usePresenceUpdater sent a one-off PUT /presence, but the SDK kept
long-polling /sync with the default set_presence=online and Synapse treats
every sync as "online", so Invisible / Hide Online Status / Idle / DND
flipped back within seconds — a privacy setting that silently didn't work.
The presence helpers now also call mx.setSyncPresence(): offline for
Invisible / Hide Online Status, unavailable for Idle / DND (and auto-mode
idle / hidden tab), online otherwise. The PUT stays for the immediate
change.
Verified on the local Synapse, another account polling every 5 s for 60 s
after a reload in each mode: invisible → offline ×12, hidePresence →
offline ×12, idle → unavailable ×12, dnd → unavailable ×12, online →
online (currently_active) ×12; /sync carries set_presence=offline /
unavailable / online accordingly (before: online* throughout).
Fixes#282
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5