feat数据统计曲线改为各机累计已实现盈亏叠加，不再用余额采样。

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

lib/bridge_client_lib.py

@@ -325,6 +325,77 @@ def pull_all_stats(window: str = "7d") -> list[dict[str, Any]]:
     return results
 
 
+def fetch_one_pnl_curve(inst: dict[str, Any], *, range_key: str = "7d") -> dict[str, Any]:
+    """拉取单机累计已实现盈亏曲线."""
+    base = (inst.get("base_url") or "").rstrip("/")
+    token = (inst.get("bridge_token") or "").strip()
+    out: dict[str, Any] = {
+        "id": inst.get("id"),
+        "name": inst.get("name"),
+        "online": False,
+        "error": "",
+        "points": [],
+        "trade_count": 0,
+        "latest": None,
+        "metric": "realized_pnl",
+    }
+    if not base or not token:
+        out["error"] = "缺少 URL 或 Token"
+        return out
+    url = f"{base}/api/hub/options/pnl_curve"
+    try:
+        r = requests.get(
+            url,
+            headers={"X-Hub-Token": token, "Accept": "application/json"},
+            params={"range": range_key},
+            timeout=max(_timeout(), 15.0),
+        )
+        data = {}
+        try:
+            data = r.json()
+        except Exception:
+            data = {}
+        if r.status_code != 200 or not isinstance(data, dict) or not data.get("ok"):
+            out["error"] = (data.get("msg") if isinstance(data, dict) else None) or f"HTTP {r.status_code}"
+            return out
+        out["online"] = True
+        pts = data.get("points") if isinstance(data.get("points"), list) else []
+        out["points"] = pts
+        out["trade_count"] = int(data.get("trade_count") or 0)
+        out["latest"] = data.get("latest")
+        out["metric"] = data.get("metric") or "realized_pnl"
+        out["start_ms"] = data.get("start_ms")
+        out["end_ms"] = data.get("end_ms")
+        return out
+    except requests.Timeout:
+        out["error"] = "超时"
+        return out
+    except Exception as e:
+        out["error"] = str(e) or "拉取失败"
+        return out
+
+
+def pull_all_pnl_curves(range_key: str = "7d") -> list[dict[str, Any]]:
+    instances = list_instances(enabled_only=True)
+    if not instances:
+        return []
+    results: list[dict[str, Any]] = []
+    with ThreadPoolExecutor(max_workers=min(8, len(instances))) as pool:
+        futs = {
+            pool.submit(fetch_one_pnl_curve, inst, range_key=range_key): inst["id"]
+            for inst in instances
+        }
+        by_id: dict[Any, dict[str, Any]] = {}
+        for fut in as_completed(futs):
+            row = fut.result()
+            by_id[row.get("id")] = row
+        for inst in instances:
+            results.append(
+                by_id.get(inst["id"]) or fetch_one_pnl_curve(inst, range_key=range_key)
+            )
+    return results
+
+
 def fetch_client_version(inst: dict[str, Any]) -> dict[str, Any]:
     """探测客户端 git 版本 / 在线."""
     base = (inst.get("base_url") or "").rstrip("/")