feat: 账户方向与币种白名单 env 开关（三所）

Per-instance TRADE_DIRECTION / TRADE_SYMBOL_WHITELIST restricts UI and API for manual orders, key monitors, and strategies; includes sync script for deployment profiles.

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

lib/strategy/strategy_register.py

@@ -277,6 +277,11 @@ def _roll_context(cfg: dict, data: dict) -> tuple[Optional[dict], Optional[str]]
     if not symbol:
         return None, "请选择或填写币种"
     direction = (data.get("direction") or "long").strip().lower()
+    validate_fn = getattr(m, "validate_trade_policy_open", None) if m is not None else None
+    if callable(validate_fn):
+        ok_pol, pol_msg = validate_fn(symbol, direction)
+        if not ok_pol:
+            return None, pol_msg
     ex_sym = cfg["normalize_exchange_symbol"](symbol)
     conn = get_db()
     init_strategy_tables(conn)