Initial standalone crypto_okx with one-click deploy.

Add deploy/manage.sh bootstrap for git.bz121.com/dekun/crypto_okx and point docs at this repo.

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

lib/sim/pricing_lib.py

@@ -0,0 +1,79 @@
+"""成交价与手续费: 滑点 = 1×fee_rate."""
+
+from __future__ import annotations
+
+import os
+from dataclasses import asdict, dataclass
+
+
+@dataclass(slots=True)
+class PriceResult:
+    base_px: float
+    fill_px: float
+    fee: float
+    slip: float
+    notional: float
+
+    def to_dict(self) -> dict[str, float]:
+        return asdict(self)
+
+
+def sim_fee_rate(override: float | None = None) -> float:
+    if override is not None:
+        return float(override)
+    try:
+        return float(os.getenv("SIM_FEE_RATE") or "0.0005")
+    except (TypeError, ValueError):
+        return 0.0005
+
+
+def perp_fill(
+    *,
+    side: str,
+    action: str,
+    bid: float,
+    ask: float,
+    qty: float,
+    fee_rate: float,
+) -> PriceResult:
+    """
+    side: long|short
+    action: open|close
+    开多/平空: 吃卖一 ×(1+f)
+    开空/平多: 吃买一 ×(1-f)
+    qty: 标的数量(合约张数 × 合约面值)
+    """
+    f = float(fee_rate)
+    buying = (action == "open" and side == "long") or (action == "close" and side == "short")
+    if buying:
+        base = float(ask)
+        fill = base * (1.0 + f)
+    else:
+        base = float(bid)
+        fill = base * (1.0 - f)
+    notional = abs(fill * float(qty))
+    fee = notional * f
+    slip = abs(fill - base) * float(qty)
+    return PriceResult(base_px=base, fill_px=fill, fee=fee, slip=slip, notional=notional)
+
+
+def option_fill(
+    *,
+    action: str,
+    bid: float,
+    ask: float,
+    qty: float,
+    fee_rate: float,
+) -> PriceResult:
+    """开仓买入吃卖一; 平仓卖出吃买一. qty = sheets × ct_mult."""
+    f = float(fee_rate)
+    if action == "open":
+        base = float(ask)
+        fill = base * (1.0 + f)
+    else:
+        base = float(bid)
+        fill = base * (1.0 - f)
+    notional = abs(fill * float(qty))
+    fee = notional * f
+    slip = abs(fill - base) * float(qty)
+    return PriceResult(base_px=base, fill_px=fill, fee=fee, slip=slip, notional=notional)