fix: ruff findings

tests/test_issue_80.py

@@ -8,7 +8,6 @@ Covers:
   - AC80-5: Theme roles for graph rendering
   - AC80-6: Headless interaction tests with temporary user config
 """
-import json
 import os
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
@@ -21,15 +20,12 @@ sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
 from fenris.store import init_store
 from fenris.preferences import (
-    load_preferences,
     save_preferences,
-    get_preference_path,
 )
-from fenris.themes import get_theme, get_graph_colors, THEME_NAMES
+from fenris.themes import get_graph_colors, THEME_NAMES
 from fenris.status_composition import (
     StatusState,
     compose_status,
-    render_status_tui,
 )
 
 
@@ -100,7 +96,7 @@ class TestPresetLoading:
         config_home = _make_prefs_dir(tmp_path)
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 # Theme should be fenris-amber
                 assert app.theme == "fenris-chalktone"
 
@@ -113,7 +109,7 @@ class TestPresetLoading:
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             save_preferences(theme="nord", reduced_motion=False)
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 assert app.theme == "fenris-nord"
 
     @pytest.mark.asyncio
@@ -125,20 +121,19 @@ class TestPresetLoading:
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             save_preferences(theme="high_contrast", reduced_motion=False)
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 assert app.theme == "fenris-high-contrast"
 
     @pytest.mark.asyncio
     async def test_tui_applies_reduced_motion_from_prefs(self, tmp_path):
         """TUI respects reduced_motion preference."""
         from fenris.tui import FenrisTuiApp
-        from fenris.status_composition import compose_status
 
         config_home = _make_prefs_dir(tmp_path)
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             save_preferences(theme="amber", reduced_motion=True)
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 # The app should have reduced_motion set
                 assert app._reduced_motion is True
 
@@ -237,7 +232,7 @@ class TestPersistence:
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             # First run: change theme via preferences API
             app1 = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app1.run_test() as pilot:
+            async with app1.run_test():
                 save_preferences(theme="nord", reduced_motion=False)
                 app1._current_theme_name = "nord"
                 app1.theme = "fenris-nord"
@@ -246,7 +241,7 @@ class TestPersistence:
 
             # Second run: theme should persist
             app2 = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app2.run_test() as pilot:
+            async with app2.run_test():
                 assert app2.theme == theme_after
 
     @pytest.mark.asyncio
@@ -334,7 +329,7 @@ class TestReducedMotion:
         config_home = _make_prefs_dir(tmp_path)
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 # The app should check for reduced motion on mount
                 assert hasattr(app, '_reduced_motion')
 
@@ -380,7 +375,7 @@ class TestSafePersistence:
 
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 # TUI should start with default theme
                 assert app.theme == "fenris-chalktone"
                 # Dashboard should be functional
@@ -399,7 +394,7 @@ class TestSafePersistence:
 
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 # TUI should start without crash
                 assert app.theme in ("fenris-chalktone", "fenris-amber", "fenris-nord", "fenris-high-contrast")