is licensed
+under Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0):
+
+https://creativecommons.org/licenses/by-sa/3.0/
+
+Each model's attribution, upstream provenance, and license details are recorded
+in radixor_models_standard/notices/<model-id>/NOTICE-model-data.txt. Those
+notices form part of this distribution and must be retained with redistributed
+model data.

python/models-standard/MANIFEST.in

@@ -0,0 +1,4 @@
+include LICENSE-MODEL-DATA.txt
+include README.md
+recursive-include radixor_models_standard *.json *.rxc *.txt
+global-exclude stemmer.gz *.gz __pycache__ *.py[cod]

python/models-standard/README.md

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+# Radixor standard models
+
+This pure-Python distribution supplies Radixor's 20 precompiled standard
+language models. It is installed automatically by `pip install radixor`; users
+normally do not import it directly.
+
+The catalog version is `2026.1`. Individual model versions recorded in the
+generated `radixor_models_standard/manifest.json` are currently `1.0.0`. The
+optional Polish PoliMorf model is intentionally not part of the standard
+catalog.
+The first Python model distribution is released as `1.0.0`; its version is
+independent of both the catalog identity and the individual model versions.
+The checked-in descriptors use `0.0.0` as a deliberate non-release placeholder.
+The release workflow creates an isolated project below `build/`, injects the Git
+tag version, and deterministically compiles all model resources there.
+
+Only gzip-compressed Radixor v7 (`.rxc`) tries are shipped. They are release
+artifacts, not checked-in repository files. Canonical textual dictionaries
+remain in the Radixor source repository and are not included in this wheel or
+source distribution. Model data is licensed under CC BY-SA 3.0; see
+`LICENSE-MODEL-DATA.txt` and the generated per-model notices.
+
+The checked-out directory is intentionally only a packaging skeleton and is
+not directly buildable as the complete data distribution. From the repository
+root, use `./gradlew pythonBuildStandardModels`; the generated project and its
+wheel/sdist are written below `build/python/`.

python/models-standard/pyproject.toml

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+[build-system]
+requires = ["setuptools>=77"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "radixor-models-standard"
+version = "0.0.0"
+requires-python = ">=3.9"
+description = "Precompiled standard language models for Radixor"
+readme = "README.md"
+license = "CC-BY-SA-3.0"
+license-files = ["LICENSE-MODEL-DATA.txt"]
+keywords = ["stemming", "nlp", "linguistics", "model-data"]
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "Topic :: Text Processing :: Linguistic",
+]
+
+[tool.setuptools]
+include-package-data = true
+
+[tool.setuptools.packages.find]
+where = ["."]
+include = ["radixor_models_standard*"]
+
+[tool.setuptools.package-data]
+radixor_models_standard = ["manifest.json"]
+"radixor_models_standard.models" = ["*.rxc"]
+"radixor_models_standard.notices" = ["*/*.txt"]

python/models-standard/radixor_models_standard/__init__.py

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+###############################################################################
+# Copyright (C) 2026, Leo Galambos
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+#    this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+###############################################################################
+
+"""Installed resources for the Radixor 2026.1 standard model catalog."""
+
+CATALOG_VERSION = "2026.1"
+__version__ = "0.0.0"
+
+__all__ = ["CATALOG_VERSION"]

python/models-standard/radixor_models_standard/models/__init__.py

@@ -0,0 +1,32 @@
+###############################################################################
+# Copyright (C) 2026, Leo Galambos
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+#    this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+###############################################################################
+
+"""Compiled model resources; not a public Python API."""

python/models-standard/radixor_models_standard/notices/__init__.py

@@ -0,0 +1,32 @@
+###############################################################################
+# Copyright (C) 2026, Leo Galambos
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+#    this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+###############################################################################
+
+"""Per-model attribution and license notice resources."""