getBool method
Reads a boolean value by key.
Implementation
bool getBool(String key, {bool fallback = false}) {
final value = get(key);
if (value == null) return fallback;
return switch (value.trim().toLowerCase()) {
'1' || 'true' || 'yes' || 'on' => true,
'0' || 'false' || 'no' || 'off' => false,
_ => fallback,
};
}