get
Retrieve a configuration value using a dot-notation path (e.g., 'server.port').
Prototype-pollution keys (__proto__, constructor, prototype) are blocked
and return the default value.
Parameters
path
Dot-separated key path into the config object (e.g., "server.port",
"security.ssl_enabled").
defaultValue
Value returned when the path does not exist.
Returns
T — The resolved value, or defaultValue if not found.