修复两个问题：

1. 移除 eastmoney K线接口的 parsed.reverse()，统一为升序返回（与其他数据源一致），
   修复 K线图时间方向相反、每日行情明细展示远期数据的 bug

2. fetch_fund_flow_daykline 改用 curl_cffi 替代 httpx，匹配东方财富 push2his
   的 TLS 指纹检测，修复主力资金流向数据获取不到的 bug

Co-Authored-By: Claude <noreply@anthropic.com>

backend/services/eastmoney.py

@@ -1035,7 +1035,6 @@ async def fetch_kline_history(code: str, days: int = 90) -> Optional[list[dict]]
                         "turnoverRate": _f(10),
                     })
 
-                parsed.reverse()
                 return parsed
             except Exception as e:
                 if attempt == 0:
@@ -1064,10 +1063,12 @@ async def fetch_fund_flow_daykline(code: str, days: int) -> Optional[list[dict]]
         "Referer": "https://quote.eastmoney.com/",
     }
 
+    from curl_cffi.requests import AsyncSession
+
     for attempt in range(2):
-        async with httpx.AsyncClient() as client:
+        async with AsyncSession(impersonate="chrome120") as session:
             try:
-                resp = await client.get(url, headers=headers, timeout=10)
+                resp = await session.get(url, headers=headers, timeout=10)
                 if resp.status_code != 200:
                     if attempt == 0:
                         continue