Replace trajectory audit with isolated prefix scoring

src/swe_data_processing/cli.py

@@ -154,7 +154,7 @@ def command_classify(args: argparse.Namespace) -> int:
 
 
 def command_audit(args: argparse.Namespace) -> int:
-    """Score educational process quality and locate causal truncation points."""
+    """Locate a safe boundary, materialize its prefix, then score the prefix."""
 
     settings = Settings.from_env()
     with GLMClient(settings) as client:
@@ -165,7 +165,7 @@ def command_audit(args: argparse.Namespace) -> int:
             limit=args.limit,
             resume=args.resume,
             workers=args.workers,
-            stage_name="trajectory_audit",
+            stage_name="two_call_audit",
             processor=lambda record: audit_trajectory(record, client),
         )
 
@@ -324,7 +324,7 @@ def build_parser() -> argparse.ArgumentParser:
     classify.set_defaults(func=command_classify)
 
     audit = subparsers.add_parser(
-        "audit", help="Score process quality and locate causal truncation points"
+        "audit", help="Locate a safe boundary, then score only the retained prefix"
     )
     _add_stream_arguments(audit)
     audit.set_defaults(func=command_audit)