稳定性: 签到失败10分钟自动重试+前端显示Cookie剩余天数+每天9点Cookie过期预警

backend/api_service/app/routers/accounts.py

@@ -148,7 +148,26 @@ async def get_account(
     db: AsyncSession = Depends(get_db),
 ):
     account = await _get_owned_account(account_id, user, db)
-    return success_response(_account_to_dict(account), "Account retrieved")
+    data = _account_to_dict(account)
+
+    # 解析 Cookie 中的 ALF 字段获取过期时间
+    try:
+        key = _encryption_key()
+        cookie_str = decrypt_cookie(account.encrypted_cookies, account.iv, key)
+        for pair in cookie_str.split(";"):
+            pair = pair.strip()
+            if pair.startswith("ALF="):
+                alf = pair.split("=", 1)[1].strip()
+                if alf.isdigit():
+                    from datetime import datetime as _dt
+                    expire_dt = _dt.fromtimestamp(int(alf))
+                    data["cookie_expire_date"] = expire_dt.strftime("%Y-%m-%d")
+                    data["cookie_expire_days"] = (expire_dt - _dt.now()).days
+                break
+    except Exception:
+        pass
+
+    return success_response(data, "Account retrieved")
 
 
 # ---- UPDATE ----