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/market/market_precision_lib.py

@@ -0,0 +1,41 @@
+"""Exchange amount/price precision helpers for hedge and local trading."""
+
+from __future__ import annotations
+
+from typing import Any, Optional
+
+
+def _decimals_from_precision_value(value: Any) -> Optional[int]:
+    if value in (None, ""):
+        return None
+    try:
+        p = float(value)
+    except (TypeError, ValueError):
+        return None
+    if p >= 1 and abs(p - round(p)) < 1e-9 and p <= 12:
+        return int(round(p))
+    if 0 < p < 1:
+        s = f"{p:.12f}".rstrip("0")
+        if "." in s:
+            return min(12, len(s.split(".", 1)[1]))
+    return None
+
+
+def _decimals_from_ccxt_str(text: str) -> int:
+    s = str(text or "").strip()
+    if not s or "." not in s:
+        return 0
+    frac = s.split(".", 1)[1]
+    if not frac:
+        return 0
+    return min(12, len(frac.rstrip("0") or frac))
+
+
+def amount_decimals_from_exchange(exchange: Any, exchange_symbol: str) -> int:
+    try:
+        return _decimals_from_ccxt_str(exchange.amount_to_precision(exchange_symbol, 1.23456789))
+    except Exception:
+        market = exchange.market(exchange_symbol)
+        prec = (market.get("precision") or {}).get("amount")
+        d = _decimals_from_precision_value(prec)
+        return d if d is not None else 4