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

docs/fast-track.md

@@ -1,10 +1,13 @@
-# Fast Track
+# Java Fast Track
 
 This page is the shortest path from an empty Java project to a working Radixor stemmer.
 It deliberately uses an external model artifact and the preferred compiled-command runtime API, so the
 first result does not require writing a dictionary, running the CLI compiler, or understanding
 reduction internals.
 
+For the native Python package, start with the [Python Fast Track](python/fast-track.md)
+instead; Python does not use Maven model artifacts or the Java loader API.
+
 Use this page when the goal is:
 
 - add the dependency,