feat: 新增 Plan B 整目录重装脚本，不影响 setup_env 一键安装

添加 deploy/reinstall.sh 备份 env、克隆、调 setup_env、恢复配置并 PM2 启动；
附带 pm2_start_all.sh 与 hub_settings 清理工具。

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

tests/test_sanitize_hub_settings.py

@@ -0,0 +1,41 @@
+"""deploy/sanitize_hub_settings.py 单元测试。"""
+from __future__ import annotations
+
+import json
+import sys
+from pathlib import Path
+
+REPO = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(REPO / "deploy"))
+
+from sanitize_hub_settings import sanitize_settings  # noqa: E402
+
+
+def test_drops_gate_bot_and_keeps_gate():
+    raw = {
+        "exchanges": [
+            {"id": "0", "key": "binance", "name": "币安", "agent_url": "http://127.0.0.1:15200"},
+            {"id": "3", "key": "gate_bot", "name": "Gate bot", "agent_url": "http://127.0.0.1:15203"},
+            {"id": "2", "key": "gate", "name": "Gate", "flask_url": "http://127.0.0.1:5000"},
+        ]
+    }
+    cleaned, removed = sanitize_settings(raw)
+    keys = [x["key"] for x in cleaned["exchanges"]]
+    assert keys == ["binance", "gate"]
+    assert len(removed) == 1
+
+
+def test_drops_port_5002_legacy():
+    raw = {
+        "exchanges": [
+            {
+                "id": "3",
+                "key": "legacy",
+                "name": "crypto_monitor_gate_bot",
+                "flask_url": "http://127.0.0.1:5002",
+            },
+        ]
+    }
+    cleaned, removed = sanitize_settings(raw)
+    assert cleaned["exchanges"] == []
+    assert removed