WIP: Gemini Code progress on #936

Automated salvage commit — agent session ended (exit 124).
Work in progress, may need continuation.

tests/scripts/test_export_trajectories.py

@@ -9,10 +9,8 @@ import json
 from pathlib import Path
 
 import pytest
-
 import scripts.export_trajectories as et
 
-
 # ── Fixtures ──────────────────────────────────────────────────────────────────
 
 
@@ -236,7 +234,9 @@ def test_export_training_data_writes_jsonl(simple_session: Path, tmp_path: Path)
     count = et.export_training_data(logs_dir=simple_session, output_path=output)
     assert count == 2
     assert output.exists()
-    lines = [json.loads(l) for l in output.read_text().splitlines() if l.strip()]
+    lines = [
+        json.loads(line) for line in output.read_text().splitlines() if line.strip()
+    ]
     assert len(lines) == 2
     for line in lines:
         assert "messages" in line