fix: ruff findings

tests/test_issue_92.py

@@ -10,7 +10,6 @@ Covers:
 - AC92-7: Keyboard actions verified from normal launch with headless driver
 - AC92-8: Equivalent clickable actions at 80x24 and constrained widths
 """
-import sqlite3
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
 from unittest.mock import patch
@@ -111,7 +110,6 @@ def _make_app(tmp_path, clock=None):
     """
     if clock is None:
         clock = _clock()
-    from unittest.mock import patch
     import fenris.tui as tui_mod
     from datetime import datetime as _real_datetime