fix: ruff linting errors and add comprehensive test coverage for asset queries

- Fix unused imports in routes.py, asset.py, manager.py, asset_management.py, ingest.py
- Fix whitespace issues in upload.py, asset_info.py, ingest.py
- Fix typo in manager.py (stray character after result["asset"])
- Fix broken import in test_metadata.py (project_kv moved to asset_info.py)
- Add fixture override in queries/conftest.py for unit test isolation

Add 48 new tests covering all previously untested query functions:
- asset.py: upsert_asset, bulk_insert_assets
- cache_state.py: upsert_cache_state, delete_cache_states_outside_prefixes,
  get_orphaned_seed_asset_ids, delete_assets_by_ids, get_cache_states_for_prefixes,
  bulk_set_needs_verify, delete_cache_states_by_ids, delete_orphaned_seed_asset,
  bulk_insert_cache_states_ignore_conflicts, get_cache_states_by_paths_and_asset_ids
- asset_info.py: insert_asset_info, get_or_create_asset_info,
  update_asset_info_timestamps, replace_asset_info_metadata_projection,
  bulk_insert_asset_infos_ignore_conflicts, get_asset_info_ids_by_ids
- tags.py: bulk_insert_tags_and_meta

Total: 119 tests pass (up from 71)

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

app/assets/api/routes.py

@@ -2,7 +2,6 @@ import logging
 import uuid
 import urllib.parse
 import os
-import contextlib
 from aiohttp import web
 
 from pydantic import ValidationError
@@ -20,7 +19,6 @@ from app.assets.api.upload import parse_multipart_upload
 from app.assets.services.scanner import seed_assets
 from typing import Any
 
-import folder_paths
 
 ROUTES = web.RouteTableDef()
 USER_MANAGER: user_manager.UserManager | None = None

app/assets/api/upload.py

@@ -16,7 +16,7 @@ from app.assets.api.schemas_in import ParsedUpload, UploadError
 def validate_hash_format(s: str) -> str:
     """
     Validate and normalize a hash string.
-    
+
     Returns canonical 'blake3:<hex>' or raises UploadError.
     """
     s = s.strip().lower()

app/assets/database/queries/asset.py

@@ -1,4 +1,3 @@
-from typing import Iterable
 
 import sqlalchemy as sa
 from sqlalchemy import select

app/assets/database/queries/asset_info.py

@@ -1,7 +1,7 @@
 """
 Pure atomic database queries for AssetInfo operations.
 
-This module contains only atomic DB operations - no business logic, 
+This module contains only atomic DB operations - no business logic,
 no filesystem operations, no orchestration across multiple tables.
 """
 from collections import defaultdict
@@ -246,7 +246,7 @@ def get_or_create_asset_info(
     )
     if info:
         return info, True
-    
+
     existing = session.execute(
         select(AssetInfo)
         .where(

app/assets/manager.py

@@ -28,9 +28,7 @@ from app.assets.api.upload import _cleanup_temp
 from app.assets.database.queries import (
     asset_exists_by_hash,
     fetch_asset_info_and_asset,
-    fetch_asset_info_asset_and_tags,
     get_asset_by_hash,
-    get_asset_info_by_id,
     get_asset_tags,
     list_asset_infos_page,
     list_cache_states_by_asset_id,
@@ -417,7 +415,7 @@ def set_asset_preview(
         owner_id=owner_id,
     )
     info = result["info"]
-    asset = result["asset"]T
+    asset = result["asset"]
     tags = result["tags"]
 
     return schemas_out.AssetDetail(

app/assets/services/asset_management.py

@@ -18,7 +18,6 @@ from app.assets.services.path_utils import compute_relative_filename
 from app.assets.database.queries import (
     asset_info_exists_for_asset_id,
     delete_asset_info_by_id,
-    fetch_asset_info_and_asset,
     fetch_asset_info_asset_and_tags,
     get_asset_info_by_id,
     list_cache_states_by_asset_id,

app/assets/services/ingest.py

@@ -13,7 +13,7 @@ from sqlalchemy import select
 
 from app.assets.database.models import Asset, Tag
 from app.database.db import create_session
-from app.assets.helpers import normalize_tags, pick_best_live_path, utcnow
+from app.assets.helpers import normalize_tags, pick_best_live_path
 from app.assets.services.path_utils import compute_relative_filename
 from app.assets.database.queries import (
     get_asset_by_hash,
@@ -26,7 +26,6 @@ from app.assets.database.queries import (
     upsert_asset,
     upsert_cache_state,
     add_tags_to_asset_info,
-    ensure_tags_exist,
     get_asset_tags,
 )
 
@@ -147,7 +146,7 @@ def register_existing_asset(
 ) -> dict:
     """
     Create or return existing AssetInfo for an asset that already exists by hash.
-    
+
     Returns dict with asset and info details, or raises ValueError if hash not found.
     """
     with create_session() as session: