refactor: drop sixteen unused imports

scripts/dumpcatalog.py

@@ -6,7 +6,6 @@ opinion on provenance, never an authority: the emulator source is."""
 from __future__ import annotations
 
 import json
-import os
 from pathlib import Path
 
 from artifacts import write_if_changed

scripts/generate_site.py

@@ -26,7 +26,6 @@ import urllib.error
 import urllib.parse
 import urllib.request
 from collections.abc import Callable
-from concurrent.futures import ThreadPoolExecutor
 from datetime import datetime, timezone
 from pathlib import Path
 
@@ -45,7 +44,6 @@ from common import (
     resolve_local_file,
     resolve_platform_cores,
     unique_emulator_profiles,
-    write_if_changed as _write_artifact,
     yaml_load,
 )
 from cross_reference import FileConsumers
@@ -64,10 +62,8 @@ from generate_readme import (
     extract_targets,
     release_totals,
 )
-from profile_sync import source_ref_values, split_source_ref
 from provenance_report import build_report, distinct_missing
 import release_record
-import upstream
 
 DOCS_DIR = "docs"
 SITE_NAME = "RetroBIOS"
@@ -2794,7 +2790,6 @@ def generate_gap_analysis(
     2. Problem files -- missing, untested, hash mismatch
     3. Core complement -- emulator files not declared by any platform
     """
-    from cross_reference import cross_reference as run_cross_reference
 
     from common import resolve_platform_cores
 

scripts/hashing.py

@@ -6,7 +6,6 @@ frontends check against."""
 from __future__ import annotations
 
 import hashlib
-import os
 import zipfile
 import zlib
 from pathlib import Path

scripts/packverify.py

@@ -560,7 +560,6 @@ def verify_pack_against_platform(
     Returns ``(all_ok, checked, present, errors, baseline_checked,
     baseline_present, core_checked, core_present, baseline_excluded)``.
     """
-    from collections import Counter
 
     config = load_platform_config(platform_name, platforms_dir)
     base_dest = config.get("base_destination", "")

scripts/profile_sync.py

@@ -10,7 +10,6 @@ from __future__ import annotations
 
 import argparse
 import bisect
-import contextlib
 import difflib
 import itertools
 import json

scripts/torrentzip.py

@@ -25,7 +25,6 @@ from __future__ import annotations
 import argparse
 import hashlib
 import struct
-import sys
 import zipfile
 import zlib
 from pathlib import Path