# legacy_test: Systematic validation of legacy PPO models using LegacyCelerisLab.
#
# Track A of the reproduce plan. Each test script:
#   1. Builds the correct LegacyCelerisLab env for a scene
#   2. Loads the pre-trained PPO model
#   3. Runs deterministic inference
#   4. Compares output against SR_analysis reference data
