移除全部对冲计划模块：crypto_okx 改为币本位单独期权执行机。

交易模式锁定 options；okx_trade_mode / 到期盈亏迁入 options；保留期权/桥/关键位/企微与中控预留快照口径。恢复点：backup/before-remove-hedge 与 tag backup-before-remove-hedge-20260930。

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

lib/options/okx_trade_mode_lib.py

@@ -0,0 +1,74 @@
+"""OKX 交易模式(币本位期权专用机:仅单独期权).
+
+历史 .env 若仍为 perp_options / options_options,读取时归一为 options,
+对冲模块已移除,不可再启用.
+"""
+from __future__ import annotations
+
+import os
+from typing import Optional
+
+MODE_OPTIONS = "options"
+# 兼容旧配置名,不再作为可选模式
+MODE_PERP = "perp_options"
+MODE_OO = "options_options"
+VALID_MODES = frozenset({MODE_OPTIONS})
+UI_MODES = frozenset({MODE_OPTIONS})
+
+_ALIASES = {
+    "option": MODE_OPTIONS,
+    "standalone": MODE_OPTIONS,
+    "期权": MODE_OPTIONS,
+    "单独期权": MODE_OPTIONS,
+    "po": MODE_OPTIONS,
+    "perp": MODE_OPTIONS,
+    "perp_options": MODE_OPTIONS,
+    "永期": MODE_OPTIONS,
+    "永期对冲": MODE_OPTIONS,
+    "oo": MODE_OPTIONS,
+    "options_options": MODE_OPTIONS,
+    "期期": MODE_OPTIONS,
+    "期期对冲": MODE_OPTIONS,
+}
+
+
+def normalize_okx_trade_mode(raw: Optional[str] = None) -> str:
+    s = str(raw or "").strip().lower()
+    if s in VALID_MODES:
+        return s
+    if s in _ALIASES:
+        return _ALIASES[s]
+    # 未知或空 → 单独期权
+    return MODE_OPTIONS
+
+
+def legacy_infer_okx_trade_mode() -> str:
+    return MODE_OPTIONS
+
+
+def get_okx_trade_mode() -> str:
+    return normalize_okx_trade_mode(os.getenv("OKX_TRADE_MODE"))
+
+
+def hedge_module_enabled() -> bool:
+    return False
+
+
+def show_perp_options() -> bool:
+    return False
+
+
+def show_options_options() -> bool:
+    return False
+
+
+def standalone_options_open_allowed() -> bool:
+    return True
+
+
+def mode_label(mode: Optional[str] = None) -> str:
+    return "单独期权"
+
+
+def block_standalone_open_by_mode_msg() -> Optional[str]:
+    return None