feat: add system settings page for admin username and password

Co-authored-by: Cursor <cursoragent@cursor.com>

packages/config/settings.py

@@ -20,7 +20,9 @@ class Settings(BaseSettings):
     mi_port: int = Field(default=5170, alias="MI_PORT")
     tz: str = Field(default="Asia/Shanghai", alias="TZ")
     auth_secret: str = Field(default="change-me", alias="AUTH_SECRET")
+    admin_username: str = Field(default="admin", alias="ADMIN_USERNAME")
     admin_password: str = Field(default="admin123", alias="ADMIN_PASSWORD")
+    env_file: str = Field(default=".env", alias="ENV_FILE")
 
     # OKX
     okx_api_key: str = Field(default="", alias="OKX_API_KEY")
@@ -56,6 +58,15 @@ class Settings(BaseSettings):
     def db_path(self) -> Path:
         return Path(self.mi_db_path)
 
+    @property
+    def env_file_path(self) -> Path:
+        return Path(self.env_file)
+
+
+def reload_settings() -> Settings:
+    get_settings.cache_clear()
+    return get_settings()
+
 
 @lru_cache
 def get_settings() -> Settings: