feat: display five GLB PnL series with distinct colors

backend/app/alphas.py

@@ -251,7 +251,7 @@ def summary(item: Alpha, research: Research):
     return result
 
 
-def pnl_points(raw):
+def pnl_points(raw, column=None):
     """Use schema column names, preserving missing values rather than creating zero PnL."""
     records = raw.get("records")
     schema = raw.get("schema") or {}
@@ -261,6 +261,7 @@ def pnl_points(raw):
     else:
         names = [p.get("name", "") if isinstance(p, dict) else str(p) for p in properties]
     normalized = [name.lower() for name in names]
+    value_names = (column,) if column else ("pnl", "value")
     if not isinstance(records, list):
         raise ValueError("PnL 缺少 records")
     points = []
@@ -268,15 +269,17 @@ def pnl_points(raw):
         if isinstance(row, dict):
             row = {str(k).lower(): v for k, v in row.items()}
             timestamp = next((row[k] for k in ("date", "datetime", "timestamp") if k in row), None)
-            value = next((row[k] for k in ("pnl", "value") if k in row), None)
+            value = next((row[k] for k in value_names if k in row), None)
         else:
             date_i = next(
                 (i for i, n in enumerate(normalized) if n in ("date", "datetime", "timestamp")), None
             )
-            pnl_i = next((i for i, n in enumerate(normalized) if n in ("pnl", "value")), None)
-            if date_i is None or pnl_i is None or not isinstance(row, list) or len(row) <= max(date_i, pnl_i):
+            pnl_i = next((i for i, n in enumerate(normalized) if n in value_names), None)
+            if date_i is None or pnl_i is None or not isinstance(row, list) or len(row) <= date_i:
                 raise ValueError("PnL schema 无法识别日期或数值列")
-            timestamp, value = row[date_i], row[pnl_i]
+            if len(row) <= pnl_i and column is None:
+                raise ValueError("PnL schema 无法识别日期或数值列")
+            timestamp, value = row[date_i], row[pnl_i] if len(row) > pnl_i else None
         if timestamp is not None:
             if isinstance(timestamp, (int, float)):
                 from datetime import timezone
@@ -286,3 +289,30 @@ def pnl_points(raw):
                 ).isoformat()
             points.append({"date": str(timestamp), "value": number(value)})
     return sorted(points, key=lambda p: p["date"])
+
+
+def glb_pnl_series(raw, points):
+    """Read GLB display series from cached raw data; keep the correlation baseline intact.
+
+    Missing columns are omitted, while missing values remain gaps. Legacy caches
+    containing only normalized points still return their overall PnL.
+    """
+    series = [{"id": "pnl", "label": "总体 PnL", "points": points}]
+    schema = raw.get("schema") or {}
+    properties = schema.get("properties", []) if isinstance(schema, dict) else schema
+    names = properties if isinstance(properties, dict) else [
+        p.get("name", "") if isinstance(p, dict) else str(p) for p in properties
+    ]
+    available = {name.lower() for name in names}
+    for row in raw.get("records", []):
+        if isinstance(row, dict):
+            available.update(str(key).lower() for key in row)
+    for column, label in (
+        ("investability-constrained-pnl", "可投资性约束 PnL"),
+        ("amer-pnl", "AMER PnL"),
+        ("apac-pnl", "APAC PnL"),
+        ("emea-pnl", "EMEA PnL"),
+    ):
+        if column in available:
+            series.append({"id": column, "label": label, "points": pnl_points(raw, column)})
+    return series