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

.gitignore

@@ -88,6 +88,9 @@ local.properties
 # Typically, this file would be tracked if it contains build/dependency configurations:
 #.project
 
+# Eclipse and Buildship create project descriptors during import.
+**/.project
+
 # PMD plugin conf
 .pmd
 
@@ -109,3 +112,21 @@ gradle-app.setting
 
 # Gradle task-name cache
 .gradletasknamecache
+
+##---------------------------------------------------------------------------------------- Python tooling
+__pycache__/
+*.py[cod]
+.pytest_cache/
+.ruff_cache/
+.mypy_cache/
+.coverage
+.coverage.*
+htmlcov/
+
+# Workspace-local Rust/Python build and test scratch directories.
+/.cargo-target/
+/pytest-of-*/
+
+# tempfile.NamedTemporaryFile-style dictionary scratch files must not survive
+# as repository candidates when a process is interrupted.
+/tmp*.gz