Synapse allows one presence write per 10 s per user (shared by every
device). The heartbeat wrote presence at startup and on every tab
switch, so a status save right after usually got a 429 and waited 7-25 s,
with the whole status section (quick statuses, input, Clear) locked and
the Save spinner going.
- One shared presence queue (heartbeat + status save), newest write wins:
changes made while a write waits out a 429 replace it, so only the latest
is sent, as soon as the server allows.
- The status UI no longer waits on the server: the status applies locally,
Save switches off (it compared with the server echo, so it stayed lit
and invited a second, guaranteed-429 write), the controls stay usable,
and a short note shows until the write lands.
- The heartbeat skips writes the server already reflects (e.g. "online"
at startup), so it stops spending the budget for nothing.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5