fix: address review findings for unused variables and redundant import

- Remove redundant logging import in test_hook_utils.py
- Use types_found variable in assertion (test_session_analyzer.py)
- Add assertion for result variable (test_session_analyzer.py)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: zircote

tests/test_hook_utils.py

@@ -48,8 +48,6 @@ def reset_hook_loggers() -> Iterator[None]:
     Also clears handlers from the underlying Python loggers to prevent
     cross-test pollution from the global logging.Logger cache.
     """
-    import logging
-
     from git_notes_memory.hooks import hook_utils
 
     def _clear_hook_loggers() -> None:

tests/test_session_analyzer.py

@@ -784,6 +784,7 @@ def test_analyzes_raw_string_content(
 
         result = analyzer.analyze_content("I decided to use PostgreSQL for storage")
         assert mock_signal_detector.detect.called
+        assert isinstance(result, list)  # Verify result type
 
     def test_returns_empty_for_empty_content(self, analyzer: SessionAnalyzer) -> None:
         """Test returns empty list for empty content."""
@@ -1047,8 +1048,9 @@ def test_full_analysis_workflow_jsonl(self, tmp_path: Path) -> None:
         result = analyzer.analyze(str(transcript), check_novelty=False)
 
         # Should detect decision and learning signals
-        types_found = {s.type for s in result}
         assert len(result) >= 1
+        types_found = {s.type for s in result}
+        assert types_found  # Verify types were extracted
 
     def test_full_analysis_workflow_plain_text(self, tmp_path: Path) -> None:
         """Test full analysis workflow with plain text transcript."""