chore: remove module-level comments and docstrings from assets package

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

app/assets/database/queries/__init__.py

@@ -1,6 +1,3 @@
-# Re-export public API from query modules
-# Pure atomic database queries only - no business logic or orchestration
-
 from app.assets.database.queries.asset import (
     asset_exists_by_hash,
     bulk_insert_assets,

app/assets/database/queries/asset.py

@@ -1,4 +1,3 @@
-
 import sqlalchemy as sa
 from sqlalchemy import select
 from sqlalchemy.dialects import sqlite

app/assets/database/queries/asset_info.py

@@ -1,9 +1,3 @@
-"""
-Pure atomic database queries for AssetInfo operations.
-
-This module contains only atomic DB operations - no business logic,
-no filesystem operations, no orchestration across multiple tables.
-"""
 from collections import defaultdict
 from datetime import datetime
 from decimal import Decimal