feat: 核心模块增强 — 加密 + 运行时配置 + 日志缓冲

- crypto.py: API Key 加密/解密工具
- runtime_config.py: 运行时动态配置管理
- log_buffer.py: 内存日志缓冲区
- config.py: 新增加密配置项
- http_client.py: 增强重试和错误处理

src/data/normalize.py

@@ -18,7 +18,7 @@ VALID_STATUS = {"finished", "scheduled", "in_play", "paused", "postponed", "canc
 
 STATUS_MAP = {
     "finished": "finished", "completed": "finished", "done": "finished", "awarded": "finished",
-    "scheduled": "scheduled", "upcoming": "scheduled",
+    "scheduled": "scheduled", "upcoming": "scheduled", "notstarted": "scheduled", "not_started": "scheduled",
     "in_play": "in_play", "live": "in_play",
     "paused": "paused", "postponed": "postponed",
     "cancelled": "cancelled", "canceled": "cancelled", "abandoned": "cancelled",
@@ -200,8 +200,8 @@ def normalize_understat(raw: dict, league_type: str) -> NormalizedMatch | None:
     away = normalize_name(away_name)
     if not home or not away or home == away:
         return None
-    home_xg = raw.get("xG", {}).get("h") if isinstance(raw.get("xG"), dict) else None
-    away_xg = raw.get("xG", {}).get("a") if isinstance(raw.get("xG"), dict) else None
+    home_xg = _to_float(raw["xG"].get("h")) if isinstance(raw.get("xG"), dict) else None
+    away_xg = _to_float(raw["xG"].get("a")) if isinstance(raw.get("xG"), dict) else None
     return NormalizedMatch(
         league_type=league_type,
         date=dt,