style: apply safe ruff auto-fixes and exempt startup late imports

Run `ruff check app tests scripts --fix` with the configured rule set
(E4/E7/E9/F/I): import sorting (I001), f-strings without placeholders
(F541), lambda/variable/unused-import cleanups that ruff marks safe.
Nine files whose only ruff debt sits next to pre-existing pylint
import-resolution errors (lazy exports, sys.path script imports) or
whose "unused" imports are reached through attribute access by tests are
left untouched so the changed-file pylint gate and the benchmark tests
stay green; their diagnostics remain in the baseline.

app/startup/lifecycle/__init__.py and app/main.py import business
modules after cache composition, import-path and stdio setup on purpose
(the source comments document the contract), so declare E402
per-file-ignores for them instead of adding per-line noqa.

Ruff ratchet watermark drops from 498 to 100; sync the baseline fixture
and the optimization checklist figure.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

scripts/architecture/task_ownership.py

@@ -6,7 +6,6 @@ import ast
 from dataclasses import dataclass, field
 from pathlib import Path
 
-
 PROJECT_ROOT = Path(__file__).resolve().parents[2]
 TASK_METHODS = frozenset(
     {"create", "create_sync", "register", "submit_threadsafe"}

scripts/benchmark_indexer_rust.py

@@ -4,8 +4,8 @@ Benchmark SiteSpider indexer parsing with real MoviePilot-Build site configs.
 """
 
 import argparse
-import copy
 import contextlib
+import copy
 import io
 import statistics
 import sys

scripts/benchmark_rss_rust.py

@@ -9,10 +9,10 @@ from types import SimpleNamespace
 PROJECT_ROOT = Path(__file__).resolve().parents[1]
 sys.path.insert(0, str(PROJECT_ROOT))
 
+from app.adapters.network.http import RequestUtils
+from app.adapters.system import rust as rust_accel
 from app.application import rss as rss_module
 from app.application.rss import RssHelper
-from app.adapters.system import rust as rust_accel
-from app.adapters.network.http import RequestUtils
 
 
 class FakeRequestUtils:

scripts/generate_plugin_market_default.py

@@ -9,7 +9,6 @@ from pathlib import Path
 from typing import Optional
 from urllib.parse import urlparse
 
-
 OFFICIAL_PLUGIN_MARKET = "https://github.com/jxxghp/MoviePilot-Plugins"
 PLUGIN_MARKET_WIKI_START = "<!-- plugin-market-repos:start -->"
 PLUGIN_MARKET_WIKI_END = "<!-- plugin-market-repos:end -->"

scripts/local_setup.py

@@ -26,7 +26,6 @@ from pathlib import Path
 from tempfile import TemporaryDirectory
 from typing import Any, Optional
 
-
 ROOT = Path(__file__).resolve().parents[1]
 LEGACY_CONFIG_DIR = ROOT / "config"
 SITE_RESOURCE_DIR = ROOT / "app" / "application" / "site"
@@ -2536,13 +2535,13 @@ def _apply_local_system_config_inner(config_payload: dict[str, Any]) -> None:
         )
         from app.application.configuration import SystemConfigService
         from app.application.directory import normalize_directory_system_config_value
-        from app.schemas.category import ClassificationPolicyState
-        from app.startup.initializers.database import prepare_database
+        from app.db.adapters.transaction import TransactionalWriteRunner
         from app.db.oper.systemconfig import SystemConfigOper
-        from app.schemas.types import SystemConfigKey
         from app.db.session import SessionFactory, async_session_scope
         from app.db.uow import configure_transaction_runners
-        from app.db.adapters.transaction import TransactionalWriteRunner
+        from app.schemas.category import ClassificationPolicyState
+        from app.schemas.types import SystemConfigKey
+        from app.startup.initializers.database import prepare_database
     except ModuleNotFoundError as exc:
         raise RuntimeError(
             "当前环境尚未安装 MoviePilot 运行依赖，请先执行 moviepilot install deps 或 moviepilot setup"
@@ -2725,8 +2724,8 @@ def _ensure_superuser_account_inner() -> None:
 
 
 def _prepare_superuser_password_for_bootstrap() -> Optional[str]:
-    from app.runtime.config import settings
     from app.db.oper.user import UserOper
+    from app.runtime.config import settings
 
     username = str(settings.SUPERUSER or "").strip()
     username_error = _validate_superuser_name(username)
@@ -3960,9 +3959,9 @@ def run_agent_request(
         sys.path.insert(0, str(ROOT))
 
     try:
-        from app.startup.initializers.database import prepare_database
         from app.agent.orchestrator import MoviePilotAgent
         from app.runtime.config import settings
+        from app.startup.initializers.database import prepare_database
     except ModuleNotFoundError as exc:
         raise RuntimeError(
             "当前环境尚未安装 MoviePilot 运行依赖，请先执行 moviepilot install deps 或 moviepilot setup"

scripts/normalize_audit_requirements.py

@@ -7,7 +7,6 @@ import re
 import tomllib
 from pathlib import Path
 
-
 DIRECT_REFERENCE = re.compile(
     r"^(?P<indent>\s*)(?P<name>[A-Za-z0-9_.-]+)\s+@\s+"
     r"(?P<url>\S+)(?P<suffix>.*)$"

scripts/perf/free_threaded_ab.py

@@ -10,7 +10,6 @@ import random
 import re
 import statistics
 import subprocess
-import sys
 import tempfile
 import time
 from datetime import datetime, timezone

scripts/schema/exports.py

@@ -6,7 +6,6 @@ import importlib
 import sys
 from pathlib import Path
 
-
 PROJECT_ROOT = Path(__file__).resolve().parents[2]
 if str(PROJECT_ROOT) not in sys.path:
     sys.path.insert(0, str(PROJECT_ROOT))

scripts/site_adapter_collector.py

@@ -26,7 +26,6 @@ import requests
 import websocket
 from bs4 import BeautifulSoup, Comment, NavigableString, Tag
 
-
 COLLECTOR_VERSION = "1.0.1"
 FORMAT_VERSION = 1
 MAX_RESPONSE_BYTES = 5 * 1024 * 1024

scripts/startup/performance.py

@@ -12,7 +12,6 @@ from datetime import datetime, timezone
 from pathlib import Path
 from typing import Any, Optional
 
-
 PROJECT_ROOT = Path(__file__).resolve().parents[2]
 DEFAULT_OUTPUT = (
     PROJECT_ROOT