research: karman reproduce takes explicit model/norm paths; no bytecode written into DynamisLab

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

research/karman_reproduce/run.py

@@ -18,8 +18,9 @@ legacy_test (the executor behind the Legacy rerun), not f2f88c phase3:
 Output (--out, outside the checkout): signals.npz with sensors (N,6), forces
 (N,6), actions (N,3) in the f2f88c phase3 layout, so its comparator applies.
 
-    PYTHONPATH=src python research/karman_reproduce/run.py --dynamis /path/to/DynamisLab \\
+    PYTHONPATH=src python research/karman_reproduce/run.py --dynamis DYN --model .../d1a3o12_re100.zip \\
-        --config /path/to/config_lbm_pinball_legacy_compat.json --out /tmp/... [--device 0]
+        --norm .../karman_re100/norm.json --config .../config_lbm_pinball_legacy_compat.json \\
+        --out /tmp/new-dir [--device 1]
 """
 from __future__ import annotations
 
@@ -44,7 +45,9 @@ def git_head(path):
 
 def main():
     ap = argparse.ArgumentParser()
-    ap.add_argument("--dynamis", required=True, help="DynamisLab checkout (read-only)")
+    ap.add_argument("--dynamis", required=True, help="DynamisLab checkout (imported read-only)")
+    ap.add_argument("--model", required=True, help="frozen d1a3o12_re100.zip")
+    ap.add_argument("--norm", required=True, help="frozen karman_re100 norm.json")
     ap.add_argument("--config", required=True)
     ap.add_argument("--out", required=True)
     ap.add_argument("--device", type=int, default=0)
@@ -55,12 +58,13 @@ def main():
         raise SystemExit("--out must be outside the checkout")
     os.makedirs(args.out, exist_ok=True)
 
+    sys.dont_write_bytecode = True  # import only: write nothing into the DynamisLab tree
     sys.path.insert(0, os.path.join(args.dynamis, "src"))
-    from drl_pinball.legacy_test.core.model_loader import load_model, model_path
+    from stable_baselines3 import PPO
+    from drl_pinball.legacy_test.core.model_loader import _dummy_env
     from drl_pinball.legacy_test.runtime import load_policy_norm, policy_observation
-    norm_path = os.path.join(args.dynamis, "src", "SR_analysis", "data", "karman", "karman_re100",
+    model = PPO.load(args.model, env=_dummy_env(12), device="cpu")
-                             "norm.json")
+    norm = load_policy_norm(args.norm)
-    model, norm = load_model("d1a3o12_re100"), load_policy_norm(norm_path)
 
     from CelerisLab.simulation import Simulation
     sim = Simulation(args.config, device_id=args.device)
@@ -97,8 +101,8 @@ def main():
                             forces=forces, actions=actions)
         with open(os.path.join(args.out, "case.json"), "w") as fh:
             json.dump(dict(celeris=git_head(here), dynamis=git_head(args.dynamis),
-                           config=os.path.realpath(args.config), model=model_path("d1a3o12_re100"),
+                           config=os.path.realpath(args.config), model=os.path.realpath(args.model),
-                           norm=norm_path, warmup=WARMUP, interval=SI, intervals=args.intervals,
+                           norm=os.path.realpath(args.norm), warmup=WARMUP, interval=SI, intervals=args.intervals,
                            probe_cells=cells), fh, indent=1)
     finally:
         sim.close()