feat: AI 余额监控服务（平台/账号 CRUD、并发轮询、Telegram 阈值提醒）

app/config.py

@@ -0,0 +1,46 @@
+"""配置加载与保存：config.json 是唯一配置来源。"""
+
+from __future__ import annotations
+
+import json
+import threading
+from dataclasses import dataclass, asdict
+from pathlib import Path
+
+CONFIG_PATH = Path(__file__).resolve().parent.parent / "config.json"
+
+_lock = threading.Lock()
+
+
+@dataclass
+class Config:
+    """全局配置（运行时可改的字段会在界面设置页暴露）。"""
+
+    port: int = 8000
+    password: str = "admin123"
+    global_interval_seconds: int = 300
+    retry_count: int = 2
+    timeout_seconds: int = 10
+    max_workers: int = 8
+    telegram_bot_token: str = ""
+    telegram_chat_id: str = ""
+
+
+def load_config() -> Config:
+    with _lock:
+        if not CONFIG_PATH.exists():
+            cfg = Config()
+            save_config(cfg)
+            return cfg
+        raw = json.loads(CONFIG_PATH.read_text(encoding="utf-8"))
+        known = {f: getattr(Config, f) for f in Config.__dataclass_fields__}
+        data = {k: v for k, v in raw.items() if k in known}
+        return Config(**data)
+
+
+def save_config(cfg: Config) -> None:
+    with _lock:
+        CONFIG_PATH.write_text(
+            json.dumps(asdict(cfg), ensure_ascii=False, indent=2),
+            encoding="utf-8",
+        )