Plainwire 2.6.0

Plainwire 2.6.0

2.6.0 adds live Mac app presence metadata for native clients. It carries no
database migration and no new environment variables. Installs on 2.5.8 can
upgrade directly.

Mac app presence

Authenticated WebSocket connections from Plainwire for Mac identify their
platform. Presence snapshots now include a platforms map, and online/status
events include client_platform when a visible Mac app session exists. The
platform clears when that session disconnects or becomes invisible, even if
the same account remains online in a browser.

Presence remains scoped to visible sessions. Redis-backed multi-node installs
share the Mac indicator with the same expiry behavior as presence status.
Browser and bot sessions are unmarked, and existing clients can ignore the
new fields.