[gemini] feat: add coverage and duration strictness to pytest (#934) (#1140)

Co-authored-by: Google Gemini <gemini@hermes.local>
Co-committed-by: Google Gemini <gemini@hermes.local>

tests/unit/test_retrain_loop.py

@@ -9,19 +9,15 @@ Refs: #1105
 from __future__ import annotations
 
 import json
-import tempfile
 from datetime import UTC, datetime, timedelta
 from pathlib import Path
 
-import pytest
-
 from timmy_automations.retrain.quality_filter import QualityFilter, TrajectoryQuality
 from timmy_automations.retrain.retrain import RetrainOrchestrator
 from timmy_automations.retrain.training_dataset import TrainingDataset
 from timmy_automations.retrain.training_log import CycleMetrics, TrainingLog
 from timmy_automations.retrain.trajectory_exporter import Trajectory, TrajectoryExporter
 
-
 # ── Fixtures ─────────────────────────────────────────────────────────────────
 
 
@@ -382,7 +378,7 @@ class TestTrainingDataset:
         ds = TrainingDataset(repo_root=tmp_path)
         ds.append([self._make_result()], "2026-W12")
         with open(ds.dataset_path) as f:
-            lines = [l.strip() for l in f if l.strip()]
+            lines = [line.strip() for line in f if line.strip()]
         assert len(lines) == 1
         record = json.loads(lines[0])
         assert "messages" in record