Fix roll position display: live contracts, TP profit, and 2-decimal qty precision.

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

lib/hub/hub_position_metrics.py

@@ -23,6 +23,24 @@ def _coerce_float(*values: Any) -> float | None:
     return None
 
 
+CONTRACTS_QTY_DECIMALS = 2
+
+
+def normalize_contracts_qty(qty: Any, *, decimals: int = CONTRACTS_QTY_DECIMALS) -> float:
+    """张数统一精度（OKX 等线性永续默认两位小数）。"""
+    try:
+        q = float(qty)
+    except (TypeError, ValueError):
+        return 0.0
+    if not math.isfinite(q):
+        return 0.0
+    return round(abs(q), decimals)
+
+
+def contracts_qty_is_open(qty: Any, *, decimals: int = CONTRACTS_QTY_DECIMALS) -> bool:
+    return normalize_contracts_qty(qty, decimals=decimals) > 0
+
+
 def position_contracts(p: dict[str, Any]) -> float:
     info = p.get("info") or {}
     if not isinstance(info, dict):
@@ -33,7 +51,7 @@ def position_contracts(p: dict[str, Any]) -> float:
             try:
                 v = float(info[k])
                 if v != 0:
-                    return abs(v)
+                    return normalize_contracts_qty(v)
             except (TypeError, ValueError):
                 pass
     raw = p.get("contracts")
@@ -41,7 +59,7 @@ def position_contracts(p: dict[str, Any]) -> float:
         try:
             v = float(raw)
             if v != 0:
-                return abs(v)
+                return normalize_contracts_qty(v)
         except (TypeError, ValueError):
             pass
     return 0.0