Focus project on JAX PPO

.gitignore

@@ -28,8 +28,11 @@ tools/julia/
 .pytest_cache
 .ruff_cache
 
-# Web dependencies and locally exported deployment models
+# Web dependencies and locally exported models. The verified public browser
+# policy below is the one exception: it is deliberately served as a static asset.
 web/node_modules/
 web/*.tsbuildinfo
 web/public/models/*.onnx
 web/public/models/*.json
+!web/public/models/jax-ppo.onnx
+!web/public/models/jax-ppo.json