8ef57a4bb1
The cross-instance sync silently drops tasks when x_fc_tech_sync_id is missing on the technician, and silently collapses duplicates via dict comprehension. Both make sync break in ways that are invisible until someone notices a missing task on the other instance. - _get_remote_tech_map / _get_local_syncid_to_uid: warn on duplicates - _push_tasks_to_remote: info-log when a task is skipped because the tech has no sync_id or no remote counterpart - res.users onchange: warn in the form when entering a sync_id that is already used by another active field staff Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>