Route sim transfer and convert through local wallets instead of OKX private API.

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

lib/sim/wallets_lib.py

@@ -21,6 +21,16 @@ _ACCT_MAP = {
 }
 
 
+def normalize_sim_account(account: str | None) -> str:
+    """统一账户别名: swap/unified → trading; spot → funding."""
+    a = (account or "").strip().lower()
+    if a in ("trading", "swap", "unified", "18"):
+        return "trading"
+    if a in ("funding", "spot", "6"):
+        return "funding"
+    return a
+
+
 class InsufficientFunds(RuntimeError):
     pass
 
@@ -172,8 +182,8 @@ class SimWallets:
         if amt <= 0:
             return {"ok": False, "detail": "划转金额须大于 0"}
         ccy_l = (ccy or "USDT").strip().lower()
-        fa = (from_account or "").strip().lower()
-        ta = (to_account or "").strip().lower()
+        fa = normalize_sim_account(from_account)
+        ta = normalize_sim_account(to_account)
         if fa not in ("funding", "trading") or ta not in ("funding", "trading"):
             return {"ok": False, "detail": "账户仅支持 funding / trading"}
         if fa == ta: