diff --git a/app/assets/database/queries/cache_state.py b/app/assets/database/queries/cache_state.py
index 1da3c4430..6ed58717a 100644
--- a/app/assets/database/queries/cache_state.py
+++ b/app/assets/database/queries/cache_state.py
@@ -39,12 +39,12 @@ def pick_best_live_path(states: Sequence[AssetCacheState]) -> str:
 
 def prune_orphaned_assets(session: Session, roots: tuple[str, ...], prefixes_for_root_fn) -> int:
     """Prune cache states outside configured prefixes, then delete orphaned seed assets.
-    
+
     Args:
         session: Database session
         roots: Tuple of root types to prune
         prefixes_for_root_fn: Function to get prefixes for a root type
-        
+
     Returns:
         Number of orphaned assets deleted
     """
@@ -91,7 +91,7 @@ def fast_db_consistency_pass(
       - Optionally return surviving absolute paths
     """
     import contextlib
-    
+
     prefixes = prefixes_for_root_fn(root)
     if not prefixes:
         return set() if collect_existing_paths else None
diff --git a/tests-unit/assets_test/queries/test_asset_info.py b/tests-unit/assets_test/queries/test_asset_info.py
index 18699da5c..fdcbd489e 100644
--- a/tests-unit/assets_test/queries/test_asset_info.py
+++ b/tests-unit/assets_test/queries/test_asset_info.py
@@ -1,7 +1,7 @@
 import pytest
 from sqlalchemy.orm import Session
 
-from app.assets.database.models import Asset, AssetInfo, AssetInfoMeta, AssetInfoTag, Tag
+from app.assets.database.models import Asset, AssetInfo
 from app.assets.database.queries import (
     asset_info_exists_for_asset_id,
     get_asset_info_by_id,
@@ -116,7 +116,7 @@ class TestListAssetInfosPage:
     def test_include_tags_filter(self, session: Session):
         asset = _make_asset(session, "hash1")
         info1 = _make_asset_info(session, asset, name="tagged")
-        info2 = _make_asset_info(session, asset, name="untagged")
+        _make_asset_info(session, asset, name="untagged")
         ensure_tags_exist(session, ["wanted"])
         add_tags_to_asset_info(session, asset_info_id=info1.id, tags=["wanted"])
         session.commit()
@@ -127,10 +127,10 @@ class TestListAssetInfosPage:
 
     def test_exclude_tags_filter(self, session: Session):
         asset = _make_asset(session, "hash1")
-        info1 = _make_asset_info(session, asset, name="keep")
-        info2 = _make_asset_info(session, asset, name="exclude")
+        _make_asset_info(session, asset, name="keep")
+        info_exclude = _make_asset_info(session, asset, name="exclude")
         ensure_tags_exist(session, ["bad"])
-        add_tags_to_asset_info(session, asset_info_id=info2.id, tags=["bad"])
+        add_tags_to_asset_info(session, asset_info_id=info_exclude.id, tags=["bad"])
         session.commit()
 
         infos, _, total = list_asset_infos_page(session, exclude_tags=["bad"])
diff --git a/tests-unit/assets_test/queries/test_cache_state.py b/tests-unit/assets_test/queries/test_cache_state.py
index f5543523f..6e7d768eb 100644
--- a/tests-unit/assets_test/queries/test_cache_state.py
+++ b/tests-unit/assets_test/queries/test_cache_state.py
@@ -1,17 +1,11 @@
 """Tests for cache_state query functions."""
-import os
-import tempfile
-from unittest.mock import patch
-
-import pytest
 from sqlalchemy.orm import Session
 
-from app.assets.database.models import Asset, AssetCacheState, AssetInfo
+from app.assets.database.models import Asset, AssetCacheState
 from app.assets.database.queries import (
     list_cache_states_by_asset_id,
     pick_best_live_path,
 )
-from app.assets.helpers import utcnow
 
 
 def _make_asset(session: Session, hash_val: str | None = None, size: int = 1024) -> Asset:
diff --git a/tests-unit/assets_test/queries/test_metadata.py b/tests-unit/assets_test/queries/test_metadata.py
index 9e0fcfc65..176a6c216 100644
--- a/tests-unit/assets_test/queries/test_metadata.py
+++ b/tests-unit/assets_test/queries/test_metadata.py
@@ -1,6 +1,4 @@
 """Tests for metadata filtering logic in asset_info queries."""
-import pytest
-from decimal import Decimal
 from sqlalchemy.orm import Session
 
 from app.assets.database.models import Asset, AssetInfo, AssetInfoMeta