chore: remove scripts/ dir; move settings maintenance to script/settings_maintain.py

Avoids path autocomplete clash with script/start.bat under script/

Made-with: Cursor

script/settings_maintain.py

@@ -0,0 +1,44 @@
+"""维护 SQLite settings 表：删除废弃键并写入推荐验证参数。
+
+请在项目根目录执行（与 start.bat 同级的上一级）：
+  python script/settings_maintain.py
+
+改库后需重启应用或在 WebUI 保存一次设置，WorkerPool / Validator 才会重载并发与超时。
+"""
+import asyncio
+import os
+import sys
+
+_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+if _ROOT not in sys.path:
+    sys.path.insert(0, _ROOT)
+
+_SETTINGS_MAINTENANCE_SQL = """
+DELETE FROM settings WHERE key = 'crawl_timeout';
+DELETE FROM settings WHERE key = 'max_retries';
+INSERT INTO settings (key, value, updated_at) VALUES ('validation_timeout', '6', CURRENT_TIMESTAMP)
+ON CONFLICT(key) DO UPDATE SET value = excluded.value, updated_at = CURRENT_TIMESTAMP;
+INSERT INTO settings (key, value, updated_at) VALUES ('default_concurrency', '120', CURRENT_TIMESTAMP)
+ON CONFLICT(key) DO UPDATE SET value = excluded.value, updated_at = CURRENT_TIMESTAMP;
+"""
+
+
+async def _run() -> None:
+    import aiosqlite
+
+    from app.core.db import DB_PATH, ensure_db_dir
+
+    ensure_db_dir()
+    if not os.path.isfile(DB_PATH):
+        print(f"数据库不存在，跳过: {DB_PATH}")
+        return
+
+    async with aiosqlite.connect(DB_PATH) as db:
+        await db.executescript(_SETTINGS_MAINTENANCE_SQL)
+        await db.commit()
+    print(f"已执行设置维护: {DB_PATH}")
+    print("请重启应用或在 WebUI 保存一次设置以使并发/超时生效。")
+
+
+if __name__ == "__main__":
+    asyncio.run(_run())