sendSeen returns success but does not reliably clear unread state
I investigated the current implementation and the related upstream reports.
sendSeen returns success but does not reliably clear unread state
[CRITICAL] mergeMeasurements is dode code — syncAll gebruikt eigen inline merge
Opgelost in PR #19: de syncAll pull-fase gebruikt nu mergeMeasurements() als canonieke merge. Dit elimineert de dubbele inline merge-logica en lost de LWW-bug bij remote deletions op.