fix(HEL-494): 修复个股缺失指标、问天遮罩、四爻外显并回补250日K

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

backend/data/providers/tushare_helpers.py

@@ -23,6 +23,55 @@ def _text(value: Any) -> str:
     return str(value or "").strip()
 
 
+def _optional_number(value: Any) -> float | None:
+    if value in (None, "", "-"):
+        return None
+    number = _number(value, default=float("nan"))
+    if number != number:
+        return None
+    return number
+
+
+def _moneyflow_payload(flow: dict[str, Any] | None) -> dict[str, Any]:
+    if not flow:
+        return {
+            "available": False,
+            "net_million": None,
+            "large_million": None,
+            "medium_million": None,
+            "small_million": None,
+        }
+    net = _optional_number(flow.get("net_mf_amount"))
+    buy_lg = _optional_number(flow.get("buy_lg_amount"))
+    sell_lg = _optional_number(flow.get("sell_lg_amount"))
+    buy_elg = _optional_number(flow.get("buy_elg_amount"))
+    sell_elg = _optional_number(flow.get("sell_elg_amount"))
+    buy_md = _optional_number(flow.get("buy_md_amount"))
+    sell_md = _optional_number(flow.get("sell_md_amount"))
+    buy_sm = _optional_number(flow.get("buy_sm_amount"))
+    sell_sm = _optional_number(flow.get("sell_sm_amount"))
+    large = None
+    if None not in (buy_lg, sell_lg, buy_elg, sell_elg):
+        large = (buy_lg + buy_elg - sell_lg - sell_elg)
+    elif _optional_number(flow.get("large_amount")) is not None:
+        large = _optional_number(flow.get("large_amount"))
+    medium = None if None in (buy_md, sell_md) else (buy_md - sell_md)
+    if medium is None:
+        medium = _optional_number(flow.get("medium_amount"))
+    small = None if None in (buy_sm, sell_sm) else (buy_sm - sell_sm)
+    if small is None:
+        small = _optional_number(flow.get("small_amount"))
+    if net is None and large is None and medium is None and small is None:
+        return _moneyflow_payload(None)
+    return {
+        "available": True,
+        "net_million": None if net is None else round(net / 100, 2),
+        "large_million": None if large is None else round(large / 100, 2),
+        "medium_million": None if medium is None else round(medium / 100, 2),
+        "small_million": None if small is None else round(small / 100, 2),
+    }
+
+
 def _prices_equal(left: Any, right: Any) -> bool:
     if left is None or right is None:
         return False