Initial CoinOX instance: coin-margined options + USDT hedge.

Forked from crypto_monitor OKX instance (copy-only). Keeps standalone options, perp-options and options-options hedge; drops standalone perp entrypoints; forces coin margin; adds sim wallets; default port 5010.

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

lib/key_monitor/key_monitor_schema_lib.py

@@ -0,0 +1,15 @@
+"""关键位监控表结构迁移(三所共用)."""
+from __future__ import annotations
+
+from typing import Any
+
+
+def ensure_key_monitor_schema(conn: Any) -> None:
+    for sql in (
+        "ALTER TABLE key_monitors ADD COLUMN last_mark_price REAL",
+        "ALTER TABLE key_monitors ADD COLUMN last_alert_message TEXT",
+    ):
+        try:
+            conn.execute(sql)
+        except Exception:
+            pass