install method
Wire the watcher's listening hook (event subscription, override, etc.).
Implementation
@override
void install() {
if (_sub != null) return; // idempotent
// Enable hierarchical logging so all loggers funnel through root.
hierarchicalLoggingEnabled = true;
Logger.root.level = Level.ALL;
_sub = Logger.root.onRecord.listen((record) {
TelescopeStore.recordLog(LogRecordEntry.fromLogRecord(record));
});
}