Enable JAX compilation for streaming tasks

The StreamInterpreter was created without use_jax=True, so the JAX
compiler was never activated for production rendering. Desktop testing
had this enabled but the celery task path did not.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

l1/tasks/streaming.py

@@ -354,7 +354,7 @@ def run_stream(
                 checkpoint = None
 
         # Create interpreter (pass actor_id for friendly name resolution)
-        interp = StreamInterpreter(str(recipe_path), actor_id=actor_id)
+        interp = StreamInterpreter(str(recipe_path), actor_id=actor_id, use_jax=True)
 
         # Set primitive library directory explicitly
         interp.primitive_lib_dir = sexp_effects_dir / "primitive_libs"