Add system settings, one-click deploy, and simplify embed UI.

Remove Gate scout auto-seeding and the manual hub login button while keeping Gate login and instance SSO. Add password change and database backup/restore, plus deploy scripts with env auto-generation.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/cleanup_gate_scout.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+"""可选：从数据库中删除「Gate 扫单」分组及其下属服务。"""
+
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(ROOT))
+
+from app import create_app  # noqa: E402
+from models import Service, ServiceGroup, db  # noqa: E402
+
+GROUP_NAMES = ("Gate 扫单",)
+
+
+def main() -> None:
+    app = create_app()
+    with app.app_context():
+        removed_groups = 0
+        removed_services = 0
+        for name in GROUP_NAMES:
+            group = ServiceGroup.query.filter_by(name=name).first()
+            if not group:
+                continue
+            count = Service.query.filter_by(group_id=group.id).count()
+            db.session.delete(group)
+            removed_groups += 1
+            removed_services += count
+        if removed_groups:
+            db.session.commit()
+            print(
+                f"已删除 {removed_groups} 个分组、{removed_services} 个服务。"
+                " 请刷新导航首页。"
+            )
+        else:
+            print("未找到「Gate 扫单」分组，无需清理。")
+
+
+if __name__ == "__main__":
+    main()